[Libsysio-commit] cplant: libsysio/src inode.c

[Ruth K. <rk...@us...>]

Update of /cvsroot/libsysio/libsysio/src
In directory sc8-pr-cvs1:/tmp/cvs-serv19555/src

Modified Files:
      Tag: cplant
	inode.c 
Log Message:

Add capability of checking inode generation numbers, 
if a field for it exists in the stat struct.

Bug fix for unlink/creat failure:
Changes allow re-use of an inode which is no longer in use, but
still exists in the inode cache. If the stat info for the new use 
matches cached info, the inode is re-used. If not, the old inode is 
marked 'zombie' and removed from the inode cache to make way for 
the new inode.



Index: inode.c
===================================================================
RCS file: /cvsroot/libsysio/libsysio/src/inode.c,v
retrieving revision 1.5.2.1
retrieving revision 1.5.2.2
diff -u -w -b -B -p -r1.5.2.1 -r1.5.2.2
--- inode.c	28 Apr 2003 20:55:56 -0000	1.5.2.1
+++ inode.c	24 Jul 2003 22:52:57 -0000	1.5.2.2
@@ -265,6 +265,7 @@ _sysio_i_gone(struct inode *ino)
 
 	if (ino->i_ref)
 		abort();
+	if (!ino->i_zombie) 
 	LIST_REMOVE(ino, i_link);
 	TAILQ_REMOVE(&_sysio_inodes, ino, i_nodes);
 	(*ino->i_ops.inop_gone)(ino);
@@ -272,6 +273,17 @@ _sysio_i_gone(struct inode *ino)
 
 	assert(n_inodes);
 	n_inodes--;
+}
+
+/*
+ * Stale inode, zombie it and move it out of the way 
+ */
+void
+_sysio_i_undead(struct inode *ino)
+{
+	
+	LIST_REMOVE(ino, i_link);
+	ino->i_zombie = 1;
 }
 
 /*