1 files changed, 103 insertions, 0 deletions
diff --git a/xlators/nfs/server/src/nfs3-fh.h b/xlators/nfs/server/src/nfs3-fh.h
new file mode 100644
index 000000000..1049cdc96
--- /dev/null
+++ b/xlators/nfs/server/src/nfs3-fh.h
@@ -0,0 +1,103 @@
+/*
+  Copyright (c) 2010-2011 Gluster, Inc. <http://www.gluster.com>
+  This file is part of GlusterFS.
+
+  This file is licensed to you under your choice of the GNU Lesser
+  General Public License, version 3 or any later version (LGPLv3 or
+  later), or the GNU General Public License, version 2 (GPLv2), in all
+  cases as published by the Free Software Foundation.
+*/
+
+#ifndef _NFS_FH_H_
+#define _NFS_FH_H_
+
+#ifndef _CONFIG_H
+#define _CONFIG_H
+#include "config.h"
+#endif
+
+#include "xlator.h"
+#include "xdr-nfs3.h"
+#include "iatt.h"
+#include <sys/types.h>
+#include "uuid.h"
+
+/* BIG FAT WARNING: The file handle code is tightly coupled to NFSv3 file
+ * handles for now. This will change if and when we need v4. */
+#define GF_NFSFH_IDENT0         ':'
+#define GF_NFSFH_IDENT1         'O'
+#define GF_NFSFH_IDENT2         'G'
+#define GF_NFSFH_IDENT3         'L'
+#define GF_NFSFH_IDENT_SIZE     (sizeof(char) * 4)
+#define GF_NFSFH_STATIC_SIZE    (GF_NFSFH_IDENT_SIZE + (2*sizeof (uuid_t)))
+
+#define nfs3_fh_exportid_to_index(exprtid)      ((uint16_t)exprtid[15])
+/* ATTENTION: Change in size of the structure below should be reflected in the
+ * GF_NFSFH_STATIC_SIZE.
+ */
+struct nfs3_fh {
+
+        /* Used to ensure that a bunch of bytes are actually a GlusterFS NFS
+         * file handle. Should contain ":OGL"
+         */
+        char                    ident[4];
+
+        /* UUID that identifies an export. The value stored in exportid
+         * depends on the usage of gluster nfs. If the DVM is enabled using
+         * the nfs.dynamic-volumes option then exportid will contain the UUID
+         * of the volume so that gnfs is able to identify volumes uniquely
+         * through volume additions,deletions,migrations, etc.
+         *
+         * When not using dvm, exportid contains the index of the volume
+         * based on the position of the volume in the list of subvolumes
+         * for gnfs.
+         */
+        uuid_t              exportid;
+
+        /* File/dir gfid. */
+        uuid_t                  gfid;
+        /* This structure must be exactly NFS3_FHSIZE (64) bytes long.
+           Having the structure shorter results in buffer overflows
+           during XDR decoding.
+        */
+        unsigned char padding[NFS3_FHSIZE - GF_NFSFH_STATIC_SIZE];
+} __attribute__((__packed__));
+
+#define GF_NFS3FH_STATIC_INITIALIZER    {{0},}
+
+extern uint32_t
+nfs3_fh_compute_size (struct nfs3_fh *fh);
+
+extern uint16_t
+nfs3_fh_hash_entry (uuid_t gfid);
+
+extern int
+nfs3_fh_validate (struct nfs3_fh *fh);
+
+extern struct nfs3_fh
+nfs3_fh_build_indexed_root_fh (xlator_list_t *cl, xlator_t *xl);
+
+extern int
+nfs3_fh_is_root_fh (struct nfs3_fh *fh);
+
+extern int
+nfs3_fh_build_child_fh (struct nfs3_fh *parent, struct iatt *newstat,
+                        struct nfs3_fh *newfh);
+
+extern void
+nfs3_log_fh (struct nfs3_fh *fh);
+
+extern void
+nfs3_fh_to_str (struct nfs3_fh *fh, char *str, size_t len);
+
+extern int
+nfs3_fh_build_parent_fh (struct nfs3_fh *child, struct iatt *newstat,
+                         struct nfs3_fh *newfh);
+
+extern struct nfs3_fh
+nfs3_fh_build_uuid_root_fh (uuid_t volumeid);
+
+extern int
+nfs3_build_fh (inode_t *inode, uuid_t exportid, struct nfs3_fh *newfh);
+
+#endif