OpenAFS Hackathon, Pittsburgh, April 2011
-
-
-
+Config Files
+------------
Server and client side configuration file will be in krb5 config file syntax.
-Some examples done on the whiteboard
-
+Some examples done on the white board:
[core]
thiscell = andrew.cmu.edu
+Per File ACLS
+-------------
+
+On-disk storage of per file acls requires us to extend the VnodeDiskObject, and in a way that
+allows graceful *downgrades*. After much discussion, it was decided to change the small index
+version number (in the header record) and use the vnodeMagic field of the VnodeDiskObject to
+indicate extension meta data is present. The extension meta data is stored in a new, separate
+file.
+
+ VnodeBigHeader {
+ afs_uint32 magic;
+ afs_uint32 stamp;
+ afs_uint32 free;
+ unsigned char pad[256 - 4 * 3]
+ };
+
+ VnodeBigObject {
+ afs_uint32 vnode;
+ afs_uint32 unique;
+ afs_uint32 next;
+ afs_uint32 kind;
+ unsigned char data[256 - 4 * 4]
+ };
+
+ VNODE_BIG_TBC 0x40000000
+ VNODE_BIG_CONT 0x80000000
+ VNODE_BIG_TYPE_MAGIC 0x7FFFFFFF
+ VNODE_BIG_EXT1 1
+ VNODE_BIG_ACL 2
+
+
+
+
+
+