nfsm_subs.h revision 1.9
1 /* $NetBSD: nfsm_subs.h,v 1.9 1996/02/18 11:54:01 fvdl Exp $ */ 2 3 /* 4 * Copyright (c) 1989, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Rick Macklem at The University of Guelph. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)nfsm_subs.h 8.2 (Berkeley) 3/30/95 39 */ 40 41 42 #ifndef _NFS_NFSM_SUBS_H_ 43 #define _NFS_NFSM_SUBS_H_ 44 45 46 /* 47 * These macros do strange and peculiar things to mbuf chains for 48 * the assistance of the nfs code. To attempt to use them for any 49 * other purpose will be dangerous. (they make weird assumptions) 50 */ 51 52 /* 53 * First define what the actual subs. return 54 */ 55 56 #define M_HASCL(m) ((m)->m_flags & M_EXT) 57 #define NFSMINOFF(m) \ 58 if (M_HASCL(m)) \ 59 (m)->m_data = (m)->m_ext.ext_buf; \ 60 else if ((m)->m_flags & M_PKTHDR) \ 61 (m)->m_data = (m)->m_pktdat; \ 62 else \ 63 (m)->m_data = (m)->m_dat 64 #define NFSMADV(m, s) (m)->m_data += (s) 65 #define NFSMSIZ(m) ((M_HASCL(m))?MCLBYTES: \ 66 (((m)->m_flags & M_PKTHDR)?MHLEN:MLEN)) 67 68 /* 69 * Now for the macros that do the simple stuff and call the functions 70 * for the hard stuff. 71 * These macros use several vars. declared in nfsm_reqhead and these 72 * vars. must not be used elsewhere unless you are careful not to corrupt 73 * them. The vars. starting with pN and tN (N=1,2,3,..) are temporaries 74 * that may be used so long as the value is not expected to retained 75 * after a macro. 76 * I know, this is kind of dorkey, but it makes the actual op functions 77 * fairly clean and deals with the mess caused by the xdr discriminating 78 * unions. 79 */ 80 81 #define nfsm_build(a,c,s) \ 82 { if ((s) > M_TRAILINGSPACE(mb)) { \ 83 MGET(mb2, M_WAIT, MT_DATA); \ 84 if ((s) > MLEN) \ 85 panic("build > MLEN"); \ 86 mb->m_next = mb2; \ 87 mb = mb2; \ 88 mb->m_len = 0; \ 89 bpos = mtod(mb, caddr_t); \ 90 } \ 91 (a) = (c)(bpos); \ 92 mb->m_len += (s); \ 93 bpos += (s); } 94 95 #define nfsm_dissect(a, c, s) \ 96 { t1 = mtod(md, caddr_t)+md->m_len-dpos; \ 97 if (t1 >= (s)) { \ 98 (a) = (c)(dpos); \ 99 dpos += (s); \ 100 } else if ((t1 = nfsm_disct(&md, &dpos, (s), t1, &cp2)) != 0){ \ 101 error = t1; \ 102 m_freem(mrep); \ 103 goto nfsmout; \ 104 } else { \ 105 (a) = (c)cp2; \ 106 } } 107 108 #define nfsm_fhtom(v, v3) \ 109 { if (v3) { \ 110 t2 = nfsm_rndup(VTONFS(v)->n_fhsize) + NFSX_UNSIGNED; \ 111 if (t2 <= M_TRAILINGSPACE(mb)) { \ 112 nfsm_build(tl, u_int32_t *, t2); \ 113 *tl++ = txdr_unsigned(VTONFS(v)->n_fhsize); \ 114 *(tl + ((t2>>2) - 2)) = 0; \ 115 bcopy((caddr_t)VTONFS(v)->n_fhp,(caddr_t)tl, \ 116 VTONFS(v)->n_fhsize); \ 117 } else if ((t2 = nfsm_strtmbuf(&mb, &bpos, \ 118 (caddr_t)VTONFS(v)->n_fhp, \ 119 VTONFS(v)->n_fhsize)) != 0) { \ 120 error = t2; \ 121 m_freem(mreq); \ 122 goto nfsmout; \ 123 } \ 124 } else { \ 125 nfsm_build(cp, caddr_t, NFSX_V2FH); \ 126 bcopy((caddr_t)VTONFS(v)->n_fhp, cp, NFSX_V2FH); \ 127 } } 128 129 #define nfsm_srvfhtom(f, v3) \ 130 { if (v3) { \ 131 nfsm_build(tl, u_int32_t *, NFSX_UNSIGNED + NFSX_V3FH); \ 132 *tl++ = txdr_unsigned(NFSX_V3FH); \ 133 bcopy((caddr_t)(f), (caddr_t)tl, NFSX_V3FH); \ 134 } else { \ 135 nfsm_build(cp, caddr_t, NFSX_V2FH); \ 136 bcopy((caddr_t)(f), cp, NFSX_V2FH); \ 137 } } 138 139 #define nfsm_srvpostop_fh(f) \ 140 { nfsm_build(tl, u_int32_t *, 2 * NFSX_UNSIGNED + NFSX_V3FH); \ 141 *tl++ = nfs_true; \ 142 *tl++ = txdr_unsigned(NFSX_V3FH); \ 143 bcopy((caddr_t)(f), (caddr_t)tl, NFSX_V3FH); \ 144 } 145 146 #define nfsm_mtofh(d, v, v3, f) \ 147 { struct nfsnode *ttnp; nfsfh_t *ttfhp; int ttfhsize; \ 148 if (v3) { \ 149 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 150 (f) = fxdr_unsigned(int, *tl); \ 151 } else \ 152 (f) = 1; \ 153 if (f) { \ 154 nfsm_getfh(ttfhp, ttfhsize, (v3)); \ 155 if ((t1 = nfs_nget((d)->v_mount, ttfhp, ttfhsize, \ 156 &ttnp)) != 0) { \ 157 error = t1; \ 158 m_freem(mrep); \ 159 goto nfsmout; \ 160 } \ 161 (v) = NFSTOV(ttnp); \ 162 } \ 163 if (v3) { \ 164 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 165 if (f) \ 166 (f) = fxdr_unsigned(int, *tl); \ 167 else if (fxdr_unsigned(int, *tl)) \ 168 nfsm_adv(NFSX_V3FATTR); \ 169 } \ 170 if (f) \ 171 nfsm_loadattr((v), (struct vattr *)0); \ 172 } 173 174 #define nfsm_getfh(f, s, v3) \ 175 { if (v3) { \ 176 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 177 if (((s) = fxdr_unsigned(int, *tl)) <= 0 || \ 178 (s) > NFSX_V3FHMAX) { \ 179 m_freem(mrep); \ 180 error = EBADRPC; \ 181 goto nfsmout; \ 182 } \ 183 } else \ 184 (s) = NFSX_V2FH; \ 185 nfsm_dissect((f), nfsfh_t *, nfsm_rndup(s)); } 186 187 #define nfsm_loadattr(v, a) \ 188 { struct vnode *ttvp = (v); \ 189 if ((t1 = nfs_loadattrcache(&ttvp, &md, &dpos, (a))) != 0) { \ 190 error = t1; \ 191 m_freem(mrep); \ 192 goto nfsmout; \ 193 } \ 194 (v) = ttvp; } 195 196 #define nfsm_postop_attr(v, f) \ 197 { struct vnode *ttvp = (v); \ 198 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 199 if (((f) = fxdr_unsigned(int, *tl)) != 0) { \ 200 if ((t1 = nfs_loadattrcache(&ttvp, &md, &dpos, \ 201 (struct vattr *)0)) != 0) { \ 202 error = t1; \ 203 (f) = 0; \ 204 m_freem(mrep); \ 205 goto nfsmout; \ 206 } \ 207 (v) = ttvp; \ 208 } } 209 210 /* Used as (f) for nfsm_wcc_data() */ 211 #define NFSV3_WCCRATTR 0 212 #define NFSV3_WCCCHK 1 213 214 #define nfsm_wcc_data(v, f) \ 215 { int ttattrf, ttretf = 0; \ 216 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 217 if (*tl == nfs_true) { \ 218 nfsm_dissect(tl, u_int32_t *, 6 * NFSX_UNSIGNED); \ 219 if (f) \ 220 ttretf = (VTONFS(v)->n_mtime == \ 221 fxdr_unsigned(u_int32_t, *(tl + 2))); \ 222 } \ 223 nfsm_postop_attr((v), ttattrf); \ 224 if (f) { \ 225 (f) = ttretf; \ 226 } else { \ 227 (f) = ttattrf; \ 228 } } 229 230 #define nfsm_v3sattr(s, a) \ 231 { (s)->sa_modetrue = nfs_true; \ 232 (s)->sa_mode = vtonfsv3_mode((a)->va_mode); \ 233 (s)->sa_uidfalse = nfs_false; \ 234 (s)->sa_gidfalse = nfs_false; \ 235 (s)->sa_sizefalse = nfs_false; \ 236 (s)->sa_atimetype = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); \ 237 txdr_nfsv3time(&(a)->va_atime, &(s)->sa_atime); \ 238 (s)->sa_mtimetype = txdr_unsigned(NFSV3SATTRTIME_TOCLIENT); \ 239 txdr_nfsv3time(&(a)->va_mtime, &(s)->sa_mtime); \ 240 } 241 242 #define nfsm_strsiz(s,m) \ 243 { nfsm_dissect(tl,u_int32_t *,NFSX_UNSIGNED); \ 244 if (((s) = fxdr_unsigned(int32_t,*tl)) > (m)) { \ 245 m_freem(mrep); \ 246 error = EBADRPC; \ 247 goto nfsmout; \ 248 } } 249 250 #define nfsm_srvstrsiz(s,m) \ 251 { nfsm_dissect(tl,u_int32_t *,NFSX_UNSIGNED); \ 252 if (((s) = fxdr_unsigned(int32_t,*tl)) > (m) || (s) <= 0) { \ 253 error = EBADRPC; \ 254 nfsm_reply(0); \ 255 } } 256 257 #define nfsm_srvnamesiz(s) \ 258 { nfsm_dissect(tl,u_int32_t *,NFSX_UNSIGNED); \ 259 if (((s) = fxdr_unsigned(int32_t,*tl)) > NFS_MAXNAMLEN) \ 260 error = NFSERR_NAMETOL; \ 261 if ((s) <= 0) \ 262 error = EBADRPC; \ 263 if (error) \ 264 nfsm_reply(0); \ 265 } 266 267 #define nfsm_mtouio(p,s) \ 268 if ((s) > 0 && \ 269 (t1 = nfsm_mbuftouio(&md,(p),(s),&dpos)) != 0) { \ 270 error = t1; \ 271 m_freem(mrep); \ 272 goto nfsmout; \ 273 } 274 275 #define nfsm_uiotom(p,s) \ 276 if ((t1 = nfsm_uiotombuf((p),&mb,(s),&bpos)) != 0) { \ 277 error = t1; \ 278 m_freem(mreq); \ 279 goto nfsmout; \ 280 } 281 282 #define nfsm_reqhead(v,a,s) \ 283 mb = mreq = nfsm_reqh((v),(a),(s),&bpos) 284 285 #define nfsm_reqdone m_freem(mrep); \ 286 nfsmout: 287 288 #define nfsm_rndup(a) (((a)+3)&(~0x3)) 289 290 #define nfsm_request(v, t, p, c) \ 291 if ((error = nfs_request((v), mreq, (t), (p), \ 292 (c), &mrep, &md, &dpos)) != 0) { \ 293 if (error & NFSERR_RETERR) \ 294 error &= ~NFSERR_RETERR; \ 295 else \ 296 goto nfsmout; \ 297 } 298 299 #define nfsm_strtom(a,s,m) \ 300 if ((s) > (m)) { \ 301 m_freem(mreq); \ 302 error = ENAMETOOLONG; \ 303 goto nfsmout; \ 304 } \ 305 t2 = nfsm_rndup(s)+NFSX_UNSIGNED; \ 306 if (t2 <= M_TRAILINGSPACE(mb)) { \ 307 nfsm_build(tl,u_int32_t *,t2); \ 308 *tl++ = txdr_unsigned(s); \ 309 *(tl+((t2>>2)-2)) = 0; \ 310 bcopy((caddr_t)(a), (caddr_t)tl, (s)); \ 311 } else if ((t2 = nfsm_strtmbuf(&mb, &bpos, (a), (s))) != 0) { \ 312 error = t2; \ 313 m_freem(mreq); \ 314 goto nfsmout; \ 315 } 316 317 #define nfsm_srvdone \ 318 nfsmout: \ 319 return(error) 320 321 #define nfsm_reply(s) \ 322 { \ 323 nfsd->nd_repstat = error; \ 324 if (error && !(nfsd->nd_flag & ND_NFSV3)) \ 325 (void) nfs_rephead(0, nfsd, slp, error, cache, &frev, \ 326 mrq, &mb, &bpos); \ 327 else \ 328 (void) nfs_rephead((s), nfsd, slp, error, cache, &frev, \ 329 mrq, &mb, &bpos); \ 330 m_freem(mrep); \ 331 mreq = *mrq; \ 332 if (error && (!(nfsd->nd_flag & ND_NFSV3) || \ 333 error == EBADRPC)) \ 334 return(0); \ 335 } 336 337 #define nfsm_writereply(s, v3) \ 338 { \ 339 nfsd->nd_repstat = error; \ 340 if (error && !(v3)) \ 341 (void) nfs_rephead(0, nfsd, slp, error, cache, &frev, \ 342 &mreq, &mb, &bpos); \ 343 else \ 344 (void) nfs_rephead((s), nfsd, slp, error, cache, &frev, \ 345 &mreq, &mb, &bpos); \ 346 } 347 348 #define nfsm_adv(s) \ 349 { t1 = mtod(md, caddr_t)+md->m_len-dpos; \ 350 if (t1 >= (s)) { \ 351 dpos += (s); \ 352 } else if ((t1 = nfs_adv(&md, &dpos, (s), t1)) != 0) { \ 353 error = t1; \ 354 m_freem(mrep); \ 355 goto nfsmout; \ 356 } } 357 358 #define nfsm_srvmtofh(f) \ 359 { if (nfsd->nd_flag & ND_NFSV3) { \ 360 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 361 if (fxdr_unsigned(int, *tl) != NFSX_V3FH) { \ 362 error = EBADRPC; \ 363 nfsm_reply(0); \ 364 } \ 365 } \ 366 nfsm_dissect(tl, u_int32_t *, NFSX_V3FH); \ 367 bcopy((caddr_t)tl, (caddr_t)(f), NFSX_V3FH); \ 368 if ((nfsd->nd_flag & ND_NFSV3) == 0) \ 369 nfsm_adv(NFSX_V2FH - NFSX_V3FH); \ 370 } 371 372 #define nfsm_clget \ 373 if (bp >= be) { \ 374 if (mp == mb) \ 375 mp->m_len += bp-bpos; \ 376 MGET(mp, M_WAIT, MT_DATA); \ 377 MCLGET(mp, M_WAIT); \ 378 mp->m_len = NFSMSIZ(mp); \ 379 mp2->m_next = mp; \ 380 mp2 = mp; \ 381 bp = mtod(mp, caddr_t); \ 382 be = bp+mp->m_len; \ 383 } \ 384 tl = (u_int32_t *)bp 385 386 #define nfsm_srvfillattr(a, f) \ 387 nfsm_srvfattr(nfsd, (a), (f)) 388 389 #define nfsm_srvwcc_data(br, b, ar, a) \ 390 nfsm_srvwcc(nfsd, (br), (b), (ar), (a), &mb, &bpos) 391 392 #define nfsm_srvpostop_attr(r, a) \ 393 nfsm_srvpostopattr(nfsd, (r), (a), &mb, &bpos) 394 395 #define nfsm_srvsattr(a) \ 396 { nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 397 if (*tl == nfs_true) { \ 398 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 399 (a)->va_mode = nfstov_mode(*tl); \ 400 } \ 401 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 402 if (*tl == nfs_true) { \ 403 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 404 (a)->va_uid = fxdr_unsigned(uid_t, *tl); \ 405 } \ 406 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 407 if (*tl == nfs_true) { \ 408 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 409 (a)->va_gid = fxdr_unsigned(gid_t, *tl); \ 410 } \ 411 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 412 if (*tl == nfs_true) { \ 413 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); \ 414 fxdr_hyper(tl, &(a)->va_size); \ 415 } \ 416 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 417 switch (fxdr_unsigned(int, *tl)) { \ 418 case NFSV3SATTRTIME_TOCLIENT: \ 419 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); \ 420 fxdr_nfsv3time(tl, &(a)->va_atime); \ 421 break; \ 422 case NFSV3SATTRTIME_TOSERVER: \ 423 (a)->va_atime.tv_sec = time.tv_sec; \ 424 (a)->va_atime.tv_nsec = time.tv_usec * 1000; \ 425 break; \ 426 }; \ 427 nfsm_dissect(tl, u_int32_t *, NFSX_UNSIGNED); \ 428 switch (fxdr_unsigned(int, *tl)) { \ 429 case NFSV3SATTRTIME_TOCLIENT: \ 430 nfsm_dissect(tl, u_int32_t *, 2 * NFSX_UNSIGNED); \ 431 fxdr_nfsv3time(tl, &(a)->va_mtime); \ 432 break; \ 433 case NFSV3SATTRTIME_TOSERVER: \ 434 (a)->va_mtime.tv_sec = time.tv_sec; \ 435 (a)->va_mtime.tv_nsec = time.tv_usec * 1000; \ 436 break; \ 437 }; } 438 439 #endif 440
Indexes created Sun Sep 28 12:09:53 GMT 2025