kernel: start cleaning up VfsRequest

* I'm being more strict about the linked list state to hopefully ensure
  I'm not leaking any references.
* vfsreq_create was renamed to vfsreq_dispatchcopy as that name feels more
  clear. It copies its argument, and dispatches it.
* Requests for user backends are now handled more like requests for kernel
  backends - there's an accept() function that accepts a request.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/cmd/tests/kernel/fs.c b/src/cmd/tests/kernel/fs.c
index 6d4f4f4..a19f3fb 100644
--- a/src/cmd/tests/kernel/fs.c
+++ b/src/cmd/tests/kernel/fs.c
@@ -12,14 +12,14 @@ static void test_unfinished_req(void) {
 		// TODO make a similar test with all 0s passed to fs_wait
 		struct ufs_request res;
 		_sys_fs_wait(NULL, 0, &res);
-		// TODO second fs_wait
 		exit(0);
 	} else {
 		test(0 <= h);
 		test(_sys_mount(h, "/", 1) == 0);
-		int ret = _sys_open("/", 1, 0);
-		test(ret < 0);
-		// the handler quits while handling that call - but this syscall should return anyways
+		/* the handler quits while handling this call */
+		test(_sys_open("/", 1, 0) == -EPIPE);
+		/* now it's dead, at this shouldn't hang either */
+		test(_sys_open("/", 1, 0) == -EPIPE);
 	}
 }