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fix(macos): drain subprocess pipes before wait (#1081)

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Thanks @thesash.

Co-authored-by: Sash Catanzarite <sashcatanzarite@Sash-MacBook-Pro-14in-3.local>
This commit is contained in:
Peter Steinberger
2026-01-17 08:24:34 +00:00
parent 837eea4ebd
commit eef3df9fa5
5 changed files with 14 additions and 7 deletions
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3
apps/macos/Sources/Clawdbot/GatewayEnvironment.swift
View File

@@ -279,6 +279,8 @@ enum GatewayEnvironment {
process.standardError = pipe
do {
try process.run()
// Read pipe before waitUntilExit to avoid potential deadlock
let data = pipe.fileHandleForReading.readToEndSafely()
process.waitUntilExit()
let elapsedMs = Int(Date().timeIntervalSince(start) * 1000)
if elapsedMs > 500 {
@@ -294,7 +296,6 @@ enum GatewayEnvironment {
bin=\(binary, privacy: .public)
""")
}
let data = pipe.fileHandleForReading.readToEndSafely()
let raw = String(data: data, encoding: .utf8)?
.trimmingCharacters(in: .whitespacesAndNewlines)
return Semver.parse(raw)

5
apps/macos/Sources/Clawdbot/Launchctl.swift
View File

@@ -17,8 +17,11 @@ enum Launchctl {
process.standardError = pipe
do {
try process.run()
process.waitUntilExit()
// Read pipe output BEFORE waitUntilExit to avoid deadlock.
// If the process writes enough to fill the pipe buffer (~64KB),
// it will block until someone reads. Reading first prevents this.
let data = pipe.fileHandleForReading.readToEndSafely()
process.waitUntilExit()
let output = String(data: data, encoding: .utf8) ?? ""
return Result(status: process.terminationStatus, output: output)
} catch {

9
apps/macos/Sources/Clawdbot/PortGuardian.swift
View File

@@ -204,14 +204,15 @@ actor PortGuardian {
proc.standardError = Pipe()
do {
try proc.run()
// Read pipe before waitUntilExit to avoid potential deadlock
let data = pipe.fileHandleForReading.readToEndSafely()
proc.waitUntilExit()
guard !data.isEmpty else { return nil }
return String(data: data, encoding: .utf8)?
.trimmingCharacters(in: .whitespacesAndNewlines)
} catch {
return nil
}
let data = pipe.fileHandleForReading.readToEndSafely()
guard !data.isEmpty else { return nil }
return String(data: data, encoding: .utf8)?
.trimmingCharacters(in: .whitespacesAndNewlines)
}
private static func parseListeners(from text: String) -> [Listener] {

3
apps/macos/Sources/Clawdbot/RuntimeLocator.swift
View File

@@ -134,6 +134,8 @@ enum RuntimeLocator {
do {
try process.run()
// Read pipe before waitUntilExit to avoid potential deadlock
let data = pipe.fileHandleForReading.readToEndSafely()
process.waitUntilExit()
let elapsedMs = Int(Date().timeIntervalSince(start) * 1000)
if elapsedMs > 500 {
@@ -149,7 +151,6 @@ enum RuntimeLocator {
bin=\(binary, privacy: .public)
""")
}
let data = pipe.fileHandleForReading.readToEndSafely()
return String(data: data, encoding: .utf8)?.trimmingCharacters(in: .whitespacesAndNewlines)
} catch {
let elapsedMs = Int(Date().timeIntervalSince(start) * 1000)