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: stable/10/sys/nfs/nfs_common.h 245568 2013-01-17 19:03:24Z jhb $ 34 */ 35 36 #ifndef _NFS_NFS_COMMON_H_ 37 #define _NFS_NFS_COMMON_H_ 38 39 extern enum vtype nv3tov_type[]; 40 extern 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 48 int nfs_adv(struct mbuf **, caddr_t *, int, int); 49 void *nfsm_disct(struct mbuf **, caddr_t *, int, int, int); 50 int nfs_realign(struct mbuf **, int); 51 52 /* ****************************** */ 53 /* Build request/reply phase macros */ 54 55 void *nfsm_build_xx(int s, struct mbuf **mb, caddr_t *bpos); 56 57 #define nfsm_build(c, s) \ 58 (c)nfsm_build_xx((s), &mb, &bpos) 59 60 /* ****************************** */ 61 /* Interpretation phase macros */ 62 63 void *nfsm_dissect_xx(int s, struct mbuf **md, caddr_t *dpos); 64 void *nfsm_dissect_xx_nonblock(int s, struct mbuf **md, caddr_t *dpos); 65 int nfsm_strsiz_xx(int *s, int m, struct mbuf **md, caddr_t *dpos); 66 int nfsm_adv_xx(int s, struct mbuf **md, caddr_t *dpos); 67 68 /* Error check helpers */ 69 #define nfsm_dcheck(t1, mrep) \ 70 do { \ 71 if (t1 != 0) { \ 72 error = t1; \ 73 m_freem((mrep)); \ 74 (mrep) = NULL; \ 75 goto nfsmout; \ 76 } \ 77 } while (0) 78 79 #define nfsm_dcheckp(retp, mrep) \ 80 do { \ 81 if (retp == NULL) { \ 82 error = EBADRPC; \ 83 m_freem((mrep)); \ 84 (mrep) = NULL; \ 85 goto nfsmout; \ 86 } \ 87 } while (0) 88 89 #define nfsm_dissect(c, s) \ 90 ({ \ 91 void *ret; \ 92 ret = nfsm_dissect_xx((s), &md, &dpos); \ 93 nfsm_dcheckp(ret, mrep); \ 94 (c)ret; \ 95 }) 96 97 #define nfsm_dissect_nonblock(c, s) \ 98 ({ \ 99 void *ret; \ 100 ret = nfsm_dissect_xx_nonblock((s), &md, &dpos); \ 101 nfsm_dcheckp(ret, mrep); \ 102 (c)ret; \ 103 }) 104 105 #define nfsm_strsiz(s,m) \ 106 do { \ 107 int t1; \ 108 t1 = nfsm_strsiz_xx(&(s), (m), &md, &dpos); \ 109 nfsm_dcheck(t1, mrep); \ 110 } while(0) 111 112 #define nfsm_mtouio(p,s) \ 113 do {\ 114 int32_t t1 = 0; \ 115 if ((s) > 0) \ 116 t1 = nfsm_mbuftouio(&md, (p), (s), &dpos); \ 117 nfsm_dcheck(t1, mrep); \ 118 } while (0) 119 120 #define nfsm_rndup(a) (((a)+3)&(~0x3)) 121 122 #define nfsm_adv(s) \ 123 do { \ 124 int t1; \ 125 t1 = nfsm_adv_xx((s), &md, &dpos); \ 126 nfsm_dcheck(t1, mrep); \ 127 } while (0) 128 129 #ifdef __NO_STRICT_ALIGNMENT 130 #define nfsm_aligned(p, t) 1 131 #else 132 #define nfsm_aligned(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0) 133 #endif 134 135 #endif 136