1 /* $NetBSD: nfs_common.h,v 1.1.1.1 2013/09/30 07:19:32 dholland Exp $ */ 2 /*- 3 * Copyright (c) 1989, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Rick Macklem at The University of Guelph. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95 34 * FreeBSD: head/sys/nfs/nfs_common.h 245568 2013-01-17 19:03:24Z jhb 35 * $NetBSD: nfs_common.h,v 1.1.1.1 2013/09/30 07:19:32 dholland Exp $ 36 */ 37 38 #ifndef _NFS_NFS_COMMON_H_ 39 #define _NFS_NFS_COMMON_H_ 40 41 extern enum vtype nv3tov_type[]; 42 extern nfstype nfsv3_type[]; 43 44 #define vtonfsv2_mode(t, m) \ 45 txdr_unsigned(((t) == VFIFO) ? MAKEIMODE(VCHR, (m)) : MAKEIMODE((t), (m))) 46 47 #define nfsv3tov_type(a) nv3tov_type[fxdr_unsigned(u_int32_t,(a))&0x7] 48 #define vtonfsv3_type(a) txdr_unsigned(nfsv3_type[((int32_t)(a))]) 49 50 int nfs_adv(struct mbuf **, caddr_t *, int, int); 51 void *nfsm_disct(struct mbuf **, caddr_t *, int, int, int); 52 int nfs_realign(struct mbuf **, int); 53 54 /* ****************************** */ 55 /* Build request/reply phase macros */ 56 57 void *nfsm_build_xx(int s, struct mbuf **mb, caddr_t *bpos); 58 59 #define nfsm_build(c, s) \ 60 (c)nfsm_build_xx((s), &mb, &bpos) 61 62 /* ****************************** */ 63 /* Interpretation phase macros */ 64 65 void *nfsm_dissect_xx(int s, struct mbuf **md, caddr_t *dpos); 66 void *nfsm_dissect_xx_nonblock(int s, struct mbuf **md, caddr_t *dpos); 67 int nfsm_strsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos); 68 int nfsm_adv_xx(int s, struct mbuf **md, caddr_t *dpos); 69 70 /* Error check helpers */ 71 #define nfsm_dcheck(t1, mrep) \ 72 do { \ 73 if (t1 != 0) { \ 74 error = t1; \ 75 m_freem((mrep)); \ 76 (mrep) = NULL; \ 77 goto nfsmout; \ 78 } \ 79 } while (0) 80 81 #define nfsm_dcheckp(retp, mrep) \ 82 do { \ 83 if (retp == NULL) { \ 84 error = EBADRPC; \ 85 m_freem((mrep)); \ 86 (mrep) = NULL; \ 87 goto nfsmout; \ 88 } \ 89 } while (0) 90 91 #define nfsm_dissect(c, s) \ 92 ({ \ 93 void *ret; \ 94 ret = nfsm_dissect_xx((s), &md, &dpos); \ 95 nfsm_dcheckp(ret, mrep); \ 96 (c)ret; \ 97 }) 98 99 #define nfsm_dissect_nonblock(c, s) \ 100 ({ \ 101 void *ret; \ 102 ret = nfsm_dissect_xx_nonblock((s), &md, &dpos); \ 103 nfsm_dcheckp(ret, mrep); \ 104 (c)ret; \ 105 }) 106 107 #define nfsm_strsiz(s,m) \ 108 do { \ 109 int t1; \ 110 t1 = nfsm_strsiz_xx(&(s), (m), &md, &dpos); \ 111 nfsm_dcheck(t1, mrep); \ 112 } while(0) 113 114 #define nfsm_mtouio(p,s) \ 115 do {\ 116 int32_t t1 = 0; \ 117 if ((s) > 0) \ 118 t1 = nfsm_mbuftouio(&md, (p), (s), &dpos); \ 119 nfsm_dcheck(t1, mrep); \ 120 } while (0) 121 122 #define nfsm_rndup(a) (((a)+3)&(~0x3)) 123 124 #define nfsm_adv(s) \ 125 do { \ 126 int t1; \ 127 t1 = nfsm_adv_xx((s), &md, &dpos); \ 128 nfsm_dcheck(t1, mrep); \ 129 } while (0) 130 131 #ifdef __NO_STRICT_ALIGNMENT 132 #define nfsm_aligned(p, t) 1 133 #else 134 #define nfsm_aligned(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0) 135 #endif 136 137 #endif 138