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, 12 insertions, 0 deletions

diff --git a/ulib.c b/ulib.c
index 6c57b2d..29aa644 100644
--- a/ulib.c
+++ b/ulib.c
@@ -100,3 +100,15 @@ atoi(const char *s)
     n = n*10 + *s++ - '0';
   return n;
 }
+
+void*
+memmove(void *vdst, void *vsrc, int n)
+{
+  char *dst, *src;
+  
+  dst = vdst;
+  src = vsrc;
+  while(n-- > 0)
+    *dst++ = *src++;
+  return vdst;
+}