Very Preliminary Coda

1 files changed, 64 insertions, 0 deletions

diff --git a/sys/coda/coda_kernel.h b/sys/coda/coda_kernel.h
new file mode 100644
index 000000000000..5bdcd41442ec
--- /dev/null
+++ b/sys/coda/coda_kernel.h
@@ -0,0 +1,64 @@
+/*
+
+            Coda: an Experimental Distributed File System
+                             Release 3.1
+
+          Copyright (c) 1987-1998 Carnegie Mellon University
+                         All Rights Reserved
+
+Permission  to  use, copy, modify and distribute this software and its
+documentation is hereby granted,  provided  that  both  the  copyright
+notice  and  this  permission  notice  appear  in  all  copies  of the
+software, derivative works or  modified  versions,  and  any  portions
+thereof, and that both notices appear in supporting documentation, and
+that credit is given to Carnegie Mellon University  in  all  documents
+and publicity pertaining to direct or indirect use of this code or its
+derivatives.
+
+CODA IS AN EXPERIMENTAL SOFTWARE SYSTEM AND IS  KNOWN  TO  HAVE  BUGS,
+SOME  OF  WHICH MAY HAVE SERIOUS CONSEQUENCES.  CARNEGIE MELLON ALLOWS
+FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION.   CARNEGIE  MELLON
+DISCLAIMS  ANY  LIABILITY  OF  ANY  KIND  FOR  ANY  DAMAGES WHATSOEVER
+RESULTING DIRECTLY OR INDIRECTLY FROM THE USE OF THIS SOFTWARE  OR  OF
+ANY DERIVATIVE WORK.
+
+Carnegie  Mellon  encourages  users  of  this  software  to return any
+improvements or extensions that  they  make,  and  to  grant  Carnegie
+Mellon the rights to redistribute these changes without encumbrance.
+*/
+
+/* $Header: /afs/cs/project/coda-src/cvs/coda/kernel-src/vfs/freebsd/cfs/cfsk.h,v 1.9 1998/08/18 17:05:23 rvb Exp $ */
+
+/* Macros to manipulate the queue */
+#ifndef INIT_QUEUE
+struct queue {
+    struct queue *forw, *back;
+};
+
+#define INIT_QUEUE(head)                     \
+do {                                         \
+    (head).forw = (struct queue *)&(head);   \
+    (head).back = (struct queue *)&(head);   \
+} while (0)
+
+#define GETNEXT(head) (head).forw
+
+#define EMPTY(head) ((head).forw == &(head))
+
+#define EOQ(el, head) ((struct queue *)(el) == (struct queue *)&(head))
+		   
+#define INSQUE(el, head)                             \
+do {                                                 \
+	(el).forw = ((head).back)->forw;             \
+	(el).back = (head).back;                     \
+	((head).back)->forw = (struct queue *)&(el); \
+	(head).back = (struct queue *)&(el);         \
+} while (0)
+
+#define REMQUE(el)                         \
+do {                                       \
+	((el).forw)->back = (el).back;     \
+	(el).back->forw = (el).forw;       \
+}  while (0)
+
+#endif INIT_QUEUE