puffs_vnops.c revision 1.28
1 /* $NetBSD: puffs_vnops.c,v 1.28 2007/01/02 00:14:15 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 1.28 2007/01/02 00:14:15 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 * Check if someone fed it into the cache 448 */ 449 if (PUFFS_DOCACHE(pmp)) { 450 error = cache_lookup(dvp, ap->a_vpp, cnp); 451 if (error >= 0) 452 return error; 453 } 454 455 if (isdot) { 456 vp = ap->a_dvp; 457 vref(vp); 458 *ap->a_vpp = vp; 459 return 0; 460 } 461 462 puffs_makecn(&lookup_arg.pvnr_cn, cnp); 463 464 if (cnp->cn_flags & ISDOTDOT) 465 VOP_UNLOCK(dvp, 0); 466 467 error = puffs_vntouser(pmp, PUFFS_VN_LOOKUP, 468 &lookup_arg, sizeof(lookup_arg), VPTOPNC(dvp), LOCKEDVP(dvp), NULL); 469 DPRINTF(("puffs_lookup: return of the userspace, part %d\n", error)); 470 471 /* 472 * In case of error, there is no new vnode to play with, so be 473 * happy with the NULL value given to vpp in the beginning. 474 * Also, check if this really was an error or the target was not 475 * present. Either treat it as a non-error for CREATE/RENAME or 476 * enter the component into the negative name cache (if desired). 477 */ 478 if (error) { 479 if (error == ENOENT) { 480 if ((cnp->cn_flags & ISLASTCN) 481 && (cnp->cn_nameiop == CREATE 482 || cnp->cn_nameiop == RENAME)) { 483 cnp->cn_flags |= SAVENAME; 484 error = EJUSTRETURN; 485 } else { 486 if ((cnp->cn_flags & MAKEENTRY) 487 && PUFFS_DOCACHE(pmp)) 488 cache_enter(dvp, NULL, cnp); 489 } 490 } 491 goto errout; 492 } 493 494 vp = puffs_pnode2vnode(pmp, lookup_arg.pvnr_newnode); 495 if (!vp) { 496 error = puffs_getvnode(dvp->v_mount, 497 lookup_arg.pvnr_newnode, lookup_arg.pvnr_vtype, 498 lookup_arg.pvnr_size, lookup_arg.pvnr_rdev, &vp); 499 if (error) { 500 goto errout; 501 } 502 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 503 } 504 *ap->a_vpp = vp; 505 506 if ((cnp->cn_flags & MAKEENTRY) != 0 && PUFFS_DOCACHE(pmp)) 507 cache_enter(dvp, vp, cnp); 508 509 errout: 510 if (cnp->cn_flags & ISDOTDOT) 511 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 512 513 return error; 514 } 515 516 int 517 puffs_create(void *v) 518 { 519 struct vop_create_args /* { 520 const struct vnodeop_desc *a_desc; 521 struct vnode *a_dvp; 522 struct vnode **a_vpp; 523 struct componentname *a_cnp; 524 struct vattr *a_vap; 525 } */ *ap = v; 526 int error; 527 528 PUFFS_VNREQ(create); 529 530 puffs_makecn(&create_arg.pvnr_cn, ap->a_cnp); 531 create_arg.pvnr_va = *ap->a_vap; 532 533 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_CREATE, 534 &create_arg, sizeof(create_arg), VPTOPNC(ap->a_dvp), 535 ap->a_dvp, NULL); 536 if (error) 537 goto out; 538 539 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 540 create_arg.pvnr_newnode, ap->a_cnp, ap->a_vap->va_type, 0); 541 542 out: 543 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 544 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 545 vput(ap->a_dvp); 546 return error; 547 } 548 549 int 550 puffs_mknod(void *v) 551 { 552 struct vop_mknod_args /* { 553 const struct vnodeop_desc *a_desc; 554 struct vnode *a_dvp; 555 struct vnode **a_vpp; 556 struct componentname *a_cnp; 557 struct vattr *a_vap; 558 } */ *ap = v; 559 int error; 560 561 PUFFS_VNREQ(mknod); 562 563 puffs_makecn(&mknod_arg.pvnr_cn, ap->a_cnp); 564 mknod_arg.pvnr_va = *ap->a_vap; 565 566 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_MKNOD, 567 &mknod_arg, sizeof(mknod_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 568 if (error) 569 goto out; 570 571 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 572 mknod_arg.pvnr_newnode, ap->a_cnp, ap->a_vap->va_type, 573 ap->a_vap->va_rdev); 574 575 out: 576 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 577 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 578 vput(ap->a_dvp); 579 return error; 580 } 581 582 int 583 puffs_open(void *v) 584 { 585 struct vop_open_args /* { 586 const struct vnodeop_desc *a_desc; 587 struct vnode *a_vp; 588 int a_mode; 589 kauth_cred_t a_cred; 590 struct lwp *a_l; 591 } */ *ap = v; 592 593 PUFFS_VNREQ(open); 594 595 open_arg.pvnr_mode = ap->a_mode; 596 puffs_credcvt(&open_arg.pvnr_cred, ap->a_cred); 597 open_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 598 599 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_OPEN, 600 &open_arg, sizeof(open_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 601 } 602 603 int 604 puffs_close(void *v) 605 { 606 struct vop_close_args /* { 607 const struct vnodeop_desc *a_desc; 608 struct vnode *a_vp; 609 int a_fflag; 610 kauth_cred_t a_cred; 611 struct lwp *a_l; 612 } */ *ap = v; 613 614 PUFFS_VNREQ(close); 615 616 close_arg.pvnr_fflag = ap->a_fflag; 617 puffs_credcvt(&close_arg.pvnr_cred, ap->a_cred); 618 close_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 619 620 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_CLOSE, 621 &close_arg, sizeof(close_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 622 } 623 624 int 625 puffs_access(void *v) 626 { 627 struct vop_access_args /* { 628 const struct vnodeop_desc *a_desc; 629 struct vnode *a_vp; 630 int a_mode; 631 kauth_cred_t a_cred; 632 struct lwp *a_l; 633 } */ *ap = v; 634 635 PUFFS_VNREQ(access); 636 637 access_arg.pvnr_mode = ap->a_mode; 638 access_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 639 puffs_credcvt(&access_arg.pvnr_cred, ap->a_cred); 640 641 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_ACCESS, 642 &access_arg, sizeof(access_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 643 } 644 645 int 646 puffs_getattr(void *v) 647 { 648 struct vop_getattr_args /* { 649 const struct vnodeop_desc *a_desc; 650 struct vnode *a_vp; 651 struct vattr *a_vap; 652 kauth_cred_t a_cred; 653 struct lwp *a_l; 654 } */ *ap = v; 655 struct mount *mp; 656 int error; 657 658 PUFFS_VNREQ(getattr); 659 660 mp = ap->a_vp->v_mount; 661 662 vattr_null(&getattr_arg.pvnr_va); 663 puffs_credcvt(&getattr_arg.pvnr_cred, ap->a_cred); 664 getattr_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 665 666 /* 667 * XXX + XX (dos equis): this can't go through the unlock/lock 668 * cycle, since it can be called from uvn_attach(), which fiddles 669 * around with VXLOCK and therefore breaks vn_lock(). Proper 670 * fix pending. 671 */ 672 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_GETATTR, 673 &getattr_arg, sizeof(getattr_arg), VPTOPNC(ap->a_vp), 674 NULL /* XXXseeabove: should be LOCKEDVP(ap->a_vp) */, NULL); 675 if (error) 676 return error; 677 678 (void)memcpy(ap->a_vap, &getattr_arg.pvnr_va, sizeof(struct vattr)); 679 680 /* 681 * fill in information userspace does not have 682 * XXX: but would it be better to do fsid at the generic level? 683 */ 684 ap->a_vap->va_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 685 686 return 0; 687 } 688 689 int 690 puffs_setattr(void *v) 691 { 692 struct vop_getattr_args /* { 693 const struct vnodeop_desc *a_desc; 694 struct vnode *a_vp; 695 struct vattr *a_vap; 696 kauth_cred_t a_cred; 697 struct lwp *a_l; 698 } */ *ap = v; 699 int error; 700 701 PUFFS_VNREQ(setattr); 702 703 (void)memcpy(&setattr_arg.pvnr_va, ap->a_vap, sizeof(struct vattr)); 704 puffs_credcvt(&setattr_arg.pvnr_cred, ap->a_cred); 705 setattr_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 706 707 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_SETATTR, 708 &setattr_arg, sizeof(setattr_arg), VPTOPNC(ap->a_vp), 709 ap->a_vp, NULL); 710 if (error) 711 return error; 712 713 if (ap->a_vap->va_size != VNOVAL) 714 uvm_vnp_setsize(ap->a_vp, ap->a_vap->va_size); 715 716 return 0; 717 } 718 719 int 720 puffs_revoke(void *v) 721 { 722 struct vop_revoke_args /* { 723 const struct vnodeop_desc *a_desc; 724 struct vnode *a_vp; 725 int a_flags; 726 } */ *ap = v; 727 struct puffs_mount *pmp; 728 729 PUFFS_VNREQ(revoke); 730 731 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 732 733 revoke_arg.pvnr_flags = ap->a_flags; 734 735 /* don't really care if userspace doesn't want to play along */ 736 if (EXISTSOP(pmp, REVOKE)) 737 puffs_vntouser(pmp, PUFFS_VN_REVOKE, 738 &revoke_arg, sizeof(revoke_arg), VPTOPNC(ap->a_vp), 739 NULL, NULL); 740 741 return genfs_revoke(v); 742 } 743 744 /* 745 * There is no technical need to have this travel to userspace 746 * synchronously. So once async reply support is in place, make this 747 * async. 748 */ 749 int 750 puffs_inactive(void *v) 751 { 752 struct vop_inactive_args /* { 753 const struct vnodeop_desc *a_desc; 754 struct vnode *a_vp; 755 struct lwp *a_l; 756 } */ *ap = v; 757 struct puffs_mount *pmp; 758 struct puffs_node *pnode; 759 int rv, vnrefs; 760 761 PUFFS_VNREQ(inactive); 762 763 /* 764 * XXX: think about this after we really start unlocking 765 * when going to userspace 766 */ 767 pnode = ap->a_vp->v_data; 768 pnode->pn_stat |= PNODE_INACTIVE; 769 770 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 771 772 inactive_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 773 774 if (EXISTSOP(pmp, INACTIVE)) 775 rv = puffs_vntouser(pmp, PUFFS_VN_INACTIVE, 776 &inactive_arg, sizeof(inactive_arg), VPTOPNC(ap->a_vp), 777 ap->a_vp, NULL); 778 else 779 rv = 1; /* see below */ 780 781 /* can't trust userspace return value? simulate safe answer */ 782 if (rv) 783 vnrefs = 1; 784 else 785 vnrefs = inactive_arg.pvnr_backendrefs; 786 787 VOP_UNLOCK(ap->a_vp, 0); 788 789 /* 790 * user server thinks it's gone? then don't be afraid care, 791 * node's life was already all it would ever be 792 */ 793 if (vnrefs == 0) 794 vrecycle(ap->a_vp, NULL, ap->a_l); 795 796 return 0; 797 } 798 799 int 800 puffs_reclaim(void *v) 801 { 802 struct vop_reclaim_args /* { 803 const struct vnodeop_desc *a_desc; 804 struct vnode *a_vp; 805 struct lwp *a_l; 806 } */ *ap = v; 807 struct puffs_mount *pmp; 808 int error; 809 810 PUFFS_VNREQ(reclaim); 811 812 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 813 814 /* 815 * first things first: check if someone is trying to reclaim the 816 * root vnode. do not allow that to travel to userspace. 817 * Note that we don't need to take the lock similarly to 818 * puffs_root(), since there is only one of us. 819 */ 820 if (ap->a_vp->v_flag & VROOT) { 821 #ifdef DIAGNOSTIC 822 simple_lock(&pmp->pmp_lock); 823 if (pmp->pmp_root == NULL) 824 panic("puffs_reclaim: releasing root vnode (%p) twice", 825 ap->a_vp); 826 simple_unlock(&pmp->pmp_lock); 827 #endif 828 pmp->pmp_root = NULL; 829 puffs_putvnode(ap->a_vp); 830 return 0; 831 } 832 833 reclaim_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 834 835 if (EXISTSOP(pmp, RECLAIM)) 836 error = puffs_vntouser(pmp, PUFFS_VN_RECLAIM, 837 &reclaim_arg, sizeof(reclaim_arg), VPTOPNC(ap->a_vp), 838 NULL, NULL); 839 else 840 error = 0; 841 #if 0 842 /* 843 * XXX: if reclaim fails for any other reason than the userspace 844 * being dead, we should consider unmounting the filesystem, since 845 * we can't trust it to be in a consistent state anymore. But for 846 * now, just ignore all errors. 847 */ 848 if (error) 849 return error; 850 #endif 851 852 if (PUFFS_DOCACHE(pmp)) 853 cache_purge(ap->a_vp); 854 puffs_putvnode(ap->a_vp); 855 856 return 0; 857 } 858 859 int 860 puffs_readdir(void *v) 861 { 862 struct vop_readdir_args /* { 863 const struct vnodeop_desc *a_desc; 864 struct vnode *a_vp; 865 struct uio *a_uio; 866 kauth_cred_t a_cred; 867 int *a_eofflag; 868 off_t **a_cookies; 869 int *a_ncookies; 870 } */ *ap = v; 871 struct puffs_vnreq_readdir *readdir_argp; 872 size_t argsize; 873 struct uio *uio = ap->a_uio; 874 size_t howmuch; 875 int error; 876 877 /* worry about these later */ 878 if (!(ap->a_cookies == NULL && ap->a_ncookies == NULL)) 879 return EOPNOTSUPP; 880 881 argsize = sizeof(struct puffs_vnreq_readdir); 882 readdir_argp = malloc(argsize, M_PUFFS, M_ZERO | M_WAITOK); 883 884 puffs_credcvt(&readdir_argp->pvnr_cred, ap->a_cred); 885 readdir_argp->pvnr_offset = uio->uio_offset; 886 readdir_argp->pvnr_resid = uio->uio_resid; 887 888 error = puffs_vntouser_adjbuf(MPTOPUFFSMP(ap->a_vp->v_mount), 889 PUFFS_VN_READDIR, (void **)&readdir_argp, &argsize, 890 readdir_argp->pvnr_resid, VPTOPNC(ap->a_vp), ap->a_vp, NULL); 891 if (error) 892 goto out; 893 894 /* userspace is cheating? */ 895 if (readdir_argp->pvnr_resid > uio->uio_resid) { 896 error = EINVAL; 897 goto out; 898 } 899 900 /* bouncy-wouncy with the directory data */ 901 howmuch = uio->uio_resid - readdir_argp->pvnr_resid; 902 error = uiomove(readdir_argp->pvnr_dent, howmuch, uio); 903 if (error) 904 goto out; 905 uio->uio_offset = readdir_argp->pvnr_offset; 906 907 out: 908 free(readdir_argp, M_PUFFS); 909 return error; 910 } 911 912 int 913 puffs_poll(void *v) 914 { 915 struct vop_poll_args /* { 916 const struct vnodeop_desc *a_desc; 917 struct vnode *a_vp; 918 int a_events; 919 struct lwp *a_l; 920 }*/ *ap = v; 921 922 PUFFS_VNREQ(poll); 923 924 poll_arg.pvnr_events = ap->a_events; 925 poll_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 926 927 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_POLL, 928 &poll_arg, sizeof(poll_arg), VPTOPNC(ap->a_vp), NULL, NULL); 929 } 930 931 int 932 puffs_fsync(void *v) 933 { 934 struct vop_fsync_args /* { 935 const struct vnodeop_desc *a_desc; 936 struct vnode *a_vp; 937 kauth_cred_t a_cred; 938 int a_flags; 939 off_t a_offlo; 940 off_t a_offhi; 941 struct lwp *a_l; 942 } */ *ap = v; 943 struct puffs_vnreq_fsync *fsync_argp; 944 struct vnode *vp; 945 int pflags, error; 946 947 PUFFS_VNREQ(fsync); 948 949 vp = ap->a_vp; 950 951 pflags = PGO_CLEANIT; 952 if (ap->a_flags & FSYNC_WAIT) { 953 pflags |= PGO_SYNCIO; 954 fsync_argp = &fsync_arg; 955 } else { 956 fsync_argp = malloc(sizeof(struct puffs_vnreq_fsync), 957 M_PUFFS, M_ZERO | M_NOWAIT); 958 if (fsync_argp == NULL) 959 return ENOMEM; 960 } 961 962 /* 963 * flush pages to avoid being overly dirty 964 */ 965 simple_lock(&vp->v_interlock); 966 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 967 round_page(ap->a_offhi), pflags); 968 if (error) 969 return error; 970 971 puffs_credcvt(&fsync_argp->pvnr_cred, ap->a_cred); 972 fsync_argp->pvnr_flags = ap->a_flags; 973 fsync_argp->pvnr_offlo = ap->a_offlo; 974 fsync_argp->pvnr_offhi = ap->a_offhi; 975 fsync_argp->pvnr_pid = puffs_lwp2pid(ap->a_l); 976 977 /* 978 * XXX: see comment at puffs_getattr about locking 979 * 980 * If we are not required to wait, do a FAF operation. 981 * Otherwise block here. 982 */ 983 if (ap->a_flags & FSYNC_WAIT) { 984 error = puffs_vntouser(MPTOPUFFSMP(vp->v_mount), 985 PUFFS_VN_FSYNC, fsync_argp, sizeof(*fsync_argp), 986 VPTOPNC(vp), NULL /* XXXshouldbe: vp */, NULL); 987 } else { 988 /* FAF is always "succesful" */ 989 error = 0; 990 puffs_vntouser_faf(MPTOPUFFSMP(vp->v_mount), 991 PUFFS_VN_FSYNC, fsync_argp, sizeof(*fsync_argp), 992 VPTOPNC(vp)); 993 } 994 995 return error; 996 } 997 998 int 999 puffs_seek(void *v) 1000 { 1001 struct vop_seek_args /* { 1002 const struct vnodeop_desc *a_desc; 1003 struct vnode *a_vp; 1004 off_t a_oldoff; 1005 off_t a_newoff; 1006 kauth_cred_t a_cred; 1007 } */ *ap = v; 1008 1009 PUFFS_VNREQ(seek); 1010 1011 seek_arg.pvnr_oldoff = ap->a_oldoff; 1012 seek_arg.pvnr_newoff = ap->a_newoff; 1013 puffs_credcvt(&seek_arg.pvnr_cred, ap->a_cred); 1014 1015 /* 1016 * XXX: seems like seek is called with an unlocked vp, but 1017 * it can't hurt to play safe 1018 */ 1019 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_SEEK, 1020 &seek_arg, sizeof(seek_arg), VPTOPNC(ap->a_vp), 1021 LOCKEDVP(ap->a_vp), NULL); 1022 } 1023 1024 int 1025 puffs_remove(void *v) 1026 { 1027 struct vop_remove_args /* { 1028 const struct vnodeop_desc *a_desc; 1029 struct vnode *a_dvp; 1030 struct vnode *a_vp; 1031 struct componentname *a_cnp; 1032 } */ *ap = v; 1033 int error; 1034 1035 PUFFS_VNREQ(remove); 1036 1037 remove_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1038 puffs_makecn(&remove_arg.pvnr_cn, ap->a_cnp); 1039 1040 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_REMOVE, 1041 &remove_arg, sizeof(remove_arg), VPTOPNC(ap->a_dvp), 1042 ap->a_dvp, ap->a_vp); 1043 1044 vput(ap->a_vp); 1045 if (ap->a_dvp == ap->a_vp) 1046 vrele(ap->a_dvp); 1047 else 1048 vput(ap->a_dvp); 1049 1050 return error; 1051 } 1052 1053 int 1054 puffs_mkdir(void *v) 1055 { 1056 struct vop_mkdir_args /* { 1057 const struct vnodeop_desc *a_desc; 1058 struct vnode *a_dvp; 1059 struct vnode **a_vpp; 1060 struct componentname *a_cnp; 1061 struct vattr *a_vap; 1062 } */ *ap = v; 1063 int error; 1064 1065 PUFFS_VNREQ(mkdir); 1066 1067 puffs_makecn(&mkdir_arg.pvnr_cn, ap->a_cnp); 1068 mkdir_arg.pvnr_va = *ap->a_vap; 1069 1070 /* XXX: wouldn't need to relock dvp, but that's life */ 1071 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_MKDIR, 1072 &mkdir_arg, sizeof(mkdir_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1073 if (error) 1074 goto out; 1075 1076 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 1077 mkdir_arg.pvnr_newnode, ap->a_cnp, VDIR, 0); 1078 1079 out: 1080 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 1081 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 1082 vput(ap->a_dvp); 1083 return error; 1084 } 1085 1086 int 1087 puffs_rmdir(void *v) 1088 { 1089 struct vop_rmdir_args /* { 1090 const struct vnodeop_desc *a_desc; 1091 struct vnode *a_dvp; 1092 struct vnode *a_vp; 1093 struct componentname *a_cnp; 1094 } */ *ap = v; 1095 int error; 1096 1097 PUFFS_VNREQ(rmdir); 1098 1099 rmdir_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1100 puffs_makecn(&rmdir_arg.pvnr_cn, ap->a_cnp); 1101 1102 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_RMDIR, 1103 &rmdir_arg, sizeof(rmdir_arg), VPTOPNC(ap->a_dvp), 1104 ap->a_dvp, ap->a_vp); 1105 1106 /* XXX: some call cache_purge() *for both vnodes* here, investigate */ 1107 1108 vput(ap->a_dvp); 1109 vput(ap->a_vp); 1110 1111 return error; 1112 } 1113 1114 int 1115 puffs_link(void *v) 1116 { 1117 struct vop_link_args /* { 1118 const struct vnodeop_desc *a_desc; 1119 struct vnode *a_dvp; 1120 struct vnode *a_vp; 1121 struct componentname *a_cnp; 1122 }*/ *ap = v; 1123 int error; 1124 1125 PUFFS_VNREQ(link); 1126 1127 link_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1128 puffs_makecn(&link_arg.pvnr_cn, ap->a_cnp); 1129 1130 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_LINK, 1131 &link_arg, sizeof(link_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1132 1133 vput(ap->a_dvp); 1134 1135 return error; 1136 } 1137 1138 int 1139 puffs_symlink(void *v) 1140 { 1141 struct vop_symlink_args /* { 1142 const struct vnodeop_desc *a_desc; 1143 struct vnode *a_dvp; 1144 struct vnode **a_vpp; 1145 struct componentname *a_cnp; 1146 struct vattr *a_vap; 1147 char *a_target; 1148 }*/ *ap = v; 1149 int error; 1150 1151 PUFFS_VNREQ(symlink); /* XXX: large structure */ 1152 1153 *ap->a_vpp = NULL; 1154 1155 puffs_makecn(&symlink_arg.pvnr_cn, ap->a_cnp); 1156 symlink_arg.pvnr_va = *ap->a_vap; 1157 (void)strlcpy(symlink_arg.pvnr_link, ap->a_target, 1158 sizeof(symlink_arg.pvnr_link)); 1159 1160 /* XXX: don't need to relock parent */ 1161 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), 1162 PUFFS_VN_SYMLINK, &symlink_arg, sizeof(symlink_arg), 1163 VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1164 if (error) 1165 goto out; 1166 1167 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 1168 symlink_arg.pvnr_newnode, ap->a_cnp, VLNK, 0); 1169 1170 out: 1171 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 1172 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 1173 vput(ap->a_dvp); 1174 return error; 1175 } 1176 1177 int 1178 puffs_readlink(void *v) 1179 { 1180 struct vop_readlink_args /* { 1181 const struct vnodeop_desc *a_desc; 1182 struct vnode *a_vp; 1183 struct uio *a_uio; 1184 kauth_cred_t a_cred; 1185 } */ *ap = v; 1186 int error; 1187 1188 PUFFS_VNREQ(readlink); 1189 1190 puffs_credcvt(&readlink_arg.pvnr_cred, ap->a_cred); 1191 readlink_arg.pvnr_linklen = sizeof(readlink_arg.pvnr_link); 1192 1193 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1194 PUFFS_VN_READLINK, &readlink_arg, sizeof(readlink_arg), 1195 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1196 if (error) 1197 return error; 1198 1199 readlink_arg.pvnr_link[readlink_arg.pvnr_linklen] = '\0'; 1200 return uiomove(&readlink_arg.pvnr_link, readlink_arg.pvnr_linklen, 1201 ap->a_uio); 1202 } 1203 1204 /* XXXXXXX: think about locking & userspace op delocking... */ 1205 int 1206 puffs_rename(void *v) 1207 { 1208 struct vop_rename_args /* { 1209 const struct vnodeop_desc *a_desc; 1210 struct vnode *a_fdvp; 1211 struct vnode *a_fvp; 1212 struct componentname *a_fcnp; 1213 struct vnode *a_tdvp; 1214 struct vnode *a_tvp; 1215 struct componentname *a_tcnp; 1216 }*/ *ap = v; 1217 int error; 1218 1219 PUFFS_VNREQ(rename); 1220 1221 if (ap->a_fvp->v_mount != ap->a_tdvp->v_mount) { 1222 error = EXDEV; 1223 goto out; 1224 } 1225 1226 rename_arg.pvnr_cookie_src = VPTOPNC(ap->a_fvp); 1227 rename_arg.pvnr_cookie_targdir = VPTOPNC(ap->a_tdvp); 1228 if (ap->a_tvp) 1229 rename_arg.pvnr_cookie_targ = VPTOPNC(ap->a_tvp); 1230 else 1231 rename_arg.pvnr_cookie_targ = NULL; 1232 puffs_makecn(&rename_arg.pvnr_cn_src, ap->a_fcnp); 1233 puffs_makecn(&rename_arg.pvnr_cn_targ, ap->a_tcnp); 1234 1235 error = puffs_vntouser(MPTOPUFFSMP(ap->a_fdvp->v_mount), 1236 PUFFS_VN_RENAME, &rename_arg, sizeof(rename_arg), 1237 VPTOPNC(ap->a_fdvp), NULL, NULL); 1238 1239 out: 1240 if (ap->a_tvp != NULL) 1241 vput(ap->a_tvp); 1242 if (ap->a_tdvp == ap->a_tvp) 1243 vrele(ap->a_tdvp); 1244 else 1245 vput(ap->a_tdvp); 1246 1247 vrele(ap->a_fdvp); 1248 vrele(ap->a_fvp); 1249 1250 return error; 1251 } 1252 1253 int 1254 puffs_read(void *v) 1255 { 1256 struct vop_read_args /* { 1257 const struct vnodeop_desc *a_desc; 1258 struct vnode *a_vp; 1259 struct uio *a_uio; 1260 int a_ioflag; 1261 kauth_cred_t a_cred; 1262 } */ *ap = v; 1263 struct puffs_vnreq_read *read_argp; 1264 struct puffs_mount *pmp; 1265 struct vnode *vp; 1266 struct uio *uio; 1267 void *win; 1268 size_t tomove, argsize; 1269 vsize_t bytelen; 1270 int error, ubcflags; 1271 1272 uio = ap->a_uio; 1273 vp = ap->a_vp; 1274 read_argp = NULL; 1275 error = 0; 1276 pmp = MPTOPUFFSMP(vp->v_mount); 1277 1278 /* std sanity */ 1279 if (uio->uio_resid == 0) 1280 return 0; 1281 if (uio->uio_offset < 0) 1282 return EINVAL; 1283 1284 if (vp->v_type == VREG && PUFFS_DOCACHE(pmp)) { 1285 const int advice = IO_ADV_DECODE(ap->a_ioflag); 1286 1287 ubcflags = 0; 1288 if (UBC_WANT_UNMAP(vp)) 1289 ubcflags = UBC_UNMAP; 1290 1291 while (uio->uio_resid > 0) { 1292 bytelen = MIN(uio->uio_resid, 1293 vp->v_size - uio->uio_offset); 1294 if (bytelen == 0) 1295 break; 1296 1297 win = ubc_alloc(&vp->v_uobj, uio->uio_offset, 1298 &bytelen, advice, UBC_READ); 1299 error = uiomove(win, bytelen, uio); 1300 ubc_release(win, ubcflags); 1301 if (error) 1302 break; 1303 } 1304 1305 if ((vp->v_mount->mnt_flag & MNT_NOATIME) == 0) 1306 puffs_updatenode(vp, PUFFS_UPDATEATIME); 1307 } else { 1308 /* 1309 * in case it's not a regular file or we're operating 1310 * uncached, do read in the old-fashioned style, 1311 * i.e. explicit read operations 1312 */ 1313 1314 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1315 argsize = sizeof(struct puffs_vnreq_read); 1316 read_argp = malloc(argsize, M_PUFFS, M_WAITOK | M_ZERO); 1317 1318 error = 0; 1319 while (uio->uio_resid > 0) { 1320 read_argp->pvnr_ioflag = ap->a_ioflag; 1321 read_argp->pvnr_resid = tomove; 1322 read_argp->pvnr_offset = uio->uio_offset; 1323 puffs_credcvt(&read_argp->pvnr_cred, ap->a_cred); 1324 1325 argsize = sizeof(struct puffs_vnreq_read); 1326 error = puffs_vntouser_adjbuf(pmp, PUFFS_VN_READ, 1327 (void **)&read_argp, &argsize, 1328 read_argp->pvnr_resid, VPTOPNC(ap->a_vp), 1329 ap->a_vp, NULL); 1330 if (error) 1331 break; 1332 1333 if (read_argp->pvnr_resid > tomove) { 1334 error = EINVAL; 1335 break; 1336 } 1337 1338 error = uiomove(read_argp->pvnr_data, 1339 tomove - read_argp->pvnr_resid, uio); 1340 1341 /* 1342 * in case the file is out of juice, resid from 1343 * userspace is != 0. and the error-case is 1344 * quite obvious 1345 */ 1346 if (error || read_argp->pvnr_resid) 1347 break; 1348 1349 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1350 } 1351 } 1352 1353 if (read_argp) 1354 free(read_argp, M_PUFFS); 1355 return error; 1356 } 1357 1358 int 1359 puffs_write(void *v) 1360 { 1361 struct vop_write_args /* { 1362 const struct vnodeop_desc *a_desc; 1363 struct vnode *a_vp; 1364 struct uio *a_uio; 1365 int a_ioflag; 1366 kauth_cred_t a_cred; 1367 }*/ *ap = v; 1368 struct puffs_vnreq_write *write_argp; 1369 struct puffs_mount *pmp; 1370 struct uio *uio; 1371 struct vnode *vp; 1372 void *win; 1373 size_t tomove, argsize; 1374 off_t oldoff, newoff, origoff; 1375 vsize_t bytelen; 1376 int error, uflags; 1377 int async, ubcflags; 1378 1379 vp = ap->a_vp; 1380 uio = ap->a_uio; 1381 async = vp->v_mount->mnt_flag & MNT_ASYNC; 1382 error = uflags = 0; 1383 write_argp = NULL; 1384 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1385 1386 if (vp->v_type == VREG && PUFFS_DOCACHE(pmp)) { 1387 ubcflags = 0; 1388 if (UBC_WANT_UNMAP(vp)) 1389 ubcflags = UBC_UNMAP; 1390 1391 /* 1392 * userspace *should* be allowed to control this, 1393 * but with UBC it's a bit unclear how to handle it 1394 */ 1395 if (ap->a_ioflag & IO_APPEND) 1396 uio->uio_offset = vp->v_size; 1397 1398 origoff = uio->uio_offset; 1399 while (uio->uio_resid > 0) { 1400 uflags |= PUFFS_UPDATECTIME; 1401 uflags |= PUFFS_UPDATEMTIME; 1402 oldoff = uio->uio_offset; 1403 bytelen = uio->uio_resid; 1404 1405 win = ubc_alloc(&vp->v_uobj, oldoff, &bytelen, 1406 UVM_ADV_NORMAL, UBC_WRITE); 1407 error = uiomove(win, bytelen, uio); 1408 1409 /* 1410 * did we grow the file? 1411 * XXX: should probably ask userspace to extend 1412 * it's idea of the *first* before growing it 1413 * here. Or we need some mechanism to "rollback" 1414 * in case putpages fails. 1415 */ 1416 newoff = oldoff + bytelen; 1417 if (vp->v_size < newoff) { 1418 uflags |= PUFFS_UPDATESIZE; 1419 uvm_vnp_setsize(vp, newoff); 1420 1421 /* 1422 * in case we couldn't copy data to the 1423 * window, zero it out so that we don't 1424 * have any random leftovers in there. 1425 */ 1426 if (error) 1427 memset(win, 0, bytelen); 1428 } 1429 1430 ubc_release(win, ubcflags); 1431 if (error) 1432 break; 1433 1434 /* ok, I really need to admit: why's this? */ 1435 if (!async && oldoff >> 16 != uio->uio_offset >> 16) { 1436 simple_lock(&vp->v_interlock); 1437 error = VOP_PUTPAGES(vp, oldoff & ~0xffff, 1438 uio->uio_offset & ~0xffff, PGO_CLEANIT); 1439 if (error) 1440 break; 1441 } 1442 } 1443 1444 if (error == 0 && ap->a_ioflag & IO_SYNC) { 1445 simple_lock(&vp->v_interlock); 1446 error = VOP_PUTPAGES(vp, trunc_page(origoff), 1447 round_page(uio->uio_offset), 1448 PGO_CLEANIT | PGO_SYNCIO); 1449 } 1450 1451 puffs_updatenode(vp, uflags); 1452 } else { 1453 /* tomove is non-increasing */ 1454 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1455 argsize = sizeof(struct puffs_vnreq_write) + tomove; 1456 write_argp = malloc(argsize, M_PUFFS, M_WAITOK | M_ZERO); 1457 1458 while (uio->uio_resid > 0) { 1459 write_argp->pvnr_ioflag = ap->a_ioflag; 1460 write_argp->pvnr_resid = tomove; 1461 write_argp->pvnr_offset = uio->uio_offset; 1462 puffs_credcvt(&write_argp->pvnr_cred, ap->a_cred); 1463 error = uiomove(write_argp->pvnr_data, tomove, uio); 1464 if (error) 1465 break; 1466 1467 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1468 PUFFS_VN_WRITE, write_argp, argsize, 1469 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1470 if (error) { 1471 /* restore uiomove */ 1472 uio->uio_resid += tomove; 1473 uio->uio_offset -= tomove; 1474 break; 1475 } 1476 if (write_argp->pvnr_resid > tomove) { 1477 /* 1478 * XXX: correct file size is a mystery, 1479 * we can only guess 1480 */ 1481 error = EINVAL; 1482 break; 1483 } 1484 1485 /* adjust file size */ 1486 if (vp->v_size < uio->uio_offset) 1487 uvm_vnp_setsize(vp, uio->uio_offset); 1488 1489 /* didn't move everything? bad userspace. bail */ 1490 if (write_argp->pvnr_resid != 0) { 1491 uio->uio_resid += write_argp->pvnr_resid; 1492 uio->uio_offset -= write_argp->pvnr_resid; 1493 error = EIO; 1494 break; 1495 } 1496 1497 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1498 } 1499 } 1500 1501 if (write_argp) 1502 free(write_argp, M_PUFFS); 1503 return error; 1504 } 1505 1506 static int puffs_fcnioctl(struct vop_ioctl_args * /*XXX*/, int); 1507 1508 #define FCNIOCTL_ARG_MAX 1<<16 1509 int 1510 puffs_fcnioctl(struct vop_ioctl_args *ap, int puffsop) 1511 { 1512 1513 /* currently not supported */ 1514 return EOPNOTSUPP; 1515 #if 0 1516 /* struct vop_ioctl_args { 1517 const struct vnodeop_desc *a_desc; 1518 struct vnode *a_vp; 1519 u_long a_command; 1520 void *a_data; 1521 int a_fflag; 1522 kauth_cred_t a_cred; 1523 struct lwp *a_l; 1524 }*ap = v; */ 1525 struct puffs_mount *pmp; 1526 struct puffs_sizepark pspark; 1527 void *kernbuf; 1528 size_t copylen; 1529 int error; 1530 1531 PUFFS_VNREQ(fcnioctl); 1532 1533 /* 1534 * Since this op gives the filesystem (almost) complete control on 1535 * how much it is allowed to copy from the calling process 1536 * address space, do not enable it by default, since it would 1537 * be a whopping security hole. 1538 */ 1539 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1540 if ((pmp->pmp_flags & PUFFS_KFLAG_ALLOWCTL) == 0) 1541 return EINVAL; /* only shoe that fits */ 1542 1543 /* fill in sizereq and store it */ 1544 pspark.pkso_reqid = puffs_getreqid(pmp); 1545 pspark.pkso_reqtype = PUFFS_SIZEOPREQ_BUF_IN; 1546 pspark.pkso_copybuf = ap->a_data; 1547 pspark.pkso_bufsize = FCNIOCTL_ARG_MAX; 1548 TAILQ_INSERT_TAIL(&pmp->pmp_req_sizepark, &pspark, pkso_entries); 1549 1550 /* then fill in actual request and shoot it off */ 1551 fcnioctl_arg.pvnr_command = ap->a_command; 1552 fcnioctl_arg.pvnr_fflag = ap->a_fflag; 1553 puffs_credcvt(&fcnioctl_arg.pvnr_cred, ap->a_cred); 1554 fcnioctl_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 1555 1556 error = puffs_vntouser_req(MPTOPUFFSMP(ap->a_vp->v_mount), puffsop, 1557 &fcnioctl_arg, sizeof(fcnioctl_arg), VPTOPNC(ap->a_vp), 1558 pspark.pkso_reqid, NULL, NULL); 1559 1560 /* if we don't need to copy data, we're done */ 1561 if (error || !fcnioctl_arg.pvnr_copyback) 1562 return error; 1563 1564 copylen = MIN(FCNIOCTL_ARG_MAX, fcnioctl_arg.pvnr_datalen); 1565 kernbuf = malloc(copylen, M_PUFFS, M_WAITOK); 1566 error = copyin(fcnioctl_arg.pvnr_data, kernbuf, copylen); 1567 if (error) 1568 goto out; 1569 error = copyout(kernbuf, ap->a_data, copylen); 1570 1571 out: 1572 free(kernbuf, M_PUFFS); 1573 return error; 1574 #endif 1575 } 1576 1577 int 1578 puffs_ioctl(void *v) 1579 { 1580 1581 return puffs_fcnioctl(v, PUFFS_VN_IOCTL); 1582 } 1583 1584 int 1585 puffs_fcntl(void *v) 1586 { 1587 1588 return puffs_fcnioctl(v, PUFFS_VN_FCNTL); 1589 } 1590 1591 int 1592 puffs_print(void *v) 1593 { 1594 struct vop_print_args /* { 1595 struct vnode *a_vp; 1596 } */ *ap = v; 1597 struct puffs_mount *pmp; 1598 struct vnode *vp = ap->a_vp; 1599 struct puffs_node *pn = vp->v_data; 1600 1601 PUFFS_VNREQ(print); 1602 1603 pmp = MPTOPUFFSMP(vp->v_mount); 1604 1605 /* kernel portion */ 1606 printf("tag VT_PUFFS, vnode %p, puffs node: %p,\n" 1607 " userspace cookie: %p\n", vp, pn, pn->pn_cookie); 1608 if (vp->v_type == VFIFO) 1609 fifo_printinfo(vp); 1610 lockmgr_printinfo(&vp->v_lock); 1611 1612 /* userspace portion */ 1613 if (EXISTSOP(pmp, PRINT)) 1614 puffs_vntouser(pmp, PUFFS_VN_PRINT, 1615 &print_arg, sizeof(print_arg), VPTOPNC(ap->a_vp), 1616 LOCKEDVP(ap->a_vp), NULL); 1617 1618 return 0; 1619 } 1620 1621 int 1622 puffs_pathconf(void *v) 1623 { 1624 struct vop_pathconf_args /* { 1625 const struct vnodeop_desc *a_desc; 1626 struct vnode *a_vp; 1627 int a_name; 1628 register_t *a_retval; 1629 } */ *ap = v; 1630 int error; 1631 1632 PUFFS_VNREQ(pathconf); 1633 1634 pathconf_arg.pvnr_name = ap->a_name; 1635 1636 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1637 PUFFS_VN_PATHCONF, &pathconf_arg, sizeof(pathconf_arg), 1638 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1639 if (error) 1640 return error; 1641 1642 *ap->a_retval = pathconf_arg.pvnr_retval; 1643 1644 return 0; 1645 } 1646 1647 int 1648 puffs_advlock(void *v) 1649 { 1650 struct vop_advlock_args /* { 1651 const struct vnodeop_desc *a_desc; 1652 struct vnode *a_vp; 1653 void *a_id; 1654 int a_op; 1655 struct flock *a_fl; 1656 int a_flags; 1657 } */ *ap = v; 1658 int error; 1659 1660 PUFFS_VNREQ(advlock); 1661 1662 error = copyin(ap->a_fl, &advlock_arg.pvnr_fl, sizeof(struct flock)); 1663 if (error) 1664 return error; 1665 advlock_arg.pvnr_id = ap->a_id; 1666 advlock_arg.pvnr_op = ap->a_op; 1667 advlock_arg.pvnr_flags = ap->a_flags; 1668 1669 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_ADVLOCK, 1670 &advlock_arg, sizeof(advlock_arg), VPTOPNC(ap->a_vp), NULL, NULL); 1671 } 1672 /* 1673 * This maps itself to PUFFS_VN_READ/WRITE for data transfer. 1674 */ 1675 int 1676 puffs_strategy(void *v) 1677 { 1678 struct vop_strategy_args /* { 1679 const struct vnodeop_desc *a_desc; 1680 struct vnode *a_vp; 1681 struct buf *a_bp; 1682 } */ *ap = v; 1683 struct puffs_mount *pmp; 1684 struct puffs_vnreq_read *read_argp = NULL; 1685 struct puffs_vnreq_write *write_argp = NULL; 1686 struct buf *bp; 1687 size_t argsize; 1688 size_t tomove, moved; 1689 int error; 1690 1691 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1692 bp = ap->a_bp; 1693 1694 if ((bp->b_flags & B_READ) && !EXISTSOP(pmp, READ)) 1695 return EOPNOTSUPP; 1696 if ((bp->b_flags & B_WRITE) && !EXISTSOP(pmp, WRITE)) 1697 return EOPNOTSUPP; 1698 1699 #ifdef DIAGNOSTIC 1700 if (bp->b_resid > pmp->pmp_req_maxsize - PUFFS_REQSTRUCT_MAX) 1701 panic("puffs_strategy: wildly inappropriate buf resid %d", 1702 bp->b_resid); 1703 #endif 1704 1705 if (bp->b_flags & B_READ) { 1706 argsize = sizeof(struct puffs_vnreq_read); 1707 read_argp = malloc(argsize, M_PUFFS, M_NOWAIT | M_ZERO); 1708 if (read_argp == NULL) { 1709 error = ENOMEM; 1710 goto out; 1711 } 1712 1713 tomove = PUFFS_TOMOVE(bp->b_resid, pmp); 1714 1715 read_argp->pvnr_ioflag = 0; 1716 read_argp->pvnr_resid = tomove; 1717 read_argp->pvnr_offset = bp->b_blkno << DEV_BSHIFT; 1718 puffs_credcvt(&read_argp->pvnr_cred, FSCRED); 1719 1720 error = puffs_vntouser_adjbuf(pmp, PUFFS_VN_READ, 1721 (void **)&read_argp, &argsize, 1722 read_argp->pvnr_resid, VPTOPNC(ap->a_vp), 1723 LOCKEDVP(ap->a_vp), NULL); 1724 1725 if (error) 1726 goto out; 1727 1728 if (read_argp->pvnr_resid > tomove) { 1729 error = EINVAL; 1730 goto out; 1731 } 1732 1733 moved = tomove - read_argp->pvnr_resid; 1734 1735 (void)memcpy(bp->b_data, read_argp->pvnr_data, moved); 1736 bp->b_resid -= moved; 1737 } else { 1738 argsize = sizeof(struct puffs_vnreq_write) + bp->b_bcount; 1739 write_argp = malloc(argsize, M_PUFFS, M_NOWAIT | M_ZERO); 1740 if (write_argp == NULL) { 1741 error = ENOMEM; 1742 goto out; 1743 } 1744 1745 tomove = PUFFS_TOMOVE(bp->b_resid, pmp); 1746 1747 write_argp->pvnr_ioflag = 0; 1748 write_argp->pvnr_resid = tomove; 1749 write_argp->pvnr_offset = bp->b_blkno << DEV_BSHIFT; 1750 puffs_credcvt(&write_argp->pvnr_cred, FSCRED); 1751 1752 (void)memcpy(&write_argp->pvnr_data, bp->b_data, tomove); 1753 1754 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1755 PUFFS_VN_WRITE, write_argp, argsize, 1756 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1757 if (error) 1758 goto out; 1759 1760 moved = write_argp->pvnr_resid - tomove; 1761 1762 if (write_argp->pvnr_resid > tomove) { 1763 error = EINVAL; 1764 goto out; 1765 } 1766 1767 bp->b_resid -= moved; 1768 if (write_argp->pvnr_resid != 0) 1769 error = EIO; 1770 } 1771 1772 out: 1773 if (read_argp) 1774 free(read_argp, M_PUFFS); 1775 if (write_argp) 1776 free(write_argp, M_PUFFS); 1777 1778 biodone(ap->a_bp); 1779 return error; 1780 } 1781 1782 int 1783 puffs_mmap(void *v) 1784 { 1785 struct vop_mmap_args /* { 1786 const struct vnodeop_desc *a_desc; 1787 struct vnode *a_vp; 1788 int a_fflags; 1789 kauth_cred_t a_cred; 1790 struct lwp *a_l; 1791 } */ *ap = v; 1792 struct puffs_mount *pmp; 1793 int error; 1794 1795 PUFFS_VNREQ(mmap); 1796 1797 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1798 1799 if (!PUFFS_DOCACHE(pmp)) 1800 return genfs_eopnotsupp(v); 1801 1802 if (EXISTSOP(pmp, MMAP)) { 1803 mmap_arg.pvnr_fflags = ap->a_fflags; 1804 puffs_credcvt(&mmap_arg.pvnr_cred, ap->a_cred); 1805 mmap_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 1806 1807 error = puffs_vntouser(pmp, PUFFS_VN_MMAP, 1808 &mmap_arg, sizeof(mmap_arg), 1809 VPTOPNC(ap->a_vp), NULL, NULL); 1810 } else { 1811 error = genfs_mmap(v); 1812 } 1813 1814 return error; 1815 } 1816 1817 1818 /* 1819 * The rest don't get a free trip to userspace and back, they 1820 * have to stay within the kernel. 1821 */ 1822 1823 /* 1824 * bmap doesn't really make any sense for puffs, so just 1:1 map it. 1825 * well, maybe somehow, somewhere, some day .... 1826 */ 1827 int 1828 puffs_bmap(void *v) 1829 { 1830 struct vop_bmap_args /* { 1831 const struct vnodeop_desc *a_desc; 1832 struct vnode *a_vp; 1833 daddr_t a_bn; 1834 struct vnode **a_vpp; 1835 daddr_t *a_bnp; 1836 int *a_runp; 1837 } */ *ap = v; 1838 struct puffs_mount *pmp; 1839 1840 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1841 1842 if (ap->a_vpp) 1843 *ap->a_vpp = ap->a_vp; 1844 if (ap->a_bnp) 1845 *ap->a_bnp = ap->a_bn; 1846 if (ap->a_runp) 1847 *ap->a_runp = pmp->pmp_req_maxsize - PUFFS_REQSTRUCT_MAX; 1848 1849 return 0; 1850 } 1851 1852 /* 1853 * moreXXX: yes, todo 1854 */ 1855 int 1856 puffs_lock(void *v) 1857 { 1858 struct vop_lock_args /* { 1859 struct vnode *a_vp; 1860 int a_flags; 1861 }*/ *ap = v; 1862 struct vnode *vp = ap->a_vp; 1863 1864 #if 0 1865 DPRINTF(("puffs_lock: lock %p, args 0x%x\n", vp, ap->a_flags)); 1866 #endif 1867 1868 return lockmgr(&vp->v_lock, ap->a_flags, &vp->v_interlock); 1869 } 1870 1871 int 1872 puffs_unlock(void *v) 1873 { 1874 struct vop_unlock_args /* { 1875 struct vnode *a_vp; 1876 int a_flags; 1877 } */ *ap = v; 1878 struct vnode *vp = ap->a_vp; 1879 1880 #if 0 1881 DPRINTF(("puffs_unlock: lock %p, args 0x%x\n", vp, ap->a_flags)); 1882 #endif 1883 1884 return lockmgr(&vp->v_lock, ap->a_flags | LK_RELEASE, &vp->v_interlock); 1885 } 1886 1887 int 1888 puffs_islocked(void *v) 1889 { 1890 struct vop_islocked_args *ap = v; 1891 int rv; 1892 1893 rv = lockstatus(&ap->a_vp->v_lock); 1894 return rv; 1895 } 1896 1897 int 1898 puffs_generic(void *v) 1899 { 1900 struct vop_generic_args *ap = v; 1901 1902 (void)ap; 1903 DPRINTF(("puffs_generic: ap->a_desc = %s\n", ap->a_desc->vdesc_name)); 1904 1905 return EOPNOTSUPP; 1906 } 1907 1908 1909 /* 1910 * spec & fifo. These call the micsfs spec and fifo vectors, but issue 1911 * FAF update information for the puffs node first. 1912 */ 1913 int 1914 puffs_spec_read(void *v) 1915 { 1916 struct vop_read_args /* { 1917 const struct vnodeop_desc *a_desc; 1918 struct vnode *a_vp; 1919 struct uio *a_uio; 1920 int a_ioflag; 1921 kauth_cred_t a_cred; 1922 } */ *ap = v; 1923 1924 puffs_updatenode(ap->a_vp, PUFFS_UPDATEATIME); 1925 return VOCALL(spec_vnodeop_p, VOFFSET(vop_read), v); 1926 } 1927 1928 int 1929 puffs_spec_write(void *v) 1930 { 1931 struct vop_write_args /* { 1932 const struct vnodeop_desc *a_desc; 1933 struct vnode *a_vp; 1934 struct uio *a_uio; 1935 int a_ioflag; 1936 kauth_cred_t a_cred; 1937 }*/ *ap = v; 1938 1939 puffs_updatenode(ap->a_vp, PUFFS_UPDATEMTIME); 1940 return VOCALL(spec_vnodeop_p, VOFFSET(vop_write), v); 1941 } 1942 1943 int 1944 puffs_fifo_read(void *v) 1945 { 1946 struct vop_read_args /* { 1947 const struct vnodeop_desc *a_desc; 1948 struct vnode *a_vp; 1949 struct uio *a_uio; 1950 int a_ioflag; 1951 kauth_cred_t a_cred; 1952 } */ *ap = v; 1953 1954 puffs_updatenode(ap->a_vp, PUFFS_UPDATEATIME); 1955 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), v); 1956 } 1957 1958 int 1959 puffs_fifo_write(void *v) 1960 { 1961 struct vop_write_args /* { 1962 const struct vnodeop_desc *a_desc; 1963 struct vnode *a_vp; 1964 struct uio *a_uio; 1965 int a_ioflag; 1966 kauth_cred_t a_cred; 1967 }*/ *ap = v; 1968 1969 puffs_updatenode(ap->a_vp, PUFFS_UPDATEMTIME); 1970 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), v); 1971 } 1972
Indexes created Thu Oct 02 01:09:59 GMT 2025