PDF at http://am.lcs.mit.edu/~rsc/xv6.pdf

Various changes made while offline.

 + bwrite sector argument is redundant; use b->sector.
 + reformatting of files for nicer PDF page breaks
 + distinguish between locked, unlocked inodes in type signatures
 + change FD_FILE to FD_INODE
 + move userinit (nee proc0init) to proc.c
 + move ROOTDEV to param.h
 + always parenthesize sizeof argument

1 files changed, 5 insertions, 1 deletions

diff --git a/fsvar.h b/fsvar.h
index 8609c2a..f823c66 100644
--- a/fsvar.h
+++ b/fsvar.h
@@ -14,7 +14,11 @@ struct inode {
   uint addrs[NADDRS];
 };
 
-#define ROOTDEV  1   // Device number of root file system
+// unlocked inode - only dev and inum are available
+struct uinode {
+  uint dev;
+  uint inum;
+};
 
 #define I_BUSY 0x1
 #define I_VALID 0x2