1 /* $OpenBSD: mount_xdr.c,v 1.5 2014/10/20 02:33:42 guenther Exp $ */
2
3 /*
4 * Copyright (c) 1989 Jan-Simon Pendry
5 * Copyright (c) 1989 Imperial College of Science, Technology & Medicine
6 * Copyright (c) 1989, 1993
7 * The Regents of the University of California. All rights reserved.
8 *
9 * This code is derived from software contributed to Berkeley by
10 * Jan-Simon Pendry at Imperial College, London.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * from: @(#)mount_xdr.c 8.1 (Berkeley) 6/6/93
37 */
38
39 #include "am.h"
40 #include "mount.h"
41
42
43 #include <nfs/rpcv2.h>
44
45 int
xdr_fhstatus(XDR * xdrsp,fhstatus * objp)46 xdr_fhstatus(XDR *xdrsp, fhstatus *objp)
47 {
48 int i;
49 long auth, authcnt, authfnd = 0;
50
51
52 if (!xdr_u_long(xdrsp, &objp->fhs_stat))
53 return (0);
54 if (objp->fhs_stat)
55 return (1);
56 switch (objp->fhs_vers) {
57 case 1:
58 objp->fhs_size = NFSX_V2FH;
59 return (xdr_opaque(xdrsp, (caddr_t)objp->fhs_fhandle, NFSX_V2FH));
60 case 3:
61 if (!xdr_long(xdrsp, &objp->fhs_size))
62 return (0);
63 if (objp->fhs_size <= 0 || objp->fhs_size > NFSX_V3FHMAX)
64 return (0);
65 if (!xdr_opaque(xdrsp, (caddr_t)objp->fhs_fhandle, objp->fhs_size))
66 return (0);
67 if (!xdr_long(xdrsp, &authcnt))
68 return (0);
69 for (i = 0; i < authcnt; i++) {
70 if (!xdr_long(xdrsp, &auth))
71 return (0);
72 if (auth == objp->fhs_auth)
73 authfnd++;
74 }
75 /*
76 * Some servers, such as DEC's OSF/1 return a nil authenticator
77 * list to indicate RPCAUTH_UNIX.
78 */
79 if (!authfnd && (authcnt > 0 || objp->fhs_auth != RPCAUTH_UNIX))
80 objp->fhs_stat = EAUTH;
81 return (1);
82 default:
83 return (0);
84 };
85 }
86
87 bool_t
xdr_dirpath(XDR * xdrs,dirpath * objp)88 xdr_dirpath(XDR *xdrs, dirpath *objp)
89 {
90 if (!xdr_string(xdrs, objp, MNTPATHLEN)) {
91 return (FALSE);
92 }
93 return (TRUE);
94 }
95
96 bool_t
xdr_name(XDR * xdrs,name * objp)97 xdr_name(XDR *xdrs, name *objp)
98 {
99 if (!xdr_string(xdrs, objp, MNTNAMLEN)) {
100 return (FALSE);
101 }
102 return (TRUE);
103 }
104
105 bool_t
xdr_mountlist(XDR * xdrs,mountlist * objp)106 xdr_mountlist(XDR *xdrs, mountlist *objp)
107 {
108 if (!xdr_pointer(xdrs, (char **)objp, sizeof(struct mountbody), xdr_mountbody)) {
109 return (FALSE);
110 }
111 return (TRUE);
112 }
113
114 bool_t
xdr_mountbody(XDR * xdrs,mountbody * objp)115 xdr_mountbody(XDR *xdrs, mountbody *objp)
116 {
117 if (!xdr_name(xdrs, &objp->ml_hostname)) {
118 return (FALSE);
119 }
120 if (!xdr_dirpath(xdrs, &objp->ml_directory)) {
121 return (FALSE);
122 }
123 if (!xdr_mountlist(xdrs, &objp->ml_next)) {
124 return (FALSE);
125 }
126 return (TRUE);
127 }
128
129 bool_t
xdr_groups(XDR * xdrs,groups * objp)130 xdr_groups(XDR *xdrs, groups *objp)
131 {
132 if (!xdr_pointer(xdrs, (char **)objp, sizeof(struct groupnode), xdr_groupnode)) {
133 return (FALSE);
134 }
135 return (TRUE);
136 }
137
138 bool_t
xdr_groupnode(XDR * xdrs,groupnode * objp)139 xdr_groupnode(XDR *xdrs, groupnode *objp)
140 {
141 if (!xdr_name(xdrs, &objp->gr_name)) {
142 return (FALSE);
143 }
144 if (!xdr_groups(xdrs, &objp->gr_next)) {
145 return (FALSE);
146 }
147 return (TRUE);
148 }
149
150 bool_t
xdr_exports(XDR * xdrs,exports * objp)151 xdr_exports(XDR *xdrs, exports *objp)
152 {
153 if (!xdr_pointer(xdrs, (char **)objp, sizeof(struct exportnode), xdr_exportnode)) {
154 return (FALSE);
155 }
156 return (TRUE);
157 }
158
159 bool_t
xdr_exportnode(XDR * xdrs,exportnode * objp)160 xdr_exportnode(XDR *xdrs, exportnode *objp)
161 {
162 if (!xdr_dirpath(xdrs, &objp->ex_dir)) {
163 return (FALSE);
164 }
165 if (!xdr_groups(xdrs, &objp->ex_groups)) {
166 return (FALSE);
167 }
168 if (!xdr_exports(xdrs, &objp->ex_next)) {
169 return (FALSE);
170 }
171 return (TRUE);
172 }
173