kernel: SIGINT handling (Ctrl+C → kill / SIG_IGN / user handler)#331

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Commits on May 7, 2026

docs: design spec for SIGINT handling

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docs: implementation plan for SIGINT handling

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kernel+libc: SIGINT/SYS_SIGNAL constants + EINTR/ERROR_INTERRUPTED
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kernel: per-program SIGINT state in BSS, reset by program_enter
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kernel: signal_dispatch_kill — teleport-to-kernel-ESP teardown

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drivers/ps2: set pending_sigint when cooked Ctrl+C is detected

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kernel: SIGINT_TAIL_CHECK in all IRQ epilogues; default-kill on Ctrl+C

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drivers: extend SIGINT_TAIL_CHECK to ps2_irq1_handler + fdc_irq6_handler

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kernel: SIGINT_TAIL_CHECK in syscall iret epilogues
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kernel: SYS_SYS_SIGNAL — DFL/IGN/user-virt registration

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libc: signal() wrapper around SYS_SYS_SIGNAL

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shell: install SIG_IGN at startup so its own Ctrl+C is benign

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kernel: vDSO sigreturn trampoline at VDSO_VIRT + 0x450

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kernel: signal_dispatch_user — sigcontext build + iret-frame rewrite

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kernel: SYS_SYS_SIGRETURN — restore sigcontext, redeliver pending SIGINT

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fs/fd/console: cooperative SIGINT bail in read; detect serial 0x03

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fs/fd/midi: cooperative SIGINT bail in MIDI_IOCTL_DRAIN sti+hlt loop

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libc: map ERROR_INTERRUPTED (0x08) -> EINTR in syscall wrappers

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tests: SIGINT handler delivery + sigreturn end-to-end

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docs: SIGINT handling — syscalls, architecture, changelog

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kernel: sanitize EFLAGS in SYS_SYS_SIGRETURN (drop IOPL/VM/NT/RF, force IF=1)
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docs: correct SIGINT architecture section (file paths, dispatch order, EFLAGS)
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kernel: SIGINT handling (Ctrl+C → kill / SIG_IGN / user handler)#331

kernel: SIGINT handling (Ctrl+C → kill / SIG_IGN / user handler)#331
bboe wants to merge 22 commits intomainfrom
worktree-timer

Commits on May 7, 2026

docs: design spec for SIGINT handling

docs: implementation plan for SIGINT handling

kernel+libc: SIGINT/SYS_SIGNAL constants + EINTR/ERROR_INTERRUPTED

kernel: per-program SIGINT state in BSS, reset by program_enter

kernel: signal_dispatch_kill — teleport-to-kernel-ESP teardown

drivers/ps2: set pending_sigint when cooked Ctrl+C is detected

kernel: SIGINT_TAIL_CHECK in all IRQ epilogues; default-kill on Ctrl+C

drivers: extend SIGINT_TAIL_CHECK to ps2_irq1_handler + fdc_irq6_handler

kernel: SIGINT_TAIL_CHECK in syscall iret epilogues

kernel: SYS_SYS_SIGNAL — DFL/IGN/user-virt registration

libc: signal() wrapper around SYS_SYS_SIGNAL

shell: install SIG_IGN at startup so its own Ctrl+C is benign

kernel: vDSO sigreturn trampoline at VDSO_VIRT + 0x450

kernel: signal_dispatch_user — sigcontext build + iret-frame rewrite

kernel: SYS_SYS_SIGRETURN — restore sigcontext, redeliver pending SIGINT

fs/fd/console: cooperative SIGINT bail in read; detect serial 0x03

fs/fd/midi: cooperative SIGINT bail in MIDI_IOCTL_DRAIN sti+hlt loop

libc: map ERROR_INTERRUPTED (0x08) -> EINTR in syscall wrappers

tests: SIGINT handler delivery + sigreturn end-to-end

docs: SIGINT handling — syscalls, architecture, changelog

kernel: sanitize EFLAGS in SYS_SYS_SIGRETURN (drop IOPL/VM/NT/RF, force IF=1)

docs: correct SIGINT architecture section (file paths, dispatch order, EFLAGS)