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1.1 ! root 1: /* ! 2: * Copyright (c) 1989 The Regents of the University of California. ! 3: * 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 7.11 (Berkeley) 4/16/91 ! 37: */ ! 38: ! 39: /* ! 40: * These macros do strange and peculiar things to mbuf chains for ! 41: * the assistance of the nfs code. To attempt to use them for any ! 42: * other purpose will be dangerous. (they make weird assumptions) ! 43: */ ! 44: ! 45: /* ! 46: * First define what the actual subs. return ! 47: */ ! 48: extern struct mbuf *nfsm_reqh(); ! 49: ! 50: #define M_HASCL(m) ((m)->m_flags & M_EXT) ! 51: #define NFSMGETHDR(m) \ ! 52: MGETHDR(m, M_WAIT, MT_DATA); \ ! 53: (m)->m_pkthdr.len = 0; \ ! 54: (m)->m_pkthdr.rcvif = (struct ifnet *)0 ! 55: #define NFSMINOFF(m) \ ! 56: if (M_HASCL(m)) \ ! 57: (m)->m_data = (m)->m_ext.ext_buf; \ ! 58: else \ ! 59: (m)->m_data = (m)->m_dat ! 60: #define NFSMADV(m, s) (m)->m_data += (s) ! 61: #define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \ ! 62: (((m)->m_flags & M_PKTHDR)?MHLEN:MLEN)) ! 63: ! 64: /* ! 65: * Now for the macros that do the simple stuff and call the functions ! 66: * for the hard stuff. ! 67: * These macros use several vars. declared in nfsm_reqhead and these ! 68: * vars. must not be used elsewhere unless you are careful not to corrupt ! 69: * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries ! 70: * that may be used so long as the value is not expected to retained ! 71: * after a macro. ! 72: * I know, this is kind of dorkey, but it makes the actual op functions ! 73: * fairly clean and deals with the mess caused by the xdr discriminating ! 74: * unions. ! 75: */ ! 76: ! 77: #ifndef lint ! 78: #define nfsm_build(a,c,s) \ ! 79: t1 = NFSMSIZ(mb); \ ! 80: if ((s) > (t1-mb->m_len)) { \ ! 81: MGET(mb2, M_WAIT, MT_DATA); \ ! 82: if ((s) > MLEN) \ ! 83: panic("build > MLEN"); \ ! 84: mb->m_next = mb2; \ ! 85: mb = mb2; \ ! 86: mb->m_len = 0; \ ! 87: bpos = mtod(mb, caddr_t); \ ! 88: } \ ! 89: (a) = (c)(bpos); \ ! 90: mb->m_len += (s); \ ! 91: bpos += (s) ! 92: #else /* lint */ ! 93: #define nfsm_build(a,c,s) \ ! 94: t1 = NFSMSIZ(mb); \ ! 95: if ((s) > (t1-mb->m_len)) { \ ! 96: MGET(mb2, M_WAIT, MT_DATA); \ ! 97: mb->m_next = mb2; \ ! 98: mb = mb2; \ ! 99: mb->m_len = 0; \ ! 100: bpos = mtod(mb, caddr_t); \ ! 101: } \ ! 102: (a) = (c)(bpos); \ ! 103: mb->m_len += (s); \ ! 104: bpos += (s) ! 105: #endif /* lint */ ! 106: ! 107: #define nfsm_disect(a,c,s) \ ! 108: t1 = mtod(md, caddr_t)+md->m_len-dpos; \ ! 109: if (t1 >= (s)) { \ ! 110: (a) = (c)(dpos); \ ! 111: dpos += (s); \ ! 112: } else if (error = nfsm_disct(&md, &dpos, (s), t1, TRUE, &cp2)) { \ ! 113: m_freem(mrep); \ ! 114: goto nfsmout; \ ! 115: } else { \ ! 116: (a) = (c)cp2; \ ! 117: } ! 118: ! 119: #define nfsm_disecton(a,c,s) \ ! 120: t1 = mtod(md, caddr_t)+md->m_len-dpos; \ ! 121: if (t1 >= (s)) { \ ! 122: (a) = (c)(dpos); \ ! 123: dpos += (s); \ ! 124: } else if (error = nfsm_disct(&md, &dpos, (s), t1, FALSE, &cp2)) { \ ! 125: m_freem(mrep); \ ! 126: goto nfsmout; \ ! 127: } else { \ ! 128: (a) = (c)cp2; \ ! 129: } ! 130: ! 131: #define nfsm_fhtom(v) \ ! 132: nfsm_build(cp,caddr_t,NFSX_FH); \ ! 133: bcopy((caddr_t)&(VTONFS(v)->n_fh), cp, NFSX_FH) ! 134: ! 135: #define nfsm_srvfhtom(f) \ ! 136: nfsm_build(cp,caddr_t,NFSX_FH); \ ! 137: bcopy((caddr_t)(f), cp, NFSX_FH) ! 138: ! 139: #define nfsm_mtofh(d,v) \ ! 140: { struct nfsnode *np; nfsv2fh_t *fhp; \ ! 141: nfsm_disect(fhp,nfsv2fh_t *,NFSX_FH); \ ! 142: if (error = nfs_nget((d)->v_mount, fhp, &np)) { \ ! 143: m_freem(mrep); \ ! 144: goto nfsmout; \ ! 145: } \ ! 146: (v) = NFSTOV(np); \ ! 147: nfsm_loadattr(v, (struct vattr *)0); \ ! 148: } ! 149: ! 150: #define nfsm_loadattr(v,a) \ ! 151: { struct vnode *tvp = (v); \ ! 152: if (error = nfs_loadattrcache(&tvp, &md, &dpos, (a))) { \ ! 153: m_freem(mrep); \ ! 154: goto nfsmout; \ ! 155: } \ ! 156: (v) = tvp; } ! 157: ! 158: #define nfsm_strsiz(s,m) \ ! 159: nfsm_disect(tl,u_long *,NFSX_UNSIGNED); \ ! 160: if (((s) = fxdr_unsigned(long,*tl)) > (m)) { \ ! 161: m_freem(mrep); \ ! 162: error = EBADRPC; \ ! 163: goto nfsmout; \ ! 164: } ! 165: ! 166: #define nfsm_srvstrsiz(s,m) \ ! 167: nfsm_disect(tl,u_long *,NFSX_UNSIGNED); \ ! 168: if (((s) = fxdr_unsigned(long,*tl)) > (m) || (s) <= 0) { \ ! 169: error = EBADRPC; \ ! 170: nfsm_reply(0); \ ! 171: } ! 172: ! 173: #define nfsm_mtouio(p,s) \ ! 174: if ((s) > 0 && \ ! 175: (error = nfsm_mbuftouio(&md,(p),(s),&dpos))) { \ ! 176: m_freem(mrep); \ ! 177: goto nfsmout; \ ! 178: } ! 179: ! 180: #define nfsm_uiotom(p,s) \ ! 181: if (error = nfsm_uiotombuf((p),&mb,(s),&bpos)) { \ ! 182: m_freem(mreq); \ ! 183: goto nfsmout; \ ! 184: } ! 185: ! 186: #define nfsm_reqhead(a,c,s) \ ! 187: if ((mreq = nfsm_reqh(nfs_prog,nfs_vers,(a),(c),(s),&bpos,&mb,&xid)) == NULL) { \ ! 188: error = ENOBUFS; \ ! 189: goto nfsmout; \ ! 190: } ! 191: ! 192: #define nfsm_reqdone m_freem(mrep); \ ! 193: nfsmout: ! 194: ! 195: #define nfsm_rndup(a) (((a)+3)&(~0x3)) ! 196: ! 197: #define nfsm_request(v, t, p, h) \ ! 198: if (error = nfs_request((v), mreq, xid, (t), (p), (h), \ ! 199: (v)->v_mount, &mrep, &md, &dpos)) \ ! 200: goto nfsmout ! 201: ! 202: #define nfsm_strtom(a,s,m) \ ! 203: if ((s) > (m)) { \ ! 204: m_freem(mreq); \ ! 205: error = ENAMETOOLONG; \ ! 206: goto nfsmout; \ ! 207: } \ ! 208: t2 = nfsm_rndup(s)+NFSX_UNSIGNED; \ ! 209: if(t2<=(NFSMSIZ(mb)-mb->m_len)){ \ ! 210: nfsm_build(tl,u_long *,t2); \ ! 211: *tl++ = txdr_unsigned(s); \ ! 212: *(tl+((t2>>2)-2)) = 0; \ ! 213: bcopy((caddr_t)(a), (caddr_t)tl, (s)); \ ! 214: } else if (error = nfsm_strtmbuf(&mb, &bpos, (a), (s))) { \ ! 215: m_freem(mreq); \ ! 216: goto nfsmout; \ ! 217: } ! 218: ! 219: #define nfsm_srvdone \ ! 220: nfsmout: \ ! 221: return(error) ! 222: ! 223: #ifndef lint ! 224: #define nfsm_reply(s) \ ! 225: { \ ! 226: *repstat = error; \ ! 227: if (error) \ ! 228: nfs_rephead(0, xid, error, mrq, &mb, &bpos); \ ! 229: else \ ! 230: nfs_rephead((s), xid, error, mrq, &mb, &bpos); \ ! 231: m_freem(mrep); \ ! 232: mreq = *mrq; \ ! 233: if (error) \ ! 234: return(0); \ ! 235: } ! 236: #else /* lint */ ! 237: #define nfsm_reply(s) \ ! 238: { \ ! 239: *repstat = error; \ ! 240: if (error) \ ! 241: nfs_rephead(0, xid, error, mrq, &mb, &bpos); \ ! 242: else \ ! 243: nfs_rephead((s), xid, error, mrq, &mb, &bpos); \ ! 244: m_freem(mrep); \ ! 245: mreq = *mrq; \ ! 246: mrep = mreq; \ ! 247: if (error) \ ! 248: return(0); \ ! 249: } ! 250: #endif /* lint */ ! 251: ! 252: #define nfsm_adv(s) \ ! 253: t1 = mtod(md, caddr_t)+md->m_len-dpos; \ ! 254: if (t1 >= (s)) { \ ! 255: dpos += (s); \ ! 256: } else if (error = nfs_adv(&md, &dpos, (s), t1)) { \ ! 257: m_freem(mrep); \ ! 258: goto nfsmout; \ ! 259: } ! 260: ! 261: #define nfsm_srvmtofh(f) \ ! 262: nfsm_disecton(tl, u_long *, NFSX_FH); \ ! 263: bcopy((caddr_t)tl, (caddr_t)f, NFSX_FH) ! 264: ! 265: #define nfsm_clget \ ! 266: if (bp >= be) { \ ! 267: MGET(mp, M_WAIT, MT_DATA); \ ! 268: MCLGET(mp, M_WAIT); \ ! 269: mp->m_len = NFSMSIZ(mp); \ ! 270: if (mp3 == NULL) \ ! 271: mp3 = mp2 = mp; \ ! 272: else { \ ! 273: mp2->m_next = mp; \ ! 274: mp2 = mp; \ ! 275: } \ ! 276: bp = mtod(mp, caddr_t); \ ! 277: be = bp+mp->m_len; \ ! 278: } \ ! 279: tl = (u_long *)bp ! 280: ! 281: #define nfsm_srvfillattr \ ! 282: fp->fa_type = vtonfs_type(vap->va_type); \ ! 283: fp->fa_mode = vtonfs_mode(vap->va_type, vap->va_mode); \ ! 284: fp->fa_nlink = txdr_unsigned(vap->va_nlink); \ ! 285: fp->fa_uid = txdr_unsigned(vap->va_uid); \ ! 286: fp->fa_gid = txdr_unsigned(vap->va_gid); \ ! 287: fp->fa_size = txdr_unsigned(vap->va_size); \ ! 288: fp->fa_blocksize = txdr_unsigned(vap->va_blocksize); \ ! 289: if (vap->va_type == VFIFO) \ ! 290: fp->fa_rdev = 0xffffffff; \ ! 291: else \ ! 292: fp->fa_rdev = txdr_unsigned(vap->va_rdev); \ ! 293: fp->fa_blocks = txdr_unsigned(vap->va_bytes / NFS_FABLKSIZE); \ ! 294: fp->fa_fsid = txdr_unsigned(vap->va_fsid); \ ! 295: fp->fa_fileid = txdr_unsigned(vap->va_fileid); \ ! 296: fp->fa_atime.tv_sec = txdr_unsigned(vap->va_atime.tv_sec); \ ! 297: fp->fa_atime.tv_usec = txdr_unsigned(vap->va_flags); \ ! 298: txdr_time(&vap->va_mtime, &fp->fa_mtime); \ ! 299: fp->fa_ctime.tv_sec = txdr_unsigned(vap->va_ctime.tv_sec); \ ! 300: fp->fa_ctime.tv_usec = txdr_unsigned(vap->va_gen) ! 301:
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