puffs_vnops.c revision 1.18
1 /* $NetBSD: puffs_vnops.c,v 1.18 2006/12/01 12:48:31 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2005, 2006 Antti Kantee. All Rights Reserved. 5 * 6 * Development of this software was supported by the 7 * Google Summer of Code program and the Ulla Tuominen Foundation. 8 * The Google SoC project was mentored by Bill Studenmund. 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. The name of the company nor the name of the author may be used to 19 * endorse or promote products derived from this software without specific 20 * prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 23 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: puffs_vnops.c,v 1.18 2006/12/01 12:48:31 pooka Exp $"); 37 38 #include <sys/param.h> 39 #include <sys/vnode.h> 40 #include <sys/mount.h> 41 #include <sys/malloc.h> 42 #include <sys/namei.h> 43 44 #include <fs/puffs/puffs_msgif.h> 45 #include <fs/puffs/puffs_sys.h> 46 47 #include <miscfs/fifofs/fifo.h> 48 #include <miscfs/genfs/genfs.h> 49 #include <miscfs/specfs/specdev.h> 50 51 int puffs_lookup(void *); 52 int puffs_create(void *); 53 int puffs_access(void *); 54 int puffs_mknod(void *); 55 int puffs_open(void *); 56 int puffs_close(void *); 57 int puffs_getattr(void *); 58 int puffs_setattr(void *); 59 int puffs_revoke(void *); 60 int puffs_reclaim(void *); 61 int puffs_readdir(void *); 62 int puffs_poll(void *); 63 int puffs_fsync(void *); 64 int puffs_seek(void *); 65 int puffs_remove(void *); 66 int puffs_mkdir(void *); 67 int puffs_rmdir(void *); 68 int puffs_link(void *); 69 int puffs_readlink(void *); 70 int puffs_symlink(void *); 71 int puffs_rename(void *); 72 int puffs_read(void *); 73 int puffs_write(void *); 74 int puffs_fcntl(void *); 75 int puffs_ioctl(void *); 76 int puffs_inactive(void *); 77 int puffs_print(void *); 78 int puffs_pathconf(void *); 79 int puffs_advlock(void *); 80 int puffs_strategy(void *); 81 int puffs_bmap(void *); 82 int puffs_mmap(void *); 83 84 int puffs_checkop(void *); 85 86 87 /* VOP_LEASE() not included */ 88 89 int puffs_generic(void *); 90 91 #if 0 92 #define puffs_lock genfs_lock 93 #define puffs_unlock genfs_unlock 94 #define puffs_islocked genfs_islocked 95 #else 96 int puffs_lock(void *); 97 int puffs_unlock(void *); 98 int puffs_islocked(void *); 99 #endif 100 101 /* 102 * no special specops for now. hmm, probably don't want to handle 103 * these synchronously, since they don't actually demand any 104 * response. so maybe we need another touser-type thing... 105 */ 106 #define puffsspec_read spec_read 107 #define puffsspec_write spec_write 108 #define puffsspec_close spec_close 109 /* no special fifo-ooops either */ 110 #define puffsfifo_read fifo_read 111 #define puffsfifo_write fifo_write 112 #define puffsfifo_close fifo_close 113 114 int (**puffs_vnodeop_p)(void *); 115 const struct vnodeopv_entry_desc puffs_vnodeop_entries[] = { 116 { &vop_default_desc, vn_default_error }, 117 { &vop_lookup_desc, puffs_lookup }, /* REAL lookup */ 118 { &vop_create_desc, puffs_checkop }, /* create */ 119 { &vop_mknod_desc, puffs_checkop }, /* mknod */ 120 { &vop_open_desc, puffs_checkop }, /* open */ 121 { &vop_close_desc, puffs_checkop }, /* close */ 122 { &vop_access_desc, puffs_checkop }, /* access */ 123 { &vop_getattr_desc, puffs_checkop }, /* getattr */ 124 { &vop_setattr_desc, puffs_checkop }, /* setattr */ 125 { &vop_read_desc, puffs_checkop }, /* read */ 126 { &vop_write_desc, puffs_checkop }, /* write */ 127 { &vop_fcntl_desc, puffs_checkop }, /* fcntl */ 128 { &vop_ioctl_desc, puffs_checkop }, /* ioctl */ 129 { &vop_fsync_desc, puffs_checkop }, /* fsync */ 130 { &vop_seek_desc, puffs_checkop }, /* seek */ 131 { &vop_remove_desc, puffs_checkop }, /* remove */ 132 { &vop_link_desc, puffs_checkop }, /* link */ 133 { &vop_rename_desc, puffs_checkop }, /* rename */ 134 { &vop_mkdir_desc, puffs_checkop }, /* mkdir */ 135 { &vop_rmdir_desc, puffs_checkop }, /* rmdir */ 136 { &vop_symlink_desc, puffs_checkop }, /* symlink */ 137 { &vop_readdir_desc, puffs_checkop }, /* readdir */ 138 { &vop_readlink_desc, puffs_checkop }, /* readlink */ 139 { &vop_getpages_desc, puffs_checkop }, /* getpages */ 140 { &vop_putpages_desc, puffs_checkop }, /* putpages */ 141 { &vop_pathconf_desc, puffs_checkop }, /* pathconf */ 142 { &vop_advlock_desc, puffs_checkop }, /* advlock */ 143 { &vop_strategy_desc, puffs_strategy }, /* REAL strategy */ 144 { &vop_revoke_desc, puffs_revoke }, /* REAL revoke */ 145 { &vop_abortop_desc, genfs_abortop }, /* REAL abortop */ 146 { &vop_inactive_desc, puffs_inactive }, /* REAL inactive */ 147 { &vop_reclaim_desc, puffs_reclaim }, /* REAL reclaim */ 148 { &vop_lock_desc, puffs_lock }, /* REAL lock */ 149 { &vop_unlock_desc, puffs_unlock }, /* REAL unlock */ 150 { &vop_bmap_desc, puffs_bmap }, /* REAL bmap */ 151 { &vop_print_desc, puffs_print }, /* REAL print */ 152 { &vop_islocked_desc, puffs_islocked }, /* REAL islocked */ 153 { &vop_bwrite_desc, genfs_nullop }, /* REAL bwrite */ 154 { &vop_mmap_desc, puffs_mmap }, /* REAL mmap */ 155 156 { &vop_poll_desc, genfs_eopnotsupp }, /* poll XXX */ 157 { &vop_poll_desc, genfs_eopnotsupp }, /* kqfilter XXX */ 158 { NULL, NULL } 159 }; 160 const struct vnodeopv_desc puffs_vnodeop_opv_desc = 161 { &puffs_vnodeop_p, puffs_vnodeop_entries }; 162 163 164 int (**puffs_specop_p)(void *); 165 const struct vnodeopv_entry_desc puffs_specop_entries[] = { 166 { &vop_default_desc, vn_default_error }, 167 { &vop_lookup_desc, spec_lookup }, /* lookup, ENOTDIR */ 168 { &vop_create_desc, spec_create }, /* genfs_badop */ 169 { &vop_mknod_desc, spec_mknod }, /* genfs_badop */ 170 { &vop_open_desc, spec_open }, /* spec_open */ 171 { &vop_close_desc, puffsspec_close }, /* close */ 172 { &vop_access_desc, puffs_access }, /* access */ 173 { &vop_getattr_desc, puffs_getattr }, /* getattr */ 174 { &vop_setattr_desc, puffs_setattr }, /* setattr */ 175 { &vop_read_desc, puffsspec_read }, /* read */ 176 { &vop_write_desc, puffsspec_write }, /* write */ 177 { &vop_lease_desc, spec_lease_check }, /* genfs_nullop */ 178 { &vop_ioctl_desc, spec_ioctl }, /* spec_ioctl */ 179 { &vop_fcntl_desc, genfs_fcntl }, /* dummy */ 180 { &vop_poll_desc, spec_poll }, /* spec_poll */ 181 { &vop_kqfilter_desc, spec_kqfilter }, /* spec_kqfilter */ 182 { &vop_revoke_desc, spec_revoke }, /* genfs_revoke */ 183 { &vop_mmap_desc, spec_mmap }, /* genfs_mmap (dummy) */ 184 { &vop_fsync_desc, spec_fsync }, /* vflushbuf */ 185 { &vop_seek_desc, spec_seek }, /* genfs_nullop */ 186 { &vop_remove_desc, spec_remove }, /* genfs_badop */ 187 { &vop_link_desc, spec_link }, /* genfs_badop */ 188 { &vop_rename_desc, spec_rename }, /* genfs_badop */ 189 { &vop_mkdir_desc, spec_mkdir }, /* genfs_badop */ 190 { &vop_rmdir_desc, spec_rmdir }, /* genfs_badop */ 191 { &vop_symlink_desc, spec_symlink }, /* genfs_badop */ 192 { &vop_readdir_desc, spec_readdir }, /* genfs_badop */ 193 { &vop_readlink_desc, spec_readlink }, /* genfs_badop */ 194 { &vop_abortop_desc, spec_abortop }, /* genfs_badop */ 195 { &vop_inactive_desc, puffs_inactive }, /* inactive */ 196 { &vop_reclaim_desc, puffs_reclaim }, /* reclaim */ 197 { &vop_lock_desc, puffs_lock }, /* lock */ 198 { &vop_unlock_desc, puffs_unlock }, /* unlock */ 199 { &vop_bmap_desc, spec_bmap }, /* dummy */ 200 { &vop_strategy_desc, spec_strategy }, /* dev strategy */ 201 { &vop_print_desc, puffs_print }, /* print */ 202 { &vop_islocked_desc, puffs_islocked }, /* islocked */ 203 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 204 { &vop_advlock_desc, spec_advlock }, /* lf_advlock */ 205 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 206 { &vop_getpages_desc, spec_getpages }, /* genfs_getpages */ 207 { &vop_putpages_desc, spec_putpages }, /* genfs_putpages */ 208 #if 0 209 { &vop_openextattr_desc, _openextattr }, /* openextattr */ 210 { &vop_closeextattr_desc, _closeextattr }, /* closeextattr */ 211 { &vop_getextattr_desc, _getextattr }, /* getextattr */ 212 { &vop_setextattr_desc, _setextattr }, /* setextattr */ 213 { &vop_listextattr_desc, _listextattr }, /* listextattr */ 214 { &vop_deleteextattr_desc, _deleteextattr }, /* deleteextattr */ 215 #endif 216 { NULL, NULL } 217 }; 218 const struct vnodeopv_desc puffs_specop_opv_desc = 219 { &puffs_specop_p, puffs_specop_entries }; 220 221 int (**puffs_fifoop_p)(void *); 222 const struct vnodeopv_entry_desc puffs_fifoop_entries[] = { 223 { &vop_default_desc, vn_default_error }, 224 { &vop_lookup_desc, fifo_lookup }, /* lookup, ENOTDIR */ 225 { &vop_create_desc, fifo_create }, /* genfs_badop */ 226 { &vop_mknod_desc, fifo_mknod }, /* genfs_badop */ 227 { &vop_open_desc, fifo_open }, /* open */ 228 { &vop_close_desc, puffsfifo_close }, /* close */ 229 { &vop_access_desc, puffs_access }, /* access */ 230 { &vop_getattr_desc, puffs_getattr }, /* getattr */ 231 { &vop_setattr_desc, puffs_setattr }, /* setattr */ 232 { &vop_read_desc, puffsfifo_read }, /* read */ 233 { &vop_write_desc, puffsfifo_write }, /* write */ 234 { &vop_lease_desc, fifo_lease_check }, /* genfs_nullop */ 235 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 236 { &vop_fcntl_desc, genfs_fcntl }, /* dummy */ 237 { &vop_poll_desc, fifo_poll }, /* poll */ 238 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 239 { &vop_revoke_desc, fifo_revoke }, /* genfs_revoke */ 240 { &vop_mmap_desc, fifo_mmap }, /* genfs_badop */ 241 { &vop_fsync_desc, puffs_fsync }, /* fsync */ 242 { &vop_seek_desc, fifo_seek }, /* genfs_badop */ 243 { &vop_remove_desc, fifo_remove }, /* genfs_badop */ 244 { &vop_link_desc, fifo_link }, /* genfs_badop */ 245 { &vop_rename_desc, fifo_rename }, /* genfs_badop */ 246 { &vop_mkdir_desc, fifo_mkdir }, /* genfs_badop */ 247 { &vop_rmdir_desc, fifo_rmdir }, /* genfs_badop */ 248 { &vop_symlink_desc, fifo_symlink }, /* genfs_badop */ 249 { &vop_readdir_desc, fifo_readdir }, /* genfs_badop */ 250 { &vop_readlink_desc, fifo_readlink }, /* genfs_badop */ 251 { &vop_abortop_desc, fifo_abortop }, /* genfs_badop */ 252 { &vop_inactive_desc, puffs_inactive }, /* inactive */ 253 { &vop_reclaim_desc, puffs_reclaim }, /* reclaim */ 254 { &vop_lock_desc, puffs_lock }, /* lock */ 255 { &vop_unlock_desc, puffs_unlock }, /* unlock */ 256 { &vop_bmap_desc, fifo_bmap }, /* dummy */ 257 { &vop_strategy_desc, fifo_strategy }, /* genfs_badop */ 258 { &vop_print_desc, puffs_print }, /* print */ 259 { &vop_islocked_desc, puffs_islocked }, /* islocked */ 260 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 261 { &vop_advlock_desc, fifo_advlock }, /* genfs_einval */ 262 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 263 { &vop_putpages_desc, fifo_putpages }, /* genfs_null_putpages*/ 264 #if 0 265 { &vop_openextattr_desc, _openextattr }, /* openextattr */ 266 { &vop_closeextattr_desc, _closeextattr }, /* closeextattr */ 267 { &vop_getextattr_desc, _getextattr }, /* getextattr */ 268 { &vop_setextattr_desc, _setextattr }, /* setextattr */ 269 { &vop_listextattr_desc, _listextattr }, /* listextattr */ 270 { &vop_deleteextattr_desc, _deleteextattr }, /* deleteextattr */ 271 #endif 272 { NULL, NULL } 273 }; 274 const struct vnodeopv_desc puffs_fifoop_opv_desc = 275 { &puffs_fifoop_p, puffs_fifoop_entries }; 276 277 278 /* "real" vnode operations */ 279 int (**puffs_msgop_p)(void *); 280 const struct vnodeopv_entry_desc puffs_msgop_entries[] = { 281 { &vop_default_desc, vn_default_error }, 282 { &vop_create_desc, puffs_create }, /* create */ 283 { &vop_mknod_desc, puffs_mknod }, /* mknod */ 284 { &vop_open_desc, puffs_open }, /* open */ 285 { &vop_close_desc, puffs_close }, /* close */ 286 { &vop_access_desc, puffs_access }, /* access */ 287 { &vop_getattr_desc, puffs_getattr }, /* getattr */ 288 { &vop_setattr_desc, puffs_setattr }, /* setattr */ 289 { &vop_read_desc, puffs_read }, /* read */ 290 { &vop_write_desc, puffs_write }, /* write */ 291 { &vop_fcntl_desc, puffs_fcntl }, /* fcntl */ 292 { &vop_ioctl_desc, puffs_ioctl }, /* ioctl */ 293 { &vop_fsync_desc, puffs_fsync }, /* fsync */ 294 { &vop_seek_desc, puffs_seek }, /* seek */ 295 { &vop_remove_desc, puffs_remove }, /* remove */ 296 { &vop_link_desc, puffs_link }, /* link */ 297 { &vop_rename_desc, puffs_rename }, /* rename */ 298 { &vop_mkdir_desc, puffs_mkdir }, /* mkdir */ 299 { &vop_rmdir_desc, puffs_rmdir }, /* rmdir */ 300 { &vop_symlink_desc, puffs_symlink }, /* symlink */ 301 { &vop_readdir_desc, puffs_readdir }, /* readdir */ 302 { &vop_readlink_desc, puffs_readlink }, /* readlink */ 303 { &vop_print_desc, puffs_print }, /* print */ 304 { &vop_islocked_desc, puffs_islocked }, /* islocked */ 305 { &vop_pathconf_desc, puffs_pathconf }, /* pathconf */ 306 { &vop_advlock_desc, puffs_advlock }, /* advlock */ 307 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 308 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 309 { NULL, NULL } 310 }; 311 const struct vnodeopv_desc puffs_msgop_opv_desc = 312 { &puffs_msgop_p, puffs_msgop_entries }; 313 314 315 #define LOCKEDVP(a) (VOP_ISLOCKED(a) ? (a) : NULL) 316 317 318 /* 319 * This is a generic vnode operation handler. It checks if the necessary 320 * operations for the called vnode operation are implemented by userspace 321 * and either returns a dummy return value or proceeds to call the real 322 * vnode operation from puffs_msgop_v. 323 * 324 * XXX: this should described elsewhere and autogenerated, the complexity 325 * of the vnode operations vectors and their interrelationships is also 326 * getting a bit out of hand. Another problem is that we need this same 327 * information in the fs server code, so keeping the two in sync manually 328 * is not a viable (long term) plan. 329 */ 330 331 /* not supported, handle locking protocol */ 332 #define CHECKOP_NOTSUPP(op) \ 333 case VOP_##op##_DESCOFFSET: \ 334 if (pmp->pmp_vnopmask[PUFFS_VN_##op] == 0) \ 335 return genfs_eopnotsupp(v); \ 336 break 337 338 /* always succeed, no locking */ 339 #define CHECKOP_SUCCESS(op) \ 340 case VOP_##op##_DESCOFFSET: \ 341 if (pmp->pmp_vnopmask[PUFFS_VN_##op] == 0) \ 342 return 0; \ 343 break 344 345 int 346 puffs_checkop(void *v) 347 { 348 struct vop_generic_args /* { 349 struct vnodeop_desc *a_desc; 350 spooky mystery contents; 351 } */ *ap = v; 352 struct vnodeop_desc *desc = ap->a_desc; 353 struct puffs_mount *pmp; 354 struct vnode *vp; 355 int offset; 356 357 DPRINTF_VERBOSE(("checkop call %s (%d)\n", 358 ap->a_desc->vdesc_name, ap->a_desc->vdesc_offset)); 359 360 offset = ap->a_desc->vdesc_vp_offsets[0]; 361 #ifdef DIAGNOSTIC 362 if (offset == VDESC_NO_OFFSET) 363 panic("puffs_checkop: no vnode, why did you call me?"); 364 #endif 365 vp = *VOPARG_OFFSETTO(struct vnode **, offset, ap); 366 pmp = MPTOPUFFSMP(vp->v_mount); 367 368 if ((pmp->pmp_flags & PUFFS_KFLAG_ALLOPS) == 0) { 369 switch (desc->vdesc_offset) { 370 CHECKOP_NOTSUPP(CREATE); 371 CHECKOP_NOTSUPP(MKNOD); 372 CHECKOP_NOTSUPP(GETATTR); 373 CHECKOP_NOTSUPP(SETATTR); 374 CHECKOP_NOTSUPP(READ); 375 CHECKOP_NOTSUPP(WRITE); 376 CHECKOP_NOTSUPP(FCNTL); 377 CHECKOP_NOTSUPP(IOCTL); 378 CHECKOP_NOTSUPP(REMOVE); 379 CHECKOP_NOTSUPP(LINK); 380 CHECKOP_NOTSUPP(RENAME); 381 CHECKOP_NOTSUPP(MKDIR); 382 CHECKOP_NOTSUPP(RMDIR); 383 CHECKOP_NOTSUPP(SYMLINK); 384 CHECKOP_NOTSUPP(READDIR); 385 CHECKOP_NOTSUPP(READLINK); 386 CHECKOP_NOTSUPP(PRINT); 387 CHECKOP_NOTSUPP(PATHCONF); 388 CHECKOP_NOTSUPP(ADVLOCK); 389 390 CHECKOP_SUCCESS(OPEN); 391 CHECKOP_SUCCESS(CLOSE); 392 CHECKOP_SUCCESS(ACCESS); 393 CHECKOP_SUCCESS(SEEK); 394 395 /* putpages & fsync doesn't make sense if there's no write */ 396 case VOP_FSYNC_DESCOFFSET: 397 if (!EXISTSOP(pmp, WRITE)) 398 return genfs_eopnotsupp(v); 399 break; 400 401 case VOP_GETPAGES_DESCOFFSET: 402 if (!EXISTSOP(pmp, READ)) 403 return genfs_eopnotsupp(v); 404 break; 405 406 case VOP_PUTPAGES_DESCOFFSET: 407 if (!EXISTSOP(pmp, WRITE)) 408 return genfs_null_putpages(v); 409 break; 410 411 default: 412 panic("puffs_checkop: unhandled vnop %d", 413 desc->vdesc_offset); 414 } 415 } 416 417 return VOCALL(puffs_msgop_p, ap->a_desc->vdesc_offset, v); 418 } 419 420 421 int 422 puffs_lookup(void *v) 423 { 424 struct vop_lookup_args /* { 425 const struct vnodeop_desc *a_desc; 426 struct vnode *a_dvp; 427 struct vnode **a_vpp; 428 struct componentname *a_cnp; 429 } */ *ap = v; 430 struct puffs_mount *pmp; 431 struct componentname *cnp; 432 struct vnode *vp, *dvp; 433 int wantpunlock, isdot; 434 int error; 435 436 PUFFS_VNREQ(lookup); 437 438 pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 439 cnp = ap->a_cnp; 440 dvp = ap->a_dvp; 441 *ap->a_vpp = NULL; 442 443 /* first things first: check access */ 444 error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, cnp->cn_lwp); 445 if (error) 446 return error; 447 448 wantpunlock = ~cnp->cn_flags & (LOCKPARENT | ISLASTCN); 449 isdot = cnp->cn_namelen == 1 && *cnp->cn_nameptr == '.'; 450 451 DPRINTF(("puffs_lookup: \"%s\", parent vnode %p, op: %lx\n", 452 cnp->cn_nameptr, dvp, cnp->cn_nameiop)); 453 454 /* 455 * Do sanity checks we can do without consulting userland. 456 */ 457 458 /* 459 * last component check & ro fs 460 * 461 * hmmm... why doesn't this check for create? 462 */ 463 if ((cnp->cn_flags & ISLASTCN) 464 && (ap->a_dvp->v_mount->mnt_flag & MNT_RDONLY) 465 && (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) { 466 DPRINTF(("puffs_lookup: write lookup for read-only fs!\n")); 467 return EROFS; 468 } 469 470 /* 471 * Check if someone fed it into the cache 472 */ 473 error = cache_lookup(dvp, ap->a_vpp, cnp); 474 if (error >= 0) 475 return error; 476 477 if (isdot) { 478 vp = ap->a_dvp; 479 vref(vp); 480 *ap->a_vpp = vp; 481 return 0; 482 } 483 484 puffs_makecn(&lookup_arg.pvnr_cn, cnp); 485 486 if (cnp->cn_flags & ISDOTDOT) 487 VOP_UNLOCK(dvp, 0); 488 489 error = puffs_vntouser(pmp, PUFFS_VN_LOOKUP, 490 &lookup_arg, sizeof(lookup_arg), VPTOPNC(dvp), LOCKEDVP(dvp), NULL); 491 DPRINTF(("puffs_lookup: return of the userspace, part %d\n", error)); 492 493 /* 494 * In case of error, leave parent locked. There is no new 495 * vnode to play with, so be happy with the NULL value given 496 * to vpp in the beginning. 497 */ 498 if (error) { 499 if (error == ENOENT) { 500 if ((cnp->cn_flags & ISLASTCN) 501 && (cnp->cn_nameiop == CREATE 502 || cnp->cn_nameiop == RENAME)) { 503 cnp->cn_flags |= SAVENAME; 504 error = EJUSTRETURN; 505 } 506 } 507 *ap->a_vpp = NULL; 508 if (cnp->cn_flags & ISDOTDOT) 509 if (vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY) != 0) 510 cnp->cn_flags |= PDIRUNLOCK; 511 return error; 512 } 513 514 vp = puffs_pnode2vnode(pmp, lookup_arg.pvnr_newnode); 515 if (!vp) { 516 error = puffs_getvnode(dvp->v_mount, 517 lookup_arg.pvnr_newnode, lookup_arg.pvnr_vtype, 518 lookup_arg.pvnr_size, lookup_arg.pvnr_rdev, &vp); 519 if (error) { 520 if (cnp->cn_flags & ISDOTDOT) 521 if (vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY) != 0) 522 cnp->cn_flags |= PDIRUNLOCK; 523 return error; 524 } 525 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 526 } 527 528 if (cnp->cn_flags & ISDOTDOT) { 529 if (cnp->cn_flags & LOCKPARENT && 530 cnp->cn_flags & ISLASTCN) { 531 if (vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY) != 0) { 532 cnp->cn_flags |= PDIRUNLOCK; 533 } 534 } 535 } else { 536 if (wantpunlock) { 537 VOP_UNLOCK(dvp, 0); 538 cnp->cn_flags |= PDIRUNLOCK; 539 } 540 } 541 542 if (cnp->cn_flags & MAKEENTRY) 543 cache_enter(dvp, vp, cnp); 544 *ap->a_vpp = vp; 545 546 return 0; 547 } 548 549 int 550 puffs_create(void *v) 551 { 552 struct vop_create_args /* { 553 const struct vnodeop_desc *a_desc; 554 struct vnode *a_dvp; 555 struct vnode **a_vpp; 556 struct componentname *a_cnp; 557 struct vattr *a_vap; 558 } */ *ap = v; 559 int error; 560 561 PUFFS_VNREQ(create); 562 563 puffs_makecn(&create_arg.pvnr_cn, ap->a_cnp); 564 create_arg.pvnr_va = *ap->a_vap; 565 566 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_CREATE, 567 &create_arg, sizeof(create_arg), VPTOPNC(ap->a_dvp), 568 ap->a_dvp, NULL); 569 if (error) 570 goto out; 571 572 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 573 create_arg.pvnr_newnode, ap->a_cnp, ap->a_vap->va_type, 0); 574 575 out: 576 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 577 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 578 vput(ap->a_dvp); 579 return error; 580 } 581 582 int 583 puffs_mknod(void *v) 584 { 585 struct vop_mknod_args /* { 586 const struct vnodeop_desc *a_desc; 587 struct vnode *a_dvp; 588 struct vnode **a_vpp; 589 struct componentname *a_cnp; 590 struct vattr *a_vap; 591 } */ *ap = v; 592 int error; 593 594 PUFFS_VNREQ(mknod); 595 596 puffs_makecn(&mknod_arg.pvnr_cn, ap->a_cnp); 597 mknod_arg.pvnr_va = *ap->a_vap; 598 599 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_MKNOD, 600 &mknod_arg, sizeof(mknod_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 601 if (error) 602 goto out; 603 604 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 605 mknod_arg.pvnr_newnode, ap->a_cnp, ap->a_vap->va_type, 606 ap->a_vap->va_rdev); 607 608 out: 609 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 610 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 611 vput(ap->a_dvp); 612 return error; 613 } 614 615 int 616 puffs_open(void *v) 617 { 618 struct vop_open_args /* { 619 const struct vnodeop_desc *a_desc; 620 struct vnode *a_vp; 621 int a_mode; 622 kauth_cred_t a_cred; 623 struct lwp *a_l; 624 } */ *ap = v; 625 626 PUFFS_VNREQ(open); 627 628 open_arg.pvnr_mode = ap->a_mode; 629 puffs_credcvt(&open_arg.pvnr_cred, ap->a_cred); 630 open_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 631 632 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_OPEN, 633 &open_arg, sizeof(open_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 634 } 635 636 int 637 puffs_close(void *v) 638 { 639 struct vop_close_args /* { 640 const struct vnodeop_desc *a_desc; 641 struct vnode *a_vp; 642 int a_fflag; 643 kauth_cred_t a_cred; 644 struct lwp *a_l; 645 } */ *ap = v; 646 647 PUFFS_VNREQ(close); 648 649 close_arg.pvnr_fflag = ap->a_fflag; 650 puffs_credcvt(&close_arg.pvnr_cred, ap->a_cred); 651 close_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 652 653 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_CLOSE, 654 &close_arg, sizeof(close_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 655 } 656 657 int 658 puffs_access(void *v) 659 { 660 struct vop_access_args /* { 661 const struct vnodeop_desc *a_desc; 662 struct vnode *a_vp; 663 int a_mode; 664 kauth_cred_t a_cred; 665 struct lwp *a_l; 666 } */ *ap = v; 667 668 PUFFS_VNREQ(access); 669 670 access_arg.pvnr_mode = ap->a_mode; 671 access_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 672 puffs_credcvt(&access_arg.pvnr_cred, ap->a_cred); 673 674 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_ACCESS, 675 &access_arg, sizeof(access_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 676 } 677 678 int 679 puffs_getattr(void *v) 680 { 681 struct vop_getattr_args /* { 682 const struct vnodeop_desc *a_desc; 683 struct vnode *a_vp; 684 struct vattr *a_vap; 685 kauth_cred_t a_cred; 686 struct lwp *a_l; 687 } */ *ap = v; 688 struct mount *mp; 689 int error; 690 691 PUFFS_VNREQ(getattr); 692 693 mp = ap->a_vp->v_mount; 694 695 vattr_null(&getattr_arg.pvnr_va); 696 puffs_credcvt(&getattr_arg.pvnr_cred, ap->a_cred); 697 getattr_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 698 699 /* 700 * XXX + XX (dos equis): this can't go through the unlock/lock 701 * cycle, since it can be called from uvn_attach(), which fiddles 702 * around with VXLOCK and therefore breaks vn_lock(). Proper 703 * fix pending. 704 */ 705 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_GETATTR, 706 &getattr_arg, sizeof(getattr_arg), VPTOPNC(ap->a_vp), 707 NULL /* XXXseeabove: should be LOCKEDVP(ap->a_vp) */, NULL); 708 if (error) 709 return error; 710 711 (void)memcpy(ap->a_vap, &getattr_arg.pvnr_va, sizeof(struct vattr)); 712 713 /* 714 * fill in information userspace does not have 715 * XXX: but would it be better to do fsid at the generic level? 716 */ 717 ap->a_vap->va_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 718 719 return 0; 720 } 721 722 int 723 puffs_setattr(void *v) 724 { 725 struct vop_getattr_args /* { 726 const struct vnodeop_desc *a_desc; 727 struct vnode *a_vp; 728 struct vattr *a_vap; 729 kauth_cred_t a_cred; 730 struct lwp *a_l; 731 } */ *ap = v; 732 int error; 733 734 PUFFS_VNREQ(setattr); 735 736 (void)memcpy(&setattr_arg.pvnr_va, ap->a_vap, sizeof(struct vattr)); 737 puffs_credcvt(&setattr_arg.pvnr_cred, ap->a_cred); 738 setattr_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 739 740 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_SETATTR, 741 &setattr_arg, sizeof(setattr_arg), VPTOPNC(ap->a_vp), 742 ap->a_vp, NULL); 743 if (error) 744 return error; 745 746 if (ap->a_vap->va_size != VNOVAL) 747 uvm_vnp_setsize(ap->a_vp, ap->a_vap->va_size); 748 749 return 0; 750 } 751 752 int 753 puffs_revoke(void *v) 754 { 755 struct vop_revoke_args /* { 756 const struct vnodeop_desc *a_desc; 757 struct vnode *a_vp; 758 int a_flags; 759 } */ *ap = v; 760 struct puffs_mount *pmp; 761 762 PUFFS_VNREQ(revoke); 763 764 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 765 766 revoke_arg.pvnr_flags = ap->a_flags; 767 768 /* don't really care if userspace doesn't want to play along */ 769 if (EXISTSOP(pmp, REVOKE)) 770 puffs_vntouser(pmp, PUFFS_VN_REVOKE, 771 &revoke_arg, sizeof(revoke_arg), VPTOPNC(ap->a_vp), 772 NULL, NULL); 773 774 return genfs_revoke(v); 775 } 776 777 /* 778 * There is no technical need to have this travel to userspace 779 * synchronously. So once async reply support is in place, make this 780 * async. 781 */ 782 int 783 puffs_inactive(void *v) 784 { 785 struct vop_inactive_args /* { 786 const struct vnodeop_desc *a_desc; 787 struct vnode *a_vp; 788 struct lwp *a_l; 789 } */ *ap = v; 790 struct puffs_mount *pmp; 791 struct puffs_node *pnode; 792 int rv, vnrefs; 793 794 PUFFS_VNREQ(inactive); 795 796 /* 797 * XXX: think about this after we really start unlocking 798 * when going to userspace 799 */ 800 pnode = ap->a_vp->v_data; 801 pnode->pn_stat |= PNODE_INACTIVE; 802 803 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 804 805 inactive_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 806 807 if (EXISTSOP(pmp, INACTIVE)) 808 rv = puffs_vntouser(pmp, PUFFS_VN_INACTIVE, 809 &inactive_arg, sizeof(inactive_arg), VPTOPNC(ap->a_vp), 810 ap->a_vp, NULL); 811 else 812 rv = 1; /* see below */ 813 814 /* can't trust userspace return value? simulate safe answer */ 815 if (rv) 816 vnrefs = 1; 817 else 818 vnrefs = inactive_arg.pvnr_backendrefs; 819 820 VOP_UNLOCK(ap->a_vp, 0); 821 822 /* 823 * user server thinks it's gone? then don't be afraid care, 824 * node's life was already all it would ever be 825 */ 826 if (vnrefs == 0) 827 vrecycle(ap->a_vp, NULL, ap->a_l); 828 829 return 0; 830 } 831 832 int 833 puffs_reclaim(void *v) 834 { 835 struct vop_reclaim_args /* { 836 const struct vnodeop_desc *a_desc; 837 struct vnode *a_vp; 838 struct lwp *a_l; 839 } */ *ap = v; 840 struct puffs_mount *pmp; 841 int error; 842 843 PUFFS_VNREQ(reclaim); 844 845 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 846 847 /* 848 * first things first: check if someone is trying to reclaim the 849 * root vnode. do not allow that to travel to userspace. 850 * Note that we don't need to take the lock similarly to 851 * puffs_root(), since there is only one of us. 852 */ 853 if (ap->a_vp->v_flag & VROOT) { 854 #ifdef DIAGNOSTIC 855 simple_lock(&pmp->pmp_lock); 856 if (pmp->pmp_root == NULL) 857 panic("puffs_reclaim: releasing root vnode (%p) twice", 858 ap->a_vp); 859 simple_unlock(&pmp->pmp_lock); 860 #endif 861 pmp->pmp_root = NULL; 862 puffs_putvnode(ap->a_vp); 863 return 0; 864 } 865 866 reclaim_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 867 868 if (EXISTSOP(pmp, RECLAIM)) 869 error = puffs_vntouser(pmp, PUFFS_VN_RECLAIM, 870 &reclaim_arg, sizeof(reclaim_arg), VPTOPNC(ap->a_vp), 871 NULL, NULL); 872 else 873 error = 0; 874 #if 0 875 /* 876 * XXX: if reclaim fails for any other reason than the userspace 877 * being dead, we should consider unmounting the filesystem, since 878 * we can't trust it to be in a consistent state anymore. But for 879 * now, just ignore all errors. 880 */ 881 if (error) 882 return error; 883 #endif 884 885 puffs_putvnode(ap->a_vp); 886 887 return 0; 888 } 889 890 int 891 puffs_readdir(void *v) 892 { 893 struct vop_readdir_args /* { 894 const struct vnodeop_desc *a_desc; 895 struct vnode *a_vp; 896 struct uio *a_uio; 897 kauth_cred_t a_cred; 898 int *a_eofflag; 899 off_t **a_cookies; 900 int *a_ncookies; 901 } */ *ap = v; 902 struct puffs_vnreq_readdir *readdir_argp; 903 size_t argsize; 904 struct uio *uio = ap->a_uio; 905 size_t howmuch; 906 int error; 907 908 /* worry about these later */ 909 if (!(ap->a_cookies == NULL && ap->a_ncookies == NULL)) 910 return EOPNOTSUPP; 911 912 argsize = sizeof(struct puffs_vnreq_readdir); 913 readdir_argp = malloc(argsize, M_PUFFS, M_ZERO | M_WAITOK); 914 915 puffs_credcvt(&readdir_argp->pvnr_cred, ap->a_cred); 916 readdir_argp->pvnr_offset = uio->uio_offset; 917 readdir_argp->pvnr_resid = uio->uio_resid; 918 919 error = puffs_vntouser_adjbuf(MPTOPUFFSMP(ap->a_vp->v_mount), 920 PUFFS_VN_READDIR, (void **)&readdir_argp, &argsize, 921 sizeof(struct puffs_vnreq_readdir), 922 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 923 if (error) 924 goto out; 925 926 /* userspace is cheating? */ 927 if (readdir_argp->pvnr_resid > uio->uio_resid) { 928 error = EINVAL; 929 goto out; 930 } 931 932 /* bouncy-wouncy with the directory data */ 933 howmuch = uio->uio_resid - readdir_argp->pvnr_resid; 934 error = uiomove(readdir_argp->pvnr_dent, howmuch, uio); 935 if (error) 936 goto out; 937 uio->uio_offset = readdir_argp->pvnr_offset; 938 939 out: 940 free(readdir_argp, M_PUFFS); 941 return error; 942 } 943 944 int 945 puffs_poll(void *v) 946 { 947 struct vop_poll_args /* { 948 const struct vnodeop_desc *a_desc; 949 struct vnode *a_vp; 950 int a_events; 951 struct lwp *a_l; 952 }*/ *ap = v; 953 954 PUFFS_VNREQ(poll); 955 956 poll_arg.pvnr_events = ap->a_events; 957 poll_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 958 959 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_POLL, 960 &poll_arg, sizeof(poll_arg), VPTOPNC(ap->a_vp), NULL, NULL); 961 } 962 963 int 964 puffs_fsync(void *v) 965 { 966 struct vop_fsync_args /* { 967 const struct vnodeop_desc *a_desc; 968 struct vnode *a_vp; 969 kauth_cred_t a_cred; 970 int a_flags; 971 off_t a_offlo; 972 off_t a_offhi; 973 struct lwp *a_l; 974 } */ *ap = v; 975 struct puffs_vnreq_fsync *fsync_argp; 976 struct vnode *vp; 977 int pflags, error; 978 979 PUFFS_VNREQ(fsync); 980 981 vp = ap->a_vp; 982 983 pflags = PGO_CLEANIT; 984 if (ap->a_flags & FSYNC_WAIT) { 985 pflags |= PGO_SYNCIO; 986 fsync_argp = &fsync_arg; 987 } else { 988 fsync_argp = malloc(sizeof(struct puffs_vnreq_fsync), 989 M_PUFFS, M_ZERO | M_NOWAIT); 990 if (fsync_argp == NULL) 991 return ENOMEM; 992 } 993 994 /* 995 * flush pages to avoid being overly dirty 996 */ 997 simple_lock(&vp->v_interlock); 998 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 999 round_page(ap->a_offhi), pflags); 1000 if (error) 1001 return error; 1002 1003 puffs_credcvt(&fsync_argp->pvnr_cred, ap->a_cred); 1004 fsync_argp->pvnr_flags = ap->a_flags; 1005 fsync_argp->pvnr_offlo = ap->a_offlo; 1006 fsync_argp->pvnr_offhi = ap->a_offhi; 1007 fsync_argp->pvnr_pid = puffs_lwp2pid(ap->a_l); 1008 1009 /* 1010 * XXX: see comment at puffs_getattr about locking 1011 * 1012 * If we are not required to wait, do a FAF operation. 1013 * Otherwise block here. 1014 */ 1015 if (ap->a_flags & FSYNC_WAIT) { 1016 error = puffs_vntouser(MPTOPUFFSMP(vp->v_mount), 1017 PUFFS_VN_FSYNC, fsync_argp, sizeof(*fsync_argp), 1018 VPTOPNC(vp), NULL /* XXXshouldbe: vp */, NULL); 1019 } else { 1020 /* FAF is always "succesful" */ 1021 error = 0; 1022 puffs_vntouser_faf(MPTOPUFFSMP(vp->v_mount), 1023 PUFFS_VN_FSYNC, fsync_argp, sizeof(*fsync_argp), 1024 VPTOPNC(vp)); 1025 } 1026 1027 return error; 1028 } 1029 1030 int 1031 puffs_seek(void *v) 1032 { 1033 struct vop_seek_args /* { 1034 const struct vnodeop_desc *a_desc; 1035 struct vnode *a_vp; 1036 off_t a_oldoff; 1037 off_t a_newoff; 1038 kauth_cred_t a_cred; 1039 } */ *ap = v; 1040 1041 PUFFS_VNREQ(seek); 1042 1043 seek_arg.pvnr_oldoff = ap->a_oldoff; 1044 seek_arg.pvnr_newoff = ap->a_newoff; 1045 puffs_credcvt(&seek_arg.pvnr_cred, ap->a_cred); 1046 1047 /* 1048 * XXX: seems like seek is called with an unlocked vp, but 1049 * it can't hurt to play safe 1050 */ 1051 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_SEEK, 1052 &seek_arg, sizeof(seek_arg), VPTOPNC(ap->a_vp), 1053 LOCKEDVP(ap->a_vp), NULL); 1054 } 1055 1056 int 1057 puffs_remove(void *v) 1058 { 1059 struct vop_remove_args /* { 1060 const struct vnodeop_desc *a_desc; 1061 struct vnode *a_dvp; 1062 struct vnode *a_vp; 1063 struct componentname *a_cnp; 1064 } */ *ap = v; 1065 int error; 1066 1067 PUFFS_VNREQ(remove); 1068 1069 remove_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1070 puffs_makecn(&remove_arg.pvnr_cn, ap->a_cnp); 1071 1072 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_REMOVE, 1073 &remove_arg, sizeof(remove_arg), VPTOPNC(ap->a_dvp), 1074 ap->a_dvp, ap->a_vp); 1075 1076 vput(ap->a_vp); 1077 vput(ap->a_dvp); 1078 1079 return error; 1080 } 1081 1082 int 1083 puffs_mkdir(void *v) 1084 { 1085 struct vop_mkdir_args /* { 1086 const struct vnodeop_desc *a_desc; 1087 struct vnode *a_dvp; 1088 struct vnode **a_vpp; 1089 struct componentname *a_cnp; 1090 struct vattr *a_vap; 1091 } */ *ap = v; 1092 int error; 1093 1094 PUFFS_VNREQ(mkdir); 1095 1096 puffs_makecn(&mkdir_arg.pvnr_cn, ap->a_cnp); 1097 mkdir_arg.pvnr_va = *ap->a_vap; 1098 1099 /* XXX: wouldn't need to relock dvp, but that's life */ 1100 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_MKDIR, 1101 &mkdir_arg, sizeof(mkdir_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1102 if (error) 1103 goto out; 1104 1105 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 1106 mkdir_arg.pvnr_newnode, ap->a_cnp, VDIR, 0); 1107 1108 out: 1109 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 1110 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 1111 vput(ap->a_dvp); 1112 return error; 1113 } 1114 1115 int 1116 puffs_rmdir(void *v) 1117 { 1118 struct vop_rmdir_args /* { 1119 const struct vnodeop_desc *a_desc; 1120 struct vnode *a_dvp; 1121 struct vnode *a_vp; 1122 struct componentname *a_cnp; 1123 } */ *ap = v; 1124 int error; 1125 1126 PUFFS_VNREQ(rmdir); 1127 1128 rmdir_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1129 puffs_makecn(&rmdir_arg.pvnr_cn, ap->a_cnp); 1130 1131 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_RMDIR, 1132 &rmdir_arg, sizeof(rmdir_arg), VPTOPNC(ap->a_dvp), 1133 ap->a_dvp, ap->a_vp); 1134 1135 vput(ap->a_dvp); 1136 vput(ap->a_vp); 1137 1138 return error; 1139 } 1140 1141 int 1142 puffs_link(void *v) 1143 { 1144 struct vop_link_args /* { 1145 const struct vnodeop_desc *a_desc; 1146 struct vnode *a_dvp; 1147 struct vnode *a_vp; 1148 struct componentname *a_cnp; 1149 }*/ *ap = v; 1150 int error; 1151 1152 PUFFS_VNREQ(link); 1153 1154 link_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1155 puffs_makecn(&link_arg.pvnr_cn, ap->a_cnp); 1156 1157 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_LINK, 1158 &link_arg, sizeof(link_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1159 1160 vput(ap->a_dvp); 1161 1162 return error; 1163 } 1164 1165 int 1166 puffs_symlink(void *v) 1167 { 1168 struct vop_symlink_args /* { 1169 const struct vnodeop_desc *a_desc; 1170 struct vnode *a_dvp; 1171 struct vnode **a_vpp; 1172 struct componentname *a_cnp; 1173 struct vattr *a_vap; 1174 char *a_target; 1175 }*/ *ap = v; 1176 int error; 1177 1178 PUFFS_VNREQ(symlink); /* XXX: large structure */ 1179 1180 *ap->a_vpp = NULL; 1181 1182 puffs_makecn(&symlink_arg.pvnr_cn, ap->a_cnp); 1183 symlink_arg.pvnr_va = *ap->a_vap; 1184 (void)strlcpy(symlink_arg.pvnr_link, ap->a_target, 1185 sizeof(symlink_arg.pvnr_link)); 1186 1187 /* XXX: don't need to relock parent */ 1188 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), 1189 PUFFS_VN_SYMLINK, &symlink_arg, sizeof(symlink_arg), 1190 VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1191 if (error) 1192 goto out; 1193 1194 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 1195 symlink_arg.pvnr_newnode, ap->a_cnp, VLNK, 0); 1196 1197 out: 1198 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 1199 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 1200 vput(ap->a_dvp); 1201 return error; 1202 } 1203 1204 int 1205 puffs_readlink(void *v) 1206 { 1207 struct vop_readlink_args /* { 1208 const struct vnodeop_desc *a_desc; 1209 struct vnode *a_vp; 1210 struct uio *a_uio; 1211 kauth_cred_t a_cred; 1212 } */ *ap = v; 1213 int error; 1214 1215 PUFFS_VNREQ(readlink); 1216 1217 puffs_credcvt(&readlink_arg.pvnr_cred, ap->a_cred); 1218 readlink_arg.pvnr_linklen = sizeof(readlink_arg.pvnr_link); 1219 1220 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1221 PUFFS_VN_READLINK, &readlink_arg, sizeof(readlink_arg), 1222 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1223 if (error) 1224 return error; 1225 1226 readlink_arg.pvnr_link[readlink_arg.pvnr_linklen] = '\0'; 1227 return uiomove(&readlink_arg.pvnr_link, readlink_arg.pvnr_linklen, 1228 ap->a_uio); 1229 } 1230 1231 /* XXXXXXX: think about locking & userspace op delocking... */ 1232 int 1233 puffs_rename(void *v) 1234 { 1235 struct vop_rename_args /* { 1236 const struct vnodeop_desc *a_desc; 1237 struct vnode *a_fdvp; 1238 struct vnode *a_fvp; 1239 struct componentname *a_fcnp; 1240 struct vnode *a_tdvp; 1241 struct vnode *a_tvp; 1242 struct componentname *a_tcnp; 1243 }*/ *ap = v; 1244 int error; 1245 1246 PUFFS_VNREQ(rename); 1247 1248 /* 1249 * participate in the duck hunt 1250 * (I could do with some canard a la presse, so hopefully 1251 * this is succesful) 1252 */ 1253 KASSERT(ap->a_tdvp != ap->a_tvp); 1254 1255 if (ap->a_fvp->v_mount != ap->a_tdvp->v_mount) { 1256 error = EXDEV; 1257 goto out; 1258 } 1259 1260 rename_arg.pvnr_cookie_src = VPTOPNC(ap->a_fvp); 1261 rename_arg.pvnr_cookie_targdir = VPTOPNC(ap->a_tdvp); 1262 if (ap->a_tvp) 1263 rename_arg.pvnr_cookie_targ = VPTOPNC(ap->a_tvp); 1264 else 1265 rename_arg.pvnr_cookie_targ = NULL; 1266 puffs_makecn(&rename_arg.pvnr_cn_src, ap->a_fcnp); 1267 puffs_makecn(&rename_arg.pvnr_cn_targ, ap->a_tcnp); 1268 1269 error = puffs_vntouser(MPTOPUFFSMP(ap->a_fdvp->v_mount), 1270 PUFFS_VN_RENAME, &rename_arg, sizeof(rename_arg), 1271 VPTOPNC(ap->a_fdvp), NULL, NULL); 1272 1273 out: 1274 vput(ap->a_tdvp); 1275 if (ap->a_tvp != NULL) 1276 vput(ap->a_tvp); 1277 1278 vrele(ap->a_fdvp); 1279 vrele(ap->a_fvp); 1280 1281 return error; 1282 } 1283 1284 int 1285 puffs_read(void *v) 1286 { 1287 struct vop_read_args /* { 1288 const struct vnodeop_desc *a_desc; 1289 struct vnode *a_vp; 1290 struct uio *a_uio; 1291 int a_ioflag; 1292 kauth_cred_t a_cred; 1293 } */ *ap = v; 1294 struct puffs_vnreq_read *read_argp; 1295 struct puffs_mount *pmp; 1296 struct vnode *vp; 1297 struct uio *uio; 1298 void *win; 1299 size_t tomove, argsize; 1300 vsize_t bytelen; 1301 int error, ubcflags; 1302 1303 uio = ap->a_uio; 1304 vp = ap->a_vp; 1305 read_argp = NULL; 1306 error = 0; 1307 pmp = MPTOPUFFSMP(vp->v_mount); 1308 1309 /* std sanity */ 1310 if (uio->uio_resid == 0) 1311 return 0; 1312 if (uio->uio_offset < 0) 1313 return EINVAL; 1314 1315 if (vp->v_type == VREG && (pmp->pmp_flags & PUFFS_KFLAG_NOCACHE) == 0) { 1316 const int advice = IO_ADV_DECODE(ap->a_ioflag); 1317 1318 ubcflags = 0; 1319 if (UBC_WANT_UNMAP(vp)) 1320 ubcflags = UBC_UNMAP; 1321 1322 while (uio->uio_resid > 0) { 1323 bytelen = MIN(uio->uio_resid, 1324 vp->v_size - uio->uio_offset); 1325 if (bytelen == 0) 1326 break; 1327 1328 win = ubc_alloc(&vp->v_uobj, uio->uio_offset, 1329 &bytelen, advice, UBC_READ); 1330 error = uiomove(win, bytelen, uio); 1331 ubc_release(win, ubcflags); 1332 if (error) 1333 break; 1334 } 1335 1336 if ((vp->v_mount->mnt_flag & MNT_NOATIME) == 0) 1337 puffs_updatenode(vp, PUFFS_UPDATEATIME); 1338 } else { 1339 /* 1340 * in case it's not a regular file or we're operating 1341 * uncached, do read in the old-fashioned style, 1342 * i.e. explicit read operations 1343 */ 1344 1345 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1346 argsize = sizeof(struct puffs_vnreq_read); 1347 read_argp = malloc(argsize, M_PUFFS, M_WAITOK | M_ZERO); 1348 1349 error = 0; 1350 while (uio->uio_resid > 0) { 1351 read_argp->pvnr_ioflag = ap->a_ioflag; 1352 read_argp->pvnr_resid = tomove; 1353 read_argp->pvnr_offset = uio->uio_offset; 1354 puffs_credcvt(&read_argp->pvnr_cred, ap->a_cred); 1355 1356 argsize = sizeof(struct puffs_vnreq_read); 1357 error = puffs_vntouser_adjbuf(pmp, PUFFS_VN_READ, 1358 (void **)&read_argp, &argsize, 1359 sizeof(struct puffs_vnreq_read), VPTOPNC(ap->a_vp), 1360 ap->a_vp, NULL); 1361 if (error) 1362 break; 1363 1364 if (read_argp->pvnr_resid > tomove) { 1365 error = EINVAL; 1366 break; 1367 } 1368 1369 error = uiomove(read_argp->pvnr_data, 1370 tomove - read_argp->pvnr_resid, uio); 1371 1372 /* 1373 * in case the file is out of juice, resid from 1374 * userspace is != 0. and the error-case is 1375 * quite obvious 1376 */ 1377 if (error || read_argp->pvnr_resid) 1378 break; 1379 1380 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1381 } 1382 } 1383 1384 if (read_argp) 1385 free(read_argp, M_PUFFS); 1386 return error; 1387 } 1388 1389 int 1390 puffs_write(void *v) 1391 { 1392 struct vop_write_args /* { 1393 const struct vnodeop_desc *a_desc; 1394 struct vnode *a_vp; 1395 struct uio *a_uio; 1396 int a_ioflag; 1397 kauth_cred_t a_cred; 1398 }*/ *ap = v; 1399 struct puffs_vnreq_write *write_argp; 1400 struct puffs_mount *pmp; 1401 struct uio *uio; 1402 struct vnode *vp; 1403 void *win; 1404 size_t tomove, argsize; 1405 off_t oldoff, newoff, origoff; 1406 vsize_t bytelen; 1407 int error, uflags; 1408 int async, ubcflags; 1409 1410 vp = ap->a_vp; 1411 uio = ap->a_uio; 1412 async = vp->v_mount->mnt_flag & MNT_ASYNC; 1413 error = uflags = 0; 1414 write_argp = NULL; 1415 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1416 1417 if (vp->v_type == VREG && (pmp->pmp_flags & PUFFS_KFLAG_NOCACHE) == 0) { 1418 ubcflags = 0; 1419 if (UBC_WANT_UNMAP(vp)) 1420 ubcflags = UBC_UNMAP; 1421 1422 /* 1423 * userspace *should* be allowed to control this, 1424 * but with UBC it's a bit unclear how to handle it 1425 */ 1426 if (ap->a_ioflag & IO_APPEND) 1427 uio->uio_offset = vp->v_size; 1428 1429 origoff = uio->uio_offset; 1430 while (uio->uio_resid > 0) { 1431 uflags |= PUFFS_UPDATECTIME; 1432 uflags |= PUFFS_UPDATEMTIME; 1433 oldoff = uio->uio_offset; 1434 bytelen = uio->uio_resid; 1435 1436 win = ubc_alloc(&vp->v_uobj, oldoff, &bytelen, 1437 UVM_ADV_NORMAL, UBC_WRITE); 1438 error = uiomove(win, bytelen, uio); 1439 1440 /* 1441 * did we grow the file? 1442 * XXX: should probably ask userspace to extend 1443 * it's idea of the *first* before growing it 1444 * here. Or we need some mechanism to "rollback" 1445 * in case putpages fails. 1446 */ 1447 newoff = oldoff + bytelen; 1448 if (vp->v_size < newoff) { 1449 uflags |= PUFFS_UPDATESIZE; 1450 uvm_vnp_setsize(vp, newoff); 1451 1452 /* 1453 * in case we couldn't copy data to the 1454 * window, zero it out so that we don't 1455 * have any random leftovers in there. 1456 */ 1457 if (error) 1458 memset(win, 0, bytelen); 1459 } 1460 1461 ubc_release(win, ubcflags); 1462 if (error) 1463 break; 1464 1465 /* ok, I really need to admit: why's this? */ 1466 if (!async && oldoff >> 16 != uio->uio_offset >> 16) { 1467 simple_lock(&vp->v_interlock); 1468 error = VOP_PUTPAGES(vp, oldoff & ~0xffff, 1469 uio->uio_offset & ~0xffff, PGO_CLEANIT); 1470 if (error) 1471 break; 1472 } 1473 } 1474 1475 if (error == 0 && ap->a_ioflag & IO_SYNC) { 1476 simple_lock(&vp->v_interlock); 1477 error = VOP_PUTPAGES(vp, trunc_page(origoff), 1478 round_page(uio->uio_offset), 1479 PGO_CLEANIT | PGO_SYNCIO); 1480 } 1481 1482 puffs_updatenode(vp, uflags); 1483 } else { 1484 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1485 argsize = sizeof(struct puffs_vnreq_write) + tomove; 1486 write_argp = malloc(argsize, M_PUFFS, M_WAITOK | M_ZERO); 1487 1488 while (uio->uio_resid > 0) { 1489 write_argp->pvnr_ioflag = ap->a_ioflag; 1490 write_argp->pvnr_resid = tomove; 1491 write_argp->pvnr_offset = uio->uio_offset; 1492 puffs_credcvt(&write_argp->pvnr_cred, ap->a_cred); 1493 error = uiomove(write_argp->pvnr_data, tomove, uio); 1494 if (error) 1495 break; 1496 1497 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1498 PUFFS_VN_WRITE, write_argp, argsize, 1499 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1500 if (error) { 1501 /* restore uiomove */ 1502 uio->uio_resid += tomove; 1503 uio->uio_offset -= tomove; 1504 break; 1505 } 1506 if (write_argp->pvnr_resid > tomove) { 1507 /* 1508 * XXX: correct file size is a mystery, 1509 * we can only guess 1510 */ 1511 error = EINVAL; 1512 break; 1513 } 1514 1515 /* adjust file size */ 1516 uvm_vnp_setsize(vp, uio->uio_offset); 1517 1518 /* didn't move everything? bad userspace. bail */ 1519 if (write_argp->pvnr_resid != 0) { 1520 uio->uio_resid += write_argp->pvnr_resid; 1521 uio->uio_offset -= write_argp->pvnr_resid; 1522 error = EIO; 1523 break; 1524 } 1525 1526 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1527 } 1528 } 1529 1530 if (write_argp) 1531 free(write_argp, M_PUFFS); 1532 return error; 1533 } 1534 1535 static int puffs_fcnioctl(struct vop_ioctl_args * /*XXX*/, int); 1536 1537 #define FCNIOCTL_ARG_MAX 1<<16 1538 int 1539 puffs_fcnioctl(struct vop_ioctl_args *ap, int puffsop) 1540 { 1541 /* struct vop_ioctl_args { 1542 const struct vnodeop_desc *a_desc; 1543 struct vnode *a_vp; 1544 u_long a_command; 1545 void *a_data; 1546 int a_fflag; 1547 kauth_cred_t a_cred; 1548 struct lwp *a_l; 1549 }*ap = v; */ 1550 struct puffs_mount *pmp; 1551 struct puffs_sizepark pspark; 1552 void *kernbuf; 1553 size_t copylen; 1554 int error; 1555 1556 PUFFS_VNREQ(fcnioctl); 1557 1558 /* 1559 * Since this op gives the filesystem (almost) complete control on 1560 * how much it is allowed to copy from the calling process 1561 * address space, do not enable it by default, since it would 1562 * be a whopping security hole. 1563 */ 1564 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1565 if ((pmp->pmp_flags & PUFFS_KFLAG_ALLOWCTL) == 0) 1566 return EINVAL; /* only shoe that fits */ 1567 1568 /* fill in sizereq and store it */ 1569 pspark.pkso_reqid = puffs_getreqid(pmp); 1570 pspark.pkso_reqtype = PUFFS_SIZEOPREQ_BUF_IN; 1571 pspark.pkso_copybuf = ap->a_data; 1572 pspark.pkso_bufsize = FCNIOCTL_ARG_MAX; 1573 TAILQ_INSERT_TAIL(&pmp->pmp_req_sizepark, &pspark, pkso_entries); 1574 1575 /* then fill in actual request and shoot it off */ 1576 fcnioctl_arg.pvnr_command = ap->a_command; 1577 fcnioctl_arg.pvnr_fflag = ap->a_fflag; 1578 puffs_credcvt(&fcnioctl_arg.pvnr_cred, ap->a_cred); 1579 fcnioctl_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 1580 1581 error = puffs_vntouser_req(MPTOPUFFSMP(ap->a_vp->v_mount), puffsop, 1582 &fcnioctl_arg, sizeof(fcnioctl_arg), VPTOPNC(ap->a_vp), 1583 pspark.pkso_reqid, NULL, NULL); 1584 1585 /* if we don't need to copy data, we're done */ 1586 if (error || !fcnioctl_arg.pvnr_copyback) 1587 return error; 1588 1589 copylen = MIN(FCNIOCTL_ARG_MAX, fcnioctl_arg.pvnr_datalen); 1590 kernbuf = malloc(copylen, M_PUFFS, M_WAITOK); 1591 error = copyin(fcnioctl_arg.pvnr_data, kernbuf, copylen); 1592 if (error) 1593 goto out; 1594 error = copyout(kernbuf, ap->a_data, copylen); 1595 1596 out: 1597 free(kernbuf, M_PUFFS); 1598 return error; 1599 } 1600 1601 int 1602 puffs_ioctl(void *v) 1603 { 1604 1605 return puffs_fcnioctl(v, PUFFS_VN_IOCTL); 1606 } 1607 1608 int 1609 puffs_fcntl(void *v) 1610 { 1611 1612 return puffs_fcnioctl(v, PUFFS_VN_FCNTL); 1613 } 1614 1615 int 1616 puffs_print(void *v) 1617 { 1618 struct vop_print_args /* { 1619 struct vnode *a_vp; 1620 } */ *ap = v; 1621 struct puffs_mount *pmp; 1622 struct vnode *vp = ap->a_vp; 1623 struct puffs_node *pn = vp->v_data; 1624 1625 PUFFS_VNREQ(print); 1626 1627 pmp = MPTOPUFFSMP(vp->v_mount); 1628 1629 /* kernel portion */ 1630 printf("tag VT_PUFFS, vnode %p, puffs node: %p,\n" 1631 " userspace cookie: %p\n", vp, pn, pn->pn_cookie); 1632 if (vp->v_type == VFIFO) 1633 fifo_printinfo(vp); 1634 lockmgr_printinfo(&vp->v_lock); 1635 1636 /* userspace portion */ 1637 if (EXISTSOP(pmp, PRINT)) 1638 puffs_vntouser(pmp, PUFFS_VN_PRINT, 1639 &print_arg, sizeof(print_arg), VPTOPNC(ap->a_vp), 1640 LOCKEDVP(ap->a_vp), NULL); 1641 1642 return 0; 1643 } 1644 1645 int 1646 puffs_pathconf(void *v) 1647 { 1648 struct vop_pathconf_args /* { 1649 const struct vnodeop_desc *a_desc; 1650 struct vnode *a_vp; 1651 int a_name; 1652 register_t *a_retval; 1653 } */ *ap = v; 1654 int error; 1655 1656 PUFFS_VNREQ(pathconf); 1657 1658 pathconf_arg.pvnr_name = ap->a_name; 1659 1660 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1661 PUFFS_VN_PATHCONF, &pathconf_arg, sizeof(pathconf_arg), 1662 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1663 if (error) 1664 return error; 1665 1666 *ap->a_retval = pathconf_arg.pvnr_retval; 1667 1668 return 0; 1669 } 1670 1671 int 1672 puffs_advlock(void *v) 1673 { 1674 struct vop_advlock_args /* { 1675 const struct vnodeop_desc *a_desc; 1676 struct vnode *a_vp; 1677 void *a_id; 1678 int a_op; 1679 struct flock *a_fl; 1680 int a_flags; 1681 } */ *ap = v; 1682 int error; 1683 1684 PUFFS_VNREQ(advlock); 1685 1686 error = copyin(ap->a_fl, &advlock_arg.pvnr_fl, sizeof(struct flock)); 1687 if (error) 1688 return error; 1689 advlock_arg.pvnr_id = ap->a_id; 1690 advlock_arg.pvnr_op = ap->a_op; 1691 advlock_arg.pvnr_flags = ap->a_flags; 1692 1693 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_ADVLOCK, 1694 &advlock_arg, sizeof(advlock_arg), VPTOPNC(ap->a_vp), NULL, NULL); 1695 } 1696 /* 1697 * This maps itself to PUFFS_VN_READ/WRITE for data transfer. 1698 */ 1699 int 1700 puffs_strategy(void *v) 1701 { 1702 struct vop_strategy_args /* { 1703 const struct vnodeop_desc *a_desc; 1704 struct vnode *a_vp; 1705 struct buf *a_bp; 1706 } */ *ap = v; 1707 struct puffs_mount *pmp; 1708 struct puffs_vnreq_read *read_argp = NULL; 1709 struct puffs_vnreq_write *write_argp = NULL; 1710 struct buf *bp; 1711 size_t argsize; 1712 size_t tomove, moved; 1713 int error; 1714 1715 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1716 bp = ap->a_bp; 1717 1718 if ((bp->b_flags & B_READ) && !EXISTSOP(pmp, READ)) 1719 return EOPNOTSUPP; 1720 if ((bp->b_flags & B_WRITE) && !EXISTSOP(pmp, WRITE)) 1721 return EOPNOTSUPP; 1722 1723 #ifdef DIAGNOSTIC 1724 if (bp->b_resid > pmp->pmp_req_maxsize - PUFFS_REQSTRUCT_MAX) 1725 panic("puffs_strategy: wildly inappropriate buf resid %d", 1726 bp->b_resid); 1727 #endif 1728 1729 if (bp->b_flags & B_READ) { 1730 argsize = sizeof(struct puffs_vnreq_read); 1731 read_argp = malloc(argsize, M_PUFFS, M_NOWAIT | M_ZERO); 1732 if (read_argp == NULL) { 1733 error = ENOMEM; 1734 goto out; 1735 } 1736 1737 tomove = PUFFS_TOMOVE(bp->b_resid, pmp); 1738 1739 read_argp->pvnr_ioflag = 0; 1740 read_argp->pvnr_resid = tomove; 1741 read_argp->pvnr_offset = bp->b_blkno << DEV_BSHIFT; 1742 puffs_credcvt(&read_argp->pvnr_cred, FSCRED); 1743 1744 error = puffs_vntouser_adjbuf(pmp, PUFFS_VN_READ, 1745 (void **)&read_argp, &argsize, argsize, 1746 VPTOPNC(ap->a_vp), LOCKEDVP(ap->a_vp), NULL); 1747 1748 if (error) 1749 goto out; 1750 1751 if (read_argp->pvnr_resid > tomove) { 1752 error = EINVAL; 1753 goto out; 1754 } 1755 1756 moved = tomove - read_argp->pvnr_resid; 1757 1758 (void)memcpy(bp->b_data, read_argp->pvnr_data, moved); 1759 bp->b_resid -= moved; 1760 } else { 1761 argsize = sizeof(struct puffs_vnreq_write) + bp->b_bcount; 1762 write_argp = malloc(argsize, M_PUFFS, M_NOWAIT | M_ZERO); 1763 if (write_argp == NULL) { 1764 error = ENOMEM; 1765 goto out; 1766 } 1767 1768 tomove = PUFFS_TOMOVE(bp->b_resid, pmp); 1769 1770 write_argp->pvnr_ioflag = 0; 1771 write_argp->pvnr_resid = tomove; 1772 write_argp->pvnr_offset = bp->b_blkno << DEV_BSHIFT; 1773 puffs_credcvt(&write_argp->pvnr_cred, FSCRED); 1774 1775 (void)memcpy(&write_argp->pvnr_data, bp->b_data, tomove); 1776 1777 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1778 PUFFS_VN_WRITE, write_argp, argsize, 1779 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1780 if (error) 1781 goto out; 1782 1783 moved = write_argp->pvnr_resid - tomove; 1784 1785 if (write_argp->pvnr_resid > tomove) { 1786 error = EINVAL; 1787 goto out; 1788 } 1789 1790 bp->b_resid -= moved; 1791 if (write_argp->pvnr_resid != 0) 1792 error = EIO; 1793 } 1794 1795 out: 1796 if (read_argp) 1797 free(read_argp, M_PUFFS); 1798 if (write_argp) 1799 free(write_argp, M_PUFFS); 1800 1801 biodone(ap->a_bp); 1802 return error; 1803 } 1804 1805 /* 1806 * The rest don't get a free trip to userspace and back, they 1807 * have to stay within the kernel. 1808 */ 1809 1810 /* 1811 * bmap doesn't really make any sense for puffs, so just 1:1 map it. 1812 * well, maybe somehow, somewhere, some day .... 1813 */ 1814 int 1815 puffs_bmap(void *v) 1816 { 1817 struct vop_bmap_args /* { 1818 const struct vnodeop_desc *a_desc; 1819 struct vnode *a_vp; 1820 daddr_t a_bn; 1821 struct vnode **a_vpp; 1822 daddr_t *a_bnp; 1823 int *a_runp; 1824 } */ *ap = v; 1825 struct puffs_mount *pmp; 1826 1827 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1828 1829 if (ap->a_vpp) 1830 *ap->a_vpp = ap->a_vp; 1831 if (ap->a_bnp) 1832 *ap->a_bnp = ap->a_bn; 1833 if (ap->a_runp) 1834 *ap->a_runp = pmp->pmp_req_maxsize - PUFFS_REQSTRUCT_MAX; 1835 1836 return 0; 1837 } 1838 1839 /* 1840 * moreXXX: yes, todo 1841 */ 1842 int 1843 puffs_lock(void *v) 1844 { 1845 struct vop_lock_args /* { 1846 struct vnode *a_vp; 1847 int a_flags; 1848 }*/ *ap = v; 1849 struct vnode *vp = ap->a_vp; 1850 1851 #if 0 1852 DPRINTF(("puffs_lock: lock %p, args 0x%x\n", vp, ap->a_flags)); 1853 #endif 1854 1855 return lockmgr(&vp->v_lock, ap->a_flags, &vp->v_interlock); 1856 } 1857 1858 int 1859 puffs_unlock(void *v) 1860 { 1861 struct vop_unlock_args /* { 1862 struct vnode *a_vp; 1863 int a_flags; 1864 } */ *ap = v; 1865 struct vnode *vp = ap->a_vp; 1866 1867 #if 0 1868 DPRINTF(("puffs_unlock: lock %p, args 0x%x\n", vp, ap->a_flags)); 1869 #endif 1870 1871 return lockmgr(&vp->v_lock, ap->a_flags | LK_RELEASE, &vp->v_interlock); 1872 } 1873 1874 int 1875 puffs_islocked(void *v) 1876 { 1877 struct vop_islocked_args *ap = v; 1878 int rv; 1879 1880 rv = lockstatus(&ap->a_vp->v_lock); 1881 return rv; 1882 } 1883 1884 int 1885 puffs_mmap(void *v) 1886 { 1887 struct vop_mmap_args *ap = v; 1888 struct puffs_mount *pmp; 1889 1890 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1891 1892 if (pmp->pmp_flags & PUFFS_KFLAG_NOCACHE) 1893 return genfs_eopnotsupp(v); 1894 1895 return genfs_mmap(v); 1896 } 1897 1898 int 1899 puffs_generic(void *v) 1900 { 1901 struct vop_generic_args *ap = v; 1902 1903 (void)ap; 1904 DPRINTF(("puffs_generic: ap->a_desc = %s\n", ap->a_desc->vdesc_name)); 1905 1906 return EOPNOTSUPP; 1907 } 1908
Indexes created Tue Sep 30 11:09:46 GMT 2025