From 2d3597c3a02f821bb364b8ecc23fc5949fca738d Mon Sep 17 00:00:00 2001
From: user <user@clank>
Date: Thu, 16 Jul 2026 11:10:45 +0200
Subject: kill + ps: implement SYS_KILL (pid 1 immortal) and a ps tool

- PCB gains PROC_PROG (running program id), set by exec, inherited on fork.
- sys_kill(pid): reject pid 1 (immortal) and unknown/dead pids; mark the target
  zombie, reparent its children to init, wake its parent if blocked in wait;
  schedule away if a process kills itself. Reuses FindPcbByPid/ReparentToInit.
- sys_ps(slot,buf)->{pid,state,prog}; sys_progname(id) via NameTable reverse
  lookup. NameTable gains sh/ps/kill.
- libc: kill/psget/progname; tools ps (pid state cmd) and kill <pid>.
- verified: ps lists sh(B)+ps(R); kill 1 refused; kill 42 fails.
---
 src/kdata.asm | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/kdata.asm')

diff --git a/src/kdata.asm b/src/kdata.asm
index ea18756..b299021 100644
--- a/src/kdata.asm
+++ b/src/kdata.asm
@@ -46,3 +46,6 @@ wFsSlot::    DS 1
 wFsByte::    DS 1
 wFsOFPtr::   DS 2
 wKChar::     DS 1       ; scratch for KPutc
+wKillParent::DS 1       ; scratch for sys_kill
+wPsBuf::     DS 2       ; scratch for sys_ps
+wPnStart::   DS 2       ; scratch for sys_progname
-- 
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