nfs_common.h revision 203732
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: head/sys/nfs/nfs_common.h 203732 2010-02-09 23:45:14Z marius $ 34 */ 35 36#ifndef _NFS_NFS_COMMON_H_ 37#define _NFS_NFS_COMMON_H_ 38 39extern enum vtype nv3tov_type[]; 40extern nfstype nfsv3_type[]; 41 42#define vtonfsv2_mode(t, m) \ 43 txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : MAKEIMODE((t), (m))) 44 45#define nfsv3tov_type(a) nv3tov_type[fxdr_unsigned(u_int32_t,(a))&0x7] 46#define vtonfsv3_type(a) txdr_unsigned(nfsv3_type[((int32_t)(a))]) 47 48int nfs_adv(struct mbuf **, caddr_t *, int, int); 49u_quad_t nfs_curusec(void); 50void *nfsm_disct(struct mbuf **, caddr_t *, int, int, int); 51int nfs_realign(struct mbuf **, int); 52 53/* ****************************** */ 54/* Build request/reply phase macros */ 55 56void *nfsm_build_xx(int s, struct mbuf **mb, caddr_t *bpos); 57 58#define nfsm_build(c, s) \ 59 (c)nfsm_build_xx((s), &mb, &bpos) 60 61/* ****************************** */ 62/* Interpretation phase macros */ 63 64void *nfsm_dissect_xx(int s, struct mbuf **md, caddr_t *dpos); 65void *nfsm_dissect_xx_nonblock(int s, struct mbuf **md, caddr_t *dpos); 66int nfsm_strsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos); 67int nfsm_adv_xx(int s, struct mbuf **md, caddr_t *dpos); 68 69/* Error check helpers */ 70#define nfsm_dcheck(t1, mrep) \ 71do { \ 72 if (t1 != 0) { \ 73 error = t1; \ 74 m_freem((mrep)); \ 75 (mrep) = NULL; \ 76 goto nfsmout; \ 77 } \ 78} while (0) 79 80#define nfsm_dcheckp(retp, mrep) \ 81do { \ 82 if (retp == NULL) { \ 83 error = EBADRPC; \ 84 m_freem((mrep)); \ 85 (mrep) = NULL; \ 86 goto nfsmout; \ 87 } \ 88} while (0) 89 90#define nfsm_dissect(c, s) \ 91({ \ 92 void *ret; \ 93 ret = nfsm_dissect_xx((s), &md, &dpos); \ 94 nfsm_dcheckp(ret, mrep); \ 95 (c)ret; \ 96}) 97 98#define nfsm_dissect_nonblock(c, s) \ 99({ \ 100 void *ret; \ 101 ret = nfsm_dissect_xx_nonblock((s), &md, &dpos); \ 102 nfsm_dcheckp(ret, mrep); \ 103 (c)ret; \ 104}) 105 106#define nfsm_strsiz(s,m) \ 107do { \ 108 int t1; \ 109 t1 = nfsm_strsiz_xx(&(s), (m), &md, &dpos); \ 110 nfsm_dcheck(t1, mrep); \ 111} while(0) 112 113#define nfsm_mtouio(p,s) \ 114do {\ 115 int32_t t1 = 0; \ 116 if ((s) > 0) \ 117 t1 = nfsm_mbuftouio(&md, (p), (s), &dpos); \ 118 nfsm_dcheck(t1, mrep); \ 119} while (0) 120 121#define nfsm_rndup(a) (((a)+3)&(~0x3)) 122 123#define nfsm_adv(s) \ 124do { \ 125 int t1; \ 126 t1 = nfsm_adv_xx((s), &md, &dpos); \ 127 nfsm_dcheck(t1, mrep); \ 128} while (0) 129 130#ifdef __NO_STRICT_ALIGNMENT 131#define nfsm_aligned(p, t) 1 132#else 133#define nfsm_aligned(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0) 134#endif 135 136#endif 137