Re: nfsd_ops patch

[Eric Sandeen <sandeen@xxxxxxx>]

Dana Soward wrote:
> 
> I don't remember seeing any posts about this, but it seems i am in need of
> it.  Where can i go to get it?  I'm getting *a lot* of undefineds with the
> latest CVS...even with a make mrproper and a .config from scratch.
> 
> Thanks,
> 
> Dana

Courtesy of Jan:

but CVS code shouldn't need this...

--- linux/fs/xfs/linux/xfs_iops.c.orig  Wed May  2 01:10:46 2001
+++ linux/fs/xfs/linux/xfs_iops.c       Fri May  4 01:33:05 2001
@@ -174,8 +174,55 @@
                linvfs_set_inode_ops(ip);
                error = linvfs_revalidate_core(ip, ATTR_COMM);
        }
+
+       if (ip)
+               return d_splice_alias(ip, dentry);
+
        d_add(dentry, ip);      /* Negative entry goes in if ip is NULL
*/
        return NULL;
+}
+
+
+struct dentry * linvfs_get_parent(struct dentry *child)
+{
+       int             error;
+       vnode_t         *vp, *cvp;
+       pathname_t      pn;
+       pathname_t      *pnp = &pn;
+       struct inode    *ip = NULL;
+       struct dentry   *parent;
+
+       vp = LINVFS_GET_VP(child->d_inode);
+       ASSERT(vp);
+
+       /*
+        * Initialize a pathname_t to pass down.
+        */
+       bzero(pnp, sizeof(pathname_t));
+       pnp->pn_complen = 2;
+       pnp->pn_path = "..";
+
+       cvp = NULL;
+
+       VOP_LOOKUP(vp, "..", &cvp, pnp, 0, NULL, NULL, error);
+       if (!error) {
+               ASSERT(cvp);
+               ip = LINVFS_GET_IP(cvp);
+               if (!ip) {
+                       VN_RELE(cvp);
+                       return ERR_PTR(-EACCES);
+               }
+               linvfs_set_inode_ops(ip);
+               error = linvfs_revalidate_core(ip, ATTR_COMM);
+       }
+
+       parent = d_make_alias(ip);
+       if (!parent) {
+               VN_RELE(cvp);
+               parent = ERR_PTR(-ENOMEM);
+       }
+
+       return parent;
 }
 
 
--- linux/fs/xfs/linux/xfs_super.c.orig Wed May  2 01:10:46 2001
+++ linux/fs/xfs/linux/xfs_super.c      Fri May  4 01:35:49 2001
@@ -38,6 +38,7 @@
 #include <linux/blkdev.h>
 #include <linux/init.h>
 #include <linux/page_buf.h>
+#include <linux/nfsd/interface.h>
 
 /* xfs_vfs[ops].c */
 extern void vfsinit(void);
@@ -49,6 +50,12 @@
 
 static struct super_operations linvfs_sops;
 
+extern struct dentry *linvfs_get_parent(struct dentry *child);
+
+static struct nfsd_operations xfs_nfsd_operations = {
+       get_parent:     linvfs_get_parent,
+};
+
 
 #define        MS_DATA         0x04
 
@@ -414,6 +421,7 @@
        set_blocksize(sb->s_dev, 512);
 
        sb->s_op = &linvfs_sops;
+       sb->s_nfsd_op = &xfs_nfsd_operations;
        sb->dq_op = NULL;
 
        LINVFS_SET_VFS(sb, vfsp);


-- 
Eric Sandeen      XFS for Linux     http://oss.sgi.com/projects/xfs
sandeen@xxxxxxx   SGI, Inc.