Add support for the Coda 6.x venus<->kernel interface. This extends

FIDs to be 128-bits wide and adds support for realms.

Add a new CODA_COMPAT_5 option, which requests support for the old
Coda 5.x interface instead of the new one.

Create a new coda5.ko module that supports the 5.x interface, and make
the existing coda.ko module use the new 6.x interface. These modules
cannot both be loaded at the same time.

Obtained from:	Jan Harkes & the coda-6.0.2 distribution,
		NetBSD (drochner) (CODA_COMPAT_5 option).

1 files changed, 44 insertions, 45 deletions

diff --git a/sys/coda/coda_subr.c b/sys/coda/coda_subr.c
index 36df51d..f9e0f56 100644
--- a/sys/coda/coda_subr.c
+++ b/sys/coda/coda_subr.c
@@ -74,9 +74,16 @@ int coda_new = 0;
 struct cnode *coda_freelist = NULL;
 struct cnode *coda_cache[CODA_CACHESIZE];
 
-#define coda_hash(fid) (((fid)->Volume + (fid)->Vnode) & (CODA_CACHESIZE-1))
 #define	CNODE_NEXT(cp)	((cp)->c_next)
-#define ODD(vnode)        ((vnode) & 0x1)
+
+#ifdef CODA_COMPAT_5
+#define coda_hash(fid) \
+    (((fid)->Volume + (fid)->Vnode) & (CODA_CACHESIZE-1))
+#define IS_DIR(cnode)        (cnode.Vnode & 0x1)
+#else
+#define coda_hash(fid) (coda_f2i(fid) & (CODA_CACHESIZE-1))
+#define IS_DIR(cnode)        (cnode.opaque[2] & 0x1)
+#endif
 
 /*
  * Allocate a cnode.
@@ -161,15 +168,13 @@ coda_unsave(cp)
  */
 struct cnode *
 coda_find(fid) 
-     ViceFid *fid;
+     CodaFid *fid;
 {
     struct cnode *cp;
 
     cp = coda_cache[coda_hash(fid)];
     while (cp) {
-	if ((cp->c_fid.Vnode == fid->Vnode) &&
-	    (cp->c_fid.Volume == fid->Volume) &&
-	    (cp->c_fid.Unique == fid->Unique) &&
+	    if (coda_fid_eq(&(cp->c_fid), fid) &&
 	    (!IS_UNMOUNTING(cp)))
 	    {
 		coda_active++;
@@ -218,12 +223,10 @@ coda_kill(whoIam, dcstat)
 #endif
 				count++;
 				CODADEBUG(CODA_FLUSH, 
-					 myprintf(("Live cnode fid %lx.%lx.%lx flags %d count %d\n",
-						   (cp->c_fid).Volume,
-						   (cp->c_fid).Vnode,
-						   (cp->c_fid).Unique, 
-						   cp->c_flags,
-						   vrefcnt(CTOV(cp)))); );
+					  myprintf(("Live cnode fid %s flags %d count %d\n",
+						    coda_f2s(&cp->c_fid),
+						    cp->c_flags,
+						    vrefcnt(CTOV(cp)))); );
 			}
 		}
 	}
@@ -248,7 +251,7 @@ coda_flush(dcstat)
 
     for (hash = 0; hash < CODA_CACHESIZE; hash++) {
 	for (cp = coda_cache[hash]; cp != NULL; cp = CNODE_NEXT(cp)) {  
-	    if (!ODD(cp->c_fid.Vnode)) /* only files can be executed */
+	    if (!IS_DIR(cp->c_fid)) /* only files can be executed */
 		coda_vmflush(cp);
 	}
     }
@@ -268,9 +271,8 @@ coda_testflush(void)
 	for (cp = coda_cache[hash];
 	     cp != NULL;
 	     cp = CNODE_NEXT(cp)) {  
-	    myprintf(("Live cnode fid %lx.%lx.%lx count %d\n",
-		      (cp->c_fid).Volume,(cp->c_fid).Vnode,
-		      (cp->c_fid).Unique, vrefcnt(CTOV(cp))));
+	    myprintf(("Live cnode fid %s count %d\n",
+		      coda_f2s(&cp->c_fid), CTOV(cp)->v_usecount));
 	}
     }
 }
@@ -373,7 +375,7 @@ coda_cacheprint(whoIam)
  * The sixth allows Venus to replace local fids with global ones
  * during reintegration.
  *
- * CODA_REPLACE -- replace one ViceFid with another throughout the name cache 
+ * CODA_REPLACE -- replace one CodaFid with another throughout the name cache 
  */
 
 int handleDownCall(opcode, out)
@@ -396,7 +398,11 @@ int handleDownCall(opcode, out)
 	  coda_clstat.reqs[CODA_PURGEUSER]++;
 	  
 	  /* XXX - need to prevent fsync's */
+#ifdef CODA_COMPAT_5
 	  coda_nc_purge_user(out->coda_purgeuser.cred.cr_uid, IS_DOWNCALL);
+#else
+	  coda_nc_purge_user(out->coda_purgeuser.uid, IS_DOWNCALL);
+#endif
 	  return(0);
       }
 	
@@ -407,7 +413,7 @@ int handleDownCall(opcode, out)
 	  coda_clstat.ncalls++;
 	  coda_clstat.reqs[CODA_ZAPFILE]++;
 	  
-	  cp = coda_find(&out->coda_zapfile.CodaFid);
+	  cp = coda_find(&out->coda_zapfile.Fid);
 	  if (cp != NULL) {
 	      vref(CTOV(cp));
 	      
@@ -415,11 +421,10 @@ int handleDownCall(opcode, out)
 	      ASSERT_VOP_LOCKED(CTOV(cp), "coda HandleDownCall");
 	      if (CTOV(cp)->v_vflag & VV_TEXT)
 		  error = coda_vmflush(cp);
-	      CODADEBUG(CODA_ZAPFILE, myprintf((
-"zapfile: fid = (%lx.%lx.%lx), refcnt = %d, error = %d\n",
-		  cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique,
-		  vrefcnt(CTOV(cp)) - 1, error)););
-	      if (vrefcnt(CTOV(cp)) == 1) {
+	      CODADEBUG(CODA_ZAPFILE, 
+			myprintf(("zapfile: fid = %s, refcnt = %d, error = %d\n",
+				  coda_f2s(&cp->c_fid), CTOV(cp)->v_usecount - 1, error)););
+    if (vrefcnt(CTOV(cp)) == 1) {
 		  cp->c_flags |= C_PURGING;
 	      }
 	      vrele(CTOV(cp));
@@ -434,17 +439,16 @@ int handleDownCall(opcode, out)
 	  coda_clstat.ncalls++;
 	  coda_clstat.reqs[CODA_ZAPDIR]++;
 	  
-	  cp = coda_find(&out->coda_zapdir.CodaFid);
+	  cp = coda_find(&out->coda_zapdir.Fid);
 	  if (cp != NULL) {
 	      vref(CTOV(cp));
 	      
 	      cp->c_flags &= ~C_VATTR;
-	      coda_nc_zapParentfid(&out->coda_zapdir.CodaFid, IS_DOWNCALL);
+	      coda_nc_zapParentfid(&out->coda_zapdir.Fid, IS_DOWNCALL);
 
 	      CODADEBUG(CODA_ZAPDIR, myprintf((
-"zapdir: fid = (%lx.%lx.%lx), refcnt = %d\n",
-		  cp->c_fid.Volume, cp->c_fid.Vnode, cp->c_fid.Unique,
-		  vrefcnt(CTOV(cp)) - 1)););
+		  "zapdir: fid = %s, refcnt = %d\n",
+		  coda_f2s(&cp->c_fid), CTOV(cp)->v_usecount - 1)););
 	      if (vrefcnt(CTOV(cp)) == 1) {
 		  cp->c_flags |= C_PURGING;
 	      }
@@ -461,25 +465,23 @@ int handleDownCall(opcode, out)
 	  coda_clstat.ncalls++;
 	  coda_clstat.reqs[CODA_PURGEFID]++;
 
-	  cp = coda_find(&out->coda_purgefid.CodaFid);
+	  cp = coda_find(&out->coda_purgefid.Fid);
 	  if (cp != NULL) {
 	      vref(CTOV(cp));
-	      if (ODD(out->coda_purgefid.CodaFid.Vnode)) { /* Vnode is a directory */
-		  coda_nc_zapParentfid(&out->coda_purgefid.CodaFid,
-				     IS_DOWNCALL);     
+	      if (IS_DIR(out->coda_purgefid.Fid)) { /* Vnode is a directory */
+		      coda_nc_zapParentfid(&out->coda_purgefid.Fid,IS_DOWNCALL);     
 	      }
 	      cp->c_flags &= ~C_VATTR;
-	      coda_nc_zapfid(&out->coda_purgefid.CodaFid, IS_DOWNCALL);
+	      coda_nc_zapfid(&out->coda_purgefid.Fid, IS_DOWNCALL);
 	      ASSERT_VOP_LOCKED(CTOV(cp), "coda HandleDownCall");
-	      if (!(ODD(out->coda_purgefid.CodaFid.Vnode)) 
+	      if (!(IS_DIR(out->coda_purgefid.Fid)) 
 		  && (CTOV(cp)->v_vflag & VV_TEXT)) {
 		  
 		  error = coda_vmflush(cp);
 	      }
-	      CODADEBUG(CODA_PURGEFID, myprintf(("purgefid: fid = (%lx.%lx.%lx), refcnt = %d, error = %d\n",
-                                            cp->c_fid.Volume, cp->c_fid.Vnode,
-                                            cp->c_fid.Unique, 
-					    vrefcnt(CTOV(cp)) - 1, error)););
+	      CODADEBUG(CODA_PURGEFID, myprintf((
+			 "purgefid: fid = %s, refcnt = %d, error = %d\n",
+			 coda_f2s(&cp->c_fid), CTOV(cp)->v_usecount - 1, error)););
 	      if (vrefcnt(CTOV(cp)) == 1) {
 		  cp->c_flags |= C_PURGING;
 	      }
@@ -502,13 +504,10 @@ int handleDownCall(opcode, out)
 	      cp->c_fid = out->coda_replace.NewFid;
 	      coda_save(cp);
 
-	      CODADEBUG(CODA_REPLACE, myprintf(("replace: oldfid = (%lx.%lx.%lx), newfid = (%lx.%lx.%lx), cp = %p\n",
-					   out->coda_replace.OldFid.Volume,
-					   out->coda_replace.OldFid.Vnode,
-					   out->coda_replace.OldFid.Unique,
-					   cp->c_fid.Volume, cp->c_fid.Vnode, 
-					   cp->c_fid.Unique, cp));)
-	      vrele(CTOV(cp));
+	      CODADEBUG(CODA_REPLACE, myprintf((
+			"replace: oldfid = %s, newfid = %s, cp = %p\n",
+			coda_f2s(&out->coda_replace.OldFid),
+			coda_f2s(&cp->c_fid), cp));)	      vrele(CTOV(cp));
 	  }
 	  return (0);
       }