From e55ace0f517ede6f3635341c8adadc7b90aa75c5 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Sat, 16 Apr 2022 18:31:21 +0200
Subject: kernel/vfs: be more strict about the state of `vfs_backend.handler`

---
 src/kernel/syscalls.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/kernel/syscalls.c')

diff --git a/src/kernel/syscalls.c b/src/kernel/syscalls.c
index 31bd0de..b424bf1 100644
--- a/src/kernel/syscalls.c
+++ b/src/kernel/syscalls.c
@@ -206,6 +206,7 @@ int _syscall_fs_wait(char __user *buf, int max_len, struct fs_wait_response __us
 	if (!backend) return -1;
 
 	process_transition(process_current, PS_WAITS4REQUEST);
+	assert(!backend->handler); // TODO allow multiple processes to wait on the same backend
 	backend->handler = process_current;
 	/* checking the validity of those pointers here would make
 	 * vfs_request_accept simpler. TODO? */
-- 
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