vasilito
45e086558e
- Fix P15-8-init-cycle-detection.patch: replace visiting+error with seen+silent-skip to eliminate 11 false-positive 'dependency cycle detected' errors on shared deps - Fix P0-daemon-fix-init-notify-unwrap.patch: remove eprintln! for missing INIT_NOTIFY (expected for oneshot_async services, ~7 daemons affected) - Fix driver-manager hotplug loop: add PERMANENTLY_SKIPPED static set shared between hotplug handler and DriverConfig::probe() to stop infinite re-probing of Fatal/NotSupported/deferred-exhausted device+driver pairs (e.g. ided) - Fix driver-manager log_timeline: suppress repeated EPIPE/ENOENT errors with AtomicI32 dedup and AtomicBool one-shot guards for boot timeline JSON - Add driver-manager SIGTERM handler, ACPI bus registration, --status mode, driver reap loop, graceful shutdown, and reduced deferred retries (30→3)
24 lines
758 B
Diff
24 lines
758 B
Diff
--- a/src/acpi/sdt.rs
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+++ b/src/acpi/sdt.rs
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@@ -24,4 +24,20 @@
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let header_size = size_of::<Sdt>();
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total_size.saturating_sub(header_size)
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}
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+
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+ /// Validate the SDT checksum.
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+ ///
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+ /// Per ACPI 6.5 §5.2.2: the entire table (including the checksum field)
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+ /// must sum to 0 when all bytes are added together as unsigned 8-bit values.
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+ pub fn validate_checksum(&self) -> bool {
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+ let ptr = self as *const _ as *const u8;
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+ let len = self.length as usize;
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+ if len < size_of::<Sdt>() {
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+ return false;
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+ }
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+ let sum = unsafe { core::slice::from_raw_parts(ptr, len) }
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+ .iter()
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+ .fold(0u8, |acc, &b| acc.wrapping_add(b));
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+ sum == 0
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+ }
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}
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