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SubjectREPOST patch 34/38: SERVER: new routine exp_pseudoroot() [trivial for now]

This patch defines exp_pseudoroot(), which is used to set the filehandle
for the root of the pseudofs. Right now, we just use the root of an
arbitrarily-selected export. This is just a placeholder until the
pseudofs is properly implemented in 2.5.

--- old/fs/nfsd/export.c Thu Aug 1 16:16:28 2002
+++ new/fs/nfsd/export.c Sun Aug 11 23:11:06 2002
@@ -498,6 +498,24 @@ out:
return err;
}

+/*
+ * Called when we need the filehandle for the root of the pseudofs,
+ * for a given NFSv4 client. XXX: For the moment, we just use the
+ * root dentry of an arbitarily-selected export. A real implementation
+ * of the NFSv4 pseudofs will come in a subsequent patch.
+ */
+int
+exp_pseudoroot(struct svc_client *clp, struct svc_fh *fhp)
+{
+ struct svc_export *exp;
+
+ if (!clp || list_empty(&clp->cl_list))
+ return nfserr_perm;
+
+ exp = list_entry(clp->cl_list.next, struct svc_export, ex_list);
+ dget(exp->ex_dentry);
+ return fh_compose(fhp, exp, exp->ex_dentry, NULL);
+}

/*
* Find a valid client given an inet address. We always move the most
--- old/include/linux/nfsd/export.h Thu Aug 1 16:16:01 2002
+++ new/include/linux/nfsd/export.h Sun Aug 11 23:11:06 2002
@@ -101,6 +101,7 @@ struct svc_export * exp_get_by_name(stru
struct dentry *dentry);
int exp_rootfh(struct svc_client *,
char *path, struct knfsd_fh *, int maxsize);
+int exp_pseudoroot(struct svc_client *, struct svc_fh *fhp);
int nfserrno(int errno);
void exp_nlmdetach(void);

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