puffs_vnops.c revision 1.89
1 /* $NetBSD: puffs_vnops.c,v 1.89 2007/07/19 09:38:01 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2005, 2006, 2007 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 20 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: puffs_vnops.c,v 1.89 2007/07/19 09:38:01 pooka Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/fstrans.h> 37 #include <sys/malloc.h> 38 #include <sys/mount.h> 39 #include <sys/namei.h> 40 #include <sys/vnode.h> 41 #include <sys/proc.h> 42 43 #include <uvm/uvm.h> 44 45 #include <fs/puffs/puffs_msgif.h> 46 #include <fs/puffs/puffs_sys.h> 47 48 #include <miscfs/fifofs/fifo.h> 49 #include <miscfs/genfs/genfs.h> 50 #include <miscfs/specfs/specdev.h> 51 52 int puffs_lookup(void *); 53 int puffs_create(void *); 54 int puffs_access(void *); 55 int puffs_mknod(void *); 56 int puffs_open(void *); 57 int puffs_close(void *); 58 int puffs_getattr(void *); 59 int puffs_setattr(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 int puffs_getpages(void *); 84 85 int puffs_spec_read(void *); 86 int puffs_spec_write(void *); 87 int puffs_fifo_read(void *); 88 int puffs_fifo_write(void *); 89 90 int puffs_checkop(void *); 91 92 93 /* VOP_LEASE() not included */ 94 95 int puffs_generic(void *); 96 97 #if 0 98 #define puffs_lock genfs_lock 99 #define puffs_unlock genfs_unlock 100 #define puffs_islocked genfs_islocked 101 #else 102 int puffs_lock(void *); 103 int puffs_unlock(void *); 104 int puffs_islocked(void *); 105 #endif 106 107 int (**puffs_vnodeop_p)(void *); 108 const struct vnodeopv_entry_desc puffs_vnodeop_entries[] = { 109 { &vop_default_desc, vn_default_error }, 110 { &vop_lookup_desc, puffs_lookup }, /* REAL lookup */ 111 { &vop_create_desc, puffs_checkop }, /* create */ 112 { &vop_mknod_desc, puffs_checkop }, /* mknod */ 113 { &vop_open_desc, puffs_open }, /* REAL open */ 114 { &vop_close_desc, puffs_checkop }, /* close */ 115 { &vop_access_desc, puffs_access }, /* REAL access */ 116 { &vop_getattr_desc, puffs_checkop }, /* getattr */ 117 { &vop_setattr_desc, puffs_checkop }, /* setattr */ 118 { &vop_read_desc, puffs_checkop }, /* read */ 119 { &vop_write_desc, puffs_checkop }, /* write */ 120 { &vop_fcntl_desc, puffs_checkop }, /* fcntl */ 121 { &vop_ioctl_desc, puffs_checkop }, /* ioctl */ 122 { &vop_fsync_desc, puffs_fsync }, /* REAL fsync */ 123 { &vop_seek_desc, puffs_checkop }, /* seek */ 124 { &vop_remove_desc, puffs_checkop }, /* remove */ 125 { &vop_link_desc, puffs_checkop }, /* link */ 126 { &vop_rename_desc, puffs_checkop }, /* rename */ 127 { &vop_mkdir_desc, puffs_checkop }, /* mkdir */ 128 { &vop_rmdir_desc, puffs_checkop }, /* rmdir */ 129 { &vop_symlink_desc, puffs_checkop }, /* symlink */ 130 { &vop_readdir_desc, puffs_checkop }, /* readdir */ 131 { &vop_readlink_desc, puffs_checkop }, /* readlink */ 132 { &vop_getpages_desc, puffs_checkop }, /* getpages */ 133 { &vop_putpages_desc, genfs_putpages }, /* REAL putpages */ 134 { &vop_pathconf_desc, puffs_checkop }, /* pathconf */ 135 { &vop_advlock_desc, puffs_checkop }, /* advlock */ 136 { &vop_strategy_desc, puffs_strategy }, /* REAL strategy */ 137 { &vop_revoke_desc, genfs_revoke }, /* REAL revoke */ 138 { &vop_abortop_desc, genfs_abortop }, /* REAL abortop */ 139 { &vop_inactive_desc, puffs_inactive }, /* REAL inactive */ 140 { &vop_reclaim_desc, puffs_reclaim }, /* REAL reclaim */ 141 { &vop_lock_desc, puffs_lock }, /* REAL lock */ 142 { &vop_unlock_desc, puffs_unlock }, /* REAL unlock */ 143 { &vop_bmap_desc, puffs_bmap }, /* REAL bmap */ 144 { &vop_print_desc, puffs_print }, /* REAL print */ 145 { &vop_islocked_desc, puffs_islocked }, /* REAL islocked */ 146 { &vop_bwrite_desc, genfs_nullop }, /* REAL bwrite */ 147 { &vop_mmap_desc, puffs_mmap }, /* REAL mmap */ 148 { &vop_poll_desc, puffs_poll }, /* REAL poll */ 149 150 { &vop_kqfilter_desc, genfs_eopnotsupp }, /* kqfilter XXX */ 151 { NULL, NULL } 152 }; 153 const struct vnodeopv_desc puffs_vnodeop_opv_desc = 154 { &puffs_vnodeop_p, puffs_vnodeop_entries }; 155 156 157 int (**puffs_specop_p)(void *); 158 const struct vnodeopv_entry_desc puffs_specop_entries[] = { 159 { &vop_default_desc, vn_default_error }, 160 { &vop_lookup_desc, spec_lookup }, /* lookup, ENOTDIR */ 161 { &vop_create_desc, spec_create }, /* genfs_badop */ 162 { &vop_mknod_desc, spec_mknod }, /* genfs_badop */ 163 { &vop_open_desc, spec_open }, /* spec_open */ 164 { &vop_close_desc, spec_close }, /* spec_close */ 165 { &vop_access_desc, puffs_checkop }, /* access */ 166 { &vop_getattr_desc, puffs_checkop }, /* getattr */ 167 { &vop_setattr_desc, puffs_checkop }, /* setattr */ 168 { &vop_read_desc, puffs_spec_read }, /* update, read */ 169 { &vop_write_desc, puffs_spec_write }, /* update, write */ 170 { &vop_lease_desc, spec_lease_check }, /* genfs_nullop */ 171 { &vop_ioctl_desc, spec_ioctl }, /* spec_ioctl */ 172 { &vop_fcntl_desc, genfs_fcntl }, /* dummy */ 173 { &vop_poll_desc, spec_poll }, /* spec_poll */ 174 { &vop_kqfilter_desc, spec_kqfilter }, /* spec_kqfilter */ 175 { &vop_revoke_desc, spec_revoke }, /* genfs_revoke */ 176 { &vop_mmap_desc, spec_mmap }, /* spec_mmap */ 177 { &vop_fsync_desc, spec_fsync }, /* vflushbuf */ 178 { &vop_seek_desc, spec_seek }, /* genfs_nullop */ 179 { &vop_remove_desc, spec_remove }, /* genfs_badop */ 180 { &vop_link_desc, spec_link }, /* genfs_badop */ 181 { &vop_rename_desc, spec_rename }, /* genfs_badop */ 182 { &vop_mkdir_desc, spec_mkdir }, /* genfs_badop */ 183 { &vop_rmdir_desc, spec_rmdir }, /* genfs_badop */ 184 { &vop_symlink_desc, spec_symlink }, /* genfs_badop */ 185 { &vop_readdir_desc, spec_readdir }, /* genfs_badop */ 186 { &vop_readlink_desc, spec_readlink }, /* genfs_badop */ 187 { &vop_abortop_desc, spec_abortop }, /* genfs_badop */ 188 { &vop_inactive_desc, puffs_inactive }, /* REAL inactive */ 189 { &vop_reclaim_desc, puffs_reclaim }, /* REAL reclaim */ 190 { &vop_lock_desc, puffs_lock }, /* REAL lock */ 191 { &vop_unlock_desc, puffs_unlock }, /* REAL unlock */ 192 { &vop_bmap_desc, spec_bmap }, /* dummy */ 193 { &vop_strategy_desc, spec_strategy }, /* dev strategy */ 194 { &vop_print_desc, puffs_print }, /* REAL print */ 195 { &vop_islocked_desc, puffs_islocked }, /* REAL islocked */ 196 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 197 { &vop_advlock_desc, spec_advlock }, /* lf_advlock */ 198 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 199 { &vop_getpages_desc, spec_getpages }, /* genfs_getpages */ 200 { &vop_putpages_desc, spec_putpages }, /* genfs_putpages */ 201 #if 0 202 { &vop_openextattr_desc, _openextattr }, /* openextattr */ 203 { &vop_closeextattr_desc, _closeextattr }, /* closeextattr */ 204 { &vop_getextattr_desc, _getextattr }, /* getextattr */ 205 { &vop_setextattr_desc, _setextattr }, /* setextattr */ 206 { &vop_listextattr_desc, _listextattr }, /* listextattr */ 207 { &vop_deleteextattr_desc, _deleteextattr }, /* deleteextattr */ 208 #endif 209 { NULL, NULL } 210 }; 211 const struct vnodeopv_desc puffs_specop_opv_desc = 212 { &puffs_specop_p, puffs_specop_entries }; 213 214 215 int (**puffs_fifoop_p)(void *); 216 const struct vnodeopv_entry_desc puffs_fifoop_entries[] = { 217 { &vop_default_desc, vn_default_error }, 218 { &vop_lookup_desc, fifo_lookup }, /* lookup, ENOTDIR */ 219 { &vop_create_desc, fifo_create }, /* genfs_badop */ 220 { &vop_mknod_desc, fifo_mknod }, /* genfs_badop */ 221 { &vop_open_desc, fifo_open }, /* open */ 222 { &vop_close_desc, fifo_close }, /* close */ 223 { &vop_access_desc, puffs_checkop }, /* access */ 224 { &vop_getattr_desc, puffs_checkop }, /* getattr */ 225 { &vop_setattr_desc, puffs_checkop }, /* setattr */ 226 { &vop_read_desc, puffs_fifo_read }, /* read, update */ 227 { &vop_write_desc, puffs_fifo_write }, /* write, update */ 228 { &vop_lease_desc, fifo_lease_check }, /* genfs_nullop */ 229 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 230 { &vop_fcntl_desc, genfs_fcntl }, /* dummy */ 231 { &vop_poll_desc, fifo_poll }, /* poll */ 232 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 233 { &vop_revoke_desc, fifo_revoke }, /* genfs_revoke */ 234 { &vop_mmap_desc, fifo_mmap }, /* genfs_badop */ 235 { &vop_fsync_desc, fifo_fsync }, /* genfs_nullop*/ 236 { &vop_seek_desc, fifo_seek }, /* genfs_badop */ 237 { &vop_remove_desc, fifo_remove }, /* genfs_badop */ 238 { &vop_link_desc, fifo_link }, /* genfs_badop */ 239 { &vop_rename_desc, fifo_rename }, /* genfs_badop */ 240 { &vop_mkdir_desc, fifo_mkdir }, /* genfs_badop */ 241 { &vop_rmdir_desc, fifo_rmdir }, /* genfs_badop */ 242 { &vop_symlink_desc, fifo_symlink }, /* genfs_badop */ 243 { &vop_readdir_desc, fifo_readdir }, /* genfs_badop */ 244 { &vop_readlink_desc, fifo_readlink }, /* genfs_badop */ 245 { &vop_abortop_desc, fifo_abortop }, /* genfs_badop */ 246 { &vop_inactive_desc, puffs_inactive }, /* REAL inactive */ 247 { &vop_reclaim_desc, puffs_reclaim }, /* REAL reclaim */ 248 { &vop_lock_desc, puffs_lock }, /* REAL lock */ 249 { &vop_unlock_desc, puffs_unlock }, /* REAL unlock */ 250 { &vop_bmap_desc, fifo_bmap }, /* dummy */ 251 { &vop_strategy_desc, fifo_strategy }, /* genfs_badop */ 252 { &vop_print_desc, puffs_print }, /* REAL print */ 253 { &vop_islocked_desc, puffs_islocked }, /* REAL islocked */ 254 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 255 { &vop_advlock_desc, fifo_advlock }, /* genfs_einval */ 256 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 257 { &vop_putpages_desc, fifo_putpages }, /* genfs_null_putpages*/ 258 #if 0 259 { &vop_openextattr_desc, _openextattr }, /* openextattr */ 260 { &vop_closeextattr_desc, _closeextattr }, /* closeextattr */ 261 { &vop_getextattr_desc, _getextattr }, /* getextattr */ 262 { &vop_setextattr_desc, _setextattr }, /* setextattr */ 263 { &vop_listextattr_desc, _listextattr }, /* listextattr */ 264 { &vop_deleteextattr_desc, _deleteextattr }, /* deleteextattr */ 265 #endif 266 { NULL, NULL } 267 }; 268 const struct vnodeopv_desc puffs_fifoop_opv_desc = 269 { &puffs_fifoop_p, puffs_fifoop_entries }; 270 271 272 /* "real" vnode operations */ 273 int (**puffs_msgop_p)(void *); 274 const struct vnodeopv_entry_desc puffs_msgop_entries[] = { 275 { &vop_default_desc, vn_default_error }, 276 { &vop_create_desc, puffs_create }, /* create */ 277 { &vop_mknod_desc, puffs_mknod }, /* mknod */ 278 { &vop_open_desc, puffs_open }, /* open */ 279 { &vop_close_desc, puffs_close }, /* close */ 280 { &vop_access_desc, puffs_access }, /* access */ 281 { &vop_getattr_desc, puffs_getattr }, /* getattr */ 282 { &vop_setattr_desc, puffs_setattr }, /* setattr */ 283 { &vop_read_desc, puffs_read }, /* read */ 284 { &vop_write_desc, puffs_write }, /* write */ 285 { &vop_fcntl_desc, puffs_fcntl }, /* fcntl */ 286 { &vop_ioctl_desc, puffs_ioctl }, /* ioctl */ 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, puffs_getpages }, /* getpages */ 301 { NULL, NULL } 302 }; 303 const struct vnodeopv_desc puffs_msgop_opv_desc = 304 { &puffs_msgop_p, puffs_msgop_entries }; 305 306 307 #define ERROUT(err) \ 308 do { \ 309 error = err; \ 310 goto out; \ 311 } while (/*CONSTCOND*/0) 312 313 /* 314 * This is a generic vnode operation handler. It checks if the necessary 315 * operations for the called vnode operation are implemented by userspace 316 * and either returns a dummy return value or proceeds to call the real 317 * vnode operation from puffs_msgop_v. 318 * 319 * XXX: this should described elsewhere and autogenerated, the complexity 320 * of the vnode operations vectors and their interrelationships is also 321 * getting a bit out of hand. Another problem is that we need this same 322 * information in the fs server code, so keeping the two in sync manually 323 * is not a viable (long term) plan. 324 */ 325 326 /* not supported, handle locking protocol */ 327 #define CHECKOP_NOTSUPP(op) \ 328 case VOP_##op##_DESCOFFSET: \ 329 if (pmp->pmp_vnopmask[PUFFS_VN_##op] == 0) \ 330 return genfs_eopnotsupp(v); \ 331 break 332 333 /* always succeed, no locking */ 334 #define CHECKOP_SUCCESS(op) \ 335 case VOP_##op##_DESCOFFSET: \ 336 if (pmp->pmp_vnopmask[PUFFS_VN_##op] == 0) \ 337 return 0; \ 338 break 339 340 int 341 puffs_checkop(void *v) 342 { 343 struct vop_generic_args /* { 344 struct vnodeop_desc *a_desc; 345 spooky mystery contents; 346 } */ *ap = v; 347 struct vnodeop_desc *desc = ap->a_desc; 348 struct puffs_mount *pmp; 349 struct vnode *vp; 350 int offset, rv; 351 352 offset = ap->a_desc->vdesc_vp_offsets[0]; 353 #ifdef DIAGNOSTIC 354 if (offset == VDESC_NO_OFFSET) 355 panic("puffs_checkop: no vnode, why did you call me?"); 356 #endif 357 vp = *VOPARG_OFFSETTO(struct vnode **, offset, ap); 358 pmp = MPTOPUFFSMP(vp->v_mount); 359 360 DPRINTF_VERBOSE(("checkop call %s (%d), vp %p\n", 361 ap->a_desc->vdesc_name, ap->a_desc->vdesc_offset, vp)); 362 363 if (!ALLOPS(pmp)) { 364 switch (desc->vdesc_offset) { 365 CHECKOP_NOTSUPP(CREATE); 366 CHECKOP_NOTSUPP(MKNOD); 367 CHECKOP_NOTSUPP(GETATTR); 368 CHECKOP_NOTSUPP(SETATTR); 369 CHECKOP_NOTSUPP(READ); 370 CHECKOP_NOTSUPP(WRITE); 371 CHECKOP_NOTSUPP(FCNTL); 372 CHECKOP_NOTSUPP(IOCTL); 373 CHECKOP_NOTSUPP(REMOVE); 374 CHECKOP_NOTSUPP(LINK); 375 CHECKOP_NOTSUPP(RENAME); 376 CHECKOP_NOTSUPP(MKDIR); 377 CHECKOP_NOTSUPP(RMDIR); 378 CHECKOP_NOTSUPP(SYMLINK); 379 CHECKOP_NOTSUPP(READDIR); 380 CHECKOP_NOTSUPP(READLINK); 381 CHECKOP_NOTSUPP(PRINT); 382 CHECKOP_NOTSUPP(PATHCONF); 383 CHECKOP_NOTSUPP(ADVLOCK); 384 385 CHECKOP_SUCCESS(ACCESS); 386 CHECKOP_SUCCESS(CLOSE); 387 CHECKOP_SUCCESS(SEEK); 388 389 case VOP_GETPAGES_DESCOFFSET: 390 if (!EXISTSOP(pmp, READ)) 391 return genfs_eopnotsupp(v); 392 break; 393 394 default: 395 panic("puffs_checkop: unhandled vnop %d", 396 desc->vdesc_offset); 397 } 398 } 399 400 rv = VOCALL(puffs_msgop_p, ap->a_desc->vdesc_offset, v); 401 402 DPRINTF_VERBOSE(("checkop return %s (%d), vp %p: %d\n", 403 ap->a_desc->vdesc_name, ap->a_desc->vdesc_offset, vp, rv)); 404 405 return rv; 406 } 407 408 409 int 410 puffs_lookup(void *v) 411 { 412 struct vop_lookup_args /* { 413 const struct vnodeop_desc *a_desc; 414 struct vnode *a_dvp; 415 struct vnode **a_vpp; 416 struct componentname *a_cnp; 417 } */ *ap = v; 418 struct puffs_mount *pmp; 419 struct componentname *cnp; 420 struct vnode *vp, *dvp; 421 struct puffs_node *dpn; 422 int isdot; 423 int error; 424 425 PUFFS_VNREQ(lookup); 426 427 pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 428 cnp = ap->a_cnp; 429 dvp = ap->a_dvp; 430 *ap->a_vpp = NULL; 431 432 /* first things first: check access */ 433 error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, cnp->cn_lwp); 434 if (error) 435 return error; 436 437 isdot = cnp->cn_namelen == 1 && *cnp->cn_nameptr == '.'; 438 439 DPRINTF(("puffs_lookup: \"%s\", parent vnode %p, op: %lx\n", 440 cnp->cn_nameptr, dvp, cnp->cn_nameiop)); 441 442 /* 443 * Check if someone fed it into the cache 444 */ 445 if (PUFFS_USE_NAMECACHE(pmp)) { 446 error = cache_lookup(dvp, ap->a_vpp, cnp); 447 448 if (error >= 0) 449 return error; 450 } 451 452 if (isdot) { 453 vp = ap->a_dvp; 454 vref(vp); 455 *ap->a_vpp = vp; 456 return 0; 457 } 458 459 puffs_makecn(&lookup_arg.pvnr_cn, &lookup_arg.pvnr_cn_cred, 460 &lookup_arg.pvnr_cn_cid, cnp, PUFFS_USE_FULLPNBUF(pmp)); 461 462 if (cnp->cn_flags & ISDOTDOT) 463 VOP_UNLOCK(dvp, 0); 464 465 error = puffs_vntouser(pmp, PUFFS_VN_LOOKUP, 466 &lookup_arg, sizeof(lookup_arg), 0, dvp, NULL); 467 DPRINTF(("puffs_lookup: return of the userspace, part %d\n", error)); 468 469 /* 470 * In case of error, there is no new vnode to play with, so be 471 * happy with the NULL value given to vpp in the beginning. 472 * Also, check if this really was an error or the target was not 473 * present. Either treat it as a non-error for CREATE/RENAME or 474 * enter the component into the negative name cache (if desired). 475 */ 476 if (error) { 477 if (error == ENOENT) { 478 if ((cnp->cn_flags & ISLASTCN) 479 && (cnp->cn_nameiop == CREATE 480 || cnp->cn_nameiop == RENAME)) { 481 cnp->cn_flags |= SAVENAME; 482 error = EJUSTRETURN; 483 } else { 484 if ((cnp->cn_flags & MAKEENTRY) 485 && PUFFS_USE_NAMECACHE(pmp)) 486 cache_enter(dvp, NULL, cnp); 487 } 488 } else if (error < 0) { 489 error = EINVAL; 490 } 491 goto out; 492 } 493 494 /* 495 * Check that we don't get our parent node back, that would cause 496 * a pretty obvious deadlock. 497 */ 498 dpn = dvp->v_data; 499 if (lookup_arg.pvnr_newnode == dpn->pn_cookie) { 500 error = EINVAL; 501 goto out; 502 } 503 504 /* XXX: race here */ 505 /* XXX2: this check for node existence twice */ 506 error = puffs_pnode2vnode(pmp, lookup_arg.pvnr_newnode, 1, &vp); 507 if (error) { 508 error = puffs_getvnode(dvp->v_mount, 509 lookup_arg.pvnr_newnode, lookup_arg.pvnr_vtype, 510 lookup_arg.pvnr_size, lookup_arg.pvnr_rdev, &vp); 511 if (error) { 512 goto out; 513 } 514 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 515 } 516 *ap->a_vpp = vp; 517 518 if ((cnp->cn_flags & MAKEENTRY) != 0 && PUFFS_USE_NAMECACHE(pmp)) 519 cache_enter(dvp, vp, cnp); 520 521 /* XXX */ 522 if ((lookup_arg.pvnr_cn.pkcn_flags & REQUIREDIR) == 0) 523 cnp->cn_flags &= ~REQUIREDIR; 524 if (lookup_arg.pvnr_cn.pkcn_consume) 525 cnp->cn_consume = MIN(lookup_arg.pvnr_cn.pkcn_consume, 526 strlen(cnp->cn_nameptr) - cnp->cn_namelen); 527 528 out: 529 if (cnp->cn_flags & ISDOTDOT) 530 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 531 532 DPRINTF(("puffs_lookup: returning %d %p\n", error, *ap->a_vpp)); 533 return error; 534 } 535 536 int 537 puffs_create(void *v) 538 { 539 struct vop_create_args /* { 540 const struct vnodeop_desc *a_desc; 541 struct vnode *a_dvp; 542 struct vnode **a_vpp; 543 struct componentname *a_cnp; 544 struct vattr *a_vap; 545 } */ *ap = v; 546 struct puffs_mount *pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 547 int error; 548 549 PUFFS_VNREQ(create); 550 551 DPRINTF(("puffs_create: dvp %p, cnp: %s\n", 552 ap->a_dvp, ap->a_cnp->cn_nameptr)); 553 554 puffs_makecn(&create_arg.pvnr_cn, &create_arg.pvnr_cn_cred, 555 &create_arg.pvnr_cn_cid, ap->a_cnp, PUFFS_USE_FULLPNBUF(pmp)); 556 create_arg.pvnr_va = *ap->a_vap; 557 558 error = puffs_vntouser(pmp, PUFFS_VN_CREATE, 559 &create_arg, sizeof(create_arg), 0, ap->a_dvp, NULL); 560 if (error) 561 goto out; 562 563 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 564 create_arg.pvnr_newnode, ap->a_cnp, ap->a_vap->va_type, 0); 565 /* XXX: in case of error, need to uncommit userspace transaction */ 566 567 out: 568 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 569 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 570 vput(ap->a_dvp); 571 572 DPRINTF(("puffs_create: return %d\n", error)); 573 return error; 574 } 575 576 int 577 puffs_mknod(void *v) 578 { 579 struct vop_mknod_args /* { 580 const struct vnodeop_desc *a_desc; 581 struct vnode *a_dvp; 582 struct vnode **a_vpp; 583 struct componentname *a_cnp; 584 struct vattr *a_vap; 585 } */ *ap = v; 586 struct puffs_mount *pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 587 int error; 588 589 PUFFS_VNREQ(mknod); 590 591 puffs_makecn(&mknod_arg.pvnr_cn, &mknod_arg.pvnr_cn_cred, 592 &mknod_arg.pvnr_cn_cid, ap->a_cnp, PUFFS_USE_FULLPNBUF(pmp)); 593 mknod_arg.pvnr_va = *ap->a_vap; 594 595 error = puffs_vntouser(pmp, PUFFS_VN_MKNOD, 596 &mknod_arg, sizeof(mknod_arg), 0, ap->a_dvp, NULL); 597 if (error) 598 goto out; 599 600 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 601 mknod_arg.pvnr_newnode, ap->a_cnp, ap->a_vap->va_type, 602 ap->a_vap->va_rdev); 603 604 out: 605 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 606 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 607 vput(ap->a_dvp); 608 return error; 609 } 610 611 int 612 puffs_open(void *v) 613 { 614 struct vop_open_args /* { 615 const struct vnodeop_desc *a_desc; 616 struct vnode *a_vp; 617 int a_mode; 618 kauth_cred_t a_cred; 619 struct lwp *a_l; 620 } */ *ap = v; 621 struct vnode *vp = ap->a_vp; 622 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 623 int mode = ap->a_mode; 624 int error; 625 626 PUFFS_VNREQ(open); 627 DPRINTF(("puffs_open: vp %p, mode 0x%x\n", vp, mode)); 628 629 if (vp->v_type == VREG && mode & FWRITE && !EXISTSOP(pmp, WRITE)) 630 ERROUT(EROFS); 631 632 if (!EXISTSOP(pmp, OPEN)) 633 ERROUT(0); 634 635 open_arg.pvnr_mode = mode; 636 puffs_credcvt(&open_arg.pvnr_cred, ap->a_cred); 637 puffs_cidcvt(&open_arg.pvnr_cid, ap->a_l); 638 639 error = puffs_vntouser(MPTOPUFFSMP(vp->v_mount), PUFFS_VN_OPEN, 640 &open_arg, sizeof(open_arg), 0, vp, NULL); 641 642 out: 643 DPRINTF(("puffs_open: returning %d\n", error)); 644 return error; 645 } 646 647 int 648 puffs_close(void *v) 649 { 650 struct vop_close_args /* { 651 const struct vnodeop_desc *a_desc; 652 struct vnode *a_vp; 653 int a_fflag; 654 kauth_cred_t a_cred; 655 struct lwp *a_l; 656 } */ *ap = v; 657 struct puffs_vnreq_close *close_argp; 658 659 close_argp = malloc(sizeof(struct puffs_vnreq_close), 660 M_PUFFS, M_WAITOK | M_ZERO); 661 close_argp->pvnr_fflag = ap->a_fflag; 662 puffs_credcvt(&close_argp->pvnr_cred, ap->a_cred); 663 puffs_cidcvt(&close_argp->pvnr_cid, ap->a_l); 664 665 puffs_vntouser_faf(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_CLOSE, 666 close_argp, sizeof(struct puffs_vnreq_close), ap->a_vp); 667 668 return 0; 669 } 670 671 int 672 puffs_access(void *v) 673 { 674 struct vop_access_args /* { 675 const struct vnodeop_desc *a_desc; 676 struct vnode *a_vp; 677 int a_mode; 678 kauth_cred_t a_cred; 679 struct lwp *a_l; 680 } */ *ap = v; 681 struct vnode *vp = ap->a_vp; 682 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 683 int mode = ap->a_mode; 684 685 PUFFS_VNREQ(access); 686 687 if (vp->v_type == VREG && mode & VWRITE && !EXISTSOP(pmp, WRITE)) 688 return EROFS; 689 690 if (!EXISTSOP(pmp, ACCESS)) 691 return 0; 692 693 access_arg.pvnr_mode = ap->a_mode; 694 puffs_credcvt(&access_arg.pvnr_cred, ap->a_cred); 695 puffs_cidcvt(&access_arg.pvnr_cid, ap->a_l); 696 697 return puffs_vntouser(MPTOPUFFSMP(vp->v_mount), PUFFS_VN_ACCESS, 698 &access_arg, sizeof(access_arg), 0, vp, NULL); 699 } 700 701 int 702 puffs_getattr(void *v) 703 { 704 struct vop_getattr_args /* { 705 const struct vnodeop_desc *a_desc; 706 struct vnode *a_vp; 707 struct vattr *a_vap; 708 kauth_cred_t a_cred; 709 struct lwp *a_l; 710 } */ *ap = v; 711 struct mount *mp; 712 struct vnode *vp; 713 struct vattr *vap, *rvap; 714 struct puffs_node *pn; 715 int error; 716 717 PUFFS_VNREQ(getattr); 718 719 vp = ap->a_vp; 720 mp = vp->v_mount; 721 vap = ap->a_vap; 722 723 vattr_null(&getattr_arg.pvnr_va); 724 puffs_credcvt(&getattr_arg.pvnr_cred, ap->a_cred); 725 puffs_cidcvt(&getattr_arg.pvnr_cid, ap->a_l); 726 727 error = puffs_vntouser(MPTOPUFFSMP(vp->v_mount), PUFFS_VN_GETATTR, 728 &getattr_arg, sizeof(getattr_arg), 0, vp, NULL); 729 if (error) 730 return error; 731 732 rvap = &getattr_arg.pvnr_va; 733 /* 734 * Don't listen to the file server regarding special device 735 * size info, the file server doesn't know anything about them. 736 */ 737 if (vp->v_type == VBLK || vp->v_type == VCHR) 738 rvap->va_size = vp->v_size; 739 740 /* Ditto for blocksize (ufs comment: this doesn't belong here) */ 741 if (vp->v_type == VBLK) 742 rvap->va_blocksize = BLKDEV_IOSIZE; 743 else if (vp->v_type == VCHR) 744 rvap->va_blocksize = MAXBSIZE; 745 746 (void) memcpy(vap, rvap, sizeof(struct vattr)); 747 vap->va_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 748 749 pn = VPTOPP(vp); 750 if (pn->pn_stat & PNODE_METACACHE_ATIME) 751 vap->va_atime = pn->pn_mc_atime; 752 if (pn->pn_stat & PNODE_METACACHE_CTIME) 753 vap->va_ctime = pn->pn_mc_ctime; 754 if (pn->pn_stat & PNODE_METACACHE_MTIME) 755 vap->va_mtime = pn->pn_mc_mtime; 756 if (pn->pn_stat & PNODE_METACACHE_SIZE) { 757 vap->va_size = pn->pn_mc_size; 758 } else { 759 if (rvap->va_size != VNOVAL 760 && vp->v_type != VBLK && vp->v_type != VCHR) 761 uvm_vnp_setsize(vp, rvap->va_size); 762 } 763 764 return 0; 765 } 766 767 int 768 puffs_setattr(void *v) 769 { 770 struct vop_getattr_args /* { 771 const struct vnodeop_desc *a_desc; 772 struct vnode *a_vp; 773 struct vattr *a_vap; 774 kauth_cred_t a_cred; 775 struct lwp *a_l; 776 } */ *ap = v; 777 int error; 778 struct vattr *vap = ap->a_vap; 779 struct puffs_node *pn = ap->a_vp->v_data; 780 781 PUFFS_VNREQ(setattr); 782 783 /* 784 * Flush metacache first. If we are called with some explicit 785 * parameters, treat them as information overriding metacache 786 * information. 787 */ 788 if (pn->pn_stat & PNODE_METACACHE_MASK) { 789 if ((pn->pn_stat & PNODE_METACACHE_ATIME) 790 && vap->va_atime.tv_sec == VNOVAL) 791 vap->va_atime = pn->pn_mc_atime; 792 if ((pn->pn_stat & PNODE_METACACHE_CTIME) 793 && vap->va_ctime.tv_sec == VNOVAL) 794 vap->va_ctime = pn->pn_mc_ctime; 795 if ((pn->pn_stat & PNODE_METACACHE_MTIME) 796 && vap->va_mtime.tv_sec == VNOVAL) 797 vap->va_mtime = pn->pn_mc_mtime; 798 if ((pn->pn_stat & PNODE_METACACHE_SIZE) 799 && vap->va_size == VNOVAL) 800 vap->va_size = pn->pn_mc_size; 801 802 pn->pn_stat &= ~PNODE_METACACHE_MASK; 803 } 804 805 (void)memcpy(&setattr_arg.pvnr_va, vap, sizeof(struct vattr)); 806 puffs_credcvt(&setattr_arg.pvnr_cred, ap->a_cred); 807 puffs_cidcvt(&setattr_arg.pvnr_cid, ap->a_l); 808 809 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_SETATTR, 810 &setattr_arg, sizeof(setattr_arg), 0, ap->a_vp, NULL); 811 if (error) 812 return error; 813 814 if (vap->va_size != VNOVAL) 815 uvm_vnp_setsize(ap->a_vp, vap->va_size); 816 817 return 0; 818 } 819 820 int 821 puffs_inactive(void *v) 822 { 823 struct vop_inactive_args /* { 824 const struct vnodeop_desc *a_desc; 825 struct vnode *a_vp; 826 struct lwp *a_l; 827 } */ *ap = v; 828 struct puffs_mount *pmp; 829 struct puffs_node *pnode; 830 int rv, call; 831 832 PUFFS_VNREQ(inactive); 833 834 /* 835 * XXX: think about this after we really start unlocking 836 * when going to userspace 837 */ 838 pnode = ap->a_vp->v_data; 839 840 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 841 842 puffs_cidcvt(&inactive_arg.pvnr_cid, ap->a_l); 843 844 if (EXISTSOP(pmp, INACTIVE)) 845 if (pmp->pmp_flags & PUFFS_KFLAG_IAONDEMAND) 846 if ((pnode->pn_stat & PNODE_DOINACT) || ALLOPS(pmp)) 847 call = 1; 848 else 849 call = 0; 850 else 851 call = 1; 852 else 853 call = 0; 854 855 if (call) 856 rv = puffs_vntouser(pmp, PUFFS_VN_INACTIVE, 857 &inactive_arg, sizeof(inactive_arg), 0, ap->a_vp, NULL); 858 else 859 rv = 1; /* see below */ 860 pnode->pn_stat &= ~PNODE_DOINACT; 861 862 VOP_UNLOCK(ap->a_vp, 0); 863 864 /* 865 * file server thinks it's gone? then don't be afraid care, 866 * node's life was already all it would ever be 867 */ 868 if (pnode->pn_stat & PNODE_NOREFS) { 869 pnode->pn_stat |= PNODE_DYING; 870 vrecycle(ap->a_vp, NULL, ap->a_l); 871 } 872 873 return 0; 874 } 875 876 /* 877 * always FAF, we don't really care if the server wants to fail to 878 * reclaim the node or not 879 */ 880 int 881 puffs_reclaim(void *v) 882 { 883 struct vop_reclaim_args /* { 884 const struct vnodeop_desc *a_desc; 885 struct vnode *a_vp; 886 struct lwp *a_l; 887 } */ *ap = v; 888 struct puffs_mount *pmp; 889 struct puffs_vnreq_reclaim *reclaim_argp; 890 891 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 892 893 /* 894 * first things first: check if someone is trying to reclaim the 895 * root vnode. do not allow that to travel to userspace. 896 * Note that we don't need to take the lock similarly to 897 * puffs_root(), since there is only one of us. 898 */ 899 if (ap->a_vp->v_flag & VROOT) { 900 mutex_enter(&pmp->pmp_lock); 901 KASSERT(pmp->pmp_root != NULL); 902 pmp->pmp_root = NULL; 903 mutex_exit(&pmp->pmp_lock); 904 goto out; 905 } 906 907 if (!EXISTSOP(pmp, RECLAIM)) 908 goto out; 909 910 reclaim_argp = malloc(sizeof(struct puffs_vnreq_reclaim), 911 M_PUFFS, M_WAITOK | M_ZERO); 912 puffs_cidcvt(&reclaim_argp->pvnr_cid, ap->a_l); 913 914 puffs_vntouser_faf(pmp, PUFFS_VN_RECLAIM, 915 reclaim_argp, sizeof(struct puffs_vnreq_reclaim), ap->a_vp); 916 917 out: 918 if (PUFFS_USE_NAMECACHE(pmp)) 919 cache_purge(ap->a_vp); 920 puffs_putvnode(ap->a_vp); 921 922 return 0; 923 } 924 925 #define CSIZE sizeof(**ap->a_cookies) 926 int 927 puffs_readdir(void *v) 928 { 929 struct vop_readdir_args /* { 930 const struct vnodeop_desc *a_desc; 931 struct vnode *a_vp; 932 struct uio *a_uio; 933 kauth_cred_t a_cred; 934 int *a_eofflag; 935 off_t **a_cookies; 936 int *a_ncookies; 937 } */ *ap = v; 938 struct puffs_mount *pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 939 struct puffs_vnreq_readdir *readdir_argp; 940 size_t argsize, tomove, cookiemem, cookiesmax; 941 struct uio *uio = ap->a_uio; 942 size_t howmuch, resid; 943 int error; 944 945 /* 946 * ok, so we need: resid + cookiemem = maxreq 947 * => resid + cookiesize * (resid/minsize) = maxreq 948 * => resid + cookiesize/minsize * resid = maxreq 949 * => (cookiesize/minsize + 1) * resid = maxreq 950 * => resid = maxreq / (cookiesize/minsize + 1) 951 * 952 * Since cookiesize <= minsize and we're not very big on floats, 953 * we approximate that to be 1. Therefore: 954 * 955 * resid = maxreq / 2; 956 * 957 * Well, at least we didn't have to use differential equations 958 * or the Gram-Schmidt process. 959 * 960 * (yes, I'm very afraid of this) 961 */ 962 KASSERT(CSIZE <= _DIRENT_MINSIZE((struct dirent *)0)); 963 964 if (ap->a_cookies) { 965 KASSERT(ap->a_ncookies != NULL); 966 if (pmp->pmp_args.pa_fhsize == 0) 967 return EOPNOTSUPP; 968 resid = PUFFS_TOMOVE(uio->uio_resid, pmp) / 2; 969 cookiesmax = resid/_DIRENT_MINSIZE((struct dirent *)0); 970 cookiemem = ALIGN(cookiesmax*CSIZE); /* play safe */ 971 } else { 972 resid = PUFFS_TOMOVE(uio->uio_resid, pmp); 973 cookiesmax = 0; 974 cookiemem = 0; 975 } 976 977 argsize = sizeof(struct puffs_vnreq_readdir); 978 tomove = resid + cookiemem; 979 readdir_argp = malloc(argsize + tomove, M_PUFFS, M_ZERO | M_WAITOK); 980 981 puffs_credcvt(&readdir_argp->pvnr_cred, ap->a_cred); 982 readdir_argp->pvnr_offset = uio->uio_offset; 983 readdir_argp->pvnr_resid = resid; 984 readdir_argp->pvnr_ncookies = cookiesmax; 985 readdir_argp->pvnr_eofflag = 0; 986 readdir_argp->pvnr_dentoff = cookiemem; 987 988 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 989 PUFFS_VN_READDIR, readdir_argp, argsize, tomove, 990 ap->a_vp, NULL); 991 if (error) 992 goto out; 993 994 /* userspace is cheating? */ 995 if (readdir_argp->pvnr_resid > resid 996 || readdir_argp->pvnr_ncookies > cookiesmax) 997 ERROUT(EINVAL); 998 999 /* check eof */ 1000 if (readdir_argp->pvnr_eofflag) 1001 *ap->a_eofflag = 1; 1002 1003 /* bouncy-wouncy with the directory data */ 1004 howmuch = resid - readdir_argp->pvnr_resid; 1005 1006 /* force eof if no data was returned (getcwd() needs this) */ 1007 if (howmuch == 0) { 1008 *ap->a_eofflag = 1; 1009 goto out; 1010 } 1011 1012 error = uiomove(readdir_argp->pvnr_data + cookiemem, howmuch, uio); 1013 if (error) 1014 goto out; 1015 1016 /* provide cookies to caller if so desired */ 1017 if (ap->a_cookies) { 1018 *ap->a_cookies = malloc(readdir_argp->pvnr_ncookies*CSIZE, 1019 M_TEMP, M_WAITOK); 1020 *ap->a_ncookies = readdir_argp->pvnr_ncookies; 1021 memcpy(*ap->a_cookies, readdir_argp->pvnr_data, 1022 *ap->a_ncookies*CSIZE); 1023 } 1024 1025 /* next readdir starts here */ 1026 uio->uio_offset = readdir_argp->pvnr_offset; 1027 1028 out: 1029 free(readdir_argp, M_PUFFS); 1030 return error; 1031 } 1032 #undef CSIZE 1033 1034 /* 1035 * poll works by consuming the bitmask in pn_revents. If there are 1036 * events available, poll returns immediately. If not, it issues a 1037 * poll to userspace, selrecords itself and returns with no available 1038 * events. When the file server returns, it executes puffs_parkdone_poll(), 1039 * where available events are added to the bitmask. selnotify() is 1040 * then also executed by that function causing us to enter here again 1041 * and hopefully find the missing bits (unless someone got them first, 1042 * in which case it starts all over again). 1043 */ 1044 int 1045 puffs_poll(void *v) 1046 { 1047 struct vop_poll_args /* { 1048 const struct vnodeop_desc *a_desc; 1049 struct vnode *a_vp; 1050 int a_events; 1051 struct lwp *a_l; 1052 }*/ *ap = v; 1053 struct vnode *vp = ap->a_vp; 1054 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 1055 struct puffs_vnreq_poll *poll_argp; 1056 struct puffs_node *pn = vp->v_data; 1057 int events; 1058 1059 if (EXISTSOP(pmp, POLL)) { 1060 mutex_enter(&pn->pn_mtx); 1061 events = pn->pn_revents & ap->a_events; 1062 if (events & ap->a_events) { 1063 pn->pn_revents &= ~ap->a_events; 1064 mutex_exit(&pn->pn_mtx); 1065 1066 return events; 1067 } else { 1068 puffs_referencenode(pn); 1069 mutex_exit(&pn->pn_mtx); 1070 1071 /* freed in puffs_parkdone_poll */ 1072 poll_argp = malloc(sizeof(struct puffs_vnreq_poll), 1073 M_PUFFS, M_ZERO | M_WAITOK); 1074 1075 poll_argp->pvnr_events = ap->a_events; 1076 puffs_cidcvt(&poll_argp->pvnr_cid, ap->a_l); 1077 1078 selrecord(ap->a_l, &pn->pn_sel); 1079 puffs_vntouser_call(pmp, PUFFS_VN_POLL, 1080 poll_argp, sizeof(struct puffs_vnreq_poll), 0, 1081 puffs_parkdone_poll, pn, 1082 vp, NULL); 1083 1084 return 0; 1085 } 1086 } else { 1087 return genfs_poll(v); 1088 } 1089 } 1090 1091 int 1092 puffs_fsync(void *v) 1093 { 1094 struct vop_fsync_args /* { 1095 const struct vnodeop_desc *a_desc; 1096 struct vnode *a_vp; 1097 kauth_cred_t a_cred; 1098 int a_flags; 1099 off_t a_offlo; 1100 off_t a_offhi; 1101 struct lwp *a_l; 1102 } */ *ap = v; 1103 struct vattr va; 1104 struct puffs_mount *pmp; 1105 struct puffs_vnreq_fsync *fsync_argp; 1106 struct vnode *vp; 1107 struct puffs_node *pn; 1108 int pflags, error, dofaf; 1109 1110 PUFFS_VNREQ(fsync); 1111 1112 vp = ap->a_vp; 1113 pn = VPTOPP(vp); 1114 pmp = MPTOPUFFSMP(vp->v_mount); 1115 1116 /* flush out information from our metacache, see vop_setattr */ 1117 if (pn->pn_stat & PNODE_METACACHE_MASK 1118 && (pn->pn_stat & PNODE_DYING) == 0) { 1119 vattr_null(&va); 1120 error = VOP_SETATTR(vp, &va, FSCRED, NULL); 1121 if (error) 1122 return error; 1123 } 1124 1125 /* 1126 * flush pages to avoid being overly dirty 1127 */ 1128 pflags = PGO_CLEANIT; 1129 if (ap->a_flags & FSYNC_WAIT) 1130 pflags |= PGO_SYNCIO; 1131 simple_lock(&vp->v_interlock); 1132 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 1133 round_page(ap->a_offhi), pflags); 1134 if (error) 1135 return error; 1136 1137 /* 1138 * HELLO! We exit already here if the user server does not 1139 * support fsync OR if we should call fsync for a node which 1140 * has references neither in the kernel or the fs server. 1141 * Otherwise we continue to issue fsync() forward. 1142 */ 1143 if (!EXISTSOP(pmp, FSYNC) || (pn->pn_stat & PNODE_DYING)) 1144 return 0; 1145 1146 dofaf = (ap->a_flags & FSYNC_WAIT) == 0 || ap->a_flags == FSYNC_LAZY; 1147 /* 1148 * We abuse VXLOCK to mean "vnode is going to die", so we issue 1149 * only FAFs for those. Otherwise there's a danger of deadlock, 1150 * since the execution context here might be the user server 1151 * doing some operation on another fs, which in turn caused a 1152 * vnode to be reclaimed from the freelist for this fs. 1153 */ 1154 if (dofaf == 0) { 1155 simple_lock(&vp->v_interlock); 1156 if (vp->v_flag & VXLOCK) 1157 dofaf = 1; 1158 simple_unlock(&vp->v_interlock); 1159 } 1160 1161 if (dofaf == 0) { 1162 fsync_argp = &fsync_arg; 1163 } else { 1164 fsync_argp = malloc(sizeof(struct puffs_vnreq_fsync), 1165 M_PUFFS, M_ZERO | M_NOWAIT); 1166 if (fsync_argp == NULL) 1167 return ENOMEM; 1168 } 1169 1170 puffs_credcvt(&fsync_argp->pvnr_cred, ap->a_cred); 1171 fsync_argp->pvnr_flags = ap->a_flags; 1172 fsync_argp->pvnr_offlo = ap->a_offlo; 1173 fsync_argp->pvnr_offhi = ap->a_offhi; 1174 puffs_cidcvt(&fsync_argp->pvnr_cid, ap->a_l); 1175 1176 /* 1177 * XXX: see comment at puffs_getattr about locking 1178 * 1179 * If we are not required to wait, do a FAF operation. 1180 * Otherwise block here. 1181 */ 1182 if (dofaf == 0) { 1183 error = puffs_vntouser(MPTOPUFFSMP(vp->v_mount), 1184 PUFFS_VN_FSYNC, fsync_argp, sizeof(*fsync_argp), 0, 1185 vp, NULL); 1186 } else { 1187 /* FAF is always "succesful" */ 1188 error = 0; 1189 puffs_vntouser_faf(MPTOPUFFSMP(vp->v_mount), 1190 PUFFS_VN_FSYNC, fsync_argp, sizeof(*fsync_argp), vp); 1191 } 1192 1193 return error; 1194 } 1195 1196 int 1197 puffs_seek(void *v) 1198 { 1199 struct vop_seek_args /* { 1200 const struct vnodeop_desc *a_desc; 1201 struct vnode *a_vp; 1202 off_t a_oldoff; 1203 off_t a_newoff; 1204 kauth_cred_t a_cred; 1205 } */ *ap = v; 1206 1207 PUFFS_VNREQ(seek); 1208 1209 seek_arg.pvnr_oldoff = ap->a_oldoff; 1210 seek_arg.pvnr_newoff = ap->a_newoff; 1211 puffs_credcvt(&seek_arg.pvnr_cred, ap->a_cred); 1212 1213 /* 1214 * XXX: seems like seek is called with an unlocked vp, but 1215 * it can't hurt to play safe 1216 */ 1217 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_SEEK, 1218 &seek_arg, sizeof(seek_arg), 0, ap->a_vp, NULL); 1219 } 1220 1221 int 1222 puffs_remove(void *v) 1223 { 1224 struct vop_remove_args /* { 1225 const struct vnodeop_desc *a_desc; 1226 struct vnode *a_dvp; 1227 struct vnode *a_vp; 1228 struct componentname *a_cnp; 1229 } */ *ap = v; 1230 struct puffs_mount *pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 1231 int error; 1232 1233 PUFFS_VNREQ(remove); 1234 1235 remove_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1236 puffs_makecn(&remove_arg.pvnr_cn, &remove_arg.pvnr_cn_cred, 1237 &remove_arg.pvnr_cn_cid, ap->a_cnp, PUFFS_USE_FULLPNBUF(pmp)); 1238 1239 error = puffs_vntouser(pmp, PUFFS_VN_REMOVE, 1240 &remove_arg, sizeof(remove_arg), 0, ap->a_dvp, ap->a_vp); 1241 1242 vput(ap->a_vp); 1243 if (ap->a_dvp == ap->a_vp) 1244 vrele(ap->a_dvp); 1245 else 1246 vput(ap->a_dvp); 1247 1248 return error; 1249 } 1250 1251 int 1252 puffs_mkdir(void *v) 1253 { 1254 struct vop_mkdir_args /* { 1255 const struct vnodeop_desc *a_desc; 1256 struct vnode *a_dvp; 1257 struct vnode **a_vpp; 1258 struct componentname *a_cnp; 1259 struct vattr *a_vap; 1260 } */ *ap = v; 1261 struct puffs_mount *pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 1262 int error; 1263 1264 PUFFS_VNREQ(mkdir); 1265 1266 puffs_makecn(&mkdir_arg.pvnr_cn, &mkdir_arg.pvnr_cn_cred, 1267 &mkdir_arg.pvnr_cn_cid, ap->a_cnp, PUFFS_USE_FULLPNBUF(pmp)); 1268 mkdir_arg.pvnr_va = *ap->a_vap; 1269 1270 error = puffs_vntouser(pmp, PUFFS_VN_MKDIR, 1271 &mkdir_arg, sizeof(mkdir_arg), 0, ap->a_dvp, NULL); 1272 if (error) 1273 goto out; 1274 1275 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 1276 mkdir_arg.pvnr_newnode, ap->a_cnp, VDIR, 0); 1277 1278 out: 1279 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 1280 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 1281 vput(ap->a_dvp); 1282 return error; 1283 } 1284 1285 int 1286 puffs_rmdir(void *v) 1287 { 1288 struct vop_rmdir_args /* { 1289 const struct vnodeop_desc *a_desc; 1290 struct vnode *a_dvp; 1291 struct vnode *a_vp; 1292 struct componentname *a_cnp; 1293 } */ *ap = v; 1294 struct puffs_mount *pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 1295 int error; 1296 1297 PUFFS_VNREQ(rmdir); 1298 1299 rmdir_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1300 puffs_makecn(&rmdir_arg.pvnr_cn, &rmdir_arg.pvnr_cn_cred, 1301 &rmdir_arg.pvnr_cn_cid, ap->a_cnp, PUFFS_USE_FULLPNBUF(pmp)); 1302 1303 error = puffs_vntouser(pmp, PUFFS_VN_RMDIR, 1304 &rmdir_arg, sizeof(rmdir_arg), 0, ap->a_dvp, ap->a_vp); 1305 1306 /* XXX: some call cache_purge() *for both vnodes* here, investigate */ 1307 1308 vput(ap->a_dvp); 1309 vput(ap->a_vp); 1310 1311 return error; 1312 } 1313 1314 int 1315 puffs_link(void *v) 1316 { 1317 struct vop_link_args /* { 1318 const struct vnodeop_desc *a_desc; 1319 struct vnode *a_dvp; 1320 struct vnode *a_vp; 1321 struct componentname *a_cnp; 1322 }*/ *ap = v; 1323 struct puffs_mount *pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 1324 int error; 1325 1326 PUFFS_VNREQ(link); 1327 1328 link_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1329 puffs_makecn(&link_arg.pvnr_cn, &link_arg.pvnr_cn_cred, 1330 &link_arg.pvnr_cn_cid, ap->a_cnp, PUFFS_USE_FULLPNBUF(pmp)); 1331 1332 error = puffs_vntouser(pmp, PUFFS_VN_LINK, 1333 &link_arg, sizeof(link_arg), 0, ap->a_dvp, ap->a_vp); 1334 1335 /* 1336 * XXX: stay in touch with the cache. I don't like this, but 1337 * don't have a better solution either. See also puffs_rename(). 1338 */ 1339 if (error == 0) 1340 puffs_updatenode(ap->a_vp, PUFFS_UPDATECTIME); 1341 1342 vput(ap->a_dvp); 1343 1344 return error; 1345 } 1346 1347 int 1348 puffs_symlink(void *v) 1349 { 1350 struct vop_symlink_args /* { 1351 const struct vnodeop_desc *a_desc; 1352 struct vnode *a_dvp; 1353 struct vnode **a_vpp; 1354 struct componentname *a_cnp; 1355 struct vattr *a_vap; 1356 char *a_target; 1357 }*/ *ap = v; 1358 struct puffs_mount *pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 1359 struct puffs_vnreq_symlink *symlink_argp; 1360 int error; 1361 1362 *ap->a_vpp = NULL; 1363 1364 symlink_argp = malloc(sizeof(struct puffs_vnreq_symlink), 1365 M_PUFFS, M_ZERO | M_WAITOK); 1366 puffs_makecn(&symlink_argp->pvnr_cn, &symlink_argp->pvnr_cn_cred, 1367 &symlink_argp->pvnr_cn_cid, ap->a_cnp, PUFFS_USE_FULLPNBUF(pmp)); 1368 symlink_argp->pvnr_va = *ap->a_vap; 1369 (void)strlcpy(symlink_argp->pvnr_link, ap->a_target, 1370 sizeof(symlink_argp->pvnr_link)); 1371 1372 error = puffs_vntouser(pmp, PUFFS_VN_SYMLINK, 1373 symlink_argp, sizeof(*symlink_argp), 0, ap->a_dvp, NULL); 1374 if (error) 1375 goto out; 1376 1377 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 1378 symlink_argp->pvnr_newnode, ap->a_cnp, VLNK, 0); 1379 1380 out: 1381 free(symlink_argp, M_PUFFS); 1382 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 1383 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 1384 vput(ap->a_dvp); 1385 1386 return error; 1387 } 1388 1389 int 1390 puffs_readlink(void *v) 1391 { 1392 struct vop_readlink_args /* { 1393 const struct vnodeop_desc *a_desc; 1394 struct vnode *a_vp; 1395 struct uio *a_uio; 1396 kauth_cred_t a_cred; 1397 } */ *ap = v; 1398 size_t linklen; 1399 int error; 1400 1401 PUFFS_VNREQ(readlink); 1402 1403 puffs_credcvt(&readlink_arg.pvnr_cred, ap->a_cred); 1404 linklen = sizeof(readlink_arg.pvnr_link); 1405 readlink_arg.pvnr_linklen = linklen; 1406 1407 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1408 PUFFS_VN_READLINK, &readlink_arg, sizeof(readlink_arg), 0, 1409 ap->a_vp, NULL); 1410 if (error) 1411 return error; 1412 1413 /* bad bad user file server */ 1414 if (readlink_arg.pvnr_linklen > linklen) 1415 return EINVAL; 1416 1417 return uiomove(&readlink_arg.pvnr_link, readlink_arg.pvnr_linklen, 1418 ap->a_uio); 1419 } 1420 1421 int 1422 puffs_rename(void *v) 1423 { 1424 struct vop_rename_args /* { 1425 const struct vnodeop_desc *a_desc; 1426 struct vnode *a_fdvp; 1427 struct vnode *a_fvp; 1428 struct componentname *a_fcnp; 1429 struct vnode *a_tdvp; 1430 struct vnode *a_tvp; 1431 struct componentname *a_tcnp; 1432 }*/ *ap = v; 1433 struct puffs_vnreq_rename *rename_argp = NULL; 1434 struct puffs_mount *pmp = MPTOPUFFSMP(ap->a_fdvp->v_mount); 1435 int error; 1436 1437 if (ap->a_fvp->v_mount != ap->a_tdvp->v_mount) 1438 ERROUT(EXDEV); 1439 1440 rename_argp = malloc(sizeof(struct puffs_vnreq_rename), 1441 M_PUFFS, M_WAITOK | M_ZERO); 1442 1443 rename_argp->pvnr_cookie_src = VPTOPNC(ap->a_fvp); 1444 rename_argp->pvnr_cookie_targdir = VPTOPNC(ap->a_tdvp); 1445 if (ap->a_tvp) 1446 rename_argp->pvnr_cookie_targ = VPTOPNC(ap->a_tvp); 1447 else 1448 rename_argp->pvnr_cookie_targ = NULL; 1449 puffs_makecn(&rename_argp->pvnr_cn_src, 1450 &rename_argp->pvnr_cn_src_cred, &rename_argp->pvnr_cn_src_cid, 1451 ap->a_fcnp, PUFFS_USE_FULLPNBUF(pmp)); 1452 puffs_makecn(&rename_argp->pvnr_cn_targ, 1453 &rename_argp->pvnr_cn_targ_cred, &rename_argp->pvnr_cn_targ_cid, 1454 ap->a_tcnp, PUFFS_USE_FULLPNBUF(pmp)); 1455 1456 error = puffs_vntouser(pmp, PUFFS_VN_RENAME, 1457 rename_argp, sizeof(*rename_argp), 0, ap->a_fdvp, NULL); /* XXX */ 1458 1459 /* 1460 * XXX: stay in touch with the cache. I don't like this, but 1461 * don't have a better solution either. See also puffs_link(). 1462 */ 1463 if (error == 0) 1464 puffs_updatenode(ap->a_fvp, PUFFS_UPDATECTIME); 1465 1466 out: 1467 if (rename_argp) 1468 free(rename_argp, M_PUFFS); 1469 if (ap->a_tvp != NULL) 1470 vput(ap->a_tvp); 1471 if (ap->a_tdvp == ap->a_tvp) 1472 vrele(ap->a_tdvp); 1473 else 1474 vput(ap->a_tdvp); 1475 1476 vrele(ap->a_fdvp); 1477 vrele(ap->a_fvp); 1478 1479 return error; 1480 } 1481 1482 #define RWARGS(cont, iofl, move, offset, creds) \ 1483 (cont)->pvnr_ioflag = (iofl); \ 1484 (cont)->pvnr_resid = (move); \ 1485 (cont)->pvnr_offset = (offset); \ 1486 puffs_credcvt(&(cont)->pvnr_cred, creds) 1487 1488 int 1489 puffs_read(void *v) 1490 { 1491 struct vop_read_args /* { 1492 const struct vnodeop_desc *a_desc; 1493 struct vnode *a_vp; 1494 struct uio *a_uio; 1495 int a_ioflag; 1496 kauth_cred_t a_cred; 1497 } */ *ap = v; 1498 struct puffs_vnreq_read *read_argp; 1499 struct puffs_mount *pmp; 1500 struct vnode *vp; 1501 struct uio *uio; 1502 void *win; 1503 size_t tomove, argsize; 1504 vsize_t bytelen; 1505 int error, ubcflags; 1506 1507 uio = ap->a_uio; 1508 vp = ap->a_vp; 1509 read_argp = NULL; 1510 error = 0; 1511 pmp = MPTOPUFFSMP(vp->v_mount); 1512 1513 /* std sanity */ 1514 if (uio->uio_resid == 0) 1515 return 0; 1516 if (uio->uio_offset < 0) 1517 return EINVAL; 1518 1519 if (vp->v_type == VREG && PUFFS_USE_PAGECACHE(pmp)) { 1520 const int advice = IO_ADV_DECODE(ap->a_ioflag); 1521 1522 ubcflags = 0; 1523 if (UBC_WANT_UNMAP(vp)) 1524 ubcflags = UBC_UNMAP; 1525 1526 while (uio->uio_resid > 0) { 1527 bytelen = MIN(uio->uio_resid, 1528 vp->v_size - uio->uio_offset); 1529 if (bytelen == 0) 1530 break; 1531 1532 win = ubc_alloc(&vp->v_uobj, uio->uio_offset, 1533 &bytelen, advice, UBC_READ); 1534 error = uiomove(win, bytelen, uio); 1535 ubc_release(win, ubcflags); 1536 if (error) 1537 break; 1538 } 1539 1540 if ((vp->v_mount->mnt_flag & MNT_NOATIME) == 0) 1541 puffs_updatenode(vp, PUFFS_UPDATEATIME); 1542 } else { 1543 /* 1544 * in case it's not a regular file or we're operating 1545 * uncached, do read in the old-fashioned style, 1546 * i.e. explicit read operations 1547 */ 1548 1549 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1550 argsize = sizeof(struct puffs_vnreq_read); 1551 read_argp = malloc(argsize + tomove, 1552 M_PUFFS, M_WAITOK | M_ZERO); 1553 1554 error = 0; 1555 while (uio->uio_resid > 0) { 1556 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1557 RWARGS(read_argp, ap->a_ioflag, tomove, 1558 uio->uio_offset, ap->a_cred); 1559 1560 error = puffs_vntouser(pmp, PUFFS_VN_READ, 1561 read_argp, argsize, tomove, 1562 ap->a_vp, NULL); 1563 if (error) 1564 break; 1565 1566 if (read_argp->pvnr_resid > tomove) { 1567 error = EINVAL; 1568 break; 1569 } 1570 1571 error = uiomove(read_argp->pvnr_data, 1572 tomove - read_argp->pvnr_resid, uio); 1573 1574 /* 1575 * in case the file is out of juice, resid from 1576 * userspace is != 0. and the error-case is 1577 * quite obvious 1578 */ 1579 if (error || read_argp->pvnr_resid) 1580 break; 1581 } 1582 } 1583 1584 if (read_argp) 1585 free(read_argp, M_PUFFS); 1586 return error; 1587 } 1588 1589 /* 1590 * XXX: in case of a failure, this leaves uio in a bad state. 1591 * We could theoretically copy the uio and iovecs and "replay" 1592 * them the right amount after the userspace trip, but don't 1593 * bother for now. 1594 */ 1595 int 1596 puffs_write(void *v) 1597 { 1598 struct vop_write_args /* { 1599 const struct vnodeop_desc *a_desc; 1600 struct vnode *a_vp; 1601 struct uio *a_uio; 1602 int a_ioflag; 1603 kauth_cred_t a_cred; 1604 } */ *ap = v; 1605 struct puffs_vnreq_write *write_argp; 1606 struct puffs_mount *pmp; 1607 struct uio *uio; 1608 struct vnode *vp; 1609 size_t tomove, argsize; 1610 off_t oldoff, newoff, origoff; 1611 vsize_t bytelen; 1612 int error, uflags; 1613 int ubcflags; 1614 1615 vp = ap->a_vp; 1616 uio = ap->a_uio; 1617 error = uflags = 0; 1618 write_argp = NULL; 1619 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1620 1621 if (vp->v_type == VREG && PUFFS_USE_PAGECACHE(pmp)) { 1622 ubcflags = UBC_WRITE | UBC_PARTIALOK; 1623 if (UBC_WANT_UNMAP(vp)) 1624 ubcflags = UBC_UNMAP; 1625 1626 /* 1627 * userspace *should* be allowed to control this, 1628 * but with UBC it's a bit unclear how to handle it 1629 */ 1630 if (ap->a_ioflag & IO_APPEND) 1631 uio->uio_offset = vp->v_size; 1632 1633 origoff = uio->uio_offset; 1634 while (uio->uio_resid > 0) { 1635 uflags |= PUFFS_UPDATECTIME; 1636 uflags |= PUFFS_UPDATEMTIME; 1637 oldoff = uio->uio_offset; 1638 bytelen = uio->uio_resid; 1639 1640 newoff = oldoff + bytelen; 1641 if (vp->v_size < newoff) { 1642 uvm_vnp_setwritesize(vp, newoff); 1643 } 1644 error = ubc_uiomove(&vp->v_uobj, uio, bytelen, 1645 ubcflags); 1646 1647 /* 1648 * In case of a ubc_uiomove() error, 1649 * opt to not extend the file at all and 1650 * return an error. Otherwise, if we attempt 1651 * to clear the memory we couldn't fault to, 1652 * we might generate a kernel page fault. 1653 */ 1654 if (vp->v_size < newoff) { 1655 if (error == 0) { 1656 uflags |= PUFFS_UPDATESIZE; 1657 uvm_vnp_setsize(vp, newoff); 1658 } else { 1659 uvm_vnp_setwritesize(vp, vp->v_size); 1660 } 1661 } 1662 if (error) 1663 break; 1664 1665 /* 1666 * If we're writing large files, flush to file server 1667 * every 64k. Otherwise we can very easily exhaust 1668 * kernel and user memory, as the file server cannot 1669 * really keep up with our writing speed. 1670 * 1671 * Note: this does *NOT* honor MNT_ASYNC, because 1672 * that gives userland too much say in the kernel. 1673 */ 1674 if (oldoff >> 16 != uio->uio_offset >> 16) { 1675 simple_lock(&vp->v_interlock); 1676 error = VOP_PUTPAGES(vp, oldoff & ~0xffff, 1677 uio->uio_offset & ~0xffff, 1678 PGO_CLEANIT | PGO_SYNCIO); 1679 if (error) 1680 break; 1681 } 1682 } 1683 1684 /* synchronous I/O? */ 1685 if (error == 0 && ap->a_ioflag & IO_SYNC) { 1686 simple_lock(&vp->v_interlock); 1687 error = VOP_PUTPAGES(vp, trunc_page(origoff), 1688 round_page(uio->uio_offset), 1689 PGO_CLEANIT | PGO_SYNCIO); 1690 1691 /* write though page cache? */ 1692 } else if (error == 0 && pmp->pmp_flags & PUFFS_KFLAG_WTCACHE) { 1693 simple_lock(&vp->v_interlock); 1694 error = VOP_PUTPAGES(vp, trunc_page(origoff), 1695 round_page(uio->uio_offset), PGO_CLEANIT); 1696 } 1697 1698 puffs_updatenode(vp, uflags); 1699 } else { 1700 /* tomove is non-increasing */ 1701 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1702 argsize = sizeof(struct puffs_vnreq_write) + tomove; 1703 write_argp = malloc(argsize, M_PUFFS, M_WAITOK | M_ZERO); 1704 1705 while (uio->uio_resid > 0) { 1706 /* move data to buffer */ 1707 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1708 RWARGS(write_argp, ap->a_ioflag, tomove, 1709 uio->uio_offset, ap->a_cred); 1710 error = uiomove(write_argp->pvnr_data, tomove, uio); 1711 if (error) 1712 break; 1713 1714 /* move buffer to userspace */ 1715 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1716 PUFFS_VN_WRITE, write_argp, argsize, 0, 1717 ap->a_vp, NULL); 1718 if (error) 1719 break; 1720 1721 if (write_argp->pvnr_resid > tomove) { 1722 error = EINVAL; 1723 break; 1724 } 1725 1726 /* adjust file size */ 1727 if (vp->v_size < uio->uio_offset) 1728 uvm_vnp_setsize(vp, uio->uio_offset); 1729 1730 /* didn't move everything? bad userspace. bail */ 1731 if (write_argp->pvnr_resid != 0) { 1732 error = EIO; 1733 break; 1734 } 1735 } 1736 } 1737 1738 if (write_argp) 1739 free(write_argp, M_PUFFS); 1740 return error; 1741 } 1742 1743 static int puffs_fcnioctl(struct vop_ioctl_args * /*XXX*/, int); 1744 1745 #define FCNIOCTL_ARG_MAX 1<<16 1746 int 1747 puffs_fcnioctl(struct vop_ioctl_args *ap, int puffsop) 1748 { 1749 1750 /* currently not supported */ 1751 return EOPNOTSUPP; 1752 #if 0 1753 /* struct vop_ioctl_args { 1754 const struct vnodeop_desc *a_desc; 1755 struct vnode *a_vp; 1756 u_long a_command; 1757 void *a_data; 1758 int a_fflag; 1759 kauth_cred_t a_cred; 1760 struct lwp *a_l; 1761 }*ap = v; */ 1762 struct puffs_mount *pmp; 1763 struct puffs_sizepark pspark; 1764 void *kernbuf; 1765 size_t copylen; 1766 int error; 1767 1768 PUFFS_VNREQ(fcnioctl); 1769 1770 /* 1771 * Since this op gives the filesystem (almost) complete control on 1772 * how much it is allowed to copy from the calling process 1773 * address space, do not enable it by default, since it would 1774 * be a whopping security hole. 1775 */ 1776 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1777 if ((pmp->pmp_flags & PUFFS_KFLAG_ALLOWCTL) == 0) 1778 return EINVAL; /* only shoe that fits */ 1779 1780 /* fill in sizereq and store it */ 1781 pspark.pkso_reqid = puffs_getreqid(pmp); 1782 pspark.pkso_reqtype = PUFFS_SIZEOPREQ_BUF_IN; 1783 pspark.pkso_copybuf = ap->a_data; 1784 pspark.pkso_bufsize = FCNIOCTL_ARG_MAX; 1785 TAILQ_INSERT_TAIL(&pmp->pmp_req_sizepark, &pspark, pkso_entries); 1786 1787 /* then fill in actual request and shoot it off */ 1788 fcnioctl_arg.pvnr_command = ap->a_command; 1789 fcnioctl_arg.pvnr_fflag = ap->a_fflag; 1790 puffs_credcvt(&fcnioctl_arg.pvnr_cred, ap->a_cred); 1791 fcnioctl_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 1792 1793 error = puffs_vntouser_req(MPTOPUFFSMP(ap->a_vp->v_mount), puffsop, 1794 &fcnioctl_arg, sizeof(fcnioctl_arg), 0, ap->a_vp, 1795 pspark.pkso_reqid, ap->a_vp, NULL); 1796 1797 /* if we don't need to copy data, we're done */ 1798 if (error || !fcnioctl_arg.pvnr_copyback) 1799 return error; 1800 1801 copylen = MIN(FCNIOCTL_ARG_MAX, fcnioctl_arg.pvnr_datalen); 1802 kernbuf = malloc(copylen, M_PUFFS, M_WAITOK); 1803 error = copyin(fcnioctl_arg.pvnr_data, kernbuf, copylen); 1804 if (error) 1805 goto out; 1806 error = copyout(kernbuf, ap->a_data, copylen); 1807 1808 out: 1809 free(kernbuf, M_PUFFS); 1810 return error; 1811 #endif 1812 } 1813 1814 int 1815 puffs_ioctl(void *v) 1816 { 1817 1818 return puffs_fcnioctl(v, PUFFS_VN_IOCTL); 1819 } 1820 1821 int 1822 puffs_fcntl(void *v) 1823 { 1824 1825 return puffs_fcnioctl(v, PUFFS_VN_FCNTL); 1826 } 1827 1828 int 1829 puffs_print(void *v) 1830 { 1831 struct vop_print_args /* { 1832 struct vnode *a_vp; 1833 } */ *ap = v; 1834 struct puffs_mount *pmp; 1835 struct vnode *vp = ap->a_vp; 1836 struct puffs_node *pn = vp->v_data; 1837 1838 PUFFS_VNREQ(print); 1839 1840 pmp = MPTOPUFFSMP(vp->v_mount); 1841 1842 /* kernel portion */ 1843 printf("tag VT_PUFFS, vnode %p, puffs node: %p,\n" 1844 " userspace cookie: %p\n", vp, pn, pn->pn_cookie); 1845 if (vp->v_type == VFIFO) 1846 fifo_printinfo(vp); 1847 lockmgr_printinfo(&vp->v_lock); 1848 1849 /* userspace portion */ 1850 if (EXISTSOP(pmp, PRINT)) 1851 puffs_vntouser(pmp, PUFFS_VN_PRINT, 1852 &print_arg, sizeof(print_arg), 0, ap->a_vp, NULL); 1853 1854 return 0; 1855 } 1856 1857 int 1858 puffs_pathconf(void *v) 1859 { 1860 struct vop_pathconf_args /* { 1861 const struct vnodeop_desc *a_desc; 1862 struct vnode *a_vp; 1863 int a_name; 1864 register_t *a_retval; 1865 } */ *ap = v; 1866 int error; 1867 1868 PUFFS_VNREQ(pathconf); 1869 1870 pathconf_arg.pvnr_name = ap->a_name; 1871 1872 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1873 PUFFS_VN_PATHCONF, &pathconf_arg, sizeof(pathconf_arg), 0, 1874 ap->a_vp, NULL); 1875 if (error) 1876 return error; 1877 1878 *ap->a_retval = pathconf_arg.pvnr_retval; 1879 1880 return 0; 1881 } 1882 1883 int 1884 puffs_advlock(void *v) 1885 { 1886 struct vop_advlock_args /* { 1887 const struct vnodeop_desc *a_desc; 1888 struct vnode *a_vp; 1889 void *a_id; 1890 int a_op; 1891 struct flock *a_fl; 1892 int a_flags; 1893 } */ *ap = v; 1894 int error; 1895 1896 PUFFS_VNREQ(advlock); 1897 1898 error = copyin(ap->a_fl, &advlock_arg.pvnr_fl, sizeof(struct flock)); 1899 if (error) 1900 return error; 1901 advlock_arg.pvnr_id = ap->a_id; 1902 advlock_arg.pvnr_op = ap->a_op; 1903 advlock_arg.pvnr_flags = ap->a_flags; 1904 1905 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_ADVLOCK, 1906 &advlock_arg, sizeof(advlock_arg), 0, ap->a_vp, NULL); 1907 } 1908 1909 #define BIOASYNC(bp) (bp->b_flags & B_ASYNC) 1910 #define BIOREAD(bp) (bp->b_flags & B_READ) 1911 #define BIOWRITE(bp) ((bp->b_flags & B_READ) == 0) 1912 1913 /* 1914 * This maps itself to PUFFS_VN_READ/WRITE for data transfer. 1915 */ 1916 int 1917 puffs_strategy(void *v) 1918 { 1919 struct vop_strategy_args /* { 1920 const struct vnodeop_desc *a_desc; 1921 struct vnode *a_vp; 1922 struct buf *a_bp; 1923 } */ *ap = v; 1924 struct puffs_mount *pmp; 1925 struct vnode *vp = ap->a_vp; 1926 struct puffs_node *pn; 1927 struct puffs_vnreq_readwrite *rw_argp = NULL; 1928 struct buf *bp; 1929 size_t argsize; 1930 size_t tomove, moved; 1931 int error, dofaf; 1932 1933 pmp = MPTOPUFFSMP(vp->v_mount); 1934 bp = ap->a_bp; 1935 error = 0; 1936 dofaf = 0; 1937 pn = VPTOPP(vp); 1938 1939 if ((BIOREAD(bp) && !EXISTSOP(pmp, READ)) 1940 || (BIOWRITE(bp) && !EXISTSOP(pmp, WRITE))) 1941 ERROUT(EOPNOTSUPP); 1942 1943 /* 1944 * Short-circuit optimization: don't flush buffer in between 1945 * VOP_INACTIVE and VOP_RECLAIM in case the node has no references. 1946 */ 1947 if (pn->pn_stat & PNODE_DYING) { 1948 KASSERT(BIOWRITE(bp)); 1949 bp->b_resid = 0; 1950 goto out; 1951 } 1952 1953 #ifdef DIAGNOSTIC 1954 if (bp->b_bcount > pmp->pmp_req_maxsize - PUFFS_REQSTRUCT_MAX) 1955 panic("puffs_strategy: wildly inappropriate buf bcount %d", 1956 bp->b_bcount); 1957 #endif 1958 1959 /* 1960 * See explanation for the necessity of a FAF in puffs_fsync. 1961 * 1962 * Also, do FAF in case we're suspending. 1963 * See puffs_vfsops.c:pageflush() 1964 */ 1965 if (BIOWRITE(bp)) { 1966 simple_lock(&vp->v_interlock); 1967 if (vp->v_flag & VXLOCK) 1968 dofaf = 1; 1969 if (pn->pn_stat & PNODE_SUSPEND) 1970 dofaf = 1; 1971 simple_unlock(&vp->v_interlock); 1972 } 1973 1974 if (BIOASYNC(bp)) 1975 dofaf = 1; 1976 1977 #ifdef DIAGNOSTIC 1978 if (curlwp == uvm.pagedaemon_lwp) 1979 KASSERT(dofaf); 1980 #endif 1981 1982 /* allocate transport structure */ 1983 tomove = PUFFS_TOMOVE(bp->b_bcount, pmp); 1984 argsize = sizeof(struct puffs_vnreq_readwrite); 1985 rw_argp = malloc(argsize + tomove, M_PUFFS, 1986 M_ZERO | (dofaf ? M_NOWAIT : M_WAITOK)); 1987 if (rw_argp == NULL) 1988 ERROUT(ENOMEM); 1989 RWARGS(rw_argp, 0, tomove, bp->b_blkno << DEV_BSHIFT, FSCRED); 1990 1991 /* 2x2 cases: read/write, faf/nofaf */ 1992 if (BIOREAD(bp)) { 1993 if (dofaf) { 1994 puffs_vntouser_call(pmp, PUFFS_VN_READ, rw_argp, 1995 argsize, tomove, puffs_parkdone_asyncbioread, 1996 bp, vp, NULL); 1997 } else { 1998 error = puffs_vntouser(pmp, PUFFS_VN_READ, 1999 rw_argp, argsize, tomove, vp, NULL); 2000 if (error) 2001 goto out; 2002 2003 if (rw_argp->pvnr_resid > tomove) 2004 ERROUT(EINVAL); 2005 2006 moved = tomove - rw_argp->pvnr_resid; 2007 2008 (void)memcpy(bp->b_data, rw_argp->pvnr_data, moved); 2009 bp->b_resid = bp->b_bcount - moved; 2010 } 2011 } else { 2012 /* 2013 * make pages read-only before we write them if we want 2014 * write caching info 2015 */ 2016 if (PUFFS_WCACHEINFO(pmp)) { 2017 struct uvm_object *uobj = &vp->v_uobj; 2018 int npages = (bp->b_bcount + PAGE_SIZE-1) >> PAGE_SHIFT; 2019 struct vm_page *vmp; 2020 int i; 2021 2022 for (i = 0; i < npages; i++) { 2023 vmp= uvm_pageratop((vaddr_t)bp->b_data 2024 + (i << PAGE_SHIFT)); 2025 DPRINTF(("puffs_strategy: write-protecting " 2026 "vp %p page %p, offset %" PRId64"\n", 2027 vp, vmp, vmp->offset)); 2028 simple_lock(&uobj->vmobjlock); 2029 vmp->flags |= PG_RDONLY; 2030 pmap_page_protect(vmp, VM_PROT_READ); 2031 simple_unlock(&uobj->vmobjlock); 2032 } 2033 } 2034 2035 (void)memcpy(&rw_argp->pvnr_data, bp->b_data, tomove); 2036 if (dofaf) { 2037 /* 2038 * assume FAF moves everything. frankly, we don't 2039 * really have a choice. 2040 */ 2041 puffs_vntouser_faf(MPTOPUFFSMP(vp->v_mount), 2042 PUFFS_VN_WRITE, rw_argp, argsize + tomove, vp); 2043 bp->b_resid = bp->b_bcount - tomove; 2044 } else { 2045 error = puffs_vntouser(MPTOPUFFSMP(vp->v_mount), 2046 PUFFS_VN_WRITE, rw_argp, argsize + tomove, 2047 0, vp, NULL); 2048 if (error) 2049 goto out; 2050 2051 moved = tomove - rw_argp->pvnr_resid; 2052 if (rw_argp->pvnr_resid > tomove) 2053 ERROUT(EINVAL); 2054 2055 bp->b_resid = bp->b_bcount - moved; 2056 if (rw_argp->pvnr_resid != 0) 2057 ERROUT(EIO); 2058 } 2059 } 2060 2061 out: 2062 KASSERT(dofaf == 0 || error == 0 || rw_argp == NULL); 2063 if (rw_argp && !dofaf) 2064 free(rw_argp, M_PUFFS); 2065 2066 if (error) { 2067 bp->b_error = error; 2068 bp->b_flags |= B_ERROR; 2069 } 2070 2071 if (error || !(BIOREAD(bp) && BIOASYNC(bp))) 2072 biodone(bp); 2073 2074 return error; 2075 } 2076 2077 int 2078 puffs_mmap(void *v) 2079 { 2080 struct vop_mmap_args /* { 2081 const struct vnodeop_desc *a_desc; 2082 struct vnode *a_vp; 2083 int a_fflags; 2084 kauth_cred_t a_cred; 2085 struct lwp *a_l; 2086 } */ *ap = v; 2087 struct puffs_mount *pmp; 2088 int error; 2089 2090 PUFFS_VNREQ(mmap); 2091 2092 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 2093 2094 if (!PUFFS_USE_PAGECACHE(pmp)) 2095 return genfs_eopnotsupp(v); 2096 2097 if (EXISTSOP(pmp, MMAP)) { 2098 mmap_arg.pvnr_fflags = ap->a_fflags; 2099 puffs_credcvt(&mmap_arg.pvnr_cred, ap->a_cred); 2100 puffs_cidcvt(&mmap_arg.pvnr_cid, ap->a_l); 2101 2102 error = puffs_vntouser(pmp, PUFFS_VN_MMAP, 2103 &mmap_arg, sizeof(mmap_arg), 0, 2104 ap->a_vp, NULL); 2105 } else { 2106 error = genfs_mmap(v); 2107 } 2108 2109 return error; 2110 } 2111 2112 2113 /* 2114 * The rest don't get a free trip to userspace and back, they 2115 * have to stay within the kernel. 2116 */ 2117 2118 /* 2119 * bmap doesn't really make any sense for puffs, so just 1:1 map it. 2120 * well, maybe somehow, somewhere, some day .... 2121 */ 2122 int 2123 puffs_bmap(void *v) 2124 { 2125 struct vop_bmap_args /* { 2126 const struct vnodeop_desc *a_desc; 2127 struct vnode *a_vp; 2128 daddr_t a_bn; 2129 struct vnode **a_vpp; 2130 daddr_t *a_bnp; 2131 int *a_runp; 2132 } */ *ap = v; 2133 struct puffs_mount *pmp; 2134 2135 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 2136 2137 if (ap->a_vpp) 2138 *ap->a_vpp = ap->a_vp; 2139 if (ap->a_bnp) 2140 *ap->a_bnp = ap->a_bn; 2141 if (ap->a_runp) 2142 *ap->a_runp 2143 = (PUFFS_TOMOVE(pmp->pmp_req_maxsize, pmp)>>DEV_BSHIFT) - 1; 2144 2145 return 0; 2146 } 2147 2148 /* 2149 * Handle getpages faults in puffs. We let genfs_getpages() do most 2150 * of the dirty work, but we come in this route to do accounting tasks. 2151 * If the user server has specified functions for cache notifications 2152 * about reads and/or writes, we record which type of operation we got, 2153 * for which page range, and proceed to issue a FAF notification to the 2154 * server about it. 2155 */ 2156 int 2157 puffs_getpages(void *v) 2158 { 2159 struct vop_getpages_args /* { 2160 const struct vnodeop_desc *a_desc; 2161 struct vnode *a_vp; 2162 voff_t a_offset; 2163 struct vm_page **a_m; 2164 int *a_count; 2165 int a_centeridx; 2166 vm_prot_t a_access_type; 2167 int a_advice; 2168 int a_flags; 2169 } */ *ap = v; 2170 struct puffs_mount *pmp; 2171 struct vnode *vp; 2172 struct vm_page **pgs; 2173 struct puffs_cacheinfo *pcinfo = NULL; 2174 struct puffs_cacherun *pcrun; 2175 void *parkmem = NULL; 2176 size_t runsizes; 2177 int i, npages, si, streakon; 2178 int error, locked, write; 2179 2180 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 2181 npages = *ap->a_count; 2182 pgs = ap->a_m; 2183 vp = ap->a_vp; 2184 locked = (ap->a_flags & PGO_LOCKED) != 0; 2185 write = (ap->a_access_type & VM_PROT_WRITE) != 0; 2186 2187 /* ccg xnaht - gets Wuninitialized wrong */ 2188 pcrun = NULL; 2189 runsizes = 0; 2190 2191 if (write && PUFFS_WCACHEINFO(pmp)) { 2192 /* allocate worst-case memory */ 2193 runsizes = ((npages / 2) + 1) * sizeof(struct puffs_cacherun); 2194 pcinfo = malloc(sizeof(struct puffs_cacheinfo) + runsizes, 2195 M_PUFFS, M_ZERO | locked ? M_NOWAIT : M_WAITOK); 2196 2197 /* 2198 * can't block if we're locked and can't mess up caching 2199 * information for fs server. so come back later, please 2200 */ 2201 if (pcinfo == NULL) 2202 ERROUT(ENOMEM); 2203 2204 parkmem = puffs_park_alloc(locked == 0); 2205 if (parkmem == NULL) 2206 ERROUT(ENOMEM); 2207 2208 pcrun = pcinfo->pcache_runs; 2209 } 2210 2211 error = genfs_getpages(v); 2212 if (error) 2213 goto out; 2214 2215 if (PUFFS_WCACHEINFO(pmp) == 0) 2216 goto out; 2217 2218 /* 2219 * Let's see whose fault it was and inform the user server of 2220 * possibly read/written pages. Map pages from read faults 2221 * strictly read-only, since otherwise we might miss info on 2222 * when the page is actually write-faulted to. 2223 */ 2224 if (!locked) 2225 simple_lock(&vp->v_uobj.vmobjlock); 2226 for (i = 0, si = 0, streakon = 0; i < npages; i++) { 2227 if (pgs[i] == NULL || pgs[i] == PGO_DONTCARE) { 2228 if (streakon && write) { 2229 streakon = 0; 2230 pcrun[si].pcache_runend 2231 = trunc_page(pgs[i]->offset) + PAGE_MASK; 2232 si++; 2233 } 2234 continue; 2235 } 2236 if (streakon == 0 && write) { 2237 streakon = 1; 2238 pcrun[si].pcache_runstart = pgs[i]->offset; 2239 } 2240 2241 if (!write) 2242 pgs[i]->flags |= PG_RDONLY; 2243 } 2244 /* was the last page part of our streak? */ 2245 if (streakon) { 2246 pcrun[si].pcache_runend 2247 = trunc_page(pgs[i-1]->offset) + PAGE_MASK; 2248 si++; 2249 } 2250 if (!locked) 2251 simple_unlock(&vp->v_uobj.vmobjlock); 2252 2253 KASSERT(si <= (npages / 2) + 1); 2254 2255 /* send results to userspace */ 2256 if (write) 2257 puffs_cacheop(pmp, parkmem, pcinfo, 2258 sizeof(struct puffs_cacheinfo) + runsizes, VPTOPNC(vp)); 2259 2260 out: 2261 if (error) { 2262 if (pcinfo != NULL) 2263 free(pcinfo, M_PUFFS); 2264 if (parkmem != NULL) 2265 puffs_park_release(parkmem, 1); 2266 } 2267 2268 return error; 2269 } 2270 2271 int 2272 puffs_lock(void *v) 2273 { 2274 struct vop_lock_args /* { 2275 struct vnode *a_vp; 2276 int a_flags; 2277 }*/ *ap = v; 2278 struct vnode *vp = ap->a_vp; 2279 struct mount *mp = vp->v_mount; 2280 2281 #if 0 2282 DPRINTF(("puffs_lock: lock %p, args 0x%x\n", vp, ap->a_flags)); 2283 #endif 2284 2285 /* 2286 * XXX: this avoids deadlocking when we're suspending. 2287 * e.g. some ops holding the vnode lock might be blocked for 2288 * the vfs transaction lock so we'd deadlock. 2289 * 2290 * Now once again this is skating on the thin ice of modern life, 2291 * since we are breaking the consistency guarantee provided 2292 * _to the user server_ by vnode locking. Hopefully this will 2293 * get fixed soon enough by getting rid of the dependency on 2294 * vnode locks alltogether. 2295 */ 2296 if (fstrans_is_owner(mp) && fstrans_getstate(mp) == FSTRANS_SUSPENDING){ 2297 if (ap->a_flags & LK_INTERLOCK) 2298 simple_unlock(&vp->v_interlock); 2299 return 0; 2300 } 2301 2302 return lockmgr(&vp->v_lock, ap->a_flags, &vp->v_interlock); 2303 } 2304 2305 int 2306 puffs_unlock(void *v) 2307 { 2308 struct vop_unlock_args /* { 2309 struct vnode *a_vp; 2310 int a_flags; 2311 } */ *ap = v; 2312 struct vnode *vp = ap->a_vp; 2313 struct mount *mp = vp->v_mount; 2314 2315 #if 0 2316 DPRINTF(("puffs_unlock: lock %p, args 0x%x\n", vp, ap->a_flags)); 2317 #endif 2318 2319 /* XXX: see puffs_lock() */ 2320 if (fstrans_is_owner(mp) && fstrans_getstate(mp) == FSTRANS_SUSPENDING){ 2321 if (ap->a_flags & LK_INTERLOCK) 2322 simple_unlock(&vp->v_interlock); 2323 return 0; 2324 } 2325 2326 return lockmgr(&vp->v_lock, ap->a_flags | LK_RELEASE, &vp->v_interlock); 2327 } 2328 2329 int 2330 puffs_islocked(void *v) 2331 { 2332 struct vop_islocked_args *ap = v; 2333 int rv; 2334 2335 rv = lockstatus(&ap->a_vp->v_lock); 2336 return rv; 2337 } 2338 2339 int 2340 puffs_generic(void *v) 2341 { 2342 struct vop_generic_args *ap = v; 2343 2344 (void)ap; 2345 DPRINTF(("puffs_generic: ap->a_desc = %s\n", ap->a_desc->vdesc_name)); 2346 2347 return EOPNOTSUPP; 2348 } 2349 2350 2351 /* 2352 * spec & fifo. These call the miscfs spec and fifo vectors, but issue 2353 * FAF update information for the puffs node first. 2354 */ 2355 int 2356 puffs_spec_read(void *v) 2357 { 2358 struct vop_read_args /* { 2359 const struct vnodeop_desc *a_desc; 2360 struct vnode *a_vp; 2361 struct uio *a_uio; 2362 int a_ioflag; 2363 kauth_cred_t a_cred; 2364 } */ *ap = v; 2365 2366 puffs_updatenode(ap->a_vp, PUFFS_UPDATEATIME); 2367 return VOCALL(spec_vnodeop_p, VOFFSET(vop_read), v); 2368 } 2369 2370 int 2371 puffs_spec_write(void *v) 2372 { 2373 struct vop_write_args /* { 2374 const struct vnodeop_desc *a_desc; 2375 struct vnode *a_vp; 2376 struct uio *a_uio; 2377 int a_ioflag; 2378 kauth_cred_t a_cred; 2379 }*/ *ap = v; 2380 2381 puffs_updatenode(ap->a_vp, PUFFS_UPDATEMTIME); 2382 return VOCALL(spec_vnodeop_p, VOFFSET(vop_write), v); 2383 } 2384 2385 int 2386 puffs_fifo_read(void *v) 2387 { 2388 struct vop_read_args /* { 2389 const struct vnodeop_desc *a_desc; 2390 struct vnode *a_vp; 2391 struct uio *a_uio; 2392 int a_ioflag; 2393 kauth_cred_t a_cred; 2394 } */ *ap = v; 2395 2396 puffs_updatenode(ap->a_vp, PUFFS_UPDATEATIME); 2397 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), v); 2398 } 2399 2400 int 2401 puffs_fifo_write(void *v) 2402 { 2403 struct vop_write_args /* { 2404 const struct vnodeop_desc *a_desc; 2405 struct vnode *a_vp; 2406 struct uio *a_uio; 2407 int a_ioflag; 2408 kauth_cred_t a_cred; 2409 }*/ *ap = v; 2410 2411 puffs_updatenode(ap->a_vp, PUFFS_UPDATEMTIME); 2412 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), v); 2413 } 2414
Indexes created Wed Oct 01 15:09:59 GMT 2025