puffs_vnops.c revision 1.26
1 /* $NetBSD: puffs_vnops.c,v 1.26 2007/01/01 20:16:36 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 1.26 2007/01/01 20:16:36 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_spec_read(void *); 85 int puffs_spec_write(void *); 86 int puffs_fifo_read(void *); 87 int puffs_fifo_write(void *); 88 89 int puffs_checkop(void *); 90 91 92 /* VOP_LEASE() not included */ 93 94 int puffs_generic(void *); 95 96 #if 0 97 #define puffs_lock genfs_lock 98 #define puffs_unlock genfs_unlock 99 #define puffs_islocked genfs_islocked 100 #else 101 int puffs_lock(void *); 102 int puffs_unlock(void *); 103 int puffs_islocked(void *); 104 #endif 105 106 int (**puffs_vnodeop_p)(void *); 107 const struct vnodeopv_entry_desc puffs_vnodeop_entries[] = { 108 { &vop_default_desc, vn_default_error }, 109 { &vop_lookup_desc, puffs_lookup }, /* REAL lookup */ 110 { &vop_create_desc, puffs_checkop }, /* create */ 111 { &vop_mknod_desc, puffs_checkop }, /* mknod */ 112 { &vop_open_desc, puffs_checkop }, /* open */ 113 { &vop_close_desc, puffs_checkop }, /* close */ 114 { &vop_access_desc, puffs_checkop }, /* access */ 115 { &vop_getattr_desc, puffs_checkop }, /* getattr */ 116 { &vop_setattr_desc, puffs_checkop }, /* setattr */ 117 { &vop_read_desc, puffs_checkop }, /* read */ 118 { &vop_write_desc, puffs_checkop }, /* write */ 119 { &vop_fcntl_desc, puffs_checkop }, /* fcntl */ 120 { &vop_ioctl_desc, puffs_checkop }, /* ioctl */ 121 { &vop_fsync_desc, puffs_checkop }, /* fsync */ 122 { &vop_seek_desc, puffs_checkop }, /* seek */ 123 { &vop_remove_desc, puffs_checkop }, /* remove */ 124 { &vop_link_desc, puffs_checkop }, /* link */ 125 { &vop_rename_desc, puffs_checkop }, /* rename */ 126 { &vop_mkdir_desc, puffs_checkop }, /* mkdir */ 127 { &vop_rmdir_desc, puffs_checkop }, /* rmdir */ 128 { &vop_symlink_desc, puffs_checkop }, /* symlink */ 129 { &vop_readdir_desc, puffs_checkop }, /* readdir */ 130 { &vop_readlink_desc, puffs_checkop }, /* readlink */ 131 { &vop_getpages_desc, puffs_checkop }, /* getpages */ 132 { &vop_putpages_desc, puffs_checkop }, /* putpages */ 133 { &vop_pathconf_desc, puffs_checkop }, /* pathconf */ 134 { &vop_advlock_desc, puffs_checkop }, /* advlock */ 135 { &vop_strategy_desc, puffs_strategy }, /* REAL strategy */ 136 { &vop_revoke_desc, puffs_revoke }, /* REAL revoke */ 137 { &vop_abortop_desc, genfs_abortop }, /* REAL abortop */ 138 { &vop_inactive_desc, puffs_inactive }, /* REAL inactive */ 139 { &vop_reclaim_desc, puffs_reclaim }, /* REAL reclaim */ 140 { &vop_lock_desc, puffs_lock }, /* REAL lock */ 141 { &vop_unlock_desc, puffs_unlock }, /* REAL unlock */ 142 { &vop_bmap_desc, puffs_bmap }, /* REAL bmap */ 143 { &vop_print_desc, puffs_print }, /* REAL print */ 144 { &vop_islocked_desc, puffs_islocked }, /* REAL islocked */ 145 { &vop_bwrite_desc, genfs_nullop }, /* REAL bwrite */ 146 { &vop_mmap_desc, puffs_mmap }, /* REAL mmap */ 147 148 { &vop_poll_desc, genfs_eopnotsupp }, /* poll XXX */ 149 { &vop_poll_desc, genfs_eopnotsupp }, /* kqfilter XXX */ 150 { NULL, NULL } 151 }; 152 const struct vnodeopv_desc puffs_vnodeop_opv_desc = 153 { &puffs_vnodeop_p, puffs_vnodeop_entries }; 154 155 156 int (**puffs_specop_p)(void *); 157 const struct vnodeopv_entry_desc puffs_specop_entries[] = { 158 { &vop_default_desc, vn_default_error }, 159 { &vop_lookup_desc, spec_lookup }, /* lookup, ENOTDIR */ 160 { &vop_create_desc, spec_create }, /* genfs_badop */ 161 { &vop_mknod_desc, spec_mknod }, /* genfs_badop */ 162 { &vop_open_desc, spec_open }, /* spec_open */ 163 { &vop_close_desc, spec_close }, /* spec_close */ 164 { &vop_access_desc, puffs_checkop }, /* access */ 165 { &vop_getattr_desc, puffs_checkop }, /* getattr */ 166 { &vop_setattr_desc, puffs_checkop }, /* setattr */ 167 { &vop_read_desc, puffs_spec_read }, /* update, read */ 168 { &vop_write_desc, puffs_spec_write }, /* update, write */ 169 { &vop_lease_desc, spec_lease_check }, /* genfs_nullop */ 170 { &vop_ioctl_desc, spec_ioctl }, /* spec_ioctl */ 171 { &vop_fcntl_desc, genfs_fcntl }, /* dummy */ 172 { &vop_poll_desc, spec_poll }, /* spec_poll */ 173 { &vop_kqfilter_desc, spec_kqfilter }, /* spec_kqfilter */ 174 { &vop_revoke_desc, spec_revoke }, /* genfs_revoke */ 175 { &vop_mmap_desc, spec_mmap }, /* genfs_mmap (dummy) */ 176 { &vop_fsync_desc, spec_fsync }, /* vflushbuf */ 177 { &vop_seek_desc, spec_seek }, /* genfs_nullop */ 178 { &vop_remove_desc, spec_remove }, /* genfs_badop */ 179 { &vop_link_desc, spec_link }, /* genfs_badop */ 180 { &vop_rename_desc, spec_rename }, /* genfs_badop */ 181 { &vop_mkdir_desc, spec_mkdir }, /* genfs_badop */ 182 { &vop_rmdir_desc, spec_rmdir }, /* genfs_badop */ 183 { &vop_symlink_desc, spec_symlink }, /* genfs_badop */ 184 { &vop_readdir_desc, spec_readdir }, /* genfs_badop */ 185 { &vop_readlink_desc, spec_readlink }, /* genfs_badop */ 186 { &vop_abortop_desc, spec_abortop }, /* genfs_badop */ 187 { &vop_inactive_desc, puffs_inactive }, /* REAL inactive */ 188 { &vop_reclaim_desc, puffs_reclaim }, /* REAL reclaim */ 189 { &vop_lock_desc, puffs_lock }, /* REAL lock */ 190 { &vop_unlock_desc, puffs_unlock }, /* REAL unlock */ 191 { &vop_bmap_desc, spec_bmap }, /* dummy */ 192 { &vop_strategy_desc, spec_strategy }, /* dev strategy */ 193 { &vop_print_desc, puffs_print }, /* REAL print */ 194 { &vop_islocked_desc, puffs_islocked }, /* REAL islocked */ 195 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 196 { &vop_advlock_desc, spec_advlock }, /* lf_advlock */ 197 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 198 { &vop_getpages_desc, spec_getpages }, /* genfs_getpages */ 199 { &vop_putpages_desc, spec_putpages }, /* genfs_putpages */ 200 #if 0 201 { &vop_openextattr_desc, _openextattr }, /* openextattr */ 202 { &vop_closeextattr_desc, _closeextattr }, /* closeextattr */ 203 { &vop_getextattr_desc, _getextattr }, /* getextattr */ 204 { &vop_setextattr_desc, _setextattr }, /* setextattr */ 205 { &vop_listextattr_desc, _listextattr }, /* listextattr */ 206 { &vop_deleteextattr_desc, _deleteextattr }, /* deleteextattr */ 207 #endif 208 { NULL, NULL } 209 }; 210 const struct vnodeopv_desc puffs_specop_opv_desc = 211 { &puffs_specop_p, puffs_specop_entries }; 212 213 214 int (**puffs_fifoop_p)(void *); 215 const struct vnodeopv_entry_desc puffs_fifoop_entries[] = { 216 { &vop_default_desc, vn_default_error }, 217 { &vop_lookup_desc, fifo_lookup }, /* lookup, ENOTDIR */ 218 { &vop_create_desc, fifo_create }, /* genfs_badop */ 219 { &vop_mknod_desc, fifo_mknod }, /* genfs_badop */ 220 { &vop_open_desc, fifo_open }, /* open */ 221 { &vop_close_desc, fifo_close }, /* close */ 222 { &vop_access_desc, puffs_checkop }, /* access */ 223 { &vop_getattr_desc, puffs_checkop }, /* getattr */ 224 { &vop_setattr_desc, puffs_checkop }, /* setattr */ 225 { &vop_read_desc, puffs_fifo_read }, /* read, update */ 226 { &vop_write_desc, puffs_fifo_write }, /* write, update */ 227 { &vop_lease_desc, fifo_lease_check }, /* genfs_nullop */ 228 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 229 { &vop_fcntl_desc, genfs_fcntl }, /* dummy */ 230 { &vop_poll_desc, fifo_poll }, /* poll */ 231 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 232 { &vop_revoke_desc, fifo_revoke }, /* genfs_revoke */ 233 { &vop_mmap_desc, fifo_mmap }, /* genfs_badop */ 234 { &vop_fsync_desc, puffs_checkop }, /* fsync */ 235 { &vop_seek_desc, fifo_seek }, /* genfs_badop */ 236 { &vop_remove_desc, fifo_remove }, /* genfs_badop */ 237 { &vop_link_desc, fifo_link }, /* genfs_badop */ 238 { &vop_rename_desc, fifo_rename }, /* genfs_badop */ 239 { &vop_mkdir_desc, fifo_mkdir }, /* genfs_badop */ 240 { &vop_rmdir_desc, fifo_rmdir }, /* genfs_badop */ 241 { &vop_symlink_desc, fifo_symlink }, /* genfs_badop */ 242 { &vop_readdir_desc, fifo_readdir }, /* genfs_badop */ 243 { &vop_readlink_desc, fifo_readlink }, /* genfs_badop */ 244 { &vop_abortop_desc, fifo_abortop }, /* genfs_badop */ 245 { &vop_inactive_desc, puffs_inactive }, /* REAL inactive */ 246 { &vop_reclaim_desc, puffs_reclaim }, /* REAL reclaim */ 247 { &vop_lock_desc, puffs_lock }, /* REAL lock */ 248 { &vop_unlock_desc, puffs_unlock }, /* REAL unlock */ 249 { &vop_bmap_desc, fifo_bmap }, /* dummy */ 250 { &vop_strategy_desc, fifo_strategy }, /* genfs_badop */ 251 { &vop_print_desc, puffs_print }, /* REAL print */ 252 { &vop_islocked_desc, puffs_islocked }, /* REAL islocked */ 253 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 254 { &vop_advlock_desc, fifo_advlock }, /* genfs_einval */ 255 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 256 { &vop_putpages_desc, fifo_putpages }, /* genfs_null_putpages*/ 257 #if 0 258 { &vop_openextattr_desc, _openextattr }, /* openextattr */ 259 { &vop_closeextattr_desc, _closeextattr }, /* closeextattr */ 260 { &vop_getextattr_desc, _getextattr }, /* getextattr */ 261 { &vop_setextattr_desc, _setextattr }, /* setextattr */ 262 { &vop_listextattr_desc, _listextattr }, /* listextattr */ 263 { &vop_deleteextattr_desc, _deleteextattr }, /* deleteextattr */ 264 #endif 265 { NULL, NULL } 266 }; 267 const struct vnodeopv_desc puffs_fifoop_opv_desc = 268 { &puffs_fifoop_p, puffs_fifoop_entries }; 269 270 271 /* "real" vnode operations */ 272 int (**puffs_msgop_p)(void *); 273 const struct vnodeopv_entry_desc puffs_msgop_entries[] = { 274 { &vop_default_desc, vn_default_error }, 275 { &vop_create_desc, puffs_create }, /* create */ 276 { &vop_mknod_desc, puffs_mknod }, /* mknod */ 277 { &vop_open_desc, puffs_open }, /* open */ 278 { &vop_close_desc, puffs_close }, /* close */ 279 { &vop_access_desc, puffs_access }, /* access */ 280 { &vop_getattr_desc, puffs_getattr }, /* getattr */ 281 { &vop_setattr_desc, puffs_setattr }, /* setattr */ 282 { &vop_read_desc, puffs_read }, /* read */ 283 { &vop_write_desc, puffs_write }, /* write */ 284 { &vop_fcntl_desc, puffs_fcntl }, /* fcntl */ 285 { &vop_ioctl_desc, puffs_ioctl }, /* ioctl */ 286 { &vop_fsync_desc, puffs_fsync }, /* fsync */ 287 { &vop_seek_desc, puffs_seek }, /* seek */ 288 { &vop_remove_desc, puffs_remove }, /* remove */ 289 { &vop_link_desc, puffs_link }, /* link */ 290 { &vop_rename_desc, puffs_rename }, /* rename */ 291 { &vop_mkdir_desc, puffs_mkdir }, /* mkdir */ 292 { &vop_rmdir_desc, puffs_rmdir }, /* rmdir */ 293 { &vop_symlink_desc, puffs_symlink }, /* symlink */ 294 { &vop_readdir_desc, puffs_readdir }, /* readdir */ 295 { &vop_readlink_desc, puffs_readlink }, /* readlink */ 296 { &vop_print_desc, puffs_print }, /* print */ 297 { &vop_islocked_desc, puffs_islocked }, /* islocked */ 298 { &vop_pathconf_desc, puffs_pathconf }, /* pathconf */ 299 { &vop_advlock_desc, puffs_advlock }, /* advlock */ 300 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 301 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 302 { NULL, NULL } 303 }; 304 const struct vnodeopv_desc puffs_msgop_opv_desc = 305 { &puffs_msgop_p, puffs_msgop_entries }; 306 307 308 #define LOCKEDVP(a) (VOP_ISLOCKED(a) ? (a) : NULL) 309 310 311 /* 312 * This is a generic vnode operation handler. It checks if the necessary 313 * operations for the called vnode operation are implemented by userspace 314 * and either returns a dummy return value or proceeds to call the real 315 * vnode operation from puffs_msgop_v. 316 * 317 * XXX: this should described elsewhere and autogenerated, the complexity 318 * of the vnode operations vectors and their interrelationships is also 319 * getting a bit out of hand. Another problem is that we need this same 320 * information in the fs server code, so keeping the two in sync manually 321 * is not a viable (long term) plan. 322 */ 323 324 /* not supported, handle locking protocol */ 325 #define CHECKOP_NOTSUPP(op) \ 326 case VOP_##op##_DESCOFFSET: \ 327 if (pmp->pmp_vnopmask[PUFFS_VN_##op] == 0) \ 328 return genfs_eopnotsupp(v); \ 329 break 330 331 /* always succeed, no locking */ 332 #define CHECKOP_SUCCESS(op) \ 333 case VOP_##op##_DESCOFFSET: \ 334 if (pmp->pmp_vnopmask[PUFFS_VN_##op] == 0) \ 335 return 0; \ 336 break 337 338 int 339 puffs_checkop(void *v) 340 { 341 struct vop_generic_args /* { 342 struct vnodeop_desc *a_desc; 343 spooky mystery contents; 344 } */ *ap = v; 345 struct vnodeop_desc *desc = ap->a_desc; 346 struct puffs_mount *pmp; 347 struct vnode *vp; 348 int offset; 349 350 DPRINTF_VERBOSE(("checkop call %s (%d)\n", 351 ap->a_desc->vdesc_name, ap->a_desc->vdesc_offset)); 352 353 offset = ap->a_desc->vdesc_vp_offsets[0]; 354 #ifdef DIAGNOSTIC 355 if (offset == VDESC_NO_OFFSET) 356 panic("puffs_checkop: no vnode, why did you call me?"); 357 #endif 358 vp = *VOPARG_OFFSETTO(struct vnode **, offset, ap); 359 pmp = MPTOPUFFSMP(vp->v_mount); 360 361 if ((pmp->pmp_flags & PUFFS_KFLAG_ALLOPS) == 0) { 362 switch (desc->vdesc_offset) { 363 CHECKOP_NOTSUPP(CREATE); 364 CHECKOP_NOTSUPP(MKNOD); 365 CHECKOP_NOTSUPP(GETATTR); 366 CHECKOP_NOTSUPP(SETATTR); 367 CHECKOP_NOTSUPP(READ); 368 CHECKOP_NOTSUPP(WRITE); 369 CHECKOP_NOTSUPP(FCNTL); 370 CHECKOP_NOTSUPP(IOCTL); 371 CHECKOP_NOTSUPP(REMOVE); 372 CHECKOP_NOTSUPP(LINK); 373 CHECKOP_NOTSUPP(RENAME); 374 CHECKOP_NOTSUPP(MKDIR); 375 CHECKOP_NOTSUPP(RMDIR); 376 CHECKOP_NOTSUPP(SYMLINK); 377 CHECKOP_NOTSUPP(READDIR); 378 CHECKOP_NOTSUPP(READLINK); 379 CHECKOP_NOTSUPP(PRINT); 380 CHECKOP_NOTSUPP(PATHCONF); 381 CHECKOP_NOTSUPP(ADVLOCK); 382 383 CHECKOP_SUCCESS(OPEN); 384 CHECKOP_SUCCESS(CLOSE); 385 CHECKOP_SUCCESS(ACCESS); 386 CHECKOP_SUCCESS(SEEK); 387 388 /* putpages & fsync doesn't make sense if there's no write */ 389 case VOP_FSYNC_DESCOFFSET: 390 if (!EXISTSOP(pmp, WRITE)) 391 return genfs_eopnotsupp(v); 392 break; 393 394 case VOP_GETPAGES_DESCOFFSET: 395 if (!EXISTSOP(pmp, READ)) 396 return genfs_eopnotsupp(v); 397 break; 398 399 case VOP_PUTPAGES_DESCOFFSET: 400 if (!EXISTSOP(pmp, WRITE)) 401 return genfs_null_putpages(v); 402 break; 403 404 default: 405 panic("puffs_checkop: unhandled vnop %d", 406 desc->vdesc_offset); 407 } 408 } 409 410 return VOCALL(puffs_msgop_p, ap->a_desc->vdesc_offset, v); 411 } 412 413 414 int 415 puffs_lookup(void *v) 416 { 417 struct vop_lookup_args /* { 418 const struct vnodeop_desc *a_desc; 419 struct vnode *a_dvp; 420 struct vnode **a_vpp; 421 struct componentname *a_cnp; 422 } */ *ap = v; 423 struct puffs_mount *pmp; 424 struct componentname *cnp; 425 struct vnode *vp, *dvp; 426 int isdot; 427 int error; 428 429 PUFFS_VNREQ(lookup); 430 431 pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 432 cnp = ap->a_cnp; 433 dvp = ap->a_dvp; 434 *ap->a_vpp = NULL; 435 436 /* first things first: check access */ 437 error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, cnp->cn_lwp); 438 if (error) 439 return error; 440 441 isdot = cnp->cn_namelen == 1 && *cnp->cn_nameptr == '.'; 442 443 DPRINTF(("puffs_lookup: \"%s\", parent vnode %p, op: %lx\n", 444 cnp->cn_nameptr, dvp, cnp->cn_nameiop)); 445 446 /* 447 * Do sanity checks we can do without consulting userland. 448 */ 449 450 /* 451 * last component check & ro fs 452 * 453 * hmmm... why doesn't this check for create? 454 */ 455 if ((cnp->cn_flags & ISLASTCN) 456 && (ap->a_dvp->v_mount->mnt_flag & MNT_RDONLY) 457 && (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) { 458 DPRINTF(("puffs_lookup: write lookup for read-only fs!\n")); 459 return EROFS; 460 } 461 462 /* 463 * Check if someone fed it into the cache 464 */ 465 if (PUFFS_DOCACHE(pmp)) { 466 error = cache_lookup(dvp, ap->a_vpp, cnp); 467 if (error >= 0) 468 return error; 469 } 470 471 if (isdot) { 472 vp = ap->a_dvp; 473 vref(vp); 474 *ap->a_vpp = vp; 475 return 0; 476 } 477 478 puffs_makecn(&lookup_arg.pvnr_cn, cnp); 479 480 if (cnp->cn_flags & ISDOTDOT) 481 VOP_UNLOCK(dvp, 0); 482 483 error = puffs_vntouser(pmp, PUFFS_VN_LOOKUP, 484 &lookup_arg, sizeof(lookup_arg), VPTOPNC(dvp), LOCKEDVP(dvp), NULL); 485 DPRINTF(("puffs_lookup: return of the userspace, part %d\n", error)); 486 487 /* 488 * In case of error, there is no new vnode to play with, so be 489 * happy with the NULL value given to vpp in the beginning. 490 * Also, check if this really was an error or the target was not 491 * present. Either treat it as a non-error for CREATE/RENAME or 492 * enter the component into the negative name cache (if desired). 493 */ 494 if (error) { 495 if (error == ENOENT) { 496 if ((cnp->cn_flags & ISLASTCN) 497 && (cnp->cn_nameiop == CREATE 498 || cnp->cn_nameiop == RENAME)) { 499 cnp->cn_flags |= SAVENAME; 500 error = EJUSTRETURN; 501 } else { 502 if ((cnp->cn_flags & MAKEENTRY) 503 && PUFFS_DOCACHE(pmp)) 504 cache_enter(dvp, NULL, cnp); 505 } 506 } 507 goto errout; 508 } 509 510 vp = puffs_pnode2vnode(pmp, lookup_arg.pvnr_newnode); 511 if (!vp) { 512 error = puffs_getvnode(dvp->v_mount, 513 lookup_arg.pvnr_newnode, lookup_arg.pvnr_vtype, 514 lookup_arg.pvnr_size, lookup_arg.pvnr_rdev, &vp); 515 if (error) { 516 goto errout; 517 } 518 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 519 } 520 *ap->a_vpp = vp; 521 522 if ((cnp->cn_flags & MAKEENTRY) != 0 && PUFFS_DOCACHE(pmp)) 523 cache_enter(dvp, vp, cnp); 524 525 errout: 526 if (cnp->cn_flags & ISDOTDOT) 527 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 528 529 return error; 530 } 531 532 int 533 puffs_create(void *v) 534 { 535 struct vop_create_args /* { 536 const struct vnodeop_desc *a_desc; 537 struct vnode *a_dvp; 538 struct vnode **a_vpp; 539 struct componentname *a_cnp; 540 struct vattr *a_vap; 541 } */ *ap = v; 542 int error; 543 544 PUFFS_VNREQ(create); 545 546 puffs_makecn(&create_arg.pvnr_cn, ap->a_cnp); 547 create_arg.pvnr_va = *ap->a_vap; 548 549 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_CREATE, 550 &create_arg, sizeof(create_arg), VPTOPNC(ap->a_dvp), 551 ap->a_dvp, NULL); 552 if (error) 553 goto out; 554 555 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 556 create_arg.pvnr_newnode, ap->a_cnp, ap->a_vap->va_type, 0); 557 558 out: 559 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 560 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 561 vput(ap->a_dvp); 562 return error; 563 } 564 565 int 566 puffs_mknod(void *v) 567 { 568 struct vop_mknod_args /* { 569 const struct vnodeop_desc *a_desc; 570 struct vnode *a_dvp; 571 struct vnode **a_vpp; 572 struct componentname *a_cnp; 573 struct vattr *a_vap; 574 } */ *ap = v; 575 int error; 576 577 PUFFS_VNREQ(mknod); 578 579 puffs_makecn(&mknod_arg.pvnr_cn, ap->a_cnp); 580 mknod_arg.pvnr_va = *ap->a_vap; 581 582 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_MKNOD, 583 &mknod_arg, sizeof(mknod_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 584 if (error) 585 goto out; 586 587 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 588 mknod_arg.pvnr_newnode, ap->a_cnp, ap->a_vap->va_type, 589 ap->a_vap->va_rdev); 590 591 out: 592 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 593 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 594 vput(ap->a_dvp); 595 return error; 596 } 597 598 int 599 puffs_open(void *v) 600 { 601 struct vop_open_args /* { 602 const struct vnodeop_desc *a_desc; 603 struct vnode *a_vp; 604 int a_mode; 605 kauth_cred_t a_cred; 606 struct lwp *a_l; 607 } */ *ap = v; 608 609 PUFFS_VNREQ(open); 610 611 open_arg.pvnr_mode = ap->a_mode; 612 puffs_credcvt(&open_arg.pvnr_cred, ap->a_cred); 613 open_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 614 615 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_OPEN, 616 &open_arg, sizeof(open_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 617 } 618 619 int 620 puffs_close(void *v) 621 { 622 struct vop_close_args /* { 623 const struct vnodeop_desc *a_desc; 624 struct vnode *a_vp; 625 int a_fflag; 626 kauth_cred_t a_cred; 627 struct lwp *a_l; 628 } */ *ap = v; 629 630 PUFFS_VNREQ(close); 631 632 close_arg.pvnr_fflag = ap->a_fflag; 633 puffs_credcvt(&close_arg.pvnr_cred, ap->a_cred); 634 close_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 635 636 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_CLOSE, 637 &close_arg, sizeof(close_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 638 } 639 640 int 641 puffs_access(void *v) 642 { 643 struct vop_access_args /* { 644 const struct vnodeop_desc *a_desc; 645 struct vnode *a_vp; 646 int a_mode; 647 kauth_cred_t a_cred; 648 struct lwp *a_l; 649 } */ *ap = v; 650 651 PUFFS_VNREQ(access); 652 653 access_arg.pvnr_mode = ap->a_mode; 654 access_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 655 puffs_credcvt(&access_arg.pvnr_cred, ap->a_cred); 656 657 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_ACCESS, 658 &access_arg, sizeof(access_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 659 } 660 661 int 662 puffs_getattr(void *v) 663 { 664 struct vop_getattr_args /* { 665 const struct vnodeop_desc *a_desc; 666 struct vnode *a_vp; 667 struct vattr *a_vap; 668 kauth_cred_t a_cred; 669 struct lwp *a_l; 670 } */ *ap = v; 671 struct mount *mp; 672 int error; 673 674 PUFFS_VNREQ(getattr); 675 676 mp = ap->a_vp->v_mount; 677 678 vattr_null(&getattr_arg.pvnr_va); 679 puffs_credcvt(&getattr_arg.pvnr_cred, ap->a_cred); 680 getattr_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 681 682 /* 683 * XXX + XX (dos equis): this can't go through the unlock/lock 684 * cycle, since it can be called from uvn_attach(), which fiddles 685 * around with VXLOCK and therefore breaks vn_lock(). Proper 686 * fix pending. 687 */ 688 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_GETATTR, 689 &getattr_arg, sizeof(getattr_arg), VPTOPNC(ap->a_vp), 690 NULL /* XXXseeabove: should be LOCKEDVP(ap->a_vp) */, NULL); 691 if (error) 692 return error; 693 694 (void)memcpy(ap->a_vap, &getattr_arg.pvnr_va, sizeof(struct vattr)); 695 696 /* 697 * fill in information userspace does not have 698 * XXX: but would it be better to do fsid at the generic level? 699 */ 700 ap->a_vap->va_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 701 702 return 0; 703 } 704 705 int 706 puffs_setattr(void *v) 707 { 708 struct vop_getattr_args /* { 709 const struct vnodeop_desc *a_desc; 710 struct vnode *a_vp; 711 struct vattr *a_vap; 712 kauth_cred_t a_cred; 713 struct lwp *a_l; 714 } */ *ap = v; 715 int error; 716 717 PUFFS_VNREQ(setattr); 718 719 (void)memcpy(&setattr_arg.pvnr_va, ap->a_vap, sizeof(struct vattr)); 720 puffs_credcvt(&setattr_arg.pvnr_cred, ap->a_cred); 721 setattr_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 722 723 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_SETATTR, 724 &setattr_arg, sizeof(setattr_arg), VPTOPNC(ap->a_vp), 725 ap->a_vp, NULL); 726 if (error) 727 return error; 728 729 if (ap->a_vap->va_size != VNOVAL) 730 uvm_vnp_setsize(ap->a_vp, ap->a_vap->va_size); 731 732 return 0; 733 } 734 735 int 736 puffs_revoke(void *v) 737 { 738 struct vop_revoke_args /* { 739 const struct vnodeop_desc *a_desc; 740 struct vnode *a_vp; 741 int a_flags; 742 } */ *ap = v; 743 struct puffs_mount *pmp; 744 745 PUFFS_VNREQ(revoke); 746 747 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 748 749 revoke_arg.pvnr_flags = ap->a_flags; 750 751 /* don't really care if userspace doesn't want to play along */ 752 if (EXISTSOP(pmp, REVOKE)) 753 puffs_vntouser(pmp, PUFFS_VN_REVOKE, 754 &revoke_arg, sizeof(revoke_arg), VPTOPNC(ap->a_vp), 755 NULL, NULL); 756 757 return genfs_revoke(v); 758 } 759 760 /* 761 * There is no technical need to have this travel to userspace 762 * synchronously. So once async reply support is in place, make this 763 * async. 764 */ 765 int 766 puffs_inactive(void *v) 767 { 768 struct vop_inactive_args /* { 769 const struct vnodeop_desc *a_desc; 770 struct vnode *a_vp; 771 struct lwp *a_l; 772 } */ *ap = v; 773 struct puffs_mount *pmp; 774 struct puffs_node *pnode; 775 int rv, vnrefs; 776 777 PUFFS_VNREQ(inactive); 778 779 /* 780 * XXX: think about this after we really start unlocking 781 * when going to userspace 782 */ 783 pnode = ap->a_vp->v_data; 784 pnode->pn_stat |= PNODE_INACTIVE; 785 786 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 787 788 inactive_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 789 790 if (EXISTSOP(pmp, INACTIVE)) 791 rv = puffs_vntouser(pmp, PUFFS_VN_INACTIVE, 792 &inactive_arg, sizeof(inactive_arg), VPTOPNC(ap->a_vp), 793 ap->a_vp, NULL); 794 else 795 rv = 1; /* see below */ 796 797 /* can't trust userspace return value? simulate safe answer */ 798 if (rv) 799 vnrefs = 1; 800 else 801 vnrefs = inactive_arg.pvnr_backendrefs; 802 803 VOP_UNLOCK(ap->a_vp, 0); 804 805 /* 806 * user server thinks it's gone? then don't be afraid care, 807 * node's life was already all it would ever be 808 */ 809 if (vnrefs == 0) 810 vrecycle(ap->a_vp, NULL, ap->a_l); 811 812 return 0; 813 } 814 815 int 816 puffs_reclaim(void *v) 817 { 818 struct vop_reclaim_args /* { 819 const struct vnodeop_desc *a_desc; 820 struct vnode *a_vp; 821 struct lwp *a_l; 822 } */ *ap = v; 823 struct puffs_mount *pmp; 824 int error; 825 826 PUFFS_VNREQ(reclaim); 827 828 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 829 830 /* 831 * first things first: check if someone is trying to reclaim the 832 * root vnode. do not allow that to travel to userspace. 833 * Note that we don't need to take the lock similarly to 834 * puffs_root(), since there is only one of us. 835 */ 836 if (ap->a_vp->v_flag & VROOT) { 837 #ifdef DIAGNOSTIC 838 simple_lock(&pmp->pmp_lock); 839 if (pmp->pmp_root == NULL) 840 panic("puffs_reclaim: releasing root vnode (%p) twice", 841 ap->a_vp); 842 simple_unlock(&pmp->pmp_lock); 843 #endif 844 pmp->pmp_root = NULL; 845 puffs_putvnode(ap->a_vp); 846 return 0; 847 } 848 849 reclaim_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 850 851 if (EXISTSOP(pmp, RECLAIM)) 852 error = puffs_vntouser(pmp, PUFFS_VN_RECLAIM, 853 &reclaim_arg, sizeof(reclaim_arg), VPTOPNC(ap->a_vp), 854 NULL, NULL); 855 else 856 error = 0; 857 #if 0 858 /* 859 * XXX: if reclaim fails for any other reason than the userspace 860 * being dead, we should consider unmounting the filesystem, since 861 * we can't trust it to be in a consistent state anymore. But for 862 * now, just ignore all errors. 863 */ 864 if (error) 865 return error; 866 #endif 867 868 if (PUFFS_DOCACHE(pmp)) 869 cache_purge(ap->a_vp); 870 puffs_putvnode(ap->a_vp); 871 872 return 0; 873 } 874 875 int 876 puffs_readdir(void *v) 877 { 878 struct vop_readdir_args /* { 879 const struct vnodeop_desc *a_desc; 880 struct vnode *a_vp; 881 struct uio *a_uio; 882 kauth_cred_t a_cred; 883 int *a_eofflag; 884 off_t **a_cookies; 885 int *a_ncookies; 886 } */ *ap = v; 887 struct puffs_vnreq_readdir *readdir_argp; 888 size_t argsize; 889 struct uio *uio = ap->a_uio; 890 size_t howmuch; 891 int error; 892 893 /* worry about these later */ 894 if (!(ap->a_cookies == NULL && ap->a_ncookies == NULL)) 895 return EOPNOTSUPP; 896 897 argsize = sizeof(struct puffs_vnreq_readdir); 898 readdir_argp = malloc(argsize, M_PUFFS, M_ZERO | M_WAITOK); 899 900 puffs_credcvt(&readdir_argp->pvnr_cred, ap->a_cred); 901 readdir_argp->pvnr_offset = uio->uio_offset; 902 readdir_argp->pvnr_resid = uio->uio_resid; 903 904 error = puffs_vntouser_adjbuf(MPTOPUFFSMP(ap->a_vp->v_mount), 905 PUFFS_VN_READDIR, (void **)&readdir_argp, &argsize, 906 readdir_argp->pvnr_resid, VPTOPNC(ap->a_vp), ap->a_vp, NULL); 907 if (error) 908 goto out; 909 910 /* userspace is cheating? */ 911 if (readdir_argp->pvnr_resid > uio->uio_resid) { 912 error = EINVAL; 913 goto out; 914 } 915 916 /* bouncy-wouncy with the directory data */ 917 howmuch = uio->uio_resid - readdir_argp->pvnr_resid; 918 error = uiomove(readdir_argp->pvnr_dent, howmuch, uio); 919 if (error) 920 goto out; 921 uio->uio_offset = readdir_argp->pvnr_offset; 922 923 out: 924 free(readdir_argp, M_PUFFS); 925 return error; 926 } 927 928 int 929 puffs_poll(void *v) 930 { 931 struct vop_poll_args /* { 932 const struct vnodeop_desc *a_desc; 933 struct vnode *a_vp; 934 int a_events; 935 struct lwp *a_l; 936 }*/ *ap = v; 937 938 PUFFS_VNREQ(poll); 939 940 poll_arg.pvnr_events = ap->a_events; 941 poll_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 942 943 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_POLL, 944 &poll_arg, sizeof(poll_arg), VPTOPNC(ap->a_vp), NULL, NULL); 945 } 946 947 int 948 puffs_fsync(void *v) 949 { 950 struct vop_fsync_args /* { 951 const struct vnodeop_desc *a_desc; 952 struct vnode *a_vp; 953 kauth_cred_t a_cred; 954 int a_flags; 955 off_t a_offlo; 956 off_t a_offhi; 957 struct lwp *a_l; 958 } */ *ap = v; 959 struct puffs_vnreq_fsync *fsync_argp; 960 struct vnode *vp; 961 int pflags, error; 962 963 PUFFS_VNREQ(fsync); 964 965 vp = ap->a_vp; 966 967 pflags = PGO_CLEANIT; 968 if (ap->a_flags & FSYNC_WAIT) { 969 pflags |= PGO_SYNCIO; 970 fsync_argp = &fsync_arg; 971 } else { 972 fsync_argp = malloc(sizeof(struct puffs_vnreq_fsync), 973 M_PUFFS, M_ZERO | M_NOWAIT); 974 if (fsync_argp == NULL) 975 return ENOMEM; 976 } 977 978 /* 979 * flush pages to avoid being overly dirty 980 */ 981 simple_lock(&vp->v_interlock); 982 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 983 round_page(ap->a_offhi), pflags); 984 if (error) 985 return error; 986 987 puffs_credcvt(&fsync_argp->pvnr_cred, ap->a_cred); 988 fsync_argp->pvnr_flags = ap->a_flags; 989 fsync_argp->pvnr_offlo = ap->a_offlo; 990 fsync_argp->pvnr_offhi = ap->a_offhi; 991 fsync_argp->pvnr_pid = puffs_lwp2pid(ap->a_l); 992 993 /* 994 * XXX: see comment at puffs_getattr about locking 995 * 996 * If we are not required to wait, do a FAF operation. 997 * Otherwise block here. 998 */ 999 if (ap->a_flags & FSYNC_WAIT) { 1000 error = puffs_vntouser(MPTOPUFFSMP(vp->v_mount), 1001 PUFFS_VN_FSYNC, fsync_argp, sizeof(*fsync_argp), 1002 VPTOPNC(vp), NULL /* XXXshouldbe: vp */, NULL); 1003 } else { 1004 /* FAF is always "succesful" */ 1005 error = 0; 1006 puffs_vntouser_faf(MPTOPUFFSMP(vp->v_mount), 1007 PUFFS_VN_FSYNC, fsync_argp, sizeof(*fsync_argp), 1008 VPTOPNC(vp)); 1009 } 1010 1011 return error; 1012 } 1013 1014 int 1015 puffs_seek(void *v) 1016 { 1017 struct vop_seek_args /* { 1018 const struct vnodeop_desc *a_desc; 1019 struct vnode *a_vp; 1020 off_t a_oldoff; 1021 off_t a_newoff; 1022 kauth_cred_t a_cred; 1023 } */ *ap = v; 1024 1025 PUFFS_VNREQ(seek); 1026 1027 seek_arg.pvnr_oldoff = ap->a_oldoff; 1028 seek_arg.pvnr_newoff = ap->a_newoff; 1029 puffs_credcvt(&seek_arg.pvnr_cred, ap->a_cred); 1030 1031 /* 1032 * XXX: seems like seek is called with an unlocked vp, but 1033 * it can't hurt to play safe 1034 */ 1035 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_SEEK, 1036 &seek_arg, sizeof(seek_arg), VPTOPNC(ap->a_vp), 1037 LOCKEDVP(ap->a_vp), NULL); 1038 } 1039 1040 int 1041 puffs_remove(void *v) 1042 { 1043 struct vop_remove_args /* { 1044 const struct vnodeop_desc *a_desc; 1045 struct vnode *a_dvp; 1046 struct vnode *a_vp; 1047 struct componentname *a_cnp; 1048 } */ *ap = v; 1049 int error; 1050 1051 PUFFS_VNREQ(remove); 1052 1053 remove_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1054 puffs_makecn(&remove_arg.pvnr_cn, ap->a_cnp); 1055 1056 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_REMOVE, 1057 &remove_arg, sizeof(remove_arg), VPTOPNC(ap->a_dvp), 1058 ap->a_dvp, ap->a_vp); 1059 1060 vput(ap->a_vp); 1061 if (ap->a_dvp == ap->a_vp) 1062 vrele(ap->a_dvp); 1063 else 1064 vput(ap->a_dvp); 1065 1066 return error; 1067 } 1068 1069 int 1070 puffs_mkdir(void *v) 1071 { 1072 struct vop_mkdir_args /* { 1073 const struct vnodeop_desc *a_desc; 1074 struct vnode *a_dvp; 1075 struct vnode **a_vpp; 1076 struct componentname *a_cnp; 1077 struct vattr *a_vap; 1078 } */ *ap = v; 1079 int error; 1080 1081 PUFFS_VNREQ(mkdir); 1082 1083 puffs_makecn(&mkdir_arg.pvnr_cn, ap->a_cnp); 1084 mkdir_arg.pvnr_va = *ap->a_vap; 1085 1086 /* XXX: wouldn't need to relock dvp, but that's life */ 1087 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_MKDIR, 1088 &mkdir_arg, sizeof(mkdir_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1089 if (error) 1090 goto out; 1091 1092 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 1093 mkdir_arg.pvnr_newnode, ap->a_cnp, VDIR, 0); 1094 1095 out: 1096 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 1097 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 1098 vput(ap->a_dvp); 1099 return error; 1100 } 1101 1102 int 1103 puffs_rmdir(void *v) 1104 { 1105 struct vop_rmdir_args /* { 1106 const struct vnodeop_desc *a_desc; 1107 struct vnode *a_dvp; 1108 struct vnode *a_vp; 1109 struct componentname *a_cnp; 1110 } */ *ap = v; 1111 int error; 1112 1113 PUFFS_VNREQ(rmdir); 1114 1115 rmdir_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1116 puffs_makecn(&rmdir_arg.pvnr_cn, ap->a_cnp); 1117 1118 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_RMDIR, 1119 &rmdir_arg, sizeof(rmdir_arg), VPTOPNC(ap->a_dvp), 1120 ap->a_dvp, ap->a_vp); 1121 1122 /* XXX: some call cache_purge() *for both vnodes* here, investigate */ 1123 1124 vput(ap->a_dvp); 1125 vput(ap->a_vp); 1126 1127 return error; 1128 } 1129 1130 int 1131 puffs_link(void *v) 1132 { 1133 struct vop_link_args /* { 1134 const struct vnodeop_desc *a_desc; 1135 struct vnode *a_dvp; 1136 struct vnode *a_vp; 1137 struct componentname *a_cnp; 1138 }*/ *ap = v; 1139 int error; 1140 1141 PUFFS_VNREQ(link); 1142 1143 link_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1144 puffs_makecn(&link_arg.pvnr_cn, ap->a_cnp); 1145 1146 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_LINK, 1147 &link_arg, sizeof(link_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1148 1149 vput(ap->a_dvp); 1150 1151 return error; 1152 } 1153 1154 int 1155 puffs_symlink(void *v) 1156 { 1157 struct vop_symlink_args /* { 1158 const struct vnodeop_desc *a_desc; 1159 struct vnode *a_dvp; 1160 struct vnode **a_vpp; 1161 struct componentname *a_cnp; 1162 struct vattr *a_vap; 1163 char *a_target; 1164 }*/ *ap = v; 1165 int error; 1166 1167 PUFFS_VNREQ(symlink); /* XXX: large structure */ 1168 1169 *ap->a_vpp = NULL; 1170 1171 puffs_makecn(&symlink_arg.pvnr_cn, ap->a_cnp); 1172 symlink_arg.pvnr_va = *ap->a_vap; 1173 (void)strlcpy(symlink_arg.pvnr_link, ap->a_target, 1174 sizeof(symlink_arg.pvnr_link)); 1175 1176 /* XXX: don't need to relock parent */ 1177 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), 1178 PUFFS_VN_SYMLINK, &symlink_arg, sizeof(symlink_arg), 1179 VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1180 if (error) 1181 goto out; 1182 1183 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 1184 symlink_arg.pvnr_newnode, ap->a_cnp, VLNK, 0); 1185 1186 out: 1187 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 1188 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 1189 vput(ap->a_dvp); 1190 return error; 1191 } 1192 1193 int 1194 puffs_readlink(void *v) 1195 { 1196 struct vop_readlink_args /* { 1197 const struct vnodeop_desc *a_desc; 1198 struct vnode *a_vp; 1199 struct uio *a_uio; 1200 kauth_cred_t a_cred; 1201 } */ *ap = v; 1202 int error; 1203 1204 PUFFS_VNREQ(readlink); 1205 1206 puffs_credcvt(&readlink_arg.pvnr_cred, ap->a_cred); 1207 readlink_arg.pvnr_linklen = sizeof(readlink_arg.pvnr_link); 1208 1209 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1210 PUFFS_VN_READLINK, &readlink_arg, sizeof(readlink_arg), 1211 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1212 if (error) 1213 return error; 1214 1215 readlink_arg.pvnr_link[readlink_arg.pvnr_linklen] = '\0'; 1216 return uiomove(&readlink_arg.pvnr_link, readlink_arg.pvnr_linklen, 1217 ap->a_uio); 1218 } 1219 1220 /* XXXXXXX: think about locking & userspace op delocking... */ 1221 int 1222 puffs_rename(void *v) 1223 { 1224 struct vop_rename_args /* { 1225 const struct vnodeop_desc *a_desc; 1226 struct vnode *a_fdvp; 1227 struct vnode *a_fvp; 1228 struct componentname *a_fcnp; 1229 struct vnode *a_tdvp; 1230 struct vnode *a_tvp; 1231 struct componentname *a_tcnp; 1232 }*/ *ap = v; 1233 int error; 1234 1235 PUFFS_VNREQ(rename); 1236 1237 /* 1238 * participate in the duck hunt 1239 * (I could do with some canard a la presse, so hopefully 1240 * this is succesful) 1241 */ 1242 KASSERT(ap->a_tdvp != ap->a_tvp); 1243 1244 if (ap->a_fvp->v_mount != ap->a_tdvp->v_mount) { 1245 error = EXDEV; 1246 goto out; 1247 } 1248 1249 rename_arg.pvnr_cookie_src = VPTOPNC(ap->a_fvp); 1250 rename_arg.pvnr_cookie_targdir = VPTOPNC(ap->a_tdvp); 1251 if (ap->a_tvp) 1252 rename_arg.pvnr_cookie_targ = VPTOPNC(ap->a_tvp); 1253 else 1254 rename_arg.pvnr_cookie_targ = NULL; 1255 puffs_makecn(&rename_arg.pvnr_cn_src, ap->a_fcnp); 1256 puffs_makecn(&rename_arg.pvnr_cn_targ, ap->a_tcnp); 1257 1258 error = puffs_vntouser(MPTOPUFFSMP(ap->a_fdvp->v_mount), 1259 PUFFS_VN_RENAME, &rename_arg, sizeof(rename_arg), 1260 VPTOPNC(ap->a_fdvp), NULL, NULL); 1261 1262 out: 1263 vput(ap->a_tdvp); 1264 if (ap->a_tvp != NULL) 1265 vput(ap->a_tvp); 1266 1267 vrele(ap->a_fdvp); 1268 vrele(ap->a_fvp); 1269 1270 return error; 1271 } 1272 1273 int 1274 puffs_read(void *v) 1275 { 1276 struct vop_read_args /* { 1277 const struct vnodeop_desc *a_desc; 1278 struct vnode *a_vp; 1279 struct uio *a_uio; 1280 int a_ioflag; 1281 kauth_cred_t a_cred; 1282 } */ *ap = v; 1283 struct puffs_vnreq_read *read_argp; 1284 struct puffs_mount *pmp; 1285 struct vnode *vp; 1286 struct uio *uio; 1287 void *win; 1288 size_t tomove, argsize; 1289 vsize_t bytelen; 1290 int error, ubcflags; 1291 1292 uio = ap->a_uio; 1293 vp = ap->a_vp; 1294 read_argp = NULL; 1295 error = 0; 1296 pmp = MPTOPUFFSMP(vp->v_mount); 1297 1298 /* std sanity */ 1299 if (uio->uio_resid == 0) 1300 return 0; 1301 if (uio->uio_offset < 0) 1302 return EINVAL; 1303 1304 if (vp->v_type == VREG && PUFFS_DOCACHE(pmp)) { 1305 const int advice = IO_ADV_DECODE(ap->a_ioflag); 1306 1307 ubcflags = 0; 1308 if (UBC_WANT_UNMAP(vp)) 1309 ubcflags = UBC_UNMAP; 1310 1311 while (uio->uio_resid > 0) { 1312 bytelen = MIN(uio->uio_resid, 1313 vp->v_size - uio->uio_offset); 1314 if (bytelen == 0) 1315 break; 1316 1317 win = ubc_alloc(&vp->v_uobj, uio->uio_offset, 1318 &bytelen, advice, UBC_READ); 1319 error = uiomove(win, bytelen, uio); 1320 ubc_release(win, ubcflags); 1321 if (error) 1322 break; 1323 } 1324 1325 if ((vp->v_mount->mnt_flag & MNT_NOATIME) == 0) 1326 puffs_updatenode(vp, PUFFS_UPDATEATIME); 1327 } else { 1328 /* 1329 * in case it's not a regular file or we're operating 1330 * uncached, do read in the old-fashioned style, 1331 * i.e. explicit read operations 1332 */ 1333 1334 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1335 argsize = sizeof(struct puffs_vnreq_read); 1336 read_argp = malloc(argsize, M_PUFFS, M_WAITOK | M_ZERO); 1337 1338 error = 0; 1339 while (uio->uio_resid > 0) { 1340 read_argp->pvnr_ioflag = ap->a_ioflag; 1341 read_argp->pvnr_resid = tomove; 1342 read_argp->pvnr_offset = uio->uio_offset; 1343 puffs_credcvt(&read_argp->pvnr_cred, ap->a_cred); 1344 1345 argsize = sizeof(struct puffs_vnreq_read); 1346 error = puffs_vntouser_adjbuf(pmp, PUFFS_VN_READ, 1347 (void **)&read_argp, &argsize, 1348 read_argp->pvnr_resid, VPTOPNC(ap->a_vp), 1349 ap->a_vp, NULL); 1350 if (error) 1351 break; 1352 1353 if (read_argp->pvnr_resid > tomove) { 1354 error = EINVAL; 1355 break; 1356 } 1357 1358 error = uiomove(read_argp->pvnr_data, 1359 tomove - read_argp->pvnr_resid, uio); 1360 1361 /* 1362 * in case the file is out of juice, resid from 1363 * userspace is != 0. and the error-case is 1364 * quite obvious 1365 */ 1366 if (error || read_argp->pvnr_resid) 1367 break; 1368 1369 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1370 } 1371 } 1372 1373 if (read_argp) 1374 free(read_argp, M_PUFFS); 1375 return error; 1376 } 1377 1378 int 1379 puffs_write(void *v) 1380 { 1381 struct vop_write_args /* { 1382 const struct vnodeop_desc *a_desc; 1383 struct vnode *a_vp; 1384 struct uio *a_uio; 1385 int a_ioflag; 1386 kauth_cred_t a_cred; 1387 }*/ *ap = v; 1388 struct puffs_vnreq_write *write_argp; 1389 struct puffs_mount *pmp; 1390 struct uio *uio; 1391 struct vnode *vp; 1392 void *win; 1393 size_t tomove, argsize; 1394 off_t oldoff, newoff, origoff; 1395 vsize_t bytelen; 1396 int error, uflags; 1397 int async, ubcflags; 1398 1399 vp = ap->a_vp; 1400 uio = ap->a_uio; 1401 async = vp->v_mount->mnt_flag & MNT_ASYNC; 1402 error = uflags = 0; 1403 write_argp = NULL; 1404 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1405 1406 if (vp->v_type == VREG && PUFFS_DOCACHE(pmp)) { 1407 ubcflags = 0; 1408 if (UBC_WANT_UNMAP(vp)) 1409 ubcflags = UBC_UNMAP; 1410 1411 /* 1412 * userspace *should* be allowed to control this, 1413 * but with UBC it's a bit unclear how to handle it 1414 */ 1415 if (ap->a_ioflag & IO_APPEND) 1416 uio->uio_offset = vp->v_size; 1417 1418 origoff = uio->uio_offset; 1419 while (uio->uio_resid > 0) { 1420 uflags |= PUFFS_UPDATECTIME; 1421 uflags |= PUFFS_UPDATEMTIME; 1422 oldoff = uio->uio_offset; 1423 bytelen = uio->uio_resid; 1424 1425 win = ubc_alloc(&vp->v_uobj, oldoff, &bytelen, 1426 UVM_ADV_NORMAL, UBC_WRITE); 1427 error = uiomove(win, bytelen, uio); 1428 1429 /* 1430 * did we grow the file? 1431 * XXX: should probably ask userspace to extend 1432 * it's idea of the *first* before growing it 1433 * here. Or we need some mechanism to "rollback" 1434 * in case putpages fails. 1435 */ 1436 newoff = oldoff + bytelen; 1437 if (vp->v_size < newoff) { 1438 uflags |= PUFFS_UPDATESIZE; 1439 uvm_vnp_setsize(vp, newoff); 1440 1441 /* 1442 * in case we couldn't copy data to the 1443 * window, zero it out so that we don't 1444 * have any random leftovers in there. 1445 */ 1446 if (error) 1447 memset(win, 0, bytelen); 1448 } 1449 1450 ubc_release(win, ubcflags); 1451 if (error) 1452 break; 1453 1454 /* ok, I really need to admit: why's this? */ 1455 if (!async && oldoff >> 16 != uio->uio_offset >> 16) { 1456 simple_lock(&vp->v_interlock); 1457 error = VOP_PUTPAGES(vp, oldoff & ~0xffff, 1458 uio->uio_offset & ~0xffff, PGO_CLEANIT); 1459 if (error) 1460 break; 1461 } 1462 } 1463 1464 if (error == 0 && ap->a_ioflag & IO_SYNC) { 1465 simple_lock(&vp->v_interlock); 1466 error = VOP_PUTPAGES(vp, trunc_page(origoff), 1467 round_page(uio->uio_offset), 1468 PGO_CLEANIT | PGO_SYNCIO); 1469 } 1470 1471 puffs_updatenode(vp, uflags); 1472 } else { 1473 /* tomove is non-increasing */ 1474 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1475 argsize = sizeof(struct puffs_vnreq_write) + tomove; 1476 write_argp = malloc(argsize, M_PUFFS, M_WAITOK | M_ZERO); 1477 1478 while (uio->uio_resid > 0) { 1479 write_argp->pvnr_ioflag = ap->a_ioflag; 1480 write_argp->pvnr_resid = tomove; 1481 write_argp->pvnr_offset = uio->uio_offset; 1482 puffs_credcvt(&write_argp->pvnr_cred, ap->a_cred); 1483 error = uiomove(write_argp->pvnr_data, tomove, uio); 1484 if (error) 1485 break; 1486 1487 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1488 PUFFS_VN_WRITE, write_argp, argsize, 1489 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1490 if (error) { 1491 /* restore uiomove */ 1492 uio->uio_resid += tomove; 1493 uio->uio_offset -= tomove; 1494 break; 1495 } 1496 if (write_argp->pvnr_resid > tomove) { 1497 /* 1498 * XXX: correct file size is a mystery, 1499 * we can only guess 1500 */ 1501 error = EINVAL; 1502 break; 1503 } 1504 1505 /* adjust file size */ 1506 if (vp->v_size < uio->uio_offset) 1507 uvm_vnp_setsize(vp, uio->uio_offset); 1508 1509 /* didn't move everything? bad userspace. bail */ 1510 if (write_argp->pvnr_resid != 0) { 1511 uio->uio_resid += write_argp->pvnr_resid; 1512 uio->uio_offset -= write_argp->pvnr_resid; 1513 error = EIO; 1514 break; 1515 } 1516 1517 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1518 } 1519 } 1520 1521 if (write_argp) 1522 free(write_argp, M_PUFFS); 1523 return error; 1524 } 1525 1526 static int puffs_fcnioctl(struct vop_ioctl_args * /*XXX*/, int); 1527 1528 #define FCNIOCTL_ARG_MAX 1<<16 1529 int 1530 puffs_fcnioctl(struct vop_ioctl_args *ap, int puffsop) 1531 { 1532 1533 /* currently not supported */ 1534 return EOPNOTSUPP; 1535 #if 0 1536 /* struct vop_ioctl_args { 1537 const struct vnodeop_desc *a_desc; 1538 struct vnode *a_vp; 1539 u_long a_command; 1540 void *a_data; 1541 int a_fflag; 1542 kauth_cred_t a_cred; 1543 struct lwp *a_l; 1544 }*ap = v; */ 1545 struct puffs_mount *pmp; 1546 struct puffs_sizepark pspark; 1547 void *kernbuf; 1548 size_t copylen; 1549 int error; 1550 1551 PUFFS_VNREQ(fcnioctl); 1552 1553 /* 1554 * Since this op gives the filesystem (almost) complete control on 1555 * how much it is allowed to copy from the calling process 1556 * address space, do not enable it by default, since it would 1557 * be a whopping security hole. 1558 */ 1559 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1560 if ((pmp->pmp_flags & PUFFS_KFLAG_ALLOWCTL) == 0) 1561 return EINVAL; /* only shoe that fits */ 1562 1563 /* fill in sizereq and store it */ 1564 pspark.pkso_reqid = puffs_getreqid(pmp); 1565 pspark.pkso_reqtype = PUFFS_SIZEOPREQ_BUF_IN; 1566 pspark.pkso_copybuf = ap->a_data; 1567 pspark.pkso_bufsize = FCNIOCTL_ARG_MAX; 1568 TAILQ_INSERT_TAIL(&pmp->pmp_req_sizepark, &pspark, pkso_entries); 1569 1570 /* then fill in actual request and shoot it off */ 1571 fcnioctl_arg.pvnr_command = ap->a_command; 1572 fcnioctl_arg.pvnr_fflag = ap->a_fflag; 1573 puffs_credcvt(&fcnioctl_arg.pvnr_cred, ap->a_cred); 1574 fcnioctl_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 1575 1576 error = puffs_vntouser_req(MPTOPUFFSMP(ap->a_vp->v_mount), puffsop, 1577 &fcnioctl_arg, sizeof(fcnioctl_arg), VPTOPNC(ap->a_vp), 1578 pspark.pkso_reqid, NULL, NULL); 1579 1580 /* if we don't need to copy data, we're done */ 1581 if (error || !fcnioctl_arg.pvnr_copyback) 1582 return error; 1583 1584 copylen = MIN(FCNIOCTL_ARG_MAX, fcnioctl_arg.pvnr_datalen); 1585 kernbuf = malloc(copylen, M_PUFFS, M_WAITOK); 1586 error = copyin(fcnioctl_arg.pvnr_data, kernbuf, copylen); 1587 if (error) 1588 goto out; 1589 error = copyout(kernbuf, ap->a_data, copylen); 1590 1591 out: 1592 free(kernbuf, M_PUFFS); 1593 return error; 1594 #endif 1595 } 1596 1597 int 1598 puffs_ioctl(void *v) 1599 { 1600 1601 return puffs_fcnioctl(v, PUFFS_VN_IOCTL); 1602 } 1603 1604 int 1605 puffs_fcntl(void *v) 1606 { 1607 1608 return puffs_fcnioctl(v, PUFFS_VN_FCNTL); 1609 } 1610 1611 int 1612 puffs_print(void *v) 1613 { 1614 struct vop_print_args /* { 1615 struct vnode *a_vp; 1616 } */ *ap = v; 1617 struct puffs_mount *pmp; 1618 struct vnode *vp = ap->a_vp; 1619 struct puffs_node *pn = vp->v_data; 1620 1621 PUFFS_VNREQ(print); 1622 1623 pmp = MPTOPUFFSMP(vp->v_mount); 1624 1625 /* kernel portion */ 1626 printf("tag VT_PUFFS, vnode %p, puffs node: %p,\n" 1627 " userspace cookie: %p\n", vp, pn, pn->pn_cookie); 1628 if (vp->v_type == VFIFO) 1629 fifo_printinfo(vp); 1630 lockmgr_printinfo(&vp->v_lock); 1631 1632 /* userspace portion */ 1633 if (EXISTSOP(pmp, PRINT)) 1634 puffs_vntouser(pmp, PUFFS_VN_PRINT, 1635 &print_arg, sizeof(print_arg), VPTOPNC(ap->a_vp), 1636 LOCKEDVP(ap->a_vp), NULL); 1637 1638 return 0; 1639 } 1640 1641 int 1642 puffs_pathconf(void *v) 1643 { 1644 struct vop_pathconf_args /* { 1645 const struct vnodeop_desc *a_desc; 1646 struct vnode *a_vp; 1647 int a_name; 1648 register_t *a_retval; 1649 } */ *ap = v; 1650 int error; 1651 1652 PUFFS_VNREQ(pathconf); 1653 1654 pathconf_arg.pvnr_name = ap->a_name; 1655 1656 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1657 PUFFS_VN_PATHCONF, &pathconf_arg, sizeof(pathconf_arg), 1658 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1659 if (error) 1660 return error; 1661 1662 *ap->a_retval = pathconf_arg.pvnr_retval; 1663 1664 return 0; 1665 } 1666 1667 int 1668 puffs_advlock(void *v) 1669 { 1670 struct vop_advlock_args /* { 1671 const struct vnodeop_desc *a_desc; 1672 struct vnode *a_vp; 1673 void *a_id; 1674 int a_op; 1675 struct flock *a_fl; 1676 int a_flags; 1677 } */ *ap = v; 1678 int error; 1679 1680 PUFFS_VNREQ(advlock); 1681 1682 error = copyin(ap->a_fl, &advlock_arg.pvnr_fl, sizeof(struct flock)); 1683 if (error) 1684 return error; 1685 advlock_arg.pvnr_id = ap->a_id; 1686 advlock_arg.pvnr_op = ap->a_op; 1687 advlock_arg.pvnr_flags = ap->a_flags; 1688 1689 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_ADVLOCK, 1690 &advlock_arg, sizeof(advlock_arg), VPTOPNC(ap->a_vp), NULL, NULL); 1691 } 1692 /* 1693 * This maps itself to PUFFS_VN_READ/WRITE for data transfer. 1694 */ 1695 int 1696 puffs_strategy(void *v) 1697 { 1698 struct vop_strategy_args /* { 1699 const struct vnodeop_desc *a_desc; 1700 struct vnode *a_vp; 1701 struct buf *a_bp; 1702 } */ *ap = v; 1703 struct puffs_mount *pmp; 1704 struct puffs_vnreq_read *read_argp = NULL; 1705 struct puffs_vnreq_write *write_argp = NULL; 1706 struct buf *bp; 1707 size_t argsize; 1708 size_t tomove, moved; 1709 int error; 1710 1711 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1712 bp = ap->a_bp; 1713 1714 if ((bp->b_flags & B_READ) && !EXISTSOP(pmp, READ)) 1715 return EOPNOTSUPP; 1716 if ((bp->b_flags & B_WRITE) && !EXISTSOP(pmp, WRITE)) 1717 return EOPNOTSUPP; 1718 1719 #ifdef DIAGNOSTIC 1720 if (bp->b_resid > pmp->pmp_req_maxsize - PUFFS_REQSTRUCT_MAX) 1721 panic("puffs_strategy: wildly inappropriate buf resid %d", 1722 bp->b_resid); 1723 #endif 1724 1725 if (bp->b_flags & B_READ) { 1726 argsize = sizeof(struct puffs_vnreq_read); 1727 read_argp = malloc(argsize, M_PUFFS, M_NOWAIT | M_ZERO); 1728 if (read_argp == NULL) { 1729 error = ENOMEM; 1730 goto out; 1731 } 1732 1733 tomove = PUFFS_TOMOVE(bp->b_resid, pmp); 1734 1735 read_argp->pvnr_ioflag = 0; 1736 read_argp->pvnr_resid = tomove; 1737 read_argp->pvnr_offset = bp->b_blkno << DEV_BSHIFT; 1738 puffs_credcvt(&read_argp->pvnr_cred, FSCRED); 1739 1740 error = puffs_vntouser_adjbuf(pmp, PUFFS_VN_READ, 1741 (void **)&read_argp, &argsize, 1742 read_argp->pvnr_resid, VPTOPNC(ap->a_vp), 1743 LOCKEDVP(ap->a_vp), NULL); 1744 1745 if (error) 1746 goto out; 1747 1748 if (read_argp->pvnr_resid > tomove) { 1749 error = EINVAL; 1750 goto out; 1751 } 1752 1753 moved = tomove - read_argp->pvnr_resid; 1754 1755 (void)memcpy(bp->b_data, read_argp->pvnr_data, moved); 1756 bp->b_resid -= moved; 1757 } else { 1758 argsize = sizeof(struct puffs_vnreq_write) + bp->b_bcount; 1759 write_argp = malloc(argsize, M_PUFFS, M_NOWAIT | M_ZERO); 1760 if (write_argp == NULL) { 1761 error = ENOMEM; 1762 goto out; 1763 } 1764 1765 tomove = PUFFS_TOMOVE(bp->b_resid, pmp); 1766 1767 write_argp->pvnr_ioflag = 0; 1768 write_argp->pvnr_resid = tomove; 1769 write_argp->pvnr_offset = bp->b_blkno << DEV_BSHIFT; 1770 puffs_credcvt(&write_argp->pvnr_cred, FSCRED); 1771 1772 (void)memcpy(&write_argp->pvnr_data, bp->b_data, tomove); 1773 1774 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1775 PUFFS_VN_WRITE, write_argp, argsize, 1776 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1777 if (error) 1778 goto out; 1779 1780 moved = write_argp->pvnr_resid - tomove; 1781 1782 if (write_argp->pvnr_resid > tomove) { 1783 error = EINVAL; 1784 goto out; 1785 } 1786 1787 bp->b_resid -= moved; 1788 if (write_argp->pvnr_resid != 0) 1789 error = EIO; 1790 } 1791 1792 out: 1793 if (read_argp) 1794 free(read_argp, M_PUFFS); 1795 if (write_argp) 1796 free(write_argp, M_PUFFS); 1797 1798 biodone(ap->a_bp); 1799 return error; 1800 } 1801 1802 int 1803 puffs_mmap(void *v) 1804 { 1805 struct vop_mmap_args /* { 1806 const struct vnodeop_desc *a_desc; 1807 struct vnode *a_vp; 1808 int a_fflags; 1809 kauth_cred_t a_cred; 1810 struct lwp *a_l; 1811 } */ *ap = v; 1812 struct puffs_mount *pmp; 1813 int error; 1814 1815 PUFFS_VNREQ(mmap); 1816 1817 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1818 1819 if (!PUFFS_DOCACHE(pmp)) 1820 return genfs_eopnotsupp(v); 1821 1822 if (EXISTSOP(pmp, MMAP)) { 1823 mmap_arg.pvnr_fflags = ap->a_fflags; 1824 puffs_credcvt(&mmap_arg.pvnr_cred, ap->a_cred); 1825 mmap_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 1826 1827 error = puffs_vntouser(pmp, PUFFS_VN_MMAP, 1828 &mmap_arg, sizeof(mmap_arg), 1829 VPTOPNC(ap->a_vp), NULL, NULL); 1830 } else { 1831 error = genfs_mmap(v); 1832 } 1833 1834 return error; 1835 } 1836 1837 1838 /* 1839 * The rest don't get a free trip to userspace and back, they 1840 * have to stay within the kernel. 1841 */ 1842 1843 /* 1844 * bmap doesn't really make any sense for puffs, so just 1:1 map it. 1845 * well, maybe somehow, somewhere, some day .... 1846 */ 1847 int 1848 puffs_bmap(void *v) 1849 { 1850 struct vop_bmap_args /* { 1851 const struct vnodeop_desc *a_desc; 1852 struct vnode *a_vp; 1853 daddr_t a_bn; 1854 struct vnode **a_vpp; 1855 daddr_t *a_bnp; 1856 int *a_runp; 1857 } */ *ap = v; 1858 struct puffs_mount *pmp; 1859 1860 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1861 1862 if (ap->a_vpp) 1863 *ap->a_vpp = ap->a_vp; 1864 if (ap->a_bnp) 1865 *ap->a_bnp = ap->a_bn; 1866 if (ap->a_runp) 1867 *ap->a_runp = pmp->pmp_req_maxsize - PUFFS_REQSTRUCT_MAX; 1868 1869 return 0; 1870 } 1871 1872 /* 1873 * moreXXX: yes, todo 1874 */ 1875 int 1876 puffs_lock(void *v) 1877 { 1878 struct vop_lock_args /* { 1879 struct vnode *a_vp; 1880 int a_flags; 1881 }*/ *ap = v; 1882 struct vnode *vp = ap->a_vp; 1883 1884 #if 0 1885 DPRINTF(("puffs_lock: lock %p, args 0x%x\n", vp, ap->a_flags)); 1886 #endif 1887 1888 return lockmgr(&vp->v_lock, ap->a_flags, &vp->v_interlock); 1889 } 1890 1891 int 1892 puffs_unlock(void *v) 1893 { 1894 struct vop_unlock_args /* { 1895 struct vnode *a_vp; 1896 int a_flags; 1897 } */ *ap = v; 1898 struct vnode *vp = ap->a_vp; 1899 1900 #if 0 1901 DPRINTF(("puffs_unlock: lock %p, args 0x%x\n", vp, ap->a_flags)); 1902 #endif 1903 1904 return lockmgr(&vp->v_lock, ap->a_flags | LK_RELEASE, &vp->v_interlock); 1905 } 1906 1907 int 1908 puffs_islocked(void *v) 1909 { 1910 struct vop_islocked_args *ap = v; 1911 int rv; 1912 1913 rv = lockstatus(&ap->a_vp->v_lock); 1914 return rv; 1915 } 1916 1917 int 1918 puffs_generic(void *v) 1919 { 1920 struct vop_generic_args *ap = v; 1921 1922 (void)ap; 1923 DPRINTF(("puffs_generic: ap->a_desc = %s\n", ap->a_desc->vdesc_name)); 1924 1925 return EOPNOTSUPP; 1926 } 1927 1928 1929 /* 1930 * spec & fifo. These call the micsfs spec and fifo vectors, but issue 1931 * FAF update information for the puffs node first. 1932 */ 1933 int 1934 puffs_spec_read(void *v) 1935 { 1936 struct vop_read_args /* { 1937 const struct vnodeop_desc *a_desc; 1938 struct vnode *a_vp; 1939 struct uio *a_uio; 1940 int a_ioflag; 1941 kauth_cred_t a_cred; 1942 } */ *ap = v; 1943 1944 puffs_updatenode(ap->a_vp, PUFFS_UPDATEATIME); 1945 return VOCALL(spec_vnodeop_p, VOFFSET(vop_read), v); 1946 } 1947 1948 int 1949 puffs_spec_write(void *v) 1950 { 1951 struct vop_write_args /* { 1952 const struct vnodeop_desc *a_desc; 1953 struct vnode *a_vp; 1954 struct uio *a_uio; 1955 int a_ioflag; 1956 kauth_cred_t a_cred; 1957 }*/ *ap = v; 1958 1959 puffs_updatenode(ap->a_vp, PUFFS_UPDATEMTIME); 1960 return VOCALL(spec_vnodeop_p, VOFFSET(vop_write), v); 1961 } 1962 1963 int 1964 puffs_fifo_read(void *v) 1965 { 1966 struct vop_read_args /* { 1967 const struct vnodeop_desc *a_desc; 1968 struct vnode *a_vp; 1969 struct uio *a_uio; 1970 int a_ioflag; 1971 kauth_cred_t a_cred; 1972 } */ *ap = v; 1973 1974 puffs_updatenode(ap->a_vp, PUFFS_UPDATEATIME); 1975 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), v); 1976 } 1977 1978 int 1979 puffs_fifo_write(void *v) 1980 { 1981 struct vop_write_args /* { 1982 const struct vnodeop_desc *a_desc; 1983 struct vnode *a_vp; 1984 struct uio *a_uio; 1985 int a_ioflag; 1986 kauth_cred_t a_cred; 1987 }*/ *ap = v; 1988 1989 puffs_updatenode(ap->a_vp, PUFFS_UPDATEMTIME); 1990 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), v); 1991 } 1992
Indexes created Tue Sep 30 11:09:46 GMT 2025