feat(socket): implement Unix domain sockets with socketpair() #119
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Add AF_UNIX socket support for local IPC via socketpair(): Kernel implementation: - UnixStreamPair and UnixStreamSocket in kernel/src/socket/unix.rs - 64KB buffer per socket with VecDeque-based ring buffer - Bidirectional communication (full duplex) - SOCK_NONBLOCK support (EAGAIN on empty read/full write) - SOCK_CLOEXEC support (FD_CLOEXEC propagation) - EOF detection when peer closes - EPIPE on write to closed peer - Error handling: EAFNOSUPPORT, EINVAL, EFAULT Userspace support: - socketpair() wrapper in libbreenix - EAFNOSUPPORT errno added (97) Test coverage (12 phases): - Socket pair creation and fd validation - Bidirectional data transfer - EOF on peer close - SOCK_NONBLOCK with EAGAIN - EPIPE on broken pipe - Error handling (bad domain/type/protocol/pointer) - Buffer-full EAGAIN scenario - SOCK_CLOEXEC flag verification Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Add framebuffer graphics support with interactive demos: Kernel: - Add sys_fb_info syscall to query framebuffer dimensions - Add sys_fb_draw_rect syscall for rectangle drawing - Extend graphics syscall infrastructure Userspace (libbreenix): - Add fb_info() and fb_draw_rect() wrappers - Add nanosleep() for timing control Interactive demos (not included in test builds): - demo.rs: Colorful rectangle animation demo - bounce.rs: Bouncing box animation Also adds run-interactive-native.sh for local testing. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
socketpair()syscallTest plan
./docker/qemu/run-boot-parallel.sh 1)Technical Validation
All 11 requirements have FULL test coverage with no gaming patterns detected.
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