Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1040 insertions, 0 deletions

diff --git a/epan/dissectors/packet-mount.c b/epan/dissectors/packet-mount.c
new file mode 100644
index 00000000..537d0beb
--- /dev/null
+++ b/epan/dissectors/packet-mount.c
@@ -0,0 +1,1040 @@
+/* packet-mount.c
+ * Routines for mount dissection
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * Copied from packet-smb.c
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+
+#include <epan/exceptions.h>
+#include <epan/to_str.h>
+#include <epan/strutil.h>
+#include "packet-mount.h"
+#include "packet-nfs.h"
+
+void proto_register_mount(void);
+void proto_reg_handoff_mount(void);
+
+static int proto_mount = -1;
+static int proto_sgi_mount = -1;
+static int hf_mount_procedure_v1 = -1;
+static int hf_mount_procedure_v2 = -1;
+static int hf_mount_procedure_v3 = -1;
+static int hf_sgi_mount_procedure_v1 = -1;
+static int hf_mount_path = -1;
+static int hf_mount3_status = -1;
+static int hf_mount_mountlist_hostname = -1;
+static int hf_mount_mountlist_directory = -1;
+static int hf_mount_mountlist = -1;
+static int hf_mount_groups_group = -1;
+static int hf_mount_groups = -1;
+static int hf_mount_exportlist_directory = -1;
+static int hf_mount_exportlist = -1;
+static int hf_mount_has_options = -1;
+static int hf_mount_options = -1;
+static int hf_mount_pathconf_link_max = -1;
+static int hf_mount_pathconf_max_canon = -1;
+static int hf_mount_pathconf_max_input = -1;
+static int hf_mount_pathconf_name_max = -1;
+static int hf_mount_pathconf_path_max = -1;
+static int hf_mount_pathconf_pipe_buf = -1;
+static int hf_mount_pathconf_vdisable = -1;
+static int hf_mount_pathconf_mask = -1;
+static int hf_mount_pathconf_error_all = -1;
+static int hf_mount_pathconf_error_link_max = -1;
+static int hf_mount_pathconf_error_max_canon = -1;
+static int hf_mount_pathconf_error_max_input = -1;
+static int hf_mount_pathconf_error_name_max = -1;
+static int hf_mount_pathconf_error_path_max = -1;
+static int hf_mount_pathconf_error_pipe_buf = -1;
+static int hf_mount_pathconf_chown_restricted = -1;
+static int hf_mount_pathconf_no_trunc = -1;
+static int hf_mount_pathconf_error_vdisable = -1;
+static int hf_mount_statvfs_bsize = -1;
+static int hf_mount_statvfs_frsize = -1;
+static int hf_mount_statvfs_blocks = -1;
+static int hf_mount_statvfs_bfree = -1;
+static int hf_mount_statvfs_bavail = -1;
+static int hf_mount_statvfs_files = -1;
+static int hf_mount_statvfs_ffree = -1;
+static int hf_mount_statvfs_favail = -1;
+static int hf_mount_statvfs_fsid = -1;
+static int hf_mount_statvfs_basetype = -1;
+static int hf_mount_statvfs_flag = -1;
+static int hf_mount_statvfs_flag_rdonly = -1;
+static int hf_mount_statvfs_flag_nosuid = -1;
+static int hf_mount_statvfs_flag_notrunc = -1;
+static int hf_mount_statvfs_flag_nodev = -1;
+static int hf_mount_statvfs_flag_grpid = -1;
+static int hf_mount_statvfs_flag_local = -1;
+static int hf_mount_statvfs_namemax = -1;
+static int hf_mount_statvfs_fstr = -1;
+static int hf_mount_flavors = -1;
+static int hf_mount_flavor = -1;
+
+static gint ett_mount = -1;
+static gint ett_mount_mountlist = -1;
+static gint ett_mount_groups = -1;
+static gint ett_mount_exportlist = -1;
+static gint ett_mount_pathconf_mask = -1;
+static gint ett_mount_statvfs_flag = -1;
+
+/* RFC 1813, Page 107 */
+static const value_string mount3_mountstat3[] =
+{
+	{	0,	"OK" },
+	{	1,	"ERR_PERM" },
+	{	2,	"ERR_NOENT" },
+	{	5,	"ERR_IO" },
+	{	13,	"ERR_ACCESS" },
+	{	20,	"ERR_NOTDIR" },
+	{	22,	"ERR_INVAL" },
+	{	63,	"ERR_NAMETOOLONG" },
+	{	10004,	"ERR_NOTSUPP" },
+	{	10006,	"ERR_SERVERFAULT" },
+	{	0,	NULL }
+};
+
+
+/* RFC 1094, Page 24 */
+/* This function dissects fhstatus for v1 and v2 of the mount protocol.
+ * Formally, hf_mount3_status only define the status codes returned by version
+ * 3 of the protocol.
+ * Though not formally defined in the standard, we use the same
+ * value-to-string mappings as version 3 since we believe that this mapping
+ * is consistant with most v1 and v2 implementations.
+ */
+static int
+dissect_fhstatus(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, rpc_call_info_value* civ)
+{
+	gint32 status;
+
+	status=tvb_get_ntohl(tvb,offset);
+	offset = dissect_rpc_uint32(tvb,tree,hf_mount3_status,offset);
+
+	switch (status) {
+		case 0:
+			offset = dissect_fhandle(tvb,offset,pinfo,tree,"fhandle", NULL, civ);
+		break;
+		default:
+			/* void */
+			col_append_fstr(
+					pinfo->cinfo, COL_INFO, " Error:%s",
+					val_to_str(status, mount3_mountstat3,
+					    "Unknown (0x%08X)"));
+		break;
+	}
+
+	return offset;
+}
+
+
+static int
+dissect_mount_dirpath_call(tvbuff_t *tvb, packet_info *pinfo,
+		proto_tree *tree, void* data)
+{
+	const char *mountpoint=NULL;
+	int offset = 0;
+
+	if((!pinfo->fd->visited) && nfs_file_name_snooping){
+		rpc_call_info_value *civ=(rpc_call_info_value *)data;
+
+		if(civ->request && (civ->proc==1)){
+			guint32 len_field;
+
+			len_field = tvb_get_ntohl(tvb, offset);
+			if (len_field < ITEM_LABEL_LENGTH) {
+				gchar *name, *ptr;
+				int addr_len, name_len;
+
+				name = address_to_str(pinfo->pool, &pinfo->dst);
+				addr_len = (int)strlen(name);
+				/* IP address, colon, path, terminating 0 */
+				name_len = addr_len + 1 + len_field + 1;
+
+				name = (gchar *)wmem_realloc(pinfo->pool,
+						(void *)name, name_len);
+				ptr = name + addr_len;
+				*ptr++ = ':';
+				tvb_memcpy(tvb, ptr, offset+4, len_field);
+				ptr += len_field;
+				*ptr = 0;
+
+				nfs_name_snoop_add_name(civ->xid, tvb, -1, name_len, 0, 0, name);
+			}
+		}
+	}
+
+	offset = dissect_rpc_string(tvb,tree,hf_mount_path,offset,&mountpoint);
+	col_append_fstr(pinfo->cinfo, COL_INFO," %s", mountpoint);
+
+	return offset;
+}
+
+
+/* RFC 1094, Page 25,26 */
+static int
+dissect_mount1_mnt_reply(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
+{
+	return dissect_fhstatus(tvb,0,pinfo,tree,(rpc_call_info_value*)data);
+}
+
+
+
+/* RFC 1094, Page 26 */
+/* RFC 1813, Page 110 */
+static int
+dissect_mountlist(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
+{
+	proto_item* lock_item;
+	proto_tree* lock_tree;
+	int old_offset = offset;
+	const char* hostname;
+	const char* directory;
+
+	lock_item = proto_tree_add_item(tree, hf_mount_mountlist, tvb,
+					offset, -1, ENC_NA);
+
+	lock_tree = proto_item_add_subtree(lock_item, ett_mount_mountlist);
+
+	offset = dissect_rpc_string(tvb, lock_tree,
+			hf_mount_mountlist_hostname, offset, &hostname);
+	offset = dissect_rpc_string(tvb, lock_tree,
+			hf_mount_mountlist_directory, offset, &directory);
+
+	if (lock_item) {
+		/* now we have a nicer string */
+		proto_item_set_text(lock_item, "Mount List Entry: %s:%s", hostname, directory);
+		/* now we know, that mountlist is shorter */
+		proto_item_set_len(lock_item, offset - old_offset);
+	}
+
+	return offset;
+}
+
+
+/* RFC 1094, Page 26 */
+/* RFC 1813, Page 110 */
+static int
+dissect_mount_dump_reply(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+	return dissect_rpc_list(tvb, pinfo, tree, 0,
+		dissect_mountlist, NULL);
+}
+
+
+
+/* RFC 1094, Page 26 */
+/* RFC 1813, Page 110 */
+static int
+dissect_group(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, void* data)
+{
+	wmem_strbuf_t *group_name_list = (wmem_strbuf_t *)data;
+	const char *group_name;
+
+	offset = dissect_rpc_string(tvb, tree,
+			hf_mount_groups_group, offset, &group_name);
+	if (wmem_strbuf_get_len(group_name_list) != 0)
+		wmem_strbuf_append_c(group_name_list, ' ');
+	wmem_strbuf_append(group_name_list, group_name);
+
+	return offset;
+}
+
+
+/* RFC 1094, Page 26 */
+/* RFC 1813, Page 113 */
+static int
+dissect_exportlist(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+	proto_item* exportlist_item = NULL;
+	proto_tree* exportlist_tree = NULL;
+	int old_offset = offset;
+	int groups_offset;
+	proto_item* groups_item = NULL;
+	proto_item* groups_tree = NULL;
+	const char* directory;
+	wmem_strbuf_t* group_name_list_strbuf;
+	const char* group_name_list;
+
+	if (tree) {
+		exportlist_item = proto_tree_add_item(tree, hf_mount_exportlist, tvb, offset, -1, ENC_NA);
+		exportlist_tree = proto_item_add_subtree(exportlist_item, ett_mount_exportlist);
+	}
+
+	offset = dissect_rpc_string(tvb, exportlist_tree,
+			hf_mount_exportlist_directory, offset, &directory);
+	groups_offset = offset;
+
+	groups_item = proto_tree_add_item(exportlist_tree, hf_mount_groups, tvb, offset, -1, ENC_NA);
+	groups_tree = proto_item_add_subtree(groups_item, ett_mount_groups);
+
+	group_name_list_strbuf = wmem_strbuf_new(pinfo->pool, "");
+	offset = dissect_rpc_list(tvb, pinfo, groups_tree, offset,
+		dissect_group, (void *)group_name_list_strbuf);
+	if (groups_item) {
+		/* mark empty lists */
+		if (offset - groups_offset == 4) {
+			proto_item_set_text(groups_item, "Groups: empty");
+		}
+
+		/* now we know, that groups is shorter */
+		proto_item_set_len(groups_item, offset - groups_offset);
+	}
+
+	group_name_list = wmem_strbuf_finalize(group_name_list_strbuf);
+
+	if (exportlist_item) {
+		/* now we have a nicer string */
+		proto_item_set_text(exportlist_item,
+		    "Export List Entry: %s -> %s",
+		    format_text(pinfo->pool, directory, strlen(directory)),
+		    format_text(pinfo->pool, group_name_list, strlen(group_name_list)));
+		/* now we know, that exportlist is shorter */
+		proto_item_set_len(exportlist_item, offset - old_offset);
+	}
+
+	return offset;
+}
+
+
+/* RFC 1094, Page 26 */
+/* RFC 1813, Page 113 */
+static int
+dissect_mount_export_reply(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+	return dissect_rpc_list(tvb, pinfo, tree, 0,
+		dissect_exportlist, NULL);
+}
+
+
+#define	OFFS_MASK	32	/* offset of the "pc_mask" field */
+
+#define	PC_ERROR_ALL		0x0001
+#define	PC_ERROR_LINK_MAX	0x0002
+#define	PC_ERROR_MAX_CANON	0x0004
+#define	PC_ERROR_MAX_INPUT	0x0008
+#define	PC_ERROR_NAME_MAX	0x0010
+#define	PC_ERROR_PATH_MAX	0x0020
+#define	PC_ERROR_PIPE_BUF	0x0040
+#define	PC_CHOWN_RESTRICTED	0x0080
+#define	PC_NO_TRUNC		0x0100
+#define	PC_ERROR_VDISABLE	0x0200
+
+static const true_false_string tos_error_all = {
+	"All info invalid",
+	"Some or all info valid"
+};
+
+static const true_false_string tos_error_link_max = {
+	"LINK_MAX invalid",
+	"LINK_MAX valid"
+};
+
+static const true_false_string tos_error_max_canon = {
+	"MAX_CANON invalid",
+	"MAX_CANON valid"
+};
+
+static const true_false_string tos_error_max_input = {
+	"MAX_INPUT invalid",
+	"MAX_INPUT valid"
+};
+
+static const true_false_string tos_error_name_max = {
+	"NAME_MAX invalid",
+	"NAME_MAX valid"
+};
+
+static const true_false_string tos_error_path_max = {
+	"PATH_MAX invalid",
+	"PATH_MAX valid"
+};
+
+static const true_false_string tos_error_pipe_buf = {
+	"PIPE_BUF invalid",
+	"PIPE_BUF valid"
+};
+
+static const true_false_string tos_chown_restricted = {
+	"Only a privileged user can change the ownership of a file",
+	"Users may give away their own files"
+};
+
+static const true_false_string tos_no_trunc = {
+	"File names that are too long will get an error",
+	"File names that are too long will be truncated"
+};
+
+static const true_false_string tos_error_vdisable = {
+	"VDISABLE invalid",
+	"VDISABLE valid"
+};
+
+
+static int
+dissect_mount_pathconf_reply(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
+{
+	guint32 pc_mask;
+	static int * const flags[] = {
+		&hf_mount_pathconf_error_all,
+		&hf_mount_pathconf_error_link_max,
+		&hf_mount_pathconf_error_max_canon,
+		&hf_mount_pathconf_error_max_input,
+		&hf_mount_pathconf_error_name_max,
+		&hf_mount_pathconf_error_path_max,
+		&hf_mount_pathconf_error_pipe_buf,
+		&hf_mount_pathconf_chown_restricted,
+		&hf_mount_pathconf_no_trunc,
+		&hf_mount_pathconf_error_vdisable,
+		NULL
+	};
+	int offset = 0;
+
+	/*
+	 * Extract the mask first, so we know which other fields the
+	 * server was able to return to us.
+	 */
+	pc_mask = tvb_get_ntohl(tvb, offset+OFFS_MASK) & 0xffff;
+	if (!(pc_mask & (PC_ERROR_LINK_MAX|PC_ERROR_ALL))) {
+		dissect_rpc_uint32(tvb,tree,hf_mount_pathconf_link_max,offset);
+	}
+	offset += 4;
+
+	if (!(pc_mask & (PC_ERROR_MAX_CANON|PC_ERROR_ALL))) {
+		proto_tree_add_item(tree,
+				hf_mount_pathconf_max_canon,tvb,offset+2,2,
+				tvb_get_ntohs(tvb,offset)&0xffff);
+	}
+	offset += 4;
+
+	if (!(pc_mask & (PC_ERROR_MAX_INPUT|PC_ERROR_ALL))) {
+		proto_tree_add_item(tree,
+				hf_mount_pathconf_max_input,tvb,offset+2,2,
+				tvb_get_ntohs(tvb,offset)&0xffff);
+	}
+	offset += 4;
+
+	if (!(pc_mask & (PC_ERROR_NAME_MAX|PC_ERROR_ALL))) {
+		proto_tree_add_item(tree,
+				hf_mount_pathconf_name_max,tvb,offset+2,2,
+				tvb_get_ntohs(tvb,offset)&0xffff);
+	}
+	offset += 4;
+
+	if (!(pc_mask & (PC_ERROR_PATH_MAX|PC_ERROR_ALL))) {
+		proto_tree_add_item(tree,
+				hf_mount_pathconf_path_max,tvb,offset+2,2,
+				tvb_get_ntohs(tvb,offset)&0xffff);
+	}
+	offset += 4;
+
+	if (!(pc_mask & (PC_ERROR_PIPE_BUF|PC_ERROR_ALL))) {
+		proto_tree_add_item(tree,
+				hf_mount_pathconf_pipe_buf,tvb,offset+2,2,
+				tvb_get_ntohs(tvb,offset)&0xffff);
+	}
+	offset += 4;
+
+	offset += 4;	/* skip "pc_xxx" pad field */
+
+	if (!(pc_mask & (PC_ERROR_VDISABLE|PC_ERROR_ALL))) {
+		proto_tree_add_item(tree,
+				hf_mount_pathconf_vdisable,tvb,offset+3,1,
+				tvb_get_ntohs(tvb,offset)&0xffff);
+	}
+	offset += 4;
+
+	proto_tree_add_bitmask(tree, tvb, offset+2, hf_mount_pathconf_mask, ett_mount_pathconf_mask, flags, ENC_BIG_ENDIAN);
+
+	offset += 8;
+	return offset;
+}
+
+
+/* RFC 1813, Page 107 */
+static int
+dissect_mountstat3(packet_info *pinfo, tvbuff_t *tvb, proto_tree *tree, int offset, int hfindex, guint32 *status)
+{
+	guint32 mountstat3;
+
+	mountstat3 = tvb_get_ntohl(tvb, offset);
+	if(mountstat3){
+		col_append_fstr(
+				pinfo->cinfo, COL_INFO, " Error:%s",
+				val_to_str(mountstat3, mount3_mountstat3,
+				    "Unknown (0x%08X)"));
+	}
+
+	offset = dissect_rpc_uint32(tvb,tree,hfindex,offset);
+	*status = mountstat3;
+	return offset;
+}
+
+/* RFC 1831, Page 109 */
+static int
+dissect_mount3_mnt_reply(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
+{
+	guint32 status;
+	guint32 auth_flavors;
+	guint32 auth_flavor;
+	guint32 auth_flavor_i;
+	int offset = 0;
+
+	offset = dissect_mountstat3(pinfo,tvb,tree,offset,hf_mount3_status,&status);
+
+	switch (status) {
+		case 0:
+			offset = dissect_nfs3_fh(tvb,offset,pinfo,tree,"fhandle",NULL,(rpc_call_info_value*)data);
+
+			auth_flavors = tvb_get_ntohl(tvb, offset);
+			proto_tree_add_uint(tree,hf_mount_flavors, tvb,
+				offset, 4, auth_flavors);
+			offset += 4;
+			for (auth_flavor_i = 0 ; auth_flavor_i < auth_flavors ; auth_flavor_i++) {
+				auth_flavor = tvb_get_ntohl(tvb, offset);
+				proto_tree_add_uint(tree,hf_mount_flavor, tvb,
+					offset, 4, auth_flavor);
+				offset += 4;
+			}
+		break;
+		default:
+			/* void */
+		break;
+	}
+
+	return offset;
+}
+
+static int
+dissect_sgi_exportlist(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
+{
+	proto_item* exportlist_item = NULL;
+	proto_tree* exportlist_tree = NULL;
+	int old_offset = offset;
+	const char* directory, *options;
+
+	if (tree) {
+		exportlist_item = proto_tree_add_item(tree, hf_mount_exportlist,
+					tvb, offset, -1, ENC_NA);
+		if (exportlist_item)
+			exportlist_tree = proto_item_add_subtree(exportlist_item,
+						ett_mount_exportlist);
+	}
+
+	offset = dissect_rpc_string(tvb, exportlist_tree,
+			hf_mount_exportlist_directory, offset, &directory);
+
+	offset = dissect_rpc_bool(tvb, exportlist_tree,
+			hf_mount_has_options, offset);
+
+	offset = dissect_rpc_string(tvb, exportlist_tree, hf_mount_options,
+			 offset, &options);
+
+	if (exportlist_item) {
+		/* now we have a nicer string */
+		proto_item_set_text(exportlist_item,
+			"Export List Entry: %s %s", directory,
+			options);
+		/* now we know, that exportlist is shorter */
+		proto_item_set_len(exportlist_item, offset - old_offset);
+	}
+
+	return offset;
+}
+
+static int
+dissect_mount_exportlist_reply(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
+{
+	return dissect_rpc_list(tvb, pinfo, tree, 0,
+		dissect_sgi_exportlist, NULL);
+}
+
+#define ST_RDONLY	0x00000001
+#define ST_NOSUID	0x00000002
+#define ST_NOTRUNC	0x00000004
+#define ST_NODEV	0x20000000
+#define ST_GRPID	0x40000000
+#define ST_LOCAL	0x80000000
+
+static const true_false_string tos_st_rdonly = {
+	"Read-only file system",
+	"Read/Write file system"
+};
+
+static const true_false_string tos_st_nosuid = {
+	"Does not support setuid/setgid semantics",
+	"Supports setuid/setgid semantics"
+};
+
+static const true_false_string tos_st_notrunc = {
+	"Does not truncate filenames longer than NAME_MAX",
+	"Truncates filenames longer than NAME_MAX"
+};
+
+static const true_false_string tos_st_nodev = {
+	"Disallows opening of device files",
+	"Allows opening of device files"
+};
+
+static const true_false_string tos_st_grpid = {
+	"Group ID assigned from directory",
+	"Group ID not assigned from directory"
+};
+
+static const true_false_string tos_st_local = {
+	"File system is local",
+	"File system is not local"
+};
+
+static int
+dissect_mount_statvfs_reply(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
+{
+	static int * const flags[] = {
+		&hf_mount_statvfs_flag_rdonly,
+		&hf_mount_statvfs_flag_nosuid,
+		&hf_mount_statvfs_flag_notrunc,
+		&hf_mount_statvfs_flag_nodev,
+		&hf_mount_statvfs_flag_grpid,
+		&hf_mount_statvfs_flag_local,
+		NULL
+	};
+	int offset = 0;
+
+	dissect_rpc_uint32(tvb, tree, hf_mount_statvfs_bsize, offset);
+	offset += 4;
+
+	dissect_rpc_uint32(tvb, tree, hf_mount_statvfs_frsize, offset);
+	offset += 4;
+
+	dissect_rpc_uint32(tvb, tree, hf_mount_statvfs_blocks, offset);
+	offset += 4;
+
+	dissect_rpc_uint32(tvb, tree, hf_mount_statvfs_bfree, offset);
+	offset += 4;
+
+	dissect_rpc_uint32(tvb, tree, hf_mount_statvfs_bavail, offset);
+	offset += 4;
+
+	dissect_rpc_uint32(tvb, tree, hf_mount_statvfs_files, offset);
+	offset += 4;
+
+	dissect_rpc_uint32(tvb, tree, hf_mount_statvfs_ffree, offset);
+	offset += 4;
+
+	dissect_rpc_uint32(tvb, tree, hf_mount_statvfs_favail, offset);
+	offset += 4;
+
+	dissect_rpc_bytes(tvb, tree, hf_mount_statvfs_basetype, offset,
+			16, TRUE, NULL);
+	offset += 16;
+
+	dissect_rpc_bytes(tvb, tree, hf_mount_statvfs_fstr, offset, 32, FALSE, NULL);
+	offset += 32;
+
+	dissect_rpc_uint32(tvb, tree, hf_mount_statvfs_fsid, offset);
+	offset += 4;
+
+	proto_tree_add_bitmask(tree, tvb, offset, hf_mount_statvfs_flag, ett_mount_statvfs_flag, flags, ENC_BIG_ENDIAN);
+	offset += 4;
+
+	dissect_rpc_uint32(tvb, tree, hf_mount_statvfs_namemax, offset);
+	offset += 4;
+
+	return offset;
+}
+
+/* proc number, "proc name", dissect_request, dissect_reply */
+
+/* Mount protocol version 1, RFC 1094 */
+static const vsff mount1_proc[] = {
+	{ 0, "NULL",
+	  dissect_rpc_void, dissect_rpc_void },
+	{ MOUNTPROC_MNT,        "MNT",
+	  dissect_mount_dirpath_call, dissect_mount1_mnt_reply },
+	{ MOUNTPROC_DUMP,       "DUMP",
+	  dissect_rpc_void, dissect_mount_dump_reply },
+	{ MOUNTPROC_UMNT,      "UMNT",
+	  dissect_mount_dirpath_call, dissect_rpc_void },
+	{ MOUNTPROC_UMNTALL,   "UMNTALL",
+	  dissect_rpc_void, dissect_rpc_void },
+	{ MOUNTPROC_EXPORT,    "EXPORT",
+	  dissect_rpc_void, dissect_mount_export_reply },
+	{ MOUNTPROC_EXPORTALL, "EXPORTALL",
+	  dissect_rpc_void, dissect_mount_export_reply },
+	{ 0, NULL, NULL, NULL }
+};
+static const value_string mount1_proc_vals[] = {
+	{ 0, "NULL" },
+	{ MOUNTPROC_MNT,       "MNT" },
+	{ MOUNTPROC_DUMP,      "DUMP" },
+	{ MOUNTPROC_UMNT,      "UMNT" },
+	{ MOUNTPROC_UMNTALL,   "UMNTALL" },
+	{ MOUNTPROC_EXPORT,    "EXPORT" },
+	{ MOUNTPROC_EXPORTALL, "EXPORTALL" },
+	{ 0, NULL }
+};
+/* end of mount version 1 */
+
+
+/* Mount protocol version 2, private communication from somebody at Sun;
+   mount V2 is V1 plus MOUNTPROC_PATHCONF to fetch information for the
+   POSIX "pathconf()" call. */
+static const vsff mount2_proc[] = {
+	{ 0,                    "NULL",
+	  dissect_rpc_void, dissect_rpc_void },
+	{ MOUNTPROC_MNT,        "MNT",
+	  dissect_mount_dirpath_call, dissect_mount1_mnt_reply },
+	{ MOUNTPROC_DUMP,       "DUMP",
+	  dissect_rpc_void, dissect_mount_dump_reply },
+	{ MOUNTPROC_UMNT,      "UMNT",
+	  dissect_mount_dirpath_call, dissect_rpc_void },
+	{ MOUNTPROC_UMNTALL,   "UMNTALL",
+	  dissect_rpc_void, dissect_rpc_void },
+	{ MOUNTPROC_EXPORT,    "EXPORT",
+	  dissect_rpc_void, dissect_mount_export_reply },
+	{ MOUNTPROC_EXPORTALL, "EXPORTALL",
+	  dissect_rpc_void, dissect_mount_export_reply },
+	{ MOUNTPROC_PATHCONF,  "PATHCONF",
+	  dissect_mount_dirpath_call, dissect_mount_pathconf_reply },
+	{ 0, NULL, NULL, NULL }
+};
+static const value_string mount2_proc_vals[] = {
+	{ 0, "NULL" },
+	{ MOUNTPROC_MNT,       "MNT" },
+	{ MOUNTPROC_DUMP,      "DUMP" },
+	{ MOUNTPROC_UMNT,      "UMNT" },
+	{ MOUNTPROC_UMNTALL,   "UMNTALL" },
+	{ MOUNTPROC_EXPORT,    "EXPORT" },
+	{ MOUNTPROC_EXPORTALL, "EXPORTALL" },
+	{ MOUNTPROC_PATHCONF,  "PATHCONF" },
+	{ 0, NULL }
+};
+/* end of mount version 2 */
+
+
+/* Mount protocol version 3, RFC 1813 */
+static const vsff mount3_proc[] = {
+	{ 0, "NULL",
+		dissect_rpc_void, dissect_rpc_void },
+	{ MOUNTPROC_MNT, "MNT",
+		dissect_mount_dirpath_call, dissect_mount3_mnt_reply },
+	{ MOUNTPROC_DUMP, "DUMP",
+		dissect_rpc_void, dissect_mount_dump_reply },
+	{ MOUNTPROC_UMNT, "UMNT",
+		dissect_mount_dirpath_call, dissect_rpc_void },
+	{ MOUNTPROC_UMNTALL, "UMNTALL",
+		dissect_rpc_void, dissect_rpc_void },
+	{ MOUNTPROC_EXPORT, "EXPORT",
+		dissect_rpc_void, dissect_mount_export_reply },
+	{ 0, NULL, NULL, NULL }
+};
+static const value_string mount3_proc_vals[] = {
+	{ 0, "NULL" },
+	{ MOUNTPROC_MNT, "MNT" },
+	{ MOUNTPROC_DUMP, "DUMP" },
+	{ MOUNTPROC_UMNT, "UMNT" },
+	{ MOUNTPROC_UMNTALL, "UMNTALL" },
+	{ MOUNTPROC_EXPORT, "EXPORT" },
+	{ 0, NULL }
+};
+/* end of Mount protocol version 3 */
+
+static const rpc_prog_vers_info mount_vers_info[] = {
+	{ 1, mount1_proc, &hf_mount_procedure_v1 },
+	{ 2, mount2_proc, &hf_mount_procedure_v2 },
+	{ 3, mount3_proc, &hf_mount_procedure_v3 },
+};
+
+/* SGI mount protocol version 1; actually the same as v1 plus
+   MOUNTPROC_EXPORTLIST and MOUNTPROC_STATVFS */
+
+static const vsff sgi_mount1_proc[] = {
+	{ 0, "NULL",
+	  dissect_rpc_void, dissect_rpc_void },
+	{ MOUNTPROC_MNT,        "MNT",
+	  dissect_mount_dirpath_call, dissect_mount1_mnt_reply },
+	{ MOUNTPROC_DUMP,       "DUMP",
+	  dissect_rpc_void, dissect_mount_dump_reply },
+	{ MOUNTPROC_UMNT,      "UMNT",
+	  dissect_mount_dirpath_call, dissect_rpc_void },
+	{ MOUNTPROC_UMNTALL,   "UMNTALL",
+	  dissect_rpc_void, dissect_rpc_void },
+	{ MOUNTPROC_EXPORT,    "EXPORT",
+	  dissect_rpc_void, dissect_mount_export_reply },
+	{ MOUNTPROC_EXPORTALL, "EXPORTALL",
+	  dissect_rpc_void, dissect_mount_export_reply },
+	{ MOUNTPROC_EXPORTLIST,"EXPORTLIST",
+	  dissect_rpc_void, dissect_mount_exportlist_reply },
+	{ MOUNTPROC_STATVFS,   "STATVFS",
+	  dissect_mount_dirpath_call, dissect_mount_statvfs_reply },
+	{ 0, NULL, NULL, NULL }
+};
+static const value_string sgi_mount1_proc_vals[] = {
+	{ 0, "NULL" },
+	{ MOUNTPROC_MNT,        "MNT" },
+	{ MOUNTPROC_DUMP,       "DUMP" },
+	{ MOUNTPROC_UMNT,       "UMNT" },
+	{ MOUNTPROC_UMNTALL,    "UMNTALL" },
+	{ MOUNTPROC_EXPORT,     "EXPORT" },
+	{ MOUNTPROC_EXPORTALL,  "EXPORTALL" },
+	{ MOUNTPROC_EXPORTLIST, "EXPORTLIST" },
+	{ MOUNTPROC_STATVFS,    "STATVFS" },
+	{ 0, NULL }
+};
+/* end of SGI mount protocol version 1 */
+
+static const rpc_prog_vers_info sgi_mount_vers_info[] = {
+	{ 1, sgi_mount1_proc, &hf_sgi_mount_procedure_v1 },
+};
+
+void
+proto_register_mount(void)
+{
+	static hf_register_info hf[] = {
+		{ &hf_mount_procedure_v1, {
+			"V1 Procedure", "mount.procedure_v1", FT_UINT32, BASE_DEC,
+			VALS(mount1_proc_vals), 0, NULL, HFILL }},
+		{ &hf_mount_procedure_v2, {
+			"V2 Procedure", "mount.procedure_v2", FT_UINT32, BASE_DEC,
+			VALS(mount2_proc_vals), 0, NULL, HFILL }},
+		{ &hf_mount_procedure_v3, {
+			"V3 Procedure", "mount.procedure_v3", FT_UINT32, BASE_DEC,
+			VALS(mount3_proc_vals), 0, NULL, HFILL }},
+		{ &hf_sgi_mount_procedure_v1, {
+			"SGI V1 procedure", "mount.procedure_sgi_v1", FT_UINT32, BASE_DEC,
+			VALS(sgi_mount1_proc_vals), 0, NULL, HFILL }},
+		{ &hf_mount_path, {
+			"Path", "mount.path", FT_STRING, BASE_NONE,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount3_status, {
+			"Status", "mount.status", FT_UINT32, BASE_DEC,
+			VALS(mount3_mountstat3), 0, NULL, HFILL }},
+		{ &hf_mount_mountlist_hostname, {
+			"Hostname", "mount.dump.hostname", FT_STRING, BASE_NONE,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_mountlist_directory, {
+			"Directory", "mount.dump.directory", FT_STRING, BASE_NONE,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_mountlist, {
+			"Mount List Entry", "mount.dump.entry", FT_NONE, BASE_NONE,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_groups_group, {
+			"Group", "mount.export.group", FT_STRING, BASE_NONE,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_groups, {
+			"Groups", "mount.export.groups", FT_NONE, BASE_NONE,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_has_options, {
+			"Has options", "mount.export.has_options", FT_UINT32,
+			 BASE_DEC, NULL, 0, NULL, HFILL }},
+		{ &hf_mount_options, {
+			"Options", "mount.export.options", FT_STRING, BASE_NONE,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_exportlist_directory, {
+			"Directory", "mount.export.directory", FT_STRING, BASE_NONE,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_exportlist, {
+			"Export List Entry", "mount.export.entry", FT_NONE, BASE_NONE,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_pathconf_link_max, {
+			"Maximum number of links to a file", "mount.pathconf.link_max",
+			FT_UINT32, BASE_DEC,
+			NULL, 0, "Maximum number of links allowed to a file", HFILL }},
+		{ &hf_mount_pathconf_max_canon, {
+			"Maximum terminal input line length", "mount.pathconf.max_canon",
+			FT_UINT16, BASE_DEC,
+			NULL, 0, "Max tty input line length", HFILL }},
+		{ &hf_mount_pathconf_max_input, {
+			"Terminal input buffer size", "mount.pathconf.max_input",
+			FT_UINT16, BASE_DEC,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_pathconf_name_max, {
+			"Maximum file name length", "mount.pathconf.name_max",
+			FT_UINT16, BASE_DEC,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_pathconf_path_max, {
+			"Maximum path name length", "mount.pathconf.path_max",
+			FT_UINT16, BASE_DEC,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_pathconf_pipe_buf, {
+			"Pipe buffer size", "mount.pathconf.pipe_buf",
+			FT_UINT16, BASE_DEC,
+			NULL, 0, "Maximum amount of data that can be written atomically to a pipe", HFILL }},
+		{ &hf_mount_pathconf_vdisable, {
+			"VDISABLE character", "mount.pathconf.vdisable_char",
+			FT_UINT8, BASE_HEX,
+			NULL, 0, "Character value to disable a terminal special character", HFILL }},
+		{ &hf_mount_pathconf_mask, {
+			"Reply error/status bits", "mount.pathconf.mask",
+			FT_UINT16, BASE_HEX,
+			NULL, 0, "Bit mask with error and status bits", HFILL }},
+		{ &hf_mount_pathconf_error_all, {
+			"ERROR_ALL",	"mount.pathconf.mask.error_all",
+			FT_BOOLEAN, 16, TFS(&tos_error_all),
+			PC_ERROR_ALL, NULL, HFILL }},
+		{ &hf_mount_pathconf_error_link_max, {
+			"ERROR_LINK_MAX", "mount.pathconf.mask.error_link_max",
+			FT_BOOLEAN, 16, TFS(&tos_error_link_max),
+			PC_ERROR_LINK_MAX, NULL, HFILL }},
+		{ &hf_mount_pathconf_error_max_canon, {
+			"ERROR_MAX_CANON", "mount.pathconf.mask.error_max_canon",
+			FT_BOOLEAN, 16, TFS(&tos_error_max_canon),
+			PC_ERROR_MAX_CANON, NULL, HFILL }},
+		{ &hf_mount_pathconf_error_max_input, {
+			"ERROR_MAX_INPUT", "mount.pathconf.mask.error_max_input",
+			FT_BOOLEAN, 16, TFS(&tos_error_max_input),
+			PC_ERROR_MAX_INPUT, NULL, HFILL }},
+		{ &hf_mount_pathconf_error_name_max, {
+			"ERROR_NAME_MAX", "mount.pathconf.mask.error_name_max",
+			FT_BOOLEAN, 16, TFS(&tos_error_name_max),
+			PC_ERROR_NAME_MAX, NULL, HFILL }},
+		{ &hf_mount_pathconf_error_path_max, {
+			"ERROR_PATH_MAX", "mount.pathconf.mask.error_path_max",
+			FT_BOOLEAN, 16, TFS(&tos_error_path_max),
+			PC_ERROR_PATH_MAX, NULL, HFILL }},
+		{ &hf_mount_pathconf_error_pipe_buf, {
+			"ERROR_PIPE_BUF", "mount.pathconf.mask.error_pipe_buf",
+			FT_BOOLEAN, 16, TFS(&tos_error_pipe_buf),
+			PC_ERROR_PIPE_BUF, NULL, HFILL }},
+		{ &hf_mount_pathconf_chown_restricted, {
+			"CHOWN_RESTRICTED", "mount.pathconf.mask.chown_restricted",
+			FT_BOOLEAN, 16, TFS(&tos_chown_restricted),
+			PC_CHOWN_RESTRICTED, NULL, HFILL }},
+		{ &hf_mount_pathconf_no_trunc, {
+			"NO_TRUNC", "mount.pathconf.mask.no_trunc",
+			FT_BOOLEAN, 16, TFS(&tos_no_trunc),
+			PC_NO_TRUNC, NULL, HFILL }},
+		{ &hf_mount_pathconf_error_vdisable, {
+			"ERROR_VDISABLE", "mount.pathconf.mask.error_vdisable",
+			FT_BOOLEAN, 16, TFS(&tos_error_vdisable),
+			PC_ERROR_VDISABLE, NULL, HFILL }},
+		{ &hf_mount_statvfs_bsize, {
+			"Block size", "mount.statvfs.f_bsize",
+			FT_UINT32, BASE_DEC, NULL, 0,
+			"File system block size", HFILL }},
+		{ &hf_mount_statvfs_frsize, {
+			"Fragment size", "mount.statvfs.f_frsize",
+			FT_UINT32, BASE_DEC, NULL, 0,
+			"File system fragment size", HFILL }},
+		{ &hf_mount_statvfs_blocks, {
+			"Blocks", "mount.statvfs.f_blocks",
+			FT_UINT32, BASE_DEC, NULL, 0,
+			"Total fragment sized blocks", HFILL }},
+		{ &hf_mount_statvfs_bfree, {
+			"Blocks Free", "mount.statvfs.f_bfree",
+			FT_UINT32, BASE_DEC, NULL, 0,
+			"Free fragment sized blocks", HFILL }},
+		{ &hf_mount_statvfs_bavail, {
+			"Blocks Available", "mount.statvfs.f_bavail",
+			FT_UINT32, BASE_DEC, NULL, 0,
+			"Available fragment sized blocks", HFILL }},
+		{ &hf_mount_statvfs_files, {
+			"Files", "mount.statvfs.f_files",
+			FT_UINT32, BASE_DEC, NULL, 0,
+			"Total files/inodes", HFILL }},
+		{ &hf_mount_statvfs_ffree, {
+			"Files Free", "mount.statvfs.f_ffree",
+			FT_UINT32, BASE_DEC, NULL, 0,
+			"Free files/inodes", HFILL }},
+		{ &hf_mount_statvfs_favail, {
+			"Files Available", "mount.statvfs.f_favail",
+			FT_UINT32, BASE_DEC, NULL, 0,
+			"Available files/inodes",  HFILL }},
+		{ &hf_mount_statvfs_fsid, {
+			"File system ID", "mount.statvfs.f_fsid",
+			FT_UINT32, BASE_DEC, NULL, 0,
+			"File system identifier", HFILL }},
+		{ &hf_mount_statvfs_basetype, {
+			"Type", "mount.statvfs.f_basetype",
+			FT_STRING, BASE_NONE, NULL, 0,
+			"File system type", HFILL }},
+		{ &hf_mount_statvfs_flag, {
+			"Flags", "mount.statvfs.f_flag",
+			FT_UINT32, BASE_HEX, NULL, 0,
+			"Flags bit-mask", HFILL }},
+		{ &hf_mount_statvfs_flag_rdonly, {
+			"ST_RDONLY", "mount.statvfs.f_flag.st_rdonly",
+			FT_BOOLEAN, 32, TFS(&tos_st_rdonly), ST_RDONLY,
+			NULL, HFILL }},
+		{ &hf_mount_statvfs_flag_nosuid, {
+			"ST_NOSUID", "mount.statvfs.f_flag.st_nosuid",
+			FT_BOOLEAN, 32, TFS(&tos_st_nosuid), ST_NOSUID,
+			NULL, HFILL }},
+		{ &hf_mount_statvfs_flag_notrunc, {
+			"ST_NOTRUNC", "mount.statvfs.f_flag.st_notrunc",
+			FT_BOOLEAN, 32, TFS(&tos_st_notrunc), ST_NOTRUNC,
+			NULL, HFILL }},
+		{ &hf_mount_statvfs_flag_nodev, {
+			"ST_NODEV", "mount.statvfs.f_flag.st_nodev",
+			 FT_BOOLEAN, 32, TFS(&tos_st_nodev), ST_NODEV,
+			NULL, HFILL }},
+		{ &hf_mount_statvfs_flag_grpid, {
+			"ST_GRPID", "mount.statvfs.f_flag.st_grpid",
+			FT_BOOLEAN, 32, TFS(&tos_st_grpid), ST_GRPID,
+			NULL, HFILL }},
+		{ &hf_mount_statvfs_flag_local, {
+			"ST_LOCAL", "mount.statvfs.f_flag.st_local",
+			FT_BOOLEAN, 32, TFS(&tos_st_local), ST_LOCAL,
+			NULL, HFILL }},
+		{ &hf_mount_statvfs_namemax, {
+			"Maximum file name length", "mount.statvfs.f_namemax",
+			FT_UINT32, BASE_DEC, NULL, 0,
+			NULL, HFILL }},
+		{ &hf_mount_statvfs_fstr, {
+			"File system specific string", "mount.statvfs.f_fstr",
+			FT_BYTES, BASE_NONE, NULL, 0,
+			NULL, HFILL }},
+		{ &hf_mount_flavors, {
+			"Flavors", "mount.flavors", FT_UINT32, BASE_DEC,
+			NULL, 0, NULL, HFILL }},
+		{ &hf_mount_flavor, {
+			"Flavor", "mount.flavor", FT_UINT32, BASE_DEC,
+			VALS(rpc_auth_flavor), 0, NULL, HFILL }},
+	};
+	static gint *ett[] = {
+		&ett_mount,
+		&ett_mount_mountlist,
+		&ett_mount_groups,
+		&ett_mount_exportlist,
+		&ett_mount_pathconf_mask,
+		&ett_mount_statvfs_flag,
+	};
+
+	proto_mount = proto_register_protocol("Mount Service", "MOUNT",
+	    "mount");
+	proto_sgi_mount = proto_register_protocol("SGI Mount Service",
+	    "SGI MOUNT", "sgimount");
+	proto_register_field_array(proto_mount, hf, array_length(hf));
+	proto_register_subtree_array(ett, array_length(ett));
+}
+
+void
+proto_reg_handoff_mount(void)
+{
+	/* Register the protocols as RPC */
+	rpc_init_prog(proto_mount, MOUNT_PROGRAM, ett_mount,
+	    G_N_ELEMENTS(mount_vers_info), mount_vers_info);
+	rpc_init_prog(proto_sgi_mount, SGI_MOUNT_PROGRAM, ett_mount,
+	    G_N_ELEMENTS(sgi_mount_vers_info), sgi_mount_vers_info);
+}
+
+/*
+ * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 8
+ * tab-width: 8
+ * indent-tabs-mode: t
+ * End:
+ *
+ * vi: set shiftwidth=8 tabstop=8 noexpandtab:
+ * :indentSize=8:tabSize=8:noTabs=false:
+ */