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 * First define what the actual subs. return 51 */ 52 53#define M_HASCL(m) ((m)->m_flags & M_EXT) 54#define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \ 55 (((m)->m_flags & M_PKTHDR)?MHLEN:MLEN)) 56 57/* 58 * Now for the macros that do the simple stuff and call the functions 59 * for the hard stuff. 60 * These macros use several vars. declared in nfsm_reqhead and these 61 * vars. must not be used elsewhere unless you are careful not to corrupt 62 * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries 63 * that may be used so long as the value is not expected to retained 64 * after a macro. 65 * I know, this is kind of dorkey, but it makes the actual op functions 66 * fairly clean and deals with the mess caused by the xdr discriminating 67 * unions. 68 */ 69 70 71 72/* ************************************* */ 73/* Dissection phase macros */ 74 75int nfsm_srvstrsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos); 76int nfsm_srvnamesiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos); 77int nfsm_srvnamesiz0_xx(int *s, int m, struct mbuf **md, caddr_t *dpos); 78int nfsm_srvmtofh_xx(fhandle_t *f, int v3, struct mbuf **md, caddr_t *dpos); 79int nfsm_srvsattr_xx(struct vattr *a, struct mbuf **md, caddr_t *dpos); 80 81#define nfsm_srvstrsiz(s, m) \ 82do { \ 83 int t1; \ 84 t1 = nfsm_srvstrsiz_xx(&(s), (m), &md, &dpos); \ 85 if (t1) { \ 86 error = t1; \ 87 nfsm_reply(0); \ 88 } \ 89} while (0) 90 91#define nfsm_srvnamesiz(s) \ 92do { \ 93 int t1; \ 94 t1 = nfsm_srvnamesiz_xx(&(s), NFS_MAXNAMLEN, &md, &dpos); \ 95 if (t1) { \ 96 error = t1; \ 97 nfsm_reply(0); \ 98 } \ 99} while (0) 100 101#define nfsm_srvpathsiz(s) \ 102do { \ 103 int t1; \ 104 t1 = nfsm_srvnamesiz0_xx(&(s), NFS_MAXPATHLEN, &md, &dpos); \ 105 if (t1) { \ 106 error = t1; \ 107 nfsm_reply(0); \ 108 } \ 109} while (0) 110 111#define nfsm_srvmtofh(f) \ 112do { \ 113 int t1; \ 114 t1 = nfsm_srvmtofh_xx((f), nfsd->nd_flag & ND_NFSV3, &md, &dpos); \ 115 if (t1) { \ 116 error = t1; \ 117 nfsm_reply(0); \ 118 } \ 119} while (0) 120 121/* XXX why is this different? */ 122#define nfsm_srvsattr(a) \ 123do { \ 124 int t1; \ 125 t1 = nfsm_srvsattr_xx((a), &md, &dpos); \ 126 if (t1) { \ 127 error = t1; \ 128 m_freem(mrep); \ 129 mrep = NULL; \ 130 goto nfsmout; \ 131 } \ 132} while (0) 133 134/* ************************************* */ 135/* Prepare the reply */ 136 137#define nfsm_reply(s) \ 138do { \ 139 if (mrep != NULL) { \ 140 m_freem(mrep); \ 141 mrep = NULL; \ 142 } \ 143 mreq = nfs_rephead((s), nfsd, error, &mb, &bpos); \ 144 *mrq = mreq; \ 145 if (error == EBADRPC) { \ 146 error = 0; \ 147 goto nfsmout; \ 148 } \ 149} while (0) 150 151#define nfsm_writereply(s) \ 152do { \ 153 mreq = nfs_rephead((s), nfsd, error, &mb, &bpos); \ 154} while(0) 155 156/* ************************************* */ 157/* Reply phase macros - add additional reply info */ 158 159void nfsm_srvfhtom_xx(fhandle_t *f, int v3, struct mbuf **mb, 160 caddr_t *bpos); 161void nfsm_srvpostop_fh_xx(fhandle_t *f, struct mbuf **mb, caddr_t *bpos); 162void nfsm_clget_xx(u_int32_t **tl, struct mbuf *mb, struct mbuf **mp, 163 char **bp, char **be, caddr_t bpos); 164 165#define nfsm_srvfhtom(f, v3) \ 166 nfsm_srvfhtom_xx((f), (v3), &mb, &bpos) 167 168#define nfsm_srvpostop_fh(f) \ 169 nfsm_srvpostop_fh_xx((f), &mb, &bpos) 170 171#define nfsm_srvwcc_data(br, b, ar, a) \ 172 nfsm_srvwcc(nfsd, (br), (b), (ar), (a), &mb, &bpos) 173 174#define nfsm_srvpostop_attr(r, a) \ 175 nfsm_srvpostopattr(nfsd, (r), (a), &mb, &bpos) 176 177#define nfsm_srvfillattr(a, f) \ 178 nfsm_srvfattr(nfsd, (a), (f)) 179 180#define nfsm_clget \ 181 nfsm_clget_xx(&tl, mb, &mp, &bp, &be, bpos) 182 183#endif 184