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author	Tulio A M Mendes <[email protected]>
	Sun, 8 Feb 2026 01:16:45 +0000 (22:16 -0300)
committer	Tulio A M Mendes <[email protected]>
	Sun, 8 Feb 2026 01:16:45 +0000 (22:16 -0300)
commit	74b8f18ca7b86d1d37edca62d3abaca6b0d5ea0f
tree	4c5e156e53c065868cdcc986b9dd4e445effd543	tree \| snapshot
parent	b1a707479b92871a8d50e2f979054a7f8938c0b8	commit \| diff

D3: dup/pipe/execve syscalls

Add refcounted dup/dup2, pipe() ring buffer, and execve() to replace the current process image. Include userland wrappers, smoke tests, and a second user binary (echo.elf) packaged into initrd.

Makefile		diff \| blob \| blame \| history
include/errno.h		diff \| blob \| blame \| history
include/syscall.h		diff \| blob \| blame \| history
src/kernel/syscall.c		diff \| blob \| blame \| history
user/echo.c	[new file with mode: 0644]	blob
user/init.c		diff \| blob \| blame \| history

AdrOS - A Unix-like Operating System for hobby/academic study.

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