puffs_vnops.c revision 1.34
1 /* $NetBSD: puffs_vnops.c,v 1.34 2007/01/16 21:58:49 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 1.34 2007/01/16 21:58:49 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_reclaim(void *); 60 int puffs_readdir(void *); 61 int puffs_poll(void *); 62 int puffs_fsync(void *); 63 int puffs_seek(void *); 64 int puffs_remove(void *); 65 int puffs_mkdir(void *); 66 int puffs_rmdir(void *); 67 int puffs_link(void *); 68 int puffs_readlink(void *); 69 int puffs_symlink(void *); 70 int puffs_rename(void *); 71 int puffs_read(void *); 72 int puffs_write(void *); 73 int puffs_fcntl(void *); 74 int puffs_ioctl(void *); 75 int puffs_inactive(void *); 76 int puffs_print(void *); 77 int puffs_pathconf(void *); 78 int puffs_advlock(void *); 79 int puffs_strategy(void *); 80 int puffs_bmap(void *); 81 int puffs_mmap(void *); 82 83 int puffs_spec_read(void *); 84 int puffs_spec_write(void *); 85 int puffs_fifo_read(void *); 86 int puffs_fifo_write(void *); 87 88 int puffs_checkop(void *); 89 90 91 /* VOP_LEASE() not included */ 92 93 int puffs_generic(void *); 94 95 #if 0 96 #define puffs_lock genfs_lock 97 #define puffs_unlock genfs_unlock 98 #define puffs_islocked genfs_islocked 99 #else 100 int puffs_lock(void *); 101 int puffs_unlock(void *); 102 int puffs_islocked(void *); 103 #endif 104 105 int (**puffs_vnodeop_p)(void *); 106 const struct vnodeopv_entry_desc puffs_vnodeop_entries[] = { 107 { &vop_default_desc, vn_default_error }, 108 { &vop_lookup_desc, puffs_lookup }, /* REAL lookup */ 109 { &vop_create_desc, puffs_checkop }, /* create */ 110 { &vop_mknod_desc, puffs_checkop }, /* mknod */ 111 { &vop_open_desc, puffs_checkop }, /* open */ 112 { &vop_close_desc, puffs_checkop }, /* close */ 113 { &vop_access_desc, puffs_checkop }, /* access */ 114 { &vop_getattr_desc, puffs_checkop }, /* getattr */ 115 { &vop_setattr_desc, puffs_checkop }, /* setattr */ 116 { &vop_read_desc, puffs_checkop }, /* read */ 117 { &vop_write_desc, puffs_checkop }, /* write */ 118 { &vop_fcntl_desc, puffs_checkop }, /* fcntl */ 119 { &vop_ioctl_desc, puffs_checkop }, /* ioctl */ 120 { &vop_fsync_desc, puffs_fsync }, /* REAL fsync */ 121 { &vop_seek_desc, puffs_checkop }, /* seek */ 122 { &vop_remove_desc, puffs_checkop }, /* remove */ 123 { &vop_link_desc, puffs_checkop }, /* link */ 124 { &vop_rename_desc, puffs_checkop }, /* rename */ 125 { &vop_mkdir_desc, puffs_checkop }, /* mkdir */ 126 { &vop_rmdir_desc, puffs_checkop }, /* rmdir */ 127 { &vop_symlink_desc, puffs_checkop }, /* symlink */ 128 { &vop_readdir_desc, puffs_checkop }, /* readdir */ 129 { &vop_readlink_desc, puffs_checkop }, /* readlink */ 130 { &vop_getpages_desc, puffs_checkop }, /* getpages */ 131 { &vop_putpages_desc, puffs_checkop }, /* putpages */ 132 { &vop_pathconf_desc, puffs_checkop }, /* pathconf */ 133 { &vop_advlock_desc, puffs_checkop }, /* advlock */ 134 { &vop_strategy_desc, puffs_strategy }, /* REAL strategy */ 135 { &vop_revoke_desc, genfs_revoke }, /* REAL revoke */ 136 { &vop_abortop_desc, genfs_abortop }, /* REAL abortop */ 137 { &vop_inactive_desc, puffs_inactive }, /* REAL inactive */ 138 { &vop_reclaim_desc, puffs_reclaim }, /* REAL reclaim */ 139 { &vop_lock_desc, puffs_lock }, /* REAL lock */ 140 { &vop_unlock_desc, puffs_unlock }, /* REAL unlock */ 141 { &vop_bmap_desc, puffs_bmap }, /* REAL bmap */ 142 { &vop_print_desc, puffs_print }, /* REAL print */ 143 { &vop_islocked_desc, puffs_islocked }, /* REAL islocked */ 144 { &vop_bwrite_desc, genfs_nullop }, /* REAL bwrite */ 145 { &vop_mmap_desc, puffs_mmap }, /* REAL mmap */ 146 147 { &vop_poll_desc, genfs_eopnotsupp }, /* poll XXX */ 148 { &vop_poll_desc, genfs_eopnotsupp }, /* kqfilter XXX */ 149 { NULL, NULL } 150 }; 151 const struct vnodeopv_desc puffs_vnodeop_opv_desc = 152 { &puffs_vnodeop_p, puffs_vnodeop_entries }; 153 154 155 int (**puffs_specop_p)(void *); 156 const struct vnodeopv_entry_desc puffs_specop_entries[] = { 157 { &vop_default_desc, vn_default_error }, 158 { &vop_lookup_desc, spec_lookup }, /* lookup, ENOTDIR */ 159 { &vop_create_desc, spec_create }, /* genfs_badop */ 160 { &vop_mknod_desc, spec_mknod }, /* genfs_badop */ 161 { &vop_open_desc, spec_open }, /* spec_open */ 162 { &vop_close_desc, spec_close }, /* spec_close */ 163 { &vop_access_desc, puffs_checkop }, /* access */ 164 { &vop_getattr_desc, puffs_checkop }, /* getattr */ 165 { &vop_setattr_desc, puffs_checkop }, /* setattr */ 166 { &vop_read_desc, puffs_spec_read }, /* update, read */ 167 { &vop_write_desc, puffs_spec_write }, /* update, write */ 168 { &vop_lease_desc, spec_lease_check }, /* genfs_nullop */ 169 { &vop_ioctl_desc, spec_ioctl }, /* spec_ioctl */ 170 { &vop_fcntl_desc, genfs_fcntl }, /* dummy */ 171 { &vop_poll_desc, spec_poll }, /* spec_poll */ 172 { &vop_kqfilter_desc, spec_kqfilter }, /* spec_kqfilter */ 173 { &vop_revoke_desc, spec_revoke }, /* genfs_revoke */ 174 { &vop_mmap_desc, spec_mmap }, /* genfs_mmap (dummy) */ 175 { &vop_fsync_desc, spec_fsync }, /* vflushbuf */ 176 { &vop_seek_desc, spec_seek }, /* genfs_nullop */ 177 { &vop_remove_desc, spec_remove }, /* genfs_badop */ 178 { &vop_link_desc, spec_link }, /* genfs_badop */ 179 { &vop_rename_desc, spec_rename }, /* genfs_badop */ 180 { &vop_mkdir_desc, spec_mkdir }, /* genfs_badop */ 181 { &vop_rmdir_desc, spec_rmdir }, /* genfs_badop */ 182 { &vop_symlink_desc, spec_symlink }, /* genfs_badop */ 183 { &vop_readdir_desc, spec_readdir }, /* genfs_badop */ 184 { &vop_readlink_desc, spec_readlink }, /* genfs_badop */ 185 { &vop_abortop_desc, spec_abortop }, /* genfs_badop */ 186 { &vop_inactive_desc, puffs_inactive }, /* REAL inactive */ 187 { &vop_reclaim_desc, puffs_reclaim }, /* REAL reclaim */ 188 { &vop_lock_desc, puffs_lock }, /* REAL lock */ 189 { &vop_unlock_desc, puffs_unlock }, /* REAL unlock */ 190 { &vop_bmap_desc, spec_bmap }, /* dummy */ 191 { &vop_strategy_desc, spec_strategy }, /* dev strategy */ 192 { &vop_print_desc, puffs_print }, /* REAL print */ 193 { &vop_islocked_desc, puffs_islocked }, /* REAL islocked */ 194 { &vop_pathconf_desc, spec_pathconf }, /* pathconf */ 195 { &vop_advlock_desc, spec_advlock }, /* lf_advlock */ 196 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 197 { &vop_getpages_desc, spec_getpages }, /* genfs_getpages */ 198 { &vop_putpages_desc, spec_putpages }, /* genfs_putpages */ 199 #if 0 200 { &vop_openextattr_desc, _openextattr }, /* openextattr */ 201 { &vop_closeextattr_desc, _closeextattr }, /* closeextattr */ 202 { &vop_getextattr_desc, _getextattr }, /* getextattr */ 203 { &vop_setextattr_desc, _setextattr }, /* setextattr */ 204 { &vop_listextattr_desc, _listextattr }, /* listextattr */ 205 { &vop_deleteextattr_desc, _deleteextattr }, /* deleteextattr */ 206 #endif 207 { NULL, NULL } 208 }; 209 const struct vnodeopv_desc puffs_specop_opv_desc = 210 { &puffs_specop_p, puffs_specop_entries }; 211 212 213 int (**puffs_fifoop_p)(void *); 214 const struct vnodeopv_entry_desc puffs_fifoop_entries[] = { 215 { &vop_default_desc, vn_default_error }, 216 { &vop_lookup_desc, fifo_lookup }, /* lookup, ENOTDIR */ 217 { &vop_create_desc, fifo_create }, /* genfs_badop */ 218 { &vop_mknod_desc, fifo_mknod }, /* genfs_badop */ 219 { &vop_open_desc, fifo_open }, /* open */ 220 { &vop_close_desc, fifo_close }, /* close */ 221 { &vop_access_desc, puffs_checkop }, /* access */ 222 { &vop_getattr_desc, puffs_checkop }, /* getattr */ 223 { &vop_setattr_desc, puffs_checkop }, /* setattr */ 224 { &vop_read_desc, puffs_fifo_read }, /* read, update */ 225 { &vop_write_desc, puffs_fifo_write }, /* write, update */ 226 { &vop_lease_desc, fifo_lease_check }, /* genfs_nullop */ 227 { &vop_ioctl_desc, fifo_ioctl }, /* ioctl */ 228 { &vop_fcntl_desc, genfs_fcntl }, /* dummy */ 229 { &vop_poll_desc, fifo_poll }, /* poll */ 230 { &vop_kqfilter_desc, fifo_kqfilter }, /* kqfilter */ 231 { &vop_revoke_desc, fifo_revoke }, /* genfs_revoke */ 232 { &vop_mmap_desc, fifo_mmap }, /* genfs_badop */ 233 { &vop_fsync_desc, puffs_checkop }, /* fsync */ 234 { &vop_seek_desc, fifo_seek }, /* genfs_badop */ 235 { &vop_remove_desc, fifo_remove }, /* genfs_badop */ 236 { &vop_link_desc, fifo_link }, /* genfs_badop */ 237 { &vop_rename_desc, fifo_rename }, /* genfs_badop */ 238 { &vop_mkdir_desc, fifo_mkdir }, /* genfs_badop */ 239 { &vop_rmdir_desc, fifo_rmdir }, /* genfs_badop */ 240 { &vop_symlink_desc, fifo_symlink }, /* genfs_badop */ 241 { &vop_readdir_desc, fifo_readdir }, /* genfs_badop */ 242 { &vop_readlink_desc, fifo_readlink }, /* genfs_badop */ 243 { &vop_abortop_desc, fifo_abortop }, /* genfs_badop */ 244 { &vop_inactive_desc, puffs_inactive }, /* REAL inactive */ 245 { &vop_reclaim_desc, puffs_reclaim }, /* REAL reclaim */ 246 { &vop_lock_desc, puffs_lock }, /* REAL lock */ 247 { &vop_unlock_desc, puffs_unlock }, /* REAL unlock */ 248 { &vop_bmap_desc, fifo_bmap }, /* dummy */ 249 { &vop_strategy_desc, fifo_strategy }, /* genfs_badop */ 250 { &vop_print_desc, puffs_print }, /* REAL print */ 251 { &vop_islocked_desc, puffs_islocked }, /* REAL islocked */ 252 { &vop_pathconf_desc, fifo_pathconf }, /* pathconf */ 253 { &vop_advlock_desc, fifo_advlock }, /* genfs_einval */ 254 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 255 { &vop_putpages_desc, fifo_putpages }, /* genfs_null_putpages*/ 256 #if 0 257 { &vop_openextattr_desc, _openextattr }, /* openextattr */ 258 { &vop_closeextattr_desc, _closeextattr }, /* closeextattr */ 259 { &vop_getextattr_desc, _getextattr }, /* getextattr */ 260 { &vop_setextattr_desc, _setextattr }, /* setextattr */ 261 { &vop_listextattr_desc, _listextattr }, /* listextattr */ 262 { &vop_deleteextattr_desc, _deleteextattr }, /* deleteextattr */ 263 #endif 264 { NULL, NULL } 265 }; 266 const struct vnodeopv_desc puffs_fifoop_opv_desc = 267 { &puffs_fifoop_p, puffs_fifoop_entries }; 268 269 270 /* "real" vnode operations */ 271 int (**puffs_msgop_p)(void *); 272 const struct vnodeopv_entry_desc puffs_msgop_entries[] = { 273 { &vop_default_desc, vn_default_error }, 274 { &vop_create_desc, puffs_create }, /* create */ 275 { &vop_mknod_desc, puffs_mknod }, /* mknod */ 276 { &vop_open_desc, puffs_open }, /* open */ 277 { &vop_close_desc, puffs_close }, /* close */ 278 { &vop_access_desc, puffs_access }, /* access */ 279 { &vop_getattr_desc, puffs_getattr }, /* getattr */ 280 { &vop_setattr_desc, puffs_setattr }, /* setattr */ 281 { &vop_read_desc, puffs_read }, /* read */ 282 { &vop_write_desc, puffs_write }, /* write */ 283 { &vop_fcntl_desc, puffs_fcntl }, /* fcntl */ 284 { &vop_ioctl_desc, puffs_ioctl }, /* ioctl */ 285 { &vop_fsync_desc, puffs_fsync }, /* fsync */ 286 { &vop_seek_desc, puffs_seek }, /* seek */ 287 { &vop_remove_desc, puffs_remove }, /* remove */ 288 { &vop_link_desc, puffs_link }, /* link */ 289 { &vop_rename_desc, puffs_rename }, /* rename */ 290 { &vop_mkdir_desc, puffs_mkdir }, /* mkdir */ 291 { &vop_rmdir_desc, puffs_rmdir }, /* rmdir */ 292 { &vop_symlink_desc, puffs_symlink }, /* symlink */ 293 { &vop_readdir_desc, puffs_readdir }, /* readdir */ 294 { &vop_readlink_desc, puffs_readlink }, /* readlink */ 295 { &vop_print_desc, puffs_print }, /* print */ 296 { &vop_islocked_desc, puffs_islocked }, /* islocked */ 297 { &vop_pathconf_desc, puffs_pathconf }, /* pathconf */ 298 { &vop_advlock_desc, puffs_advlock }, /* advlock */ 299 { &vop_getpages_desc, genfs_getpages }, /* getpages */ 300 { &vop_putpages_desc, genfs_putpages }, /* putpages */ 301 { NULL, NULL } 302 }; 303 const struct vnodeopv_desc puffs_msgop_opv_desc = 304 { &puffs_msgop_p, puffs_msgop_entries }; 305 306 307 #define LOCKEDVP(a) (VOP_ISLOCKED(a) ? (a) : NULL) 308 309 310 /* 311 * This is a generic vnode operation handler. It checks if the necessary 312 * operations for the called vnode operation are implemented by userspace 313 * and either returns a dummy return value or proceeds to call the real 314 * vnode operation from puffs_msgop_v. 315 * 316 * XXX: this should described elsewhere and autogenerated, the complexity 317 * of the vnode operations vectors and their interrelationships is also 318 * getting a bit out of hand. Another problem is that we need this same 319 * information in the fs server code, so keeping the two in sync manually 320 * is not a viable (long term) plan. 321 */ 322 323 /* not supported, handle locking protocol */ 324 #define CHECKOP_NOTSUPP(op) \ 325 case VOP_##op##_DESCOFFSET: \ 326 if (pmp->pmp_vnopmask[PUFFS_VN_##op] == 0) \ 327 return genfs_eopnotsupp(v); \ 328 break 329 330 /* always succeed, no locking */ 331 #define CHECKOP_SUCCESS(op) \ 332 case VOP_##op##_DESCOFFSET: \ 333 if (pmp->pmp_vnopmask[PUFFS_VN_##op] == 0) \ 334 return 0; \ 335 break 336 337 int 338 puffs_checkop(void *v) 339 { 340 struct vop_generic_args /* { 341 struct vnodeop_desc *a_desc; 342 spooky mystery contents; 343 } */ *ap = v; 344 struct vnodeop_desc *desc = ap->a_desc; 345 struct puffs_mount *pmp; 346 struct vnode *vp; 347 int offset; 348 349 DPRINTF_VERBOSE(("checkop call %s (%d)\n", 350 ap->a_desc->vdesc_name, ap->a_desc->vdesc_offset)); 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 if ((pmp->pmp_flags & PUFFS_KFLAG_ALLOPS) == 0) { 361 switch (desc->vdesc_offset) { 362 CHECKOP_NOTSUPP(CREATE); 363 CHECKOP_NOTSUPP(MKNOD); 364 CHECKOP_NOTSUPP(GETATTR); 365 CHECKOP_NOTSUPP(SETATTR); 366 CHECKOP_NOTSUPP(READ); 367 CHECKOP_NOTSUPP(WRITE); 368 CHECKOP_NOTSUPP(FCNTL); 369 CHECKOP_NOTSUPP(IOCTL); 370 CHECKOP_NOTSUPP(REMOVE); 371 CHECKOP_NOTSUPP(LINK); 372 CHECKOP_NOTSUPP(RENAME); 373 CHECKOP_NOTSUPP(MKDIR); 374 CHECKOP_NOTSUPP(RMDIR); 375 CHECKOP_NOTSUPP(SYMLINK); 376 CHECKOP_NOTSUPP(READDIR); 377 CHECKOP_NOTSUPP(READLINK); 378 CHECKOP_NOTSUPP(PRINT); 379 CHECKOP_NOTSUPP(PATHCONF); 380 CHECKOP_NOTSUPP(ADVLOCK); 381 382 CHECKOP_SUCCESS(OPEN); 383 CHECKOP_SUCCESS(CLOSE); 384 CHECKOP_SUCCESS(ACCESS); 385 CHECKOP_SUCCESS(SEEK); 386 387 /* XXXfixme: read w/o write && cache == bad bad bad */ 388 case VOP_GETPAGES_DESCOFFSET: 389 if (!EXISTSOP(pmp, READ)) 390 return genfs_eopnotsupp(v); 391 break; 392 393 case VOP_PUTPAGES_DESCOFFSET: 394 if (!EXISTSOP(pmp, WRITE)) 395 return genfs_null_putpages(v); 396 break; 397 398 default: 399 panic("puffs_checkop: unhandled vnop %d", 400 desc->vdesc_offset); 401 } 402 } 403 404 return VOCALL(puffs_msgop_p, ap->a_desc->vdesc_offset, v); 405 } 406 407 408 int 409 puffs_lookup(void *v) 410 { 411 struct vop_lookup_args /* { 412 const struct vnodeop_desc *a_desc; 413 struct vnode *a_dvp; 414 struct vnode **a_vpp; 415 struct componentname *a_cnp; 416 } */ *ap = v; 417 struct puffs_mount *pmp; 418 struct componentname *cnp; 419 struct vnode *vp, *dvp; 420 struct puffs_node *dpn; 421 int isdot; 422 int error; 423 424 PUFFS_VNREQ(lookup); 425 426 pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 427 cnp = ap->a_cnp; 428 dvp = ap->a_dvp; 429 *ap->a_vpp = NULL; 430 431 /* first things first: check access */ 432 error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred, cnp->cn_lwp); 433 if (error) 434 return error; 435 436 isdot = cnp->cn_namelen == 1 && *cnp->cn_nameptr == '.'; 437 438 DPRINTF(("puffs_lookup: \"%s\", parent vnode %p, op: %lx\n", 439 cnp->cn_nameptr, dvp, cnp->cn_nameiop)); 440 441 /* 442 * Check if someone fed it into the cache 443 */ 444 if (PUFFS_DOCACHE(pmp)) { 445 error = cache_lookup(dvp, ap->a_vpp, cnp); 446 447 if (error >= 0) 448 return error; 449 } 450 451 if (isdot) { 452 vp = ap->a_dvp; 453 vref(vp); 454 *ap->a_vpp = vp; 455 return 0; 456 } 457 458 puffs_makecn(&lookup_arg.pvnr_cn, cnp); 459 460 if (cnp->cn_flags & ISDOTDOT) 461 VOP_UNLOCK(dvp, 0); 462 463 error = puffs_vntouser(pmp, PUFFS_VN_LOOKUP, 464 &lookup_arg, sizeof(lookup_arg), VPTOPNC(dvp), LOCKEDVP(dvp), NULL); 465 DPRINTF(("puffs_lookup: return of the userspace, part %d\n", error)); 466 467 /* 468 * In case of error, there is no new vnode to play with, so be 469 * happy with the NULL value given to vpp in the beginning. 470 * Also, check if this really was an error or the target was not 471 * present. Either treat it as a non-error for CREATE/RENAME or 472 * enter the component into the negative name cache (if desired). 473 */ 474 if (error) { 475 if (error == ENOENT) { 476 if ((cnp->cn_flags & ISLASTCN) 477 && (cnp->cn_nameiop == CREATE 478 || cnp->cn_nameiop == RENAME)) { 479 cnp->cn_flags |= SAVENAME; 480 error = EJUSTRETURN; 481 } else { 482 if ((cnp->cn_flags & MAKEENTRY) 483 && PUFFS_DOCACHE(pmp)) 484 cache_enter(dvp, NULL, cnp); 485 } 486 } 487 goto errout; 488 } 489 490 /* 491 * Check that we don't get our parent node back, that would cause 492 * a pretty obvious deadlock. 493 */ 494 dpn = dvp->v_data; 495 if (lookup_arg.pvnr_newnode == dpn->pn_cookie) { 496 error = EINVAL; 497 goto errout; 498 } 499 500 /* XXX: race here */ 501 /* XXX2: this check for node existence twice */ 502 vp = puffs_pnode2vnode(pmp, lookup_arg.pvnr_newnode, 1); 503 if (!vp) { 504 error = puffs_getvnode(dvp->v_mount, 505 lookup_arg.pvnr_newnode, lookup_arg.pvnr_vtype, 506 lookup_arg.pvnr_size, lookup_arg.pvnr_rdev, &vp); 507 if (error) { 508 goto errout; 509 } 510 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 511 } 512 *ap->a_vpp = vp; 513 514 if ((cnp->cn_flags & MAKEENTRY) != 0 && PUFFS_DOCACHE(pmp)) 515 cache_enter(dvp, vp, cnp); 516 517 errout: 518 if (cnp->cn_flags & ISDOTDOT) 519 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 520 521 return error; 522 } 523 524 int 525 puffs_create(void *v) 526 { 527 struct vop_create_args /* { 528 const struct vnodeop_desc *a_desc; 529 struct vnode *a_dvp; 530 struct vnode **a_vpp; 531 struct componentname *a_cnp; 532 struct vattr *a_vap; 533 } */ *ap = v; 534 int error; 535 536 PUFFS_VNREQ(create); 537 538 puffs_makecn(&create_arg.pvnr_cn, ap->a_cnp); 539 create_arg.pvnr_va = *ap->a_vap; 540 541 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_CREATE, 542 &create_arg, sizeof(create_arg), VPTOPNC(ap->a_dvp), 543 ap->a_dvp, NULL); 544 if (error) 545 goto out; 546 547 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 548 create_arg.pvnr_newnode, ap->a_cnp, ap->a_vap->va_type, 0); 549 550 out: 551 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 552 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 553 vput(ap->a_dvp); 554 return error; 555 } 556 557 int 558 puffs_mknod(void *v) 559 { 560 struct vop_mknod_args /* { 561 const struct vnodeop_desc *a_desc; 562 struct vnode *a_dvp; 563 struct vnode **a_vpp; 564 struct componentname *a_cnp; 565 struct vattr *a_vap; 566 } */ *ap = v; 567 int error; 568 569 PUFFS_VNREQ(mknod); 570 571 puffs_makecn(&mknod_arg.pvnr_cn, ap->a_cnp); 572 mknod_arg.pvnr_va = *ap->a_vap; 573 574 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_MKNOD, 575 &mknod_arg, sizeof(mknod_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 576 if (error) 577 goto out; 578 579 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 580 mknod_arg.pvnr_newnode, ap->a_cnp, ap->a_vap->va_type, 581 ap->a_vap->va_rdev); 582 583 out: 584 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 585 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 586 vput(ap->a_dvp); 587 return error; 588 } 589 590 int 591 puffs_open(void *v) 592 { 593 struct vop_open_args /* { 594 const struct vnodeop_desc *a_desc; 595 struct vnode *a_vp; 596 int a_mode; 597 kauth_cred_t a_cred; 598 struct lwp *a_l; 599 } */ *ap = v; 600 601 PUFFS_VNREQ(open); 602 603 open_arg.pvnr_mode = ap->a_mode; 604 puffs_credcvt(&open_arg.pvnr_cred, ap->a_cred); 605 open_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 606 607 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_OPEN, 608 &open_arg, sizeof(open_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 609 } 610 611 int 612 puffs_close(void *v) 613 { 614 struct vop_close_args /* { 615 const struct vnodeop_desc *a_desc; 616 struct vnode *a_vp; 617 int a_fflag; 618 kauth_cred_t a_cred; 619 struct lwp *a_l; 620 } */ *ap = v; 621 622 PUFFS_VNREQ(close); 623 624 close_arg.pvnr_fflag = ap->a_fflag; 625 puffs_credcvt(&close_arg.pvnr_cred, ap->a_cred); 626 close_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 627 628 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_CLOSE, 629 &close_arg, sizeof(close_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 630 } 631 632 int 633 puffs_access(void *v) 634 { 635 struct vop_access_args /* { 636 const struct vnodeop_desc *a_desc; 637 struct vnode *a_vp; 638 int a_mode; 639 kauth_cred_t a_cred; 640 struct lwp *a_l; 641 } */ *ap = v; 642 643 PUFFS_VNREQ(access); 644 645 access_arg.pvnr_mode = ap->a_mode; 646 access_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 647 puffs_credcvt(&access_arg.pvnr_cred, ap->a_cred); 648 649 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_ACCESS, 650 &access_arg, sizeof(access_arg), VPTOPNC(ap->a_vp), ap->a_vp, NULL); 651 } 652 653 int 654 puffs_getattr(void *v) 655 { 656 struct vop_getattr_args /* { 657 const struct vnodeop_desc *a_desc; 658 struct vnode *a_vp; 659 struct vattr *a_vap; 660 kauth_cred_t a_cred; 661 struct lwp *a_l; 662 } */ *ap = v; 663 struct mount *mp; 664 int error; 665 666 PUFFS_VNREQ(getattr); 667 668 mp = ap->a_vp->v_mount; 669 670 vattr_null(&getattr_arg.pvnr_va); 671 puffs_credcvt(&getattr_arg.pvnr_cred, ap->a_cred); 672 getattr_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 673 674 /* 675 * XXX + XX (dos equis): this can't go through the unlock/lock 676 * cycle, since it can be called from uvn_attach(), which fiddles 677 * around with VXLOCK and therefore breaks vn_lock(). Proper 678 * fix pending. 679 */ 680 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_GETATTR, 681 &getattr_arg, sizeof(getattr_arg), VPTOPNC(ap->a_vp), 682 NULL /* XXXseeabove: should be LOCKEDVP(ap->a_vp) */, NULL); 683 if (error) 684 return error; 685 686 (void)memcpy(ap->a_vap, &getattr_arg.pvnr_va, sizeof(struct vattr)); 687 688 /* 689 * fill in information userspace does not have 690 * XXX: but would it be better to do fsid at the generic level? 691 */ 692 ap->a_vap->va_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 693 694 return 0; 695 } 696 697 int 698 puffs_setattr(void *v) 699 { 700 struct vop_getattr_args /* { 701 const struct vnodeop_desc *a_desc; 702 struct vnode *a_vp; 703 struct vattr *a_vap; 704 kauth_cred_t a_cred; 705 struct lwp *a_l; 706 } */ *ap = v; 707 int error; 708 709 PUFFS_VNREQ(setattr); 710 711 (void)memcpy(&setattr_arg.pvnr_va, ap->a_vap, sizeof(struct vattr)); 712 puffs_credcvt(&setattr_arg.pvnr_cred, ap->a_cred); 713 setattr_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 714 715 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_SETATTR, 716 &setattr_arg, sizeof(setattr_arg), VPTOPNC(ap->a_vp), 717 ap->a_vp, NULL); 718 if (error) 719 return error; 720 721 if (ap->a_vap->va_size != VNOVAL) 722 uvm_vnp_setsize(ap->a_vp, ap->a_vap->va_size); 723 724 return 0; 725 } 726 727 int 728 puffs_inactive(void *v) 729 { 730 struct vop_inactive_args /* { 731 const struct vnodeop_desc *a_desc; 732 struct vnode *a_vp; 733 struct lwp *a_l; 734 } */ *ap = v; 735 struct puffs_mount *pmp; 736 struct puffs_node *pnode; 737 int rv, vnrefs; 738 739 PUFFS_VNREQ(inactive); 740 741 /* 742 * XXX: think about this after we really start unlocking 743 * when going to userspace 744 */ 745 pnode = ap->a_vp->v_data; 746 747 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 748 749 inactive_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 750 751 if (EXISTSOP(pmp, INACTIVE)) 752 rv = puffs_vntouser(pmp, PUFFS_VN_INACTIVE, 753 &inactive_arg, sizeof(inactive_arg), VPTOPNC(ap->a_vp), 754 ap->a_vp, NULL); 755 else 756 rv = 1; /* see below */ 757 758 /* can't trust userspace return value? simulate safe answer */ 759 if (rv) 760 vnrefs = 1; 761 else 762 vnrefs = inactive_arg.pvnr_backendrefs; 763 764 VOP_UNLOCK(ap->a_vp, 0); 765 766 /* 767 * user server thinks it's gone? then don't be afraid care, 768 * node's life was already all it would ever be 769 */ 770 if (vnrefs == 0) 771 vrecycle(ap->a_vp, NULL, ap->a_l); 772 773 return 0; 774 } 775 776 /* 777 * always FAF, we don't really care if the server wants to fail to 778 * reclaim the node or not 779 */ 780 int 781 puffs_reclaim(void *v) 782 { 783 struct vop_reclaim_args /* { 784 const struct vnodeop_desc *a_desc; 785 struct vnode *a_vp; 786 struct lwp *a_l; 787 } */ *ap = v; 788 struct puffs_mount *pmp; 789 struct puffs_vnreq_reclaim *reclaim_argp; 790 791 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 792 793 /* 794 * first things first: check if someone is trying to reclaim the 795 * root vnode. do not allow that to travel to userspace. 796 * Note that we don't need to take the lock similarly to 797 * puffs_root(), since there is only one of us. 798 */ 799 if (ap->a_vp->v_flag & VROOT) { 800 #ifdef DIAGNOSTIC 801 simple_lock(&pmp->pmp_lock); 802 if (pmp->pmp_root == NULL) 803 panic("puffs_reclaim: releasing root vnode (%p) twice", 804 ap->a_vp); 805 simple_unlock(&pmp->pmp_lock); 806 #endif 807 pmp->pmp_root = NULL; 808 goto out; 809 } 810 811 if (!EXISTSOP(pmp, RECLAIM)) 812 goto out; 813 814 reclaim_argp = malloc(sizeof(struct puffs_vnreq_reclaim), 815 M_PUFFS, M_WAITOK | M_ZERO); 816 reclaim_argp->pvnr_pid = puffs_lwp2pid(ap->a_l); 817 818 puffs_vntouser_faf(pmp, PUFFS_VN_RECLAIM, 819 reclaim_argp, sizeof(struct puffs_vnreq_reclaim), 820 VPTOPNC(ap->a_vp)); 821 822 out: 823 if (PUFFS_DOCACHE(pmp)) 824 cache_purge(ap->a_vp); 825 puffs_putvnode(ap->a_vp); 826 827 return 0; 828 } 829 830 int 831 puffs_readdir(void *v) 832 { 833 struct vop_readdir_args /* { 834 const struct vnodeop_desc *a_desc; 835 struct vnode *a_vp; 836 struct uio *a_uio; 837 kauth_cred_t a_cred; 838 int *a_eofflag; 839 off_t **a_cookies; 840 int *a_ncookies; 841 } */ *ap = v; 842 struct puffs_vnreq_readdir *readdir_argp; 843 size_t argsize; 844 struct uio *uio = ap->a_uio; 845 size_t howmuch; 846 int error; 847 848 /* worry about these later */ 849 if (!(ap->a_cookies == NULL && ap->a_ncookies == NULL)) 850 return EOPNOTSUPP; 851 852 argsize = sizeof(struct puffs_vnreq_readdir); 853 readdir_argp = malloc(argsize, M_PUFFS, M_ZERO | M_WAITOK); 854 855 puffs_credcvt(&readdir_argp->pvnr_cred, ap->a_cred); 856 readdir_argp->pvnr_offset = uio->uio_offset; 857 readdir_argp->pvnr_resid = uio->uio_resid; 858 859 error = puffs_vntouser_adjbuf(MPTOPUFFSMP(ap->a_vp->v_mount), 860 PUFFS_VN_READDIR, (void **)&readdir_argp, &argsize, 861 readdir_argp->pvnr_resid, VPTOPNC(ap->a_vp), ap->a_vp, NULL); 862 if (error) 863 goto out; 864 865 /* userspace is cheating? */ 866 if (readdir_argp->pvnr_resid > uio->uio_resid) { 867 error = EINVAL; 868 goto out; 869 } 870 871 /* bouncy-wouncy with the directory data */ 872 howmuch = uio->uio_resid - readdir_argp->pvnr_resid; 873 /* XXX: we could let userlandia tell its opinion first time 'round */ 874 if (howmuch == 0) { 875 *ap->a_eofflag = 1; 876 goto out; 877 } 878 error = uiomove(readdir_argp->pvnr_dent, howmuch, uio); 879 if (error) 880 goto out; 881 uio->uio_offset = readdir_argp->pvnr_offset; 882 883 out: 884 free(readdir_argp, M_PUFFS); 885 return error; 886 } 887 888 int 889 puffs_poll(void *v) 890 { 891 struct vop_poll_args /* { 892 const struct vnodeop_desc *a_desc; 893 struct vnode *a_vp; 894 int a_events; 895 struct lwp *a_l; 896 }*/ *ap = v; 897 898 PUFFS_VNREQ(poll); 899 900 poll_arg.pvnr_events = ap->a_events; 901 poll_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 902 903 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_POLL, 904 &poll_arg, sizeof(poll_arg), VPTOPNC(ap->a_vp), NULL, NULL); 905 } 906 907 int 908 puffs_fsync(void *v) 909 { 910 struct vop_fsync_args /* { 911 const struct vnodeop_desc *a_desc; 912 struct vnode *a_vp; 913 kauth_cred_t a_cred; 914 int a_flags; 915 off_t a_offlo; 916 off_t a_offhi; 917 struct lwp *a_l; 918 } */ *ap = v; 919 struct puffs_mount *pmp; 920 struct puffs_vnreq_fsync *fsync_argp; 921 struct vnode *vp; 922 int pflags, error; 923 924 PUFFS_VNREQ(fsync); 925 926 vp = ap->a_vp; 927 pmp = MPTOPUFFSMP(vp->v_mount); 928 929 pflags = PGO_CLEANIT; 930 if (ap->a_flags & FSYNC_WAIT) 931 pflags |= PGO_SYNCIO; 932 933 /* 934 * flush pages to avoid being overly dirty 935 */ 936 simple_lock(&vp->v_interlock); 937 error = VOP_PUTPAGES(vp, trunc_page(ap->a_offlo), 938 round_page(ap->a_offhi), pflags); 939 if (error) 940 return error; 941 942 /* 943 * HELLO! We exit already here if the user server does not 944 * support fsync. Otherwise we continue to issue fsync() 945 * forward. 946 */ 947 948 if (!EXISTSOP(pmp, FSYNC)) 949 return 0; 950 951 if (ap->a_flags & FSYNC_WAIT) { 952 fsync_argp = &fsync_arg; 953 } else { 954 fsync_argp = malloc(sizeof(struct puffs_vnreq_fsync), 955 M_PUFFS, M_ZERO | M_NOWAIT); 956 if (fsync_argp == NULL) 957 return ENOMEM; 958 } 959 960 puffs_credcvt(&fsync_argp->pvnr_cred, ap->a_cred); 961 fsync_argp->pvnr_flags = ap->a_flags; 962 fsync_argp->pvnr_offlo = ap->a_offlo; 963 fsync_argp->pvnr_offhi = ap->a_offhi; 964 fsync_argp->pvnr_pid = puffs_lwp2pid(ap->a_l); 965 966 /* 967 * XXX: see comment at puffs_getattr about locking 968 * 969 * If we are not required to wait, do a FAF operation. 970 * Otherwise block here. 971 */ 972 if (ap->a_flags & FSYNC_WAIT) { 973 error = puffs_vntouser(MPTOPUFFSMP(vp->v_mount), 974 PUFFS_VN_FSYNC, fsync_argp, sizeof(*fsync_argp), 975 VPTOPNC(vp), NULL /* XXXshouldbe: vp */, NULL); 976 } else { 977 /* FAF is always "succesful" */ 978 error = 0; 979 puffs_vntouser_faf(MPTOPUFFSMP(vp->v_mount), 980 PUFFS_VN_FSYNC, fsync_argp, sizeof(*fsync_argp), 981 VPTOPNC(vp)); 982 } 983 984 return error; 985 } 986 987 int 988 puffs_seek(void *v) 989 { 990 struct vop_seek_args /* { 991 const struct vnodeop_desc *a_desc; 992 struct vnode *a_vp; 993 off_t a_oldoff; 994 off_t a_newoff; 995 kauth_cred_t a_cred; 996 } */ *ap = v; 997 998 PUFFS_VNREQ(seek); 999 1000 seek_arg.pvnr_oldoff = ap->a_oldoff; 1001 seek_arg.pvnr_newoff = ap->a_newoff; 1002 puffs_credcvt(&seek_arg.pvnr_cred, ap->a_cred); 1003 1004 /* 1005 * XXX: seems like seek is called with an unlocked vp, but 1006 * it can't hurt to play safe 1007 */ 1008 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_SEEK, 1009 &seek_arg, sizeof(seek_arg), VPTOPNC(ap->a_vp), 1010 LOCKEDVP(ap->a_vp), NULL); 1011 } 1012 1013 int 1014 puffs_remove(void *v) 1015 { 1016 struct vop_remove_args /* { 1017 const struct vnodeop_desc *a_desc; 1018 struct vnode *a_dvp; 1019 struct vnode *a_vp; 1020 struct componentname *a_cnp; 1021 } */ *ap = v; 1022 int error; 1023 1024 PUFFS_VNREQ(remove); 1025 1026 remove_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1027 puffs_makecn(&remove_arg.pvnr_cn, ap->a_cnp); 1028 1029 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_REMOVE, 1030 &remove_arg, sizeof(remove_arg), VPTOPNC(ap->a_dvp), 1031 ap->a_dvp, ap->a_vp); 1032 1033 vput(ap->a_vp); 1034 if (ap->a_dvp == ap->a_vp) 1035 vrele(ap->a_dvp); 1036 else 1037 vput(ap->a_dvp); 1038 1039 return error; 1040 } 1041 1042 int 1043 puffs_mkdir(void *v) 1044 { 1045 struct vop_mkdir_args /* { 1046 const struct vnodeop_desc *a_desc; 1047 struct vnode *a_dvp; 1048 struct vnode **a_vpp; 1049 struct componentname *a_cnp; 1050 struct vattr *a_vap; 1051 } */ *ap = v; 1052 int error; 1053 1054 PUFFS_VNREQ(mkdir); 1055 1056 puffs_makecn(&mkdir_arg.pvnr_cn, ap->a_cnp); 1057 mkdir_arg.pvnr_va = *ap->a_vap; 1058 1059 /* XXX: wouldn't need to relock dvp, but that's life */ 1060 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_MKDIR, 1061 &mkdir_arg, sizeof(mkdir_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1062 if (error) 1063 goto out; 1064 1065 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 1066 mkdir_arg.pvnr_newnode, ap->a_cnp, VDIR, 0); 1067 1068 out: 1069 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 1070 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 1071 vput(ap->a_dvp); 1072 return error; 1073 } 1074 1075 int 1076 puffs_rmdir(void *v) 1077 { 1078 struct vop_rmdir_args /* { 1079 const struct vnodeop_desc *a_desc; 1080 struct vnode *a_dvp; 1081 struct vnode *a_vp; 1082 struct componentname *a_cnp; 1083 } */ *ap = v; 1084 int error; 1085 1086 PUFFS_VNREQ(rmdir); 1087 1088 rmdir_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1089 puffs_makecn(&rmdir_arg.pvnr_cn, ap->a_cnp); 1090 1091 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_RMDIR, 1092 &rmdir_arg, sizeof(rmdir_arg), VPTOPNC(ap->a_dvp), 1093 ap->a_dvp, ap->a_vp); 1094 1095 /* XXX: some call cache_purge() *for both vnodes* here, investigate */ 1096 1097 vput(ap->a_dvp); 1098 vput(ap->a_vp); 1099 1100 return error; 1101 } 1102 1103 int 1104 puffs_link(void *v) 1105 { 1106 struct vop_link_args /* { 1107 const struct vnodeop_desc *a_desc; 1108 struct vnode *a_dvp; 1109 struct vnode *a_vp; 1110 struct componentname *a_cnp; 1111 }*/ *ap = v; 1112 int error; 1113 1114 PUFFS_VNREQ(link); 1115 1116 link_arg.pvnr_cookie_targ = VPTOPNC(ap->a_vp); 1117 puffs_makecn(&link_arg.pvnr_cn, ap->a_cnp); 1118 1119 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), PUFFS_VN_LINK, 1120 &link_arg, sizeof(link_arg), VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1121 1122 vput(ap->a_dvp); 1123 1124 return error; 1125 } 1126 1127 int 1128 puffs_symlink(void *v) 1129 { 1130 struct vop_symlink_args /* { 1131 const struct vnodeop_desc *a_desc; 1132 struct vnode *a_dvp; 1133 struct vnode **a_vpp; 1134 struct componentname *a_cnp; 1135 struct vattr *a_vap; 1136 char *a_target; 1137 }*/ *ap = v; 1138 int error; 1139 1140 PUFFS_VNREQ(symlink); /* XXX: large structure */ 1141 1142 *ap->a_vpp = NULL; 1143 1144 puffs_makecn(&symlink_arg.pvnr_cn, ap->a_cnp); 1145 symlink_arg.pvnr_va = *ap->a_vap; 1146 (void)strlcpy(symlink_arg.pvnr_link, ap->a_target, 1147 sizeof(symlink_arg.pvnr_link)); 1148 1149 /* XXX: don't need to relock parent */ 1150 error = puffs_vntouser(MPTOPUFFSMP(ap->a_dvp->v_mount), 1151 PUFFS_VN_SYMLINK, &symlink_arg, sizeof(symlink_arg), 1152 VPTOPNC(ap->a_dvp), ap->a_dvp, NULL); 1153 if (error) 1154 goto out; 1155 1156 error = puffs_newnode(ap->a_dvp->v_mount, ap->a_dvp, ap->a_vpp, 1157 symlink_arg.pvnr_newnode, ap->a_cnp, VLNK, 0); 1158 1159 out: 1160 if (error || (ap->a_cnp->cn_flags & SAVESTART) == 0) 1161 PNBUF_PUT(ap->a_cnp->cn_pnbuf); 1162 vput(ap->a_dvp); 1163 return error; 1164 } 1165 1166 int 1167 puffs_readlink(void *v) 1168 { 1169 struct vop_readlink_args /* { 1170 const struct vnodeop_desc *a_desc; 1171 struct vnode *a_vp; 1172 struct uio *a_uio; 1173 kauth_cred_t a_cred; 1174 } */ *ap = v; 1175 int error; 1176 1177 PUFFS_VNREQ(readlink); 1178 1179 puffs_credcvt(&readlink_arg.pvnr_cred, ap->a_cred); 1180 readlink_arg.pvnr_linklen = sizeof(readlink_arg.pvnr_link); 1181 1182 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1183 PUFFS_VN_READLINK, &readlink_arg, sizeof(readlink_arg), 1184 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1185 if (error) 1186 return error; 1187 1188 readlink_arg.pvnr_link[readlink_arg.pvnr_linklen] = '\0'; 1189 return uiomove(&readlink_arg.pvnr_link, readlink_arg.pvnr_linklen, 1190 ap->a_uio); 1191 } 1192 1193 /* XXXXXXX: think about locking & userspace op delocking... */ 1194 int 1195 puffs_rename(void *v) 1196 { 1197 struct vop_rename_args /* { 1198 const struct vnodeop_desc *a_desc; 1199 struct vnode *a_fdvp; 1200 struct vnode *a_fvp; 1201 struct componentname *a_fcnp; 1202 struct vnode *a_tdvp; 1203 struct vnode *a_tvp; 1204 struct componentname *a_tcnp; 1205 }*/ *ap = v; 1206 int error; 1207 1208 PUFFS_VNREQ(rename); 1209 1210 if (ap->a_fvp->v_mount != ap->a_tdvp->v_mount) { 1211 error = EXDEV; 1212 goto out; 1213 } 1214 1215 rename_arg.pvnr_cookie_src = VPTOPNC(ap->a_fvp); 1216 rename_arg.pvnr_cookie_targdir = VPTOPNC(ap->a_tdvp); 1217 if (ap->a_tvp) 1218 rename_arg.pvnr_cookie_targ = VPTOPNC(ap->a_tvp); 1219 else 1220 rename_arg.pvnr_cookie_targ = NULL; 1221 puffs_makecn(&rename_arg.pvnr_cn_src, ap->a_fcnp); 1222 puffs_makecn(&rename_arg.pvnr_cn_targ, ap->a_tcnp); 1223 1224 error = puffs_vntouser(MPTOPUFFSMP(ap->a_fdvp->v_mount), 1225 PUFFS_VN_RENAME, &rename_arg, sizeof(rename_arg), 1226 VPTOPNC(ap->a_fdvp), NULL, NULL); 1227 1228 out: 1229 if (ap->a_tvp != NULL) 1230 vput(ap->a_tvp); 1231 if (ap->a_tdvp == ap->a_tvp) 1232 vrele(ap->a_tdvp); 1233 else 1234 vput(ap->a_tdvp); 1235 1236 vrele(ap->a_fdvp); 1237 vrele(ap->a_fvp); 1238 1239 return error; 1240 } 1241 1242 int 1243 puffs_read(void *v) 1244 { 1245 struct vop_read_args /* { 1246 const struct vnodeop_desc *a_desc; 1247 struct vnode *a_vp; 1248 struct uio *a_uio; 1249 int a_ioflag; 1250 kauth_cred_t a_cred; 1251 } */ *ap = v; 1252 struct puffs_vnreq_read *read_argp; 1253 struct puffs_mount *pmp; 1254 struct vnode *vp; 1255 struct uio *uio; 1256 void *win; 1257 size_t tomove, argsize; 1258 vsize_t bytelen; 1259 int error, ubcflags; 1260 1261 uio = ap->a_uio; 1262 vp = ap->a_vp; 1263 read_argp = NULL; 1264 error = 0; 1265 pmp = MPTOPUFFSMP(vp->v_mount); 1266 1267 /* std sanity */ 1268 if (uio->uio_resid == 0) 1269 return 0; 1270 if (uio->uio_offset < 0) 1271 return EINVAL; 1272 1273 if (vp->v_type == VREG && PUFFS_DOCACHE(pmp)) { 1274 const int advice = IO_ADV_DECODE(ap->a_ioflag); 1275 1276 ubcflags = 0; 1277 if (UBC_WANT_UNMAP(vp)) 1278 ubcflags = UBC_UNMAP; 1279 1280 while (uio->uio_resid > 0) { 1281 bytelen = MIN(uio->uio_resid, 1282 vp->v_size - uio->uio_offset); 1283 if (bytelen == 0) 1284 break; 1285 1286 win = ubc_alloc(&vp->v_uobj, uio->uio_offset, 1287 &bytelen, advice, UBC_READ); 1288 error = uiomove(win, bytelen, uio); 1289 ubc_release(win, ubcflags); 1290 if (error) 1291 break; 1292 } 1293 1294 if ((vp->v_mount->mnt_flag & MNT_NOATIME) == 0) 1295 puffs_updatenode(vp, PUFFS_UPDATEATIME); 1296 } else { 1297 /* 1298 * in case it's not a regular file or we're operating 1299 * uncached, do read in the old-fashioned style, 1300 * i.e. explicit read operations 1301 */ 1302 1303 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1304 argsize = sizeof(struct puffs_vnreq_read); 1305 read_argp = malloc(argsize, M_PUFFS, M_WAITOK | M_ZERO); 1306 1307 error = 0; 1308 while (uio->uio_resid > 0) { 1309 read_argp->pvnr_ioflag = ap->a_ioflag; 1310 read_argp->pvnr_resid = tomove; 1311 read_argp->pvnr_offset = uio->uio_offset; 1312 puffs_credcvt(&read_argp->pvnr_cred, ap->a_cred); 1313 1314 argsize = sizeof(struct puffs_vnreq_read); 1315 error = puffs_vntouser_adjbuf(pmp, PUFFS_VN_READ, 1316 (void **)&read_argp, &argsize, 1317 read_argp->pvnr_resid, VPTOPNC(ap->a_vp), 1318 ap->a_vp, NULL); 1319 if (error) 1320 break; 1321 1322 if (read_argp->pvnr_resid > tomove) { 1323 error = EINVAL; 1324 break; 1325 } 1326 1327 error = uiomove(read_argp->pvnr_data, 1328 tomove - read_argp->pvnr_resid, uio); 1329 1330 /* 1331 * in case the file is out of juice, resid from 1332 * userspace is != 0. and the error-case is 1333 * quite obvious 1334 */ 1335 if (error || read_argp->pvnr_resid) 1336 break; 1337 1338 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1339 } 1340 } 1341 1342 if (read_argp) 1343 free(read_argp, M_PUFFS); 1344 return error; 1345 } 1346 1347 int 1348 puffs_write(void *v) 1349 { 1350 struct vop_write_args /* { 1351 const struct vnodeop_desc *a_desc; 1352 struct vnode *a_vp; 1353 struct uio *a_uio; 1354 int a_ioflag; 1355 kauth_cred_t a_cred; 1356 }*/ *ap = v; 1357 struct puffs_vnreq_write *write_argp; 1358 struct puffs_mount *pmp; 1359 struct uio *uio; 1360 struct vnode *vp; 1361 void *win; 1362 size_t tomove, argsize; 1363 off_t oldoff, newoff, origoff; 1364 vsize_t bytelen; 1365 int error, uflags; 1366 int async, ubcflags; 1367 1368 vp = ap->a_vp; 1369 uio = ap->a_uio; 1370 async = vp->v_mount->mnt_flag & MNT_ASYNC; 1371 error = uflags = 0; 1372 write_argp = NULL; 1373 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1374 1375 if (vp->v_type == VREG && PUFFS_DOCACHE(pmp)) { 1376 ubcflags = 0; 1377 if (UBC_WANT_UNMAP(vp)) 1378 ubcflags = UBC_UNMAP; 1379 1380 /* 1381 * userspace *should* be allowed to control this, 1382 * but with UBC it's a bit unclear how to handle it 1383 */ 1384 if (ap->a_ioflag & IO_APPEND) 1385 uio->uio_offset = vp->v_size; 1386 1387 origoff = uio->uio_offset; 1388 while (uio->uio_resid > 0) { 1389 uflags |= PUFFS_UPDATECTIME; 1390 uflags |= PUFFS_UPDATEMTIME; 1391 oldoff = uio->uio_offset; 1392 bytelen = uio->uio_resid; 1393 1394 win = ubc_alloc(&vp->v_uobj, oldoff, &bytelen, 1395 UVM_ADV_NORMAL, UBC_WRITE); 1396 error = uiomove(win, bytelen, uio); 1397 1398 /* 1399 * did we grow the file? 1400 * XXX: should probably ask userspace to extend 1401 * it's idea of the *first* before growing it 1402 * here. Or we need some mechanism to "rollback" 1403 * in case putpages fails. 1404 */ 1405 newoff = oldoff + bytelen; 1406 if (vp->v_size < newoff) { 1407 uflags |= PUFFS_UPDATESIZE; 1408 uvm_vnp_setsize(vp, newoff); 1409 1410 /* 1411 * in case we couldn't copy data to the 1412 * window, zero it out so that we don't 1413 * have any random leftovers in there. 1414 */ 1415 if (error) 1416 memset(win, 0, bytelen); 1417 } 1418 1419 ubc_release(win, ubcflags); 1420 if (error) 1421 break; 1422 1423 /* ok, I really need to admit: why's this? */ 1424 if (!async && oldoff >> 16 != uio->uio_offset >> 16) { 1425 simple_lock(&vp->v_interlock); 1426 error = VOP_PUTPAGES(vp, oldoff & ~0xffff, 1427 uio->uio_offset & ~0xffff, PGO_CLEANIT); 1428 if (error) 1429 break; 1430 } 1431 } 1432 1433 if (error == 0 && ap->a_ioflag & IO_SYNC) { 1434 simple_lock(&vp->v_interlock); 1435 error = VOP_PUTPAGES(vp, trunc_page(origoff), 1436 round_page(uio->uio_offset), 1437 PGO_CLEANIT | PGO_SYNCIO); 1438 } 1439 1440 puffs_updatenode(vp, uflags); 1441 } else { 1442 /* tomove is non-increasing */ 1443 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1444 argsize = sizeof(struct puffs_vnreq_write) + tomove; 1445 write_argp = malloc(argsize, M_PUFFS, M_WAITOK | M_ZERO); 1446 1447 while (uio->uio_resid > 0) { 1448 write_argp->pvnr_ioflag = ap->a_ioflag; 1449 write_argp->pvnr_resid = tomove; 1450 write_argp->pvnr_offset = uio->uio_offset; 1451 puffs_credcvt(&write_argp->pvnr_cred, ap->a_cred); 1452 error = uiomove(write_argp->pvnr_data, tomove, uio); 1453 if (error) 1454 break; 1455 1456 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1457 PUFFS_VN_WRITE, write_argp, argsize, 1458 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1459 if (error) { 1460 /* restore uiomove */ 1461 uio->uio_resid += tomove; 1462 uio->uio_offset -= tomove; 1463 break; 1464 } 1465 if (write_argp->pvnr_resid > tomove) { 1466 /* 1467 * XXX: correct file size is a mystery, 1468 * we can only guess 1469 */ 1470 error = EINVAL; 1471 break; 1472 } 1473 1474 /* adjust file size */ 1475 if (vp->v_size < uio->uio_offset) 1476 uvm_vnp_setsize(vp, uio->uio_offset); 1477 1478 /* didn't move everything? bad userspace. bail */ 1479 if (write_argp->pvnr_resid != 0) { 1480 uio->uio_resid += write_argp->pvnr_resid; 1481 uio->uio_offset -= write_argp->pvnr_resid; 1482 error = EIO; 1483 break; 1484 } 1485 1486 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1487 } 1488 } 1489 1490 if (write_argp) 1491 free(write_argp, M_PUFFS); 1492 return error; 1493 } 1494 1495 static int puffs_fcnioctl(struct vop_ioctl_args * /*XXX*/, int); 1496 1497 #define FCNIOCTL_ARG_MAX 1<<16 1498 int 1499 puffs_fcnioctl(struct vop_ioctl_args *ap, int puffsop) 1500 { 1501 1502 /* currently not supported */ 1503 return EOPNOTSUPP; 1504 #if 0 1505 /* struct vop_ioctl_args { 1506 const struct vnodeop_desc *a_desc; 1507 struct vnode *a_vp; 1508 u_long a_command; 1509 void *a_data; 1510 int a_fflag; 1511 kauth_cred_t a_cred; 1512 struct lwp *a_l; 1513 }*ap = v; */ 1514 struct puffs_mount *pmp; 1515 struct puffs_sizepark pspark; 1516 void *kernbuf; 1517 size_t copylen; 1518 int error; 1519 1520 PUFFS_VNREQ(fcnioctl); 1521 1522 /* 1523 * Since this op gives the filesystem (almost) complete control on 1524 * how much it is allowed to copy from the calling process 1525 * address space, do not enable it by default, since it would 1526 * be a whopping security hole. 1527 */ 1528 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1529 if ((pmp->pmp_flags & PUFFS_KFLAG_ALLOWCTL) == 0) 1530 return EINVAL; /* only shoe that fits */ 1531 1532 /* fill in sizereq and store it */ 1533 pspark.pkso_reqid = puffs_getreqid(pmp); 1534 pspark.pkso_reqtype = PUFFS_SIZEOPREQ_BUF_IN; 1535 pspark.pkso_copybuf = ap->a_data; 1536 pspark.pkso_bufsize = FCNIOCTL_ARG_MAX; 1537 TAILQ_INSERT_TAIL(&pmp->pmp_req_sizepark, &pspark, pkso_entries); 1538 1539 /* then fill in actual request and shoot it off */ 1540 fcnioctl_arg.pvnr_command = ap->a_command; 1541 fcnioctl_arg.pvnr_fflag = ap->a_fflag; 1542 puffs_credcvt(&fcnioctl_arg.pvnr_cred, ap->a_cred); 1543 fcnioctl_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 1544 1545 error = puffs_vntouser_req(MPTOPUFFSMP(ap->a_vp->v_mount), puffsop, 1546 &fcnioctl_arg, sizeof(fcnioctl_arg), VPTOPNC(ap->a_vp), 1547 pspark.pkso_reqid, NULL, NULL); 1548 1549 /* if we don't need to copy data, we're done */ 1550 if (error || !fcnioctl_arg.pvnr_copyback) 1551 return error; 1552 1553 copylen = MIN(FCNIOCTL_ARG_MAX, fcnioctl_arg.pvnr_datalen); 1554 kernbuf = malloc(copylen, M_PUFFS, M_WAITOK); 1555 error = copyin(fcnioctl_arg.pvnr_data, kernbuf, copylen); 1556 if (error) 1557 goto out; 1558 error = copyout(kernbuf, ap->a_data, copylen); 1559 1560 out: 1561 free(kernbuf, M_PUFFS); 1562 return error; 1563 #endif 1564 } 1565 1566 int 1567 puffs_ioctl(void *v) 1568 { 1569 1570 return puffs_fcnioctl(v, PUFFS_VN_IOCTL); 1571 } 1572 1573 int 1574 puffs_fcntl(void *v) 1575 { 1576 1577 return puffs_fcnioctl(v, PUFFS_VN_FCNTL); 1578 } 1579 1580 int 1581 puffs_print(void *v) 1582 { 1583 struct vop_print_args /* { 1584 struct vnode *a_vp; 1585 } */ *ap = v; 1586 struct puffs_mount *pmp; 1587 struct vnode *vp = ap->a_vp; 1588 struct puffs_node *pn = vp->v_data; 1589 1590 PUFFS_VNREQ(print); 1591 1592 pmp = MPTOPUFFSMP(vp->v_mount); 1593 1594 /* kernel portion */ 1595 printf("tag VT_PUFFS, vnode %p, puffs node: %p,\n" 1596 " userspace cookie: %p\n", vp, pn, pn->pn_cookie); 1597 if (vp->v_type == VFIFO) 1598 fifo_printinfo(vp); 1599 lockmgr_printinfo(&vp->v_lock); 1600 1601 /* userspace portion */ 1602 if (EXISTSOP(pmp, PRINT)) 1603 puffs_vntouser(pmp, PUFFS_VN_PRINT, 1604 &print_arg, sizeof(print_arg), VPTOPNC(ap->a_vp), 1605 LOCKEDVP(ap->a_vp), NULL); 1606 1607 return 0; 1608 } 1609 1610 int 1611 puffs_pathconf(void *v) 1612 { 1613 struct vop_pathconf_args /* { 1614 const struct vnodeop_desc *a_desc; 1615 struct vnode *a_vp; 1616 int a_name; 1617 register_t *a_retval; 1618 } */ *ap = v; 1619 int error; 1620 1621 PUFFS_VNREQ(pathconf); 1622 1623 pathconf_arg.pvnr_name = ap->a_name; 1624 1625 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1626 PUFFS_VN_PATHCONF, &pathconf_arg, sizeof(pathconf_arg), 1627 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1628 if (error) 1629 return error; 1630 1631 *ap->a_retval = pathconf_arg.pvnr_retval; 1632 1633 return 0; 1634 } 1635 1636 int 1637 puffs_advlock(void *v) 1638 { 1639 struct vop_advlock_args /* { 1640 const struct vnodeop_desc *a_desc; 1641 struct vnode *a_vp; 1642 void *a_id; 1643 int a_op; 1644 struct flock *a_fl; 1645 int a_flags; 1646 } */ *ap = v; 1647 int error; 1648 1649 PUFFS_VNREQ(advlock); 1650 1651 error = copyin(ap->a_fl, &advlock_arg.pvnr_fl, sizeof(struct flock)); 1652 if (error) 1653 return error; 1654 advlock_arg.pvnr_id = ap->a_id; 1655 advlock_arg.pvnr_op = ap->a_op; 1656 advlock_arg.pvnr_flags = ap->a_flags; 1657 1658 return puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), PUFFS_VN_ADVLOCK, 1659 &advlock_arg, sizeof(advlock_arg), VPTOPNC(ap->a_vp), NULL, NULL); 1660 } 1661 /* 1662 * This maps itself to PUFFS_VN_READ/WRITE for data transfer. 1663 */ 1664 int 1665 puffs_strategy(void *v) 1666 { 1667 struct vop_strategy_args /* { 1668 const struct vnodeop_desc *a_desc; 1669 struct vnode *a_vp; 1670 struct buf *a_bp; 1671 } */ *ap = v; 1672 struct puffs_mount *pmp; 1673 struct puffs_vnreq_read *read_argp = NULL; 1674 struct puffs_vnreq_write *write_argp = NULL; 1675 struct buf *bp; 1676 size_t argsize; 1677 size_t tomove, moved; 1678 int error; 1679 1680 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1681 bp = ap->a_bp; 1682 1683 if ((bp->b_flags & B_READ) && !EXISTSOP(pmp, READ)) 1684 return EOPNOTSUPP; 1685 if ((bp->b_flags & B_WRITE) && !EXISTSOP(pmp, WRITE)) 1686 return EOPNOTSUPP; 1687 1688 #ifdef DIAGNOSTIC 1689 if (bp->b_resid > pmp->pmp_req_maxsize - PUFFS_REQSTRUCT_MAX) 1690 panic("puffs_strategy: wildly inappropriate buf resid %d", 1691 bp->b_resid); 1692 #endif 1693 1694 if (bp->b_flags & B_READ) { 1695 argsize = sizeof(struct puffs_vnreq_read); 1696 read_argp = malloc(argsize, M_PUFFS, M_NOWAIT | M_ZERO); 1697 if (read_argp == NULL) { 1698 error = ENOMEM; 1699 goto out; 1700 } 1701 1702 tomove = PUFFS_TOMOVE(bp->b_resid, pmp); 1703 1704 read_argp->pvnr_ioflag = 0; 1705 read_argp->pvnr_resid = tomove; 1706 read_argp->pvnr_offset = bp->b_blkno << DEV_BSHIFT; 1707 puffs_credcvt(&read_argp->pvnr_cred, FSCRED); 1708 1709 error = puffs_vntouser_adjbuf(pmp, PUFFS_VN_READ, 1710 (void **)&read_argp, &argsize, 1711 read_argp->pvnr_resid, VPTOPNC(ap->a_vp), 1712 LOCKEDVP(ap->a_vp), NULL); 1713 1714 if (error) 1715 goto out; 1716 1717 if (read_argp->pvnr_resid > tomove) { 1718 error = EINVAL; 1719 goto out; 1720 } 1721 1722 moved = tomove - read_argp->pvnr_resid; 1723 1724 (void)memcpy(bp->b_data, read_argp->pvnr_data, moved); 1725 bp->b_resid -= moved; 1726 } else { 1727 argsize = sizeof(struct puffs_vnreq_write) + bp->b_bcount; 1728 write_argp = malloc(argsize, M_PUFFS, M_NOWAIT | M_ZERO); 1729 if (write_argp == NULL) { 1730 error = ENOMEM; 1731 goto out; 1732 } 1733 1734 tomove = PUFFS_TOMOVE(bp->b_resid, pmp); 1735 1736 write_argp->pvnr_ioflag = 0; 1737 write_argp->pvnr_resid = tomove; 1738 write_argp->pvnr_offset = bp->b_blkno << DEV_BSHIFT; 1739 puffs_credcvt(&write_argp->pvnr_cred, FSCRED); 1740 1741 (void)memcpy(&write_argp->pvnr_data, bp->b_data, tomove); 1742 1743 error = puffs_vntouser(MPTOPUFFSMP(ap->a_vp->v_mount), 1744 PUFFS_VN_WRITE, write_argp, argsize, 1745 VPTOPNC(ap->a_vp), ap->a_vp, NULL); 1746 if (error) 1747 goto out; 1748 1749 moved = write_argp->pvnr_resid - tomove; 1750 1751 if (write_argp->pvnr_resid > tomove) { 1752 error = EINVAL; 1753 goto out; 1754 } 1755 1756 bp->b_resid -= moved; 1757 if (write_argp->pvnr_resid != 0) 1758 error = EIO; 1759 } 1760 1761 out: 1762 if (read_argp) 1763 free(read_argp, M_PUFFS); 1764 if (write_argp) 1765 free(write_argp, M_PUFFS); 1766 1767 biodone(ap->a_bp); 1768 return error; 1769 } 1770 1771 int 1772 puffs_mmap(void *v) 1773 { 1774 struct vop_mmap_args /* { 1775 const struct vnodeop_desc *a_desc; 1776 struct vnode *a_vp; 1777 int a_fflags; 1778 kauth_cred_t a_cred; 1779 struct lwp *a_l; 1780 } */ *ap = v; 1781 struct puffs_mount *pmp; 1782 int error; 1783 1784 PUFFS_VNREQ(mmap); 1785 1786 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1787 1788 if (!PUFFS_DOCACHE(pmp)) 1789 return genfs_eopnotsupp(v); 1790 1791 if (EXISTSOP(pmp, MMAP)) { 1792 mmap_arg.pvnr_fflags = ap->a_fflags; 1793 puffs_credcvt(&mmap_arg.pvnr_cred, ap->a_cred); 1794 mmap_arg.pvnr_pid = puffs_lwp2pid(ap->a_l); 1795 1796 error = puffs_vntouser(pmp, PUFFS_VN_MMAP, 1797 &mmap_arg, sizeof(mmap_arg), 1798 VPTOPNC(ap->a_vp), NULL, NULL); 1799 } else { 1800 error = genfs_mmap(v); 1801 } 1802 1803 return error; 1804 } 1805 1806 1807 /* 1808 * The rest don't get a free trip to userspace and back, they 1809 * have to stay within the kernel. 1810 */ 1811 1812 /* 1813 * bmap doesn't really make any sense for puffs, so just 1:1 map it. 1814 * well, maybe somehow, somewhere, some day .... 1815 */ 1816 int 1817 puffs_bmap(void *v) 1818 { 1819 struct vop_bmap_args /* { 1820 const struct vnodeop_desc *a_desc; 1821 struct vnode *a_vp; 1822 daddr_t a_bn; 1823 struct vnode **a_vpp; 1824 daddr_t *a_bnp; 1825 int *a_runp; 1826 } */ *ap = v; 1827 struct puffs_mount *pmp; 1828 1829 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1830 1831 if (ap->a_vpp) 1832 *ap->a_vpp = ap->a_vp; 1833 if (ap->a_bnp) 1834 *ap->a_bnp = ap->a_bn; 1835 if (ap->a_runp) 1836 *ap->a_runp = pmp->pmp_req_maxsize - PUFFS_REQSTRUCT_MAX; 1837 1838 return 0; 1839 } 1840 1841 /* 1842 * moreXXX: yes, todo 1843 */ 1844 int 1845 puffs_lock(void *v) 1846 { 1847 struct vop_lock_args /* { 1848 struct vnode *a_vp; 1849 int a_flags; 1850 }*/ *ap = v; 1851 struct vnode *vp = ap->a_vp; 1852 1853 #if 0 1854 DPRINTF(("puffs_lock: lock %p, args 0x%x\n", vp, ap->a_flags)); 1855 #endif 1856 1857 return lockmgr(&vp->v_lock, ap->a_flags, &vp->v_interlock); 1858 } 1859 1860 int 1861 puffs_unlock(void *v) 1862 { 1863 struct vop_unlock_args /* { 1864 struct vnode *a_vp; 1865 int a_flags; 1866 } */ *ap = v; 1867 struct vnode *vp = ap->a_vp; 1868 1869 #if 0 1870 DPRINTF(("puffs_unlock: lock %p, args 0x%x\n", vp, ap->a_flags)); 1871 #endif 1872 1873 return lockmgr(&vp->v_lock, ap->a_flags | LK_RELEASE, &vp->v_interlock); 1874 } 1875 1876 int 1877 puffs_islocked(void *v) 1878 { 1879 struct vop_islocked_args *ap = v; 1880 int rv; 1881 1882 rv = lockstatus(&ap->a_vp->v_lock); 1883 return rv; 1884 } 1885 1886 int 1887 puffs_generic(void *v) 1888 { 1889 struct vop_generic_args *ap = v; 1890 1891 (void)ap; 1892 DPRINTF(("puffs_generic: ap->a_desc = %s\n", ap->a_desc->vdesc_name)); 1893 1894 return EOPNOTSUPP; 1895 } 1896 1897 1898 /* 1899 * spec & fifo. These call the miscfs spec and fifo vectors, but issue 1900 * FAF update information for the puffs node first. 1901 */ 1902 int 1903 puffs_spec_read(void *v) 1904 { 1905 struct vop_read_args /* { 1906 const struct vnodeop_desc *a_desc; 1907 struct vnode *a_vp; 1908 struct uio *a_uio; 1909 int a_ioflag; 1910 kauth_cred_t a_cred; 1911 } */ *ap = v; 1912 1913 puffs_updatenode(ap->a_vp, PUFFS_UPDATEATIME); 1914 return VOCALL(spec_vnodeop_p, VOFFSET(vop_read), v); 1915 } 1916 1917 int 1918 puffs_spec_write(void *v) 1919 { 1920 struct vop_write_args /* { 1921 const struct vnodeop_desc *a_desc; 1922 struct vnode *a_vp; 1923 struct uio *a_uio; 1924 int a_ioflag; 1925 kauth_cred_t a_cred; 1926 }*/ *ap = v; 1927 1928 puffs_updatenode(ap->a_vp, PUFFS_UPDATEMTIME); 1929 return VOCALL(spec_vnodeop_p, VOFFSET(vop_write), v); 1930 } 1931 1932 int 1933 puffs_fifo_read(void *v) 1934 { 1935 struct vop_read_args /* { 1936 const struct vnodeop_desc *a_desc; 1937 struct vnode *a_vp; 1938 struct uio *a_uio; 1939 int a_ioflag; 1940 kauth_cred_t a_cred; 1941 } */ *ap = v; 1942 1943 puffs_updatenode(ap->a_vp, PUFFS_UPDATEATIME); 1944 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), v); 1945 } 1946 1947 int 1948 puffs_fifo_write(void *v) 1949 { 1950 struct vop_write_args /* { 1951 const struct vnodeop_desc *a_desc; 1952 struct vnode *a_vp; 1953 struct uio *a_uio; 1954 int a_ioflag; 1955 kauth_cred_t a_cred; 1956 }*/ *ap = v; 1957 1958 puffs_updatenode(ap->a_vp, PUFFS_UPDATEMTIME); 1959 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), v); 1960 } 1961
Indexes created Wed Oct 01 19:09:53 GMT 2025