nfsm_subs.h revision 89272
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 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. 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 * @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95 37 * $FreeBSD: head/sys/nfsserver/nfsm_subs.h 89272 2002-01-11 22:22:39Z iedowse $ 38 */ 39 40#ifndef _NFSSERVER_NFSM_SUBS_H_ 41#define _NFSSERVER_NFSM_SUBS_H_ 42 43#include <nfs/nfs_common.h> 44 45#define nfstov_mode(a) (fxdr_unsigned(u_int32_t, (a)) & ALLPERMS) 46 47/* 48 * These macros do strange and peculiar things to mbuf chains for 49 * the assistance of the nfs code. To attempt to use them for any 50 * other purpose will be dangerous. (they make weird assumptions) 51 */ 52 53/* 54 * First define what the actual subs. return 55 */ 56 57#define M_HASCL(m) ((m)->m_flags & M_EXT) 58#define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \ 59 (((m)->m_flags & M_PKTHDR)?MHLEN:MLEN)) 60 61/* 62 * Now for the macros that do the simple stuff and call the functions 63 * for the hard stuff. 64 * These macros use several vars. declared in nfsm_reqhead and these 65 * vars. must not be used elsewhere unless you are careful not to corrupt 66 * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries 67 * that may be used so long as the value is not expected to retained 68 * after a macro. 69 * I know, this is kind of dorkey, but it makes the actual op functions 70 * fairly clean and deals with the mess caused by the xdr discriminating 71 * unions. 72 */ 73 74 75 76/* ************************************* */ 77/* Dissection phase macros */ 78 79int nfsm_srvstrsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos); 80int nfsm_srvnamesiz_xx(int *s, struct mbuf **md, caddr_t *dpos); 81int nfsm_srvmtofh_xx(fhandle_t *f, struct nfsrv_descript *nfsd, 82 struct mbuf **md, caddr_t *dpos); 83int nfsm_srvsattr_xx(struct vattr *a, struct mbuf **md, caddr_t *dpos); 84 85#define nfsm_srvstrsiz(s, m) \ 86do { \ 87 int t1; \ 88 t1 = nfsm_srvstrsiz_xx(&(s), (m), &md, &dpos); \ 89 if (t1) { \ 90 error = t1; \ 91 nfsm_reply(0); \ 92 } \ 93} while (0) 94 95#define nfsm_srvnamesiz(s) \ 96do { \ 97 int t1; \ 98 t1 = nfsm_srvnamesiz_xx(&(s), &md, &dpos); \ 99 if (t1) { \ 100 error = t1; \ 101 nfsm_reply(0); \ 102 } \ 103} while (0) 104 105#define nfsm_srvmtofh(f) \ 106do { \ 107 int t1; \ 108 t1 = nfsm_srvmtofh_xx((f), nfsd, &md, &dpos); \ 109 if (t1) { \ 110 error = t1; \ 111 nfsm_reply(0); \ 112 } \ 113} while (0) 114 115/* XXX why is this different? */ 116#define nfsm_srvsattr(a) \ 117do { \ 118 int t1; \ 119 t1 = nfsm_srvsattr_xx((a), &md, &dpos); \ 120 if (t1) { \ 121 error = t1; \ 122 m_freem(mrep); \ 123 mrep = NULL; \ 124 goto nfsmout; \ 125 } \ 126} while (0) 127 128/* ************************************* */ 129/* Prepare the reply */ 130 131#define nfsm_reply(s) \ 132do { \ 133 if (mrep != NULL) { \ 134 m_freem(mrep); \ 135 mrep = NULL; \ 136 } \ 137 mreq = nfs_rephead((s), nfsd, error, &mb, &bpos); \ 138 *mrq = mreq; \ 139 if (error == EBADRPC) { \ 140 error = 0; \ 141 goto nfsmout; \ 142 } \ 143} while (0) 144 145#define nfsm_writereply(s) \ 146do { \ 147 mreq = nfs_rephead((s), nfsd, error, &mb, &bpos); \ 148} while(0) 149 150/* ************************************* */ 151/* Reply phase macros - add additional reply info */ 152 153void nfsm_srvfhtom_xx(fhandle_t *f, int v3, struct mbuf **mb, 154 caddr_t *bpos); 155void nfsm_srvpostop_fh_xx(fhandle_t *f, struct mbuf **mb, caddr_t *bpos); 156void nfsm_clget_xx(u_int32_t **tl, struct mbuf *mb, struct mbuf **mp, 157 char **bp, char **be, caddr_t bpos); 158 159#define nfsm_srvfhtom(f, v3) \ 160 nfsm_srvfhtom_xx((f), (v3), &mb, &bpos) 161 162#define nfsm_srvpostop_fh(f) \ 163 nfsm_srvpostop_fh_xx((f), &mb, &bpos) 164 165#define nfsm_srvwcc_data(br, b, ar, a) \ 166 nfsm_srvwcc(nfsd, (br), (b), (ar), (a), &mb, &bpos) 167 168#define nfsm_srvpostop_attr(r, a) \ 169 nfsm_srvpostopattr(nfsd, (r), (a), &mb, &bpos) 170 171#define nfsm_srvfillattr(a, f) \ 172 nfsm_srvfattr(nfsd, (a), (f)) 173 174#define nfsm_clget \ 175 nfsm_clget_xx(&tl, mb, &mp, &bp, &be, bpos) 176 177#endif 178