nfsm_subs.h revision 83651
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 83651 2001-09-18 23:32:09Z peter $ 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 NFSMADV(m, s) \ 59 do { \ 60 (m)->m_data += (s); \ 61 } while (0) 62#define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \ 63 (((m)->m_flags & M_PKTHDR)?MHLEN:MLEN)) 64 65/* 66 * Now for the macros that do the simple stuff and call the functions 67 * for the hard stuff. 68 * These macros use several vars. declared in nfsm_reqhead and these 69 * vars. must not be used elsewhere unless you are careful not to corrupt 70 * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries 71 * that may be used so long as the value is not expected to retained 72 * after a macro. 73 * I know, this is kind of dorkey, but it makes the actual op functions 74 * fairly clean and deals with the mess caused by the xdr discriminating 75 * unions. 76 */ 77 78 79/* Helpers for macros */ 80void nfsm_srvfhtom_xx(fhandle_t *f, int v3, u_int32_t **tl, struct mbuf **mb, 81 caddr_t *bpos); 82void nfsm_srvpostop_fh_xx(fhandle_t *f, u_int32_t **tl, struct mbuf **mb, 83 caddr_t *bpos); 84int nfsm_srvstrsiz_xx(int *s, int m, u_int32_t **tl, struct mbuf **md, 85 caddr_t *dpos); 86int nfsm_srvnamesiz_xx(int *s, u_int32_t **tl, struct mbuf **md, 87 caddr_t *dpos); 88void nfs_rephead_xx(int s, struct nfsrv_descript *nfsd, 89 struct nfssvc_sock *slp, int error, struct mbuf **mrq, 90 struct mbuf **mb, struct mbuf **mreq, struct mbuf **mrep, 91 caddr_t *bpos); 92int nfsm_srvmtofh_xx(fhandle_t *f, struct nfsrv_descript *nfsd, 93 u_int32_t **tl, struct mbuf **md, caddr_t *dpos); 94void nfsm_clget_xx(u_int32_t **tl, struct mbuf *mb, struct mbuf **mp, 95 char **bp, char **be, caddr_t bpos); 96int nfsm_srvsattr_xx(struct vattr *a, u_int32_t **tl, struct mbuf **md, 97 caddr_t *dpos); 98 99#define nfsm_srvfhtom(f, v3) \ 100do { \ 101 nfsm_srvfhtom_xx((f), (v3), &tl, &mb, &bpos); \ 102} while (0) 103 104#define nfsm_srvpostop_fh(f) \ 105do { \ 106 nfsm_srvpostop_fh_xx((f), &tl, &mb, &bpos); \ 107} while (0) 108 109#define nfsm_srvstrsiz(s, m) \ 110do { \ 111 int t1; \ 112 t1 = nfsm_srvstrsiz_xx(&(s), (m), &tl, &md, &dpos); \ 113 if (t1) { \ 114 error = t1; \ 115 nfsm_reply(0); \ 116 } \ 117} while (0) 118 119#define nfsm_srvnamesiz(s) \ 120do { \ 121 int t1; \ 122 t1 = nfsm_srvnamesiz_xx(&(s), &tl, &md, &dpos); \ 123 if (t1) { \ 124 error = t1; \ 125 nfsm_reply(0); \ 126 } \ 127} while (0) 128 129#define nfsm_reply(s) \ 130do { \ 131 nfs_rephead_xx((s), nfsd, slp, error, mrq, &mb, &mreq, &mrep, &bpos); \ 132 if (error && error == EBADRPC) { \ 133 error = 0; \ 134 goto nfsmout; \ 135 } \ 136} while (0) 137 138#define nfsm_writereply(s) \ 139do { \ 140 nfs_rephead((s), nfsd, slp, error, &mreq, &mb, &bpos); \ 141} while (0) 142 143#define nfsm_srvmtofh(f) \ 144do { \ 145 int t1; \ 146 t1 = nfsm_srvmtofh_xx((f), nfsd, &tl, &md, &dpos); \ 147 if (t1) { \ 148 error = t1; \ 149 nfsm_reply(0); \ 150 } \ 151} while (0) 152 153#define nfsm_clget \ 154do { \ 155 nfsm_clget_xx(&tl, mb, &mp, &bp, &be, bpos); \ 156} while (0) 157 158#define nfsm_srvfillattr(a, f) \ 159do { \ 160 nfsm_srvfattr(nfsd, (a), (f)); \ 161} while (0) 162 163#define nfsm_srvwcc_data(br, b, ar, a) \ 164do { \ 165 nfsm_srvwcc(nfsd, (br), (b), (ar), (a), &mb, &bpos); \ 166} while (0) 167 168#define nfsm_srvpostop_attr(r, a) \ 169do { \ 170 nfsm_srvpostopattr(nfsd, (r), (a), &mb, &bpos); \ 171} while (0) 172 173#define nfsm_srvsattr(a) \ 174do { \ 175 int t1; \ 176 t1 = nfsm_srvsattr_xx((a), &tl, &md, &dpos); \ 177 if (t1) { \ 178 error = t1; \ 179 m_freem(mrep); \ 180 mrep = NULL; \ 181 goto nfsmout; \ 182 } \ 183} while (0) 184 185#endif 186