From f6039ca691352bce5d050a4e5ffa768fadbaf68c Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sun, 10 Jul 2022 11:30:06 +0200
Subject: kernel: implement killing processes stuck on pipes

---
 src/kernel/proc.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/kernel/proc.c b/src/kernel/proc.c
index 86170aa..1cb6eb0 100644
--- a/src/kernel/proc.c
+++ b/src/kernel/proc.c
@@ -116,8 +116,15 @@ void process_kill(struct process *p, int ret) {
 		if (p->state == PS_WAITS4FS)
 			p->waits4fs.req->caller = NULL;
 
-		if (p->state == PS_WAITS4PIPE)
-			panic_unimplemented();
+		if (p->state == PS_WAITS4PIPE) {
+			struct process **iter = &p->waits4pipe.pipe->pipe.queued;
+			while (*iter && *iter != p) {
+				assert((*iter)->state == PS_WAITS4PIPE);
+				iter = &(*iter)->waits4pipe.next;
+			}
+			assert(iter && *iter == p);
+			*iter = p->waits4pipe.next;
+		}
 
 		for (handle_t h = 0; h < HANDLE_MAX; h++)
 			handle_close(p->handles[h]);
-- 
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