Fuchsia F15 release notes

Date: November 22, 2023

Version: F15

The following changes have been implemented:

The following updates have been made for Starnix:

Added a self-profile container feature which allows breakdown of CPU for individual syscalls.
Added ptrace UAPI.
Added "button" support in Starnix input device.
Added support and fixes for overlayfs in Starnix.
Added an InterruptibleEvent-based waiter for Futex support.
Fixed various security findings when using and handling Futexes.
Initial support for lock ordering and functionality in Starnix.
Initial support for RISC-V architecture, adding vDSO and getting first set of tests to pass.
Initial support for fsverity ioctl.
Initial support for Perfetto as consumer for Starnix traces.
Initial support for inotify and ensuring that the corresponding LTP tests are passing.
Implemented gettimeofday and clock_gettime in vDSO to get faster speeds.
Implemented Magma semaphore import and export to return sync files.
Implemented MADV_DONTFORK and MADV_WIPEONFORK for madvise().
Improve the binder interface by making it more reliable and fix various race and locking issues.
Performance improvements for syscalls using the following techniques:
- Use Mutex instead of RwLock.
- Synchronously handle triggered events.
- Use DenseMap instead of HashMap.
- Use Futex instead of zx::Port.
Wired up statfs for remote filesystems.

The following updates have been made for Web:

Improved memory allocation efficiency by always sending constraints before waiting.
Fixed two fiddle check failures when the replies are missing to avoid crashes in some edge cases.
Removed loop in ProcessDeferredAccessibilityEventsImpl which improves the performance of accessibility features.

The following updates have been made for Connectivity:

Fixed issues where some speakers were unable to connect audio.
Fixed an issue where media information was not showing up when paired with some phones.

The following updates have been made for Developer workflows:

Added ffx auth plugin.
Added a default SDK version if no version is passed into the ffx product list tool.
Added ffx ffx-storage in-tree only.
Added an ABI check to Overnet between host tool and device.
Removed support for fetching PBv1 from the ffx product tool.
Removed the unused ffx product-bundle tool.
Removed the Overnet tool.
Updated ffx target flash to communicate directly to device.
Updated ffx target flash to load ProductBundle from zip without extracting the zip.

The following updates have been made for Diagnostics:

Added various additional APIs for asserting Inspect data in Rust.
Deleted remote-diagnostics-bridge.
Fixed moniker format returned by ArchiveAccessor.
Improved Diagnostics Persistence performance by enabling requesting persisting data associated when multiple tags are used at the same time.
Improved formatting of arrays for ffx inspect and query.
Updated log_listener to use the same API as ffx log.
Updated run-test-suite to leverage a faster protocol for logging when running on the host.
Updated all Rust components to use InspectSink.

The following updates have been made for FIDL:

Added fidl::IsWire<T>.
Added experimental flag for allow_arbitrary_error_types.
Added compatibility best practices.
Enabled unknown interactions everywhere.
Fixed HLCPP conversion with unknown interactions.
Included resolved type of aliases in IR (Intermediate Representation).
Removed "has envelope" property.
Removed FIDL wire format V1. See RFC-0229: FIDL 2023 for more information about the long-term support of the wire format.
Removed transport error from fpromise::result constructors.
Updated TransportErr to serialize for natural bindings.
Updated @transitional to be behind an allowlist.

The following updates have been made for Timekeeping:

Updates to use mmap to read large files instead of loading wholesale which resulted in 7MiB of saved RAM.