1/*- 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Rick Macklem at The University of Guelph. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95 33 * $FreeBSD$ 34 */ 35 36#ifndef _NFSSERVER_NFSM_SUBS_H_ 37#define _NFSSERVER_NFSM_SUBS_H_ 38 39#include <nfs/nfs_common.h> 40 41#define nfstov_mode(a) (fxdr_unsigned(u_int32_t, (a)) & ALLPERMS) 42 43/* 44 * These macros do strange and peculiar things to mbuf chains for 45 * the assistance of the nfs code. To attempt to use them for any 46 * other purpose will be dangerous. (they make weird assumptions) 47 */ 48 49/* 50 * Now for the macros that do the simple stuff and call the functions 51 * for the hard stuff. 52 * These macros use several vars. declared in nfsm_reqhead and these 53 * vars. must not be used elsewhere unless you are careful not to corrupt 54 * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries 55 * that may be used so long as the value is not expected to retained 56 * after a macro. 57 * I know, this is kind of dorkey, but it makes the actual op functions 58 * fairly clean and deals with the mess caused by the xdr discriminating 59 * unions. 60 */ 61 62 63 64/* ************************************* */ 65/* Dissection phase macros */ 66 67int nfsm_srvstrsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos); 68int nfsm_srvnamesiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos); 69int nfsm_srvnamesiz0_xx(int *s, int m, struct mbuf **md, caddr_t *dpos); 70int nfsm_srvmtofh_xx(fhandle_t *f, int v3, struct mbuf **md, caddr_t *dpos); 71int nfsm_srvsattr_xx(struct vattr *a, struct mbuf **md, caddr_t *dpos); 72 73#define nfsm_srvstrsiz(s, m) \ 74do { \ 75 int t1; \ 76 t1 = nfsm_srvstrsiz_xx(&(s), (m), &md, &dpos); \ 77 if (t1) { \ 78 error = t1; \ 79 nfsm_reply(0); \ 80 } \ 81} while (0) 82 83#define nfsm_srvnamesiz(s) \ 84do { \ 85 int t1; \ 86 t1 = nfsm_srvnamesiz_xx(&(s), NFS_MAXNAMLEN, &md, &dpos); \ 87 if (t1) { \ 88 error = t1; \ 89 nfsm_reply(0); \ 90 } \ 91} while (0) 92 93#define nfsm_srvpathsiz(s) \ 94do { \ 95 int t1; \ 96 t1 = nfsm_srvnamesiz0_xx(&(s), NFS_MAXPATHLEN, &md, &dpos); \ 97 if (t1) { \ 98 error = t1; \ 99 nfsm_reply(0); \ 100 } \ 101} while (0) 102 103#define nfsm_srvmtofh(f) \ 104do { \ 105 int t1; \ 106 t1 = nfsm_srvmtofh_xx((f), nfsd->nd_flag & ND_NFSV3, &md, &dpos); \ 107 if (t1) { \ 108 error = t1; \ 109 nfsm_reply(0); \ 110 } \ 111} while (0) 112 113/* XXX why is this different? */ 114#define nfsm_srvsattr(a) \ 115do { \ 116 int t1; \ 117 t1 = nfsm_srvsattr_xx((a), &md, &dpos); \ 118 if (t1) { \ 119 error = t1; \ 120 m_freem(mrep); \ 121 mrep = NULL; \ 122 goto nfsmout; \ 123 } \ 124} while (0) 125 126/* ************************************* */ 127/* Prepare the reply */ 128 129#define nfsm_reply(s) \ 130do { \ 131 if (mrep != NULL) { \ 132 m_freem(mrep); \ 133 mrep = NULL; \ 134 } \ 135 mreq = nfs_rephead((s), nfsd, error, &mb, &bpos); \ 136 *mrq = mreq; \ 137 if (error == EBADRPC) { \ 138 error = 0; \ 139 goto nfsmout; \ 140 } \ 141} while (0) 142 143#define nfsm_writereply(s) \ 144do { \ 145 mreq = nfs_rephead((s), nfsd, error, &mb, &bpos); \ 146} while(0) 147 148/* ************************************* */ 149/* Reply phase macros - add additional reply info */ 150 151void nfsm_srvfhtom_xx(fhandle_t *f, int v3, struct mbuf **mb, 152 caddr_t *bpos); 153void nfsm_srvpostop_fh_xx(fhandle_t *f, struct mbuf **mb, caddr_t *bpos); 154void nfsm_clget_xx(u_int32_t **tl, struct mbuf *mb, struct mbuf **mp, 155 char **bp, char **be, caddr_t bpos); 156 157#define nfsm_srvfhtom(f, v3) \ 158 nfsm_srvfhtom_xx((f), (v3), &mb, &bpos) 159 160#define nfsm_srvpostop_fh(f) \ 161 nfsm_srvpostop_fh_xx((f), &mb, &bpos) 162 163#define nfsm_srvwcc_data(br, b, ar, a) \ 164 nfsm_srvwcc(nfsd, (br), (b), (ar), (a), &mb, &bpos) 165 166#define nfsm_srvpostop_attr(r, a) \ 167 nfsm_srvpostopattr(nfsd, (r), (a), &mb, &bpos) 168 169#define nfsm_srvfillattr(a, f) \ 170 nfsm_srvfattr(nfsd, (a), (f)) 171 172#define nfsm_clget \ 173 nfsm_clget_xx(&tl, mb, &mp, &bp, &be, bpos) 174 175#endif 176