Graham McIntire
55d001d9f8
Each SNMP GET/WALK now runs in a forked child process. If libnetsnmp triggers a SIGSEGV or other fatal signal, only the child dies - the parent agent logs the crash and continues operating for all other devices. Key changes: - C helper: snmp_get_isolated() and snmp_walk_isolated() using fork+pipe pattern with 60s alarm watchdog and mutex-serialized forks - Rust: IsolationMode enum (Fork/Direct) controlled by TOWEROPS_SNMP_ISOLATION env var, defaults to Fork - New CrashRecovered error variant with signal info and logging - Device poller logs crash recovery events at error level - Startup logs active isolation mode Set TOWEROPS_SNMP_ISOLATION=direct to disable isolation for debugging.
7 lines
385 B
TOML
7 lines
385 B
TOML
# Limit test parallelism to avoid macOS fork() issues with Objective-C runtime.
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# Our SNMP isolation uses fork() for crash protection, which conflicts with
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# macOS's multi-threaded fork safety checks when many threads fork concurrently.
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# On Linux (production target), this limit is not needed but is harmless.
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[env]
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OBJC_DISABLE_INITIALIZE_FORK_SAFETY = "YES"
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RUST_TEST_THREADS = "2"
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