puffs_vnops.c revision 1.146
1 /* $NetBSD: puffs_vnops.c,v 1.146 2010/06/24 13:03:10 hannken Exp $ */ 2 3 /* 4 * Copyright (c) 2005, 2006, 2007 Antti Kantee. All Rights Reserved. 5 * 6 * Development of this software was supported by the 7 * Google Summer of Code program and the Ulla Tuominen Foundation. 8 * The Google SoC project was mentored by Bill Studenmund. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 20 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 22 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 25 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: puffs_vnops.c,v 1.146 2010/06/24 13:03:10 hannken Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/buf.h> 37 #include <sys/malloc.h> 38 #include <sys/mount.h> 39 #include <sys/namei.h> 40 #include <sys/vnode.h> 41 #include <sys/proc.h> 42 43 #include <uvm/uvm.h> 44 45 #include <fs/puffs/puffs_msgif.h> 46 #include <fs/puffs/puffs_sys.h> 47 48 #include <miscfs/fifofs/fifo.h> 49 #include <miscfs/genfs/genfs.h> 50 #include <miscfs/specfs/specdev.h> 51 52 int puffs_vnop_lookup(void *); 53 int puffs_vnop_create(void *); 54 int puffs_vnop_access(void *); 55 int puffs_vnop_mknod(void *); 56 int puffs_vnop_open(void *); 57 int puffs_vnop_close(void *); 58 int puffs_vnop_getattr(void *); 59 int puffs_vnop_setattr(void *); 60 int puffs_vnop_reclaim(void *); 61 int puffs_vnop_readdir(void *); 62 int puffs_vnop_poll(void *); 63 int puffs_vnop_fsync(void *); 64 int puffs_vnop_seek(void *); 65 int puffs_vnop_remove(void *); 66 int puffs_vnop_mkdir(void *); 67 int puffs_vnop_rmdir(void *); 68 int puffs_vnop_link(void *); 69 int puffs_vnop_readlink(void *); 70 int puffs_vnop_symlink(void *); 71 int puffs_vnop_rename(void *); 72 int puffs_vnop_read(void *); 73 int puffs_vnop_write(void *); 74 int puffs_vnop_fcntl(void *); 75 int puffs_vnop_ioctl(void *); 76 int puffs_vnop_inactive(void *); 77 int puffs_vnop_print(void *); 78 int puffs_vnop_pathconf(void *); 79 int puffs_vnop_advlock(void *); 80 int puffs_vnop_strategy(void *); 81 int puffs_vnop_bmap(void *); 82 int puffs_vnop_mmap(void *); 83 int puffs_vnop_getpages(void *); 84 int puffs_vnop_abortop(void *); 85 int puffs_vnop_getextattr(void *); 86 int puffs_vnop_setextattr(void *); 87 int puffs_vnop_listextattr(void *); 88 int puffs_vnop_deleteextattr(void *); 89 90 int puffs_vnop_spec_read(void *); 91 int puffs_vnop_spec_write(void *); 92 int puffs_vnop_fifo_read(void *); 93 int puffs_vnop_fifo_write(void *); 94 95 int puffs_vnop_checkop(void *); 96 97 #define puffs_vnop_lock genfs_lock 98 #define puffs_vnop_unlock genfs_unlock 99 #define puffs_vnop_islocked genfs_islocked 100 101 int (**puffs_vnodeop_p)(void *); 102 const struct vnodeopv_entry_desc puffs_vnodeop_entries[] = { 103 { &vop_default_desc, vn_default_error }, 104 { &vop_lookup_desc, puffs_vnop_lookup }, /* REAL lookup */ 105 { &vop_create_desc, puffs_vnop_checkop }, /* create */ 106 { &vop_mknod_desc, puffs_vnop_checkop }, /* mknod */ 107 { &vop_open_desc, puffs_vnop_open }, /* REAL open */ 108 { &vop_close_desc, puffs_vnop_checkop }, /* close */ 109 { &vop_access_desc, puffs_vnop_access }, /* REAL access */ 110 { &vop_getattr_desc, puffs_vnop_checkop }, /* getattr */ 111 { &vop_setattr_desc, puffs_vnop_checkop }, /* setattr */ 112 { &vop_read_desc, puffs_vnop_checkop }, /* read */ 113 { &vop_write_desc, puffs_vnop_checkop }, /* write */ 114 { &vop_fsync_desc, puffs_vnop_fsync }, /* REAL fsync */ 115 { &vop_seek_desc, puffs_vnop_checkop }, /* seek */ 116 { &vop_remove_desc, puffs_vnop_checkop }, /* remove */ 117 { &vop_link_desc, puffs_vnop_checkop }, /* link */ 118 { &vop_rename_desc, puffs_vnop_checkop }, /* rename */ 119 { &vop_mkdir_desc, puffs_vnop_checkop }, /* mkdir */ 120 { &vop_rmdir_desc, puffs_vnop_checkop }, /* rmdir */ 121 { &vop_symlink_desc, puffs_vnop_checkop }, /* symlink */ 122 { &vop_readdir_desc, puffs_vnop_checkop }, /* readdir */ 123 { &vop_readlink_desc, puffs_vnop_checkop }, /* readlink */ 124 { &vop_getpages_desc, puffs_vnop_checkop }, /* getpages */ 125 { &vop_putpages_desc, genfs_putpages }, /* REAL putpages */ 126 { &vop_pathconf_desc, puffs_vnop_checkop }, /* pathconf */ 127 { &vop_advlock_desc, puffs_vnop_checkop }, /* advlock */ 128 { &vop_strategy_desc, puffs_vnop_strategy }, /* REAL strategy */ 129 { &vop_revoke_desc, genfs_revoke }, /* REAL revoke */ 130 { &vop_abortop_desc, puffs_vnop_abortop }, /* REAL abortop */ 131 { &vop_inactive_desc, puffs_vnop_inactive }, /* REAL inactive */ 132 { &vop_reclaim_desc, puffs_vnop_reclaim }, /* REAL reclaim */ 133 { &vop_lock_desc, puffs_vnop_lock }, /* REAL lock */ 134 { &vop_unlock_desc, puffs_vnop_unlock }, /* REAL unlock */ 135 { &vop_bmap_desc, puffs_vnop_bmap }, /* REAL bmap */ 136 { &vop_print_desc, puffs_vnop_print }, /* REAL print */ 137 { &vop_islocked_desc, puffs_vnop_islocked }, /* REAL islocked */ 138 { &vop_bwrite_desc, genfs_nullop }, /* REAL bwrite */ 139 { &vop_mmap_desc, puffs_vnop_mmap }, /* REAL mmap */ 140 { &vop_poll_desc, puffs_vnop_poll }, /* REAL poll */ 141 { &vop_getextattr_desc, puffs_vnop_getextattr }, /* getextattr */ 142 { &vop_setextattr_desc, puffs_vnop_setextattr }, /* setextattr */ 143 { &vop_listextattr_desc, puffs_vnop_listextattr }, /* listextattr */ 144 { &vop_deleteextattr_desc, puffs_vnop_deleteextattr },/* deleteextattr */ 145 #if 0 146 { &vop_openextattr_desc, puffs_vnop_checkop }, /* openextattr */ 147 { &vop_closeextattr_desc, puffs_vnop_checkop }, /* closeextattr */ 148 #endif 149 { &vop_kqfilter_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_vnop_checkop }, /* access */ 165 { &vop_getattr_desc, puffs_vnop_checkop }, /* getattr */ 166 { &vop_setattr_desc, puffs_vnop_checkop }, /* setattr */ 167 { &vop_read_desc, puffs_vnop_spec_read }, /* update, read */ 168 { &vop_write_desc, puffs_vnop_spec_write }, /* update, write */ 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 }, /* spec_mmap */ 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_vnop_inactive }, /* REAL inactive */ 187 { &vop_reclaim_desc, puffs_vnop_reclaim }, /* REAL reclaim */ 188 { &vop_lock_desc, puffs_vnop_lock }, /* REAL lock */ 189 { &vop_unlock_desc, puffs_vnop_unlock }, /* REAL unlock */ 190 { &vop_bmap_desc, spec_bmap }, /* dummy */ 191 { &vop_strategy_desc, spec_strategy }, /* dev strategy */ 192 { &vop_print_desc, puffs_vnop_print }, /* REAL print */ 193 { &vop_islocked_desc, puffs_vnop_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 { &vop_getextattr_desc, puffs_vnop_checkop }, /* getextattr */ 200 { &vop_setextattr_desc, puffs_vnop_checkop }, /* setextattr */ 201 { &vop_listextattr_desc, puffs_vnop_checkop }, /* listextattr */ 202 { &vop_deleteextattr_desc, puffs_vnop_checkop },/* deleteextattr */ 203 #if 0 204 { &vop_openextattr_desc, _openextattr }, /* openextattr */ 205 { &vop_closeextattr_desc, _closeextattr }, /* closeextattr */ 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, vn_fifo_bypass }, /* lookup, ENOTDIR */ 217 { &vop_create_desc, vn_fifo_bypass }, /* genfs_badop */ 218 { &vop_mknod_desc, vn_fifo_bypass }, /* genfs_badop */ 219 { &vop_open_desc, vn_fifo_bypass }, /* open */ 220 { &vop_close_desc, vn_fifo_bypass }, /* close */ 221 { &vop_access_desc, puffs_vnop_checkop }, /* access */ 222 { &vop_getattr_desc, puffs_vnop_checkop }, /* getattr */ 223 { &vop_setattr_desc, puffs_vnop_checkop }, /* setattr */ 224 { &vop_read_desc, puffs_vnop_fifo_read }, /* read, update */ 225 { &vop_write_desc, puffs_vnop_fifo_write }, /* write, update */ 226 { &vop_ioctl_desc, vn_fifo_bypass }, /* ioctl */ 227 { &vop_fcntl_desc, genfs_fcntl }, /* dummy */ 228 { &vop_poll_desc, vn_fifo_bypass }, /* poll */ 229 { &vop_kqfilter_desc, vn_fifo_bypass }, /* kqfilter */ 230 { &vop_revoke_desc, vn_fifo_bypass }, /* genfs_revoke */ 231 { &vop_mmap_desc, vn_fifo_bypass }, /* genfs_badop */ 232 { &vop_fsync_desc, vn_fifo_bypass }, /* genfs_nullop*/ 233 { &vop_seek_desc, vn_fifo_bypass }, /* genfs_badop */ 234 { &vop_remove_desc, vn_fifo_bypass }, /* genfs_badop */ 235 { &vop_link_desc, vn_fifo_bypass }, /* genfs_badop */ 236 { &vop_rename_desc, vn_fifo_bypass }, /* genfs_badop */ 237 { &vop_mkdir_desc, vn_fifo_bypass }, /* genfs_badop */ 238 { &vop_rmdir_desc, vn_fifo_bypass }, /* genfs_badop */ 239 { &vop_symlink_desc, vn_fifo_bypass }, /* genfs_badop */ 240 { &vop_readdir_desc, vn_fifo_bypass }, /* genfs_badop */ 241 { &vop_readlink_desc, vn_fifo_bypass }, /* genfs_badop */ 242 { &vop_abortop_desc, vn_fifo_bypass }, /* genfs_badop */ 243 { &vop_inactive_desc, puffs_vnop_inactive }, /* REAL inactive */ 244 { &vop_reclaim_desc, puffs_vnop_reclaim }, /* REAL reclaim */ 245 { &vop_lock_desc, puffs_vnop_lock }, /* REAL lock */ 246 { &vop_unlock_desc, puffs_vnop_unlock }, /* REAL unlock */ 247 { &vop_bmap_desc, vn_fifo_bypass }, /* dummy */ 248 { &vop_strategy_desc, vn_fifo_bypass }, /* genfs_badop */ 249 { &vop_print_desc, puffs_vnop_print }, /* REAL print */ 250 { &vop_islocked_desc, puffs_vnop_islocked }, /* REAL islocked */ 251 { &vop_pathconf_desc, vn_fifo_bypass }, /* pathconf */ 252 { &vop_advlock_desc, vn_fifo_bypass }, /* genfs_einval */ 253 { &vop_bwrite_desc, vn_bwrite }, /* bwrite */ 254 { &vop_putpages_desc, vn_fifo_bypass }, /* genfs_null_putpages*/ 255 #if 0 256 { &vop_openextattr_desc, _openextattr }, /* openextattr */ 257 { &vop_closeextattr_desc, _closeextattr }, /* closeextattr */ 258 #endif 259 { &vop_getextattr_desc, puffs_vnop_checkop }, /* getextattr */ 260 { &vop_setextattr_desc, puffs_vnop_checkop }, /* setextattr */ 261 { &vop_listextattr_desc, puffs_vnop_checkop }, /* listextattr */ 262 { &vop_deleteextattr_desc, puffs_vnop_checkop }, /* deleteextattr */ 263 { NULL, NULL } 264 }; 265 const struct vnodeopv_desc puffs_fifoop_opv_desc = 266 { &puffs_fifoop_p, puffs_fifoop_entries }; 267 268 269 /* "real" vnode operations */ 270 int (**puffs_msgop_p)(void *); 271 const struct vnodeopv_entry_desc puffs_msgop_entries[] = { 272 { &vop_default_desc, vn_default_error }, 273 { &vop_create_desc, puffs_vnop_create }, /* create */ 274 { &vop_mknod_desc, puffs_vnop_mknod }, /* mknod */ 275 { &vop_open_desc, puffs_vnop_open }, /* open */ 276 { &vop_close_desc, puffs_vnop_close }, /* close */ 277 { &vop_access_desc, puffs_vnop_access }, /* access */ 278 { &vop_getattr_desc, puffs_vnop_getattr }, /* getattr */ 279 { &vop_setattr_desc, puffs_vnop_setattr }, /* setattr */ 280 { &vop_read_desc, puffs_vnop_read }, /* read */ 281 { &vop_write_desc, puffs_vnop_write }, /* write */ 282 { &vop_seek_desc, puffs_vnop_seek }, /* seek */ 283 { &vop_remove_desc, puffs_vnop_remove }, /* remove */ 284 { &vop_link_desc, puffs_vnop_link }, /* link */ 285 { &vop_rename_desc, puffs_vnop_rename }, /* rename */ 286 { &vop_mkdir_desc, puffs_vnop_mkdir }, /* mkdir */ 287 { &vop_rmdir_desc, puffs_vnop_rmdir }, /* rmdir */ 288 { &vop_symlink_desc, puffs_vnop_symlink }, /* symlink */ 289 { &vop_readdir_desc, puffs_vnop_readdir }, /* readdir */ 290 { &vop_readlink_desc, puffs_vnop_readlink }, /* readlink */ 291 { &vop_print_desc, puffs_vnop_print }, /* print */ 292 { &vop_islocked_desc, puffs_vnop_islocked }, /* islocked */ 293 { &vop_pathconf_desc, puffs_vnop_pathconf }, /* pathconf */ 294 { &vop_advlock_desc, puffs_vnop_advlock }, /* advlock */ 295 { &vop_getpages_desc, puffs_vnop_getpages }, /* getpages */ 296 { NULL, NULL } 297 }; 298 const struct vnodeopv_desc puffs_msgop_opv_desc = 299 { &puffs_msgop_p, puffs_msgop_entries }; 300 301 302 #define ERROUT(err) \ 303 do { \ 304 error = err; \ 305 goto out; \ 306 } while (/*CONSTCOND*/0) 307 308 /* 309 * This is a generic vnode operation handler. It checks if the necessary 310 * operations for the called vnode operation are implemented by userspace 311 * and either returns a dummy return value or proceeds to call the real 312 * vnode operation from puffs_msgop_v. 313 * 314 * XXX: this should described elsewhere and autogenerated, the complexity 315 * of the vnode operations vectors and their interrelationships is also 316 * getting a bit out of hand. Another problem is that we need this same 317 * information in the fs server code, so keeping the two in sync manually 318 * is not a viable (long term) plan. 319 */ 320 321 /* not supported, handle locking protocol */ 322 #define CHECKOP_NOTSUPP(op) \ 323 case VOP_##op##_DESCOFFSET: \ 324 if (pmp->pmp_vnopmask[PUFFS_VN_##op] == 0) \ 325 return genfs_eopnotsupp(v); \ 326 break 327 328 /* always succeed, no locking */ 329 #define CHECKOP_SUCCESS(op) \ 330 case VOP_##op##_DESCOFFSET: \ 331 if (pmp->pmp_vnopmask[PUFFS_VN_##op] == 0) \ 332 return 0; \ 333 break 334 335 int 336 puffs_vnop_checkop(void *v) 337 { 338 struct vop_generic_args /* { 339 struct vnodeop_desc *a_desc; 340 spooky mystery contents; 341 } */ *ap = v; 342 struct vnodeop_desc *desc = ap->a_desc; 343 struct puffs_mount *pmp; 344 struct vnode *vp; 345 int offset, rv; 346 347 offset = ap->a_desc->vdesc_vp_offsets[0]; 348 #ifdef DIAGNOSTIC 349 if (offset == VDESC_NO_OFFSET) 350 panic("puffs_checkop: no vnode, why did you call me?"); 351 #endif 352 vp = *VOPARG_OFFSETTO(struct vnode **, offset, ap); 353 pmp = MPTOPUFFSMP(vp->v_mount); 354 355 DPRINTF_VERBOSE(("checkop call %s (%d), vp %p\n", 356 ap->a_desc->vdesc_name, ap->a_desc->vdesc_offset, vp)); 357 358 if (!ALLOPS(pmp)) { 359 switch (desc->vdesc_offset) { 360 CHECKOP_NOTSUPP(CREATE); 361 CHECKOP_NOTSUPP(MKNOD); 362 CHECKOP_NOTSUPP(GETATTR); 363 CHECKOP_NOTSUPP(SETATTR); 364 CHECKOP_NOTSUPP(READ); 365 CHECKOP_NOTSUPP(WRITE); 366 CHECKOP_NOTSUPP(FCNTL); 367 CHECKOP_NOTSUPP(IOCTL); 368 CHECKOP_NOTSUPP(REMOVE); 369 CHECKOP_NOTSUPP(LINK); 370 CHECKOP_NOTSUPP(RENAME); 371 CHECKOP_NOTSUPP(MKDIR); 372 CHECKOP_NOTSUPP(RMDIR); 373 CHECKOP_NOTSUPP(SYMLINK); 374 CHECKOP_NOTSUPP(READDIR); 375 CHECKOP_NOTSUPP(READLINK); 376 CHECKOP_NOTSUPP(PRINT); 377 CHECKOP_NOTSUPP(PATHCONF); 378 CHECKOP_NOTSUPP(ADVLOCK); 379 CHECKOP_NOTSUPP(GETEXTATTR); 380 CHECKOP_NOTSUPP(SETEXTATTR); 381 CHECKOP_NOTSUPP(LISTEXTATTR); 382 CHECKOP_NOTSUPP(DELETEEXTATTR); 383 384 CHECKOP_SUCCESS(ACCESS); 385 CHECKOP_SUCCESS(CLOSE); 386 CHECKOP_SUCCESS(SEEK); 387 388 case VOP_GETPAGES_DESCOFFSET: 389 if (!EXISTSOP(pmp, READ)) 390 return genfs_eopnotsupp(v); 391 break; 392 393 default: 394 panic("puffs_checkop: unhandled vnop %d", 395 desc->vdesc_offset); 396 } 397 } 398 399 rv = VOCALL(puffs_msgop_p, ap->a_desc->vdesc_offset, v); 400 401 DPRINTF_VERBOSE(("checkop return %s (%d), vp %p: %d\n", 402 ap->a_desc->vdesc_name, ap->a_desc->vdesc_offset, vp, rv)); 403 404 return rv; 405 } 406 407 static int callremove(struct puffs_mount *, puffs_cookie_t, puffs_cookie_t, 408 struct componentname *); 409 static int callrmdir(struct puffs_mount *, puffs_cookie_t, puffs_cookie_t, 410 struct componentname *); 411 static void callinactive(struct puffs_mount *, puffs_cookie_t, int); 412 static void callreclaim(struct puffs_mount *, puffs_cookie_t); 413 static int flushvncache(struct vnode *, off_t, off_t, bool); 414 415 416 #define PUFFS_ABORT_LOOKUP 1 417 #define PUFFS_ABORT_CREATE 2 418 #define PUFFS_ABORT_MKNOD 3 419 #define PUFFS_ABORT_MKDIR 4 420 #define PUFFS_ABORT_SYMLINK 5 421 422 /* 423 * Press the pani^Wabort button! Kernel resource allocation failed. 424 */ 425 static void 426 puffs_abortbutton(struct puffs_mount *pmp, int what, 427 puffs_cookie_t dck, puffs_cookie_t ck, struct componentname *cnp) 428 { 429 430 switch (what) { 431 case PUFFS_ABORT_CREATE: 432 case PUFFS_ABORT_MKNOD: 433 case PUFFS_ABORT_SYMLINK: 434 callremove(pmp, dck, ck, cnp); 435 break; 436 case PUFFS_ABORT_MKDIR: 437 callrmdir(pmp, dck, ck, cnp); 438 break; 439 } 440 441 callinactive(pmp, ck, 0); 442 callreclaim(pmp, ck); 443 } 444 445 /* 446 * Begin vnode operations. 447 * 448 * A word from the keymaster about locks: generally we don't want 449 * to use the vnode locks at all: it creates an ugly dependency between 450 * the userlandia file server and the kernel. But we'll play along with 451 * the kernel vnode locks for now. However, even currently we attempt 452 * to release locks as early as possible. This is possible for some 453 * operations which a) don't need a locked vnode after the userspace op 454 * and b) return with the vnode unlocked. Theoretically we could 455 * unlock-do op-lock for others and order the graph in userspace, but I 456 * don't want to think of the consequences for the time being. 457 */ 458 459 int 460 puffs_vnop_lookup(void *v) 461 { 462 struct vop_lookup_args /* { 463 const struct vnodeop_desc *a_desc; 464 struct vnode *a_dvp; 465 struct vnode **a_vpp; 466 struct componentname *a_cnp; 467 } */ *ap = v; 468 PUFFS_MSG_VARS(vn, lookup); 469 struct puffs_mount *pmp; 470 struct componentname *cnp; 471 struct vnode *vp, *dvp; 472 struct puffs_node *dpn; 473 int isdot; 474 int error; 475 476 pmp = MPTOPUFFSMP(ap->a_dvp->v_mount); 477 cnp = ap->a_cnp; 478 dvp = ap->a_dvp; 479 *ap->a_vpp = NULL; 480 481 /* r/o fs? we check create later to handle EEXIST */ 482 if ((cnp->cn_flags & ISLASTCN) 483 && (dvp->v_mount->mnt_flag & MNT_RDONLY) 484 && (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) 485 return EROFS; 486 487 isdot = cnp->cn_namelen == 1 && *cnp->cn_nameptr == '.'; 488 489 DPRINTF(("puffs_lookup: \"%s\", parent vnode %p, op: %x\n", 490 cnp->cn_nameptr, dvp, cnp->cn_nameiop)); 491 492 /* 493 * Check if someone fed it into the cache 494 */ 495 if (PUFFS_USE_NAMECACHE(pmp)) { 496 error = cache_lookup(dvp, ap->a_vpp, cnp); 497 498 if (error >= 0) 499 return error; 500 } 501 502 if (isdot) { 503 vp = ap->a_dvp; 504 vref(vp); 505 *ap->a_vpp = vp; 506 return 0; 507 } 508 509 PUFFS_MSG_ALLOC(vn, lookup); 510 puffs_makecn(&lookup_msg->pvnr_cn, &lookup_msg->pvnr_cn_cred, 511 cnp, PUFFS_USE_FULLPNBUF(pmp)); 512 513 if (cnp->cn_flags & ISDOTDOT) 514 VOP_UNLOCK(dvp); 515 516 puffs_msg_setinfo(park_lookup, PUFFSOP_VN, 517 PUFFS_VN_LOOKUP, VPTOPNC(dvp)); 518 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_lookup, dvp->v_data, NULL, error); 519 DPRINTF(("puffs_lookup: return of the userspace, part %d\n", error)); 520 521 /* 522 * In case of error, there is no new vnode to play with, so be 523 * happy with the NULL value given to vpp in the beginning. 524 * Also, check if this really was an error or the target was not 525 * present. Either treat it as a non-error for CREATE/RENAME or 526 * enter the component into the negative name cache (if desired). 527 */ 528 if (error) { 529 error = checkerr(pmp, error, __func__); 530 if (error == ENOENT) { 531 /* don't allow to create files on r/o fs */ 532 if ((dvp->v_mount->mnt_flag & MNT_RDONLY) 533 && cnp->cn_nameiop == CREATE) { 534 error = EROFS; 535 536 /* adjust values if we are creating */ 537 } else if ((cnp->cn_flags & ISLASTCN) 538 && (cnp->cn_nameiop == CREATE 539 || cnp->cn_nameiop == RENAME)) { 540 cnp->cn_flags |= SAVENAME; 541 error = EJUSTRETURN; 542 543 /* save negative cache entry */ 544 } else { 545 if ((cnp->cn_flags & MAKEENTRY) 546 && PUFFS_USE_NAMECACHE(pmp)) 547 cache_enter(dvp, NULL, cnp); 548 } 549 } 550 goto out; 551 } 552 553 /* 554 * Check that we don't get our parent node back, that would cause 555 * a pretty obvious deadlock. 556 */ 557 dpn = dvp->v_data; 558 if (lookup_msg->pvnr_newnode == dpn->pn_cookie) { 559 puffs_senderr(pmp, PUFFS_ERR_LOOKUP, EINVAL, 560 "lookup produced parent cookie", lookup_msg->pvnr_newnode); 561 error = EPROTO; 562 goto out; 563 } 564 565 error = puffs_cookie2vnode(pmp, lookup_msg->pvnr_newnode, 1, 1, &vp); 566 if (error == PUFFS_NOSUCHCOOKIE) { 567 error = puffs_getvnode(dvp->v_mount, 568 lookup_msg->pvnr_newnode, lookup_msg->pvnr_vtype, 569 lookup_msg->pvnr_size, lookup_msg->pvnr_rdev, &vp); 570 if (error) { 571 puffs_abortbutton(pmp, PUFFS_ABORT_LOOKUP, VPTOPNC(dvp), 572 lookup_msg->pvnr_newnode, ap->a_cnp); 573 goto out; 574 } 575 vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); 576 } else if (error) { 577 puffs_abortbutton(pmp, PUFFS_ABORT_LOOKUP, VPTOPNC(dvp), 578 lookup_msg->pvnr_newnode, ap->a_cnp); 579 goto out; 580 } 581 582 *ap->a_vpp = vp; 583 584 if ((cnp->cn_flags & MAKEENTRY) != 0 && PUFFS_USE_NAMECACHE(pmp)) 585 cache_enter(dvp, vp, cnp); 586 587 /* XXX */ 588 if ((lookup_msg->pvnr_cn.pkcn_flags & REQUIREDIR) == 0) 589 cnp->cn_flags &= ~REQUIREDIR; 590 if (lookup_msg->pvnr_cn.pkcn_consume) 591 cnp->cn_consume = MIN(lookup_msg->pvnr_cn.pkcn_consume, 592 strlen(cnp->cn_nameptr) - cnp->cn_namelen); 593 594 /* 595 * We need the name in remove and rmdir (well, rename too, but 596 * SAVESTART takes care of that) 597 */ 598 if (cnp->cn_nameiop == DELETE) 599 cnp->cn_flags |= SAVENAME; 600 601 out: 602 if (cnp->cn_flags & ISDOTDOT) 603 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 604 605 DPRINTF(("puffs_lookup: returning %d %p\n", error, *ap->a_vpp)); 606 PUFFS_MSG_RELEASE(lookup); 607 return error; 608 } 609 610 #define REFPN_AND_UNLOCKVP(a, b) \ 611 do { \ 612 mutex_enter(&b->pn_mtx); \ 613 puffs_referencenode(b); \ 614 mutex_exit(&b->pn_mtx); \ 615 VOP_UNLOCK(a); \ 616 } while (/*CONSTCOND*/0) 617 618 #define REFPN(b) \ 619 do { \ 620 mutex_enter(&b->pn_mtx); \ 621 puffs_referencenode(b); \ 622 mutex_exit(&b->pn_mtx); \ 623 } while (/*CONSTCOND*/0) 624 625 #define RELEPN_AND_VP(a, b) \ 626 do { \ 627 puffs_releasenode(b); \ 628 vrele(a); \ 629 } while (/*CONSTCOND*/0) 630 631 int 632 puffs_vnop_create(void *v) 633 { 634 struct vop_create_args /* { 635 const struct vnodeop_desc *a_desc; 636 struct vnode *a_dvp; 637 struct vnode **a_vpp; 638 struct componentname *a_cnp; 639 struct vattr *a_vap; 640 } */ *ap = v; 641 PUFFS_MSG_VARS(vn, create); 642 struct vnode *dvp = ap->a_dvp; 643 struct puffs_node *dpn = VPTOPP(dvp); 644 struct componentname *cnp = ap->a_cnp; 645 struct mount *mp = dvp->v_mount; 646 struct puffs_mount *pmp = MPTOPUFFSMP(mp); 647 int error; 648 649 DPRINTF(("puffs_create: dvp %p, cnp: %s\n", 650 dvp, ap->a_cnp->cn_nameptr)); 651 652 PUFFS_MSG_ALLOC(vn, create); 653 puffs_makecn(&create_msg->pvnr_cn, &create_msg->pvnr_cn_cred, 654 cnp, PUFFS_USE_FULLPNBUF(pmp)); 655 create_msg->pvnr_va = *ap->a_vap; 656 puffs_msg_setinfo(park_create, PUFFSOP_VN, 657 PUFFS_VN_CREATE, VPTOPNC(dvp)); 658 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_create, dvp->v_data, NULL, error); 659 660 error = checkerr(pmp, error, __func__); 661 if (error) 662 goto out; 663 664 error = puffs_newnode(mp, dvp, ap->a_vpp, 665 create_msg->pvnr_newnode, cnp, ap->a_vap->va_type, 0); 666 if (error) 667 puffs_abortbutton(pmp, PUFFS_ABORT_CREATE, dpn->pn_cookie, 668 create_msg->pvnr_newnode, cnp); 669 670 out: 671 vput(dvp); 672 if (error || (cnp->cn_flags & SAVESTART) == 0) 673 PNBUF_PUT(cnp->cn_pnbuf); 674 675 DPRINTF(("puffs_create: return %d\n", error)); 676 PUFFS_MSG_RELEASE(create); 677 return error; 678 } 679 680 int 681 puffs_vnop_mknod(void *v) 682 { 683 struct vop_mknod_args /* { 684 const struct vnodeop_desc *a_desc; 685 struct vnode *a_dvp; 686 struct vnode **a_vpp; 687 struct componentname *a_cnp; 688 struct vattr *a_vap; 689 } */ *ap = v; 690 PUFFS_MSG_VARS(vn, mknod); 691 struct vnode *dvp = ap->a_dvp; 692 struct puffs_node *dpn = VPTOPP(dvp); 693 struct componentname *cnp = ap->a_cnp; 694 struct mount *mp = dvp->v_mount; 695 struct puffs_mount *pmp = MPTOPUFFSMP(mp); 696 int error; 697 698 PUFFS_MSG_ALLOC(vn, mknod); 699 puffs_makecn(&mknod_msg->pvnr_cn, &mknod_msg->pvnr_cn_cred, 700 cnp, PUFFS_USE_FULLPNBUF(pmp)); 701 mknod_msg->pvnr_va = *ap->a_vap; 702 puffs_msg_setinfo(park_mknod, PUFFSOP_VN, 703 PUFFS_VN_MKNOD, VPTOPNC(dvp)); 704 705 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_mknod, dvp->v_data, NULL, error); 706 707 error = checkerr(pmp, error, __func__); 708 if (error) 709 goto out; 710 711 error = puffs_newnode(mp, dvp, ap->a_vpp, 712 mknod_msg->pvnr_newnode, cnp, ap->a_vap->va_type, 713 ap->a_vap->va_rdev); 714 if (error) 715 puffs_abortbutton(pmp, PUFFS_ABORT_MKNOD, dpn->pn_cookie, 716 mknod_msg->pvnr_newnode, cnp); 717 718 out: 719 vput(dvp); 720 PUFFS_MSG_RELEASE(mknod); 721 if (error || (cnp->cn_flags & SAVESTART) == 0) 722 PNBUF_PUT(cnp->cn_pnbuf); 723 return error; 724 } 725 726 int 727 puffs_vnop_open(void *v) 728 { 729 struct vop_open_args /* { 730 const struct vnodeop_desc *a_desc; 731 struct vnode *a_vp; 732 int a_mode; 733 kauth_cred_t a_cred; 734 } */ *ap = v; 735 PUFFS_MSG_VARS(vn, open); 736 struct vnode *vp = ap->a_vp; 737 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 738 int mode = ap->a_mode; 739 int error; 740 741 DPRINTF(("puffs_open: vp %p, mode 0x%x\n", vp, mode)); 742 743 if (vp->v_type == VREG && mode & FWRITE && !EXISTSOP(pmp, WRITE)) 744 ERROUT(EROFS); 745 746 if (!EXISTSOP(pmp, OPEN)) 747 ERROUT(0); 748 749 PUFFS_MSG_ALLOC(vn, open); 750 open_msg->pvnr_mode = mode; 751 puffs_credcvt(&open_msg->pvnr_cred, ap->a_cred); 752 puffs_msg_setinfo(park_open, PUFFSOP_VN, 753 PUFFS_VN_OPEN, VPTOPNC(vp)); 754 755 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_open, vp->v_data, NULL, error); 756 error = checkerr(pmp, error, __func__); 757 758 out: 759 DPRINTF(("puffs_open: returning %d\n", error)); 760 PUFFS_MSG_RELEASE(open); 761 return error; 762 } 763 764 int 765 puffs_vnop_close(void *v) 766 { 767 struct vop_close_args /* { 768 const struct vnodeop_desc *a_desc; 769 struct vnode *a_vp; 770 int a_fflag; 771 kauth_cred_t a_cred; 772 } */ *ap = v; 773 PUFFS_MSG_VARS(vn, close); 774 struct vnode *vp = ap->a_vp; 775 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 776 777 PUFFS_MSG_ALLOC(vn, close); 778 puffs_msg_setfaf(park_close); 779 close_msg->pvnr_fflag = ap->a_fflag; 780 puffs_credcvt(&close_msg->pvnr_cred, ap->a_cred); 781 puffs_msg_setinfo(park_close, PUFFSOP_VN, 782 PUFFS_VN_CLOSE, VPTOPNC(vp)); 783 784 puffs_msg_enqueue(pmp, park_close); 785 PUFFS_MSG_RELEASE(close); 786 return 0; 787 } 788 789 int 790 puffs_vnop_access(void *v) 791 { 792 struct vop_access_args /* { 793 const struct vnodeop_desc *a_desc; 794 struct vnode *a_vp; 795 int a_mode; 796 kauth_cred_t a_cred; 797 } */ *ap = v; 798 PUFFS_MSG_VARS(vn, access); 799 struct vnode *vp = ap->a_vp; 800 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 801 int mode = ap->a_mode; 802 int error; 803 804 if (mode & VWRITE) { 805 switch (vp->v_type) { 806 case VDIR: 807 case VLNK: 808 case VREG: 809 if ((vp->v_mount->mnt_flag & MNT_RDONLY) 810 || !EXISTSOP(pmp, WRITE)) 811 return EROFS; 812 break; 813 default: 814 break; 815 } 816 } 817 818 if (!EXISTSOP(pmp, ACCESS)) 819 return 0; 820 821 PUFFS_MSG_ALLOC(vn, access); 822 access_msg->pvnr_mode = ap->a_mode; 823 puffs_credcvt(&access_msg->pvnr_cred, ap->a_cred); 824 puffs_msg_setinfo(park_access, PUFFSOP_VN, 825 PUFFS_VN_ACCESS, VPTOPNC(vp)); 826 827 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_access, vp->v_data, NULL, error); 828 error = checkerr(pmp, error, __func__); 829 PUFFS_MSG_RELEASE(access); 830 831 return error; 832 } 833 834 int 835 puffs_vnop_getattr(void *v) 836 { 837 struct vop_getattr_args /* { 838 const struct vnodeop_desc *a_desc; 839 struct vnode *a_vp; 840 struct vattr *a_vap; 841 kauth_cred_t a_cred; 842 } */ *ap = v; 843 PUFFS_MSG_VARS(vn, getattr); 844 struct vnode *vp = ap->a_vp; 845 struct mount *mp = vp->v_mount; 846 struct puffs_mount *pmp = MPTOPUFFSMP(mp); 847 struct vattr *vap, *rvap; 848 struct puffs_node *pn = VPTOPP(vp); 849 int error = 0; 850 851 REFPN(pn); 852 vap = ap->a_vap; 853 854 PUFFS_MSG_ALLOC(vn, getattr); 855 vattr_null(&getattr_msg->pvnr_va); 856 puffs_credcvt(&getattr_msg->pvnr_cred, ap->a_cred); 857 puffs_msg_setinfo(park_getattr, PUFFSOP_VN, 858 PUFFS_VN_GETATTR, VPTOPNC(vp)); 859 860 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_getattr, vp->v_data, NULL, error); 861 error = checkerr(pmp, error, __func__); 862 if (error) 863 goto out; 864 865 rvap = &getattr_msg->pvnr_va; 866 /* 867 * Don't listen to the file server regarding special device 868 * size info, the file server doesn't know anything about them. 869 */ 870 if (vp->v_type == VBLK || vp->v_type == VCHR) 871 rvap->va_size = vp->v_size; 872 873 /* Ditto for blocksize (ufs comment: this doesn't belong here) */ 874 if (vp->v_type == VBLK) 875 rvap->va_blocksize = BLKDEV_IOSIZE; 876 else if (vp->v_type == VCHR) 877 rvap->va_blocksize = MAXBSIZE; 878 879 (void) memcpy(vap, rvap, sizeof(struct vattr)); 880 vap->va_fsid = mp->mnt_stat.f_fsidx.__fsid_val[0]; 881 882 if (pn->pn_stat & PNODE_METACACHE_ATIME) 883 vap->va_atime = pn->pn_mc_atime; 884 if (pn->pn_stat & PNODE_METACACHE_CTIME) 885 vap->va_ctime = pn->pn_mc_ctime; 886 if (pn->pn_stat & PNODE_METACACHE_MTIME) 887 vap->va_mtime = pn->pn_mc_mtime; 888 if (pn->pn_stat & PNODE_METACACHE_SIZE) { 889 vap->va_size = pn->pn_mc_size; 890 } else { 891 if (rvap->va_size != VNOVAL 892 && vp->v_type != VBLK && vp->v_type != VCHR) { 893 uvm_vnp_setsize(vp, rvap->va_size); 894 pn->pn_serversize = rvap->va_size; 895 } 896 } 897 898 out: 899 puffs_releasenode(pn); 900 PUFFS_MSG_RELEASE(getattr); 901 return error; 902 } 903 904 #define SETATTR_CHSIZE 0x01 905 #define SETATTR_ASYNC 0x02 906 static int 907 dosetattr(struct vnode *vp, struct vattr *vap, kauth_cred_t cred, int flags) 908 { 909 PUFFS_MSG_VARS(vn, setattr); 910 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 911 struct puffs_node *pn = vp->v_data; 912 int error = 0; 913 914 if ((vp->v_mount->mnt_flag & MNT_RDONLY) && 915 (vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL 916 || vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL 917 || vap->va_mode != (mode_t)VNOVAL)) 918 return EROFS; 919 920 if ((vp->v_mount->mnt_flag & MNT_RDONLY) 921 && vp->v_type == VREG && vap->va_size != VNOVAL) 922 return EROFS; 923 924 /* 925 * Flush metacache first. If we are called with some explicit 926 * parameters, treat them as information overriding metacache 927 * information. 928 */ 929 if (pn->pn_stat & PNODE_METACACHE_MASK) { 930 if ((pn->pn_stat & PNODE_METACACHE_ATIME) 931 && vap->va_atime.tv_sec == VNOVAL) 932 vap->va_atime = pn->pn_mc_atime; 933 if ((pn->pn_stat & PNODE_METACACHE_CTIME) 934 && vap->va_ctime.tv_sec == VNOVAL) 935 vap->va_ctime = pn->pn_mc_ctime; 936 if ((pn->pn_stat & PNODE_METACACHE_MTIME) 937 && vap->va_mtime.tv_sec == VNOVAL) 938 vap->va_mtime = pn->pn_mc_mtime; 939 if ((pn->pn_stat & PNODE_METACACHE_SIZE) 940 && vap->va_size == VNOVAL) 941 vap->va_size = pn->pn_mc_size; 942 943 pn->pn_stat &= ~PNODE_METACACHE_MASK; 944 } 945 946 PUFFS_MSG_ALLOC(vn, setattr); 947 (void)memcpy(&setattr_msg->pvnr_va, vap, sizeof(struct vattr)); 948 puffs_credcvt(&setattr_msg->pvnr_cred, cred); 949 puffs_msg_setinfo(park_setattr, PUFFSOP_VN, 950 PUFFS_VN_SETATTR, VPTOPNC(vp)); 951 if (flags & SETATTR_ASYNC) 952 puffs_msg_setfaf(park_setattr); 953 954 puffs_msg_enqueue(pmp, park_setattr); 955 if ((flags & SETATTR_ASYNC) == 0) 956 error = puffs_msg_wait2(pmp, park_setattr, vp->v_data, NULL); 957 PUFFS_MSG_RELEASE(setattr); 958 if ((flags & SETATTR_ASYNC) == 0) { 959 error = checkerr(pmp, error, __func__); 960 if (error) 961 return error; 962 } else { 963 error = 0; 964 } 965 966 if (vap->va_size != VNOVAL) { 967 pn->pn_serversize = vap->va_size; 968 if (flags & SETATTR_CHSIZE) 969 uvm_vnp_setsize(vp, vap->va_size); 970 } 971 972 return 0; 973 } 974 975 int 976 puffs_vnop_setattr(void *v) 977 { 978 struct vop_getattr_args /* { 979 const struct vnodeop_desc *a_desc; 980 struct vnode *a_vp; 981 struct vattr *a_vap; 982 kauth_cred_t a_cred; 983 } */ *ap = v; 984 985 return dosetattr(ap->a_vp, ap->a_vap, ap->a_cred, SETATTR_CHSIZE); 986 } 987 988 static __inline int 989 doinact(struct puffs_mount *pmp, int iaflag) 990 { 991 992 if (EXISTSOP(pmp, INACTIVE)) 993 if (pmp->pmp_flags & PUFFS_KFLAG_IAONDEMAND) 994 if (iaflag || ALLOPS(pmp)) 995 return 1; 996 else 997 return 0; 998 else 999 return 1; 1000 else 1001 return 0; 1002 } 1003 1004 static void 1005 callinactive(struct puffs_mount *pmp, puffs_cookie_t ck, int iaflag) 1006 { 1007 int error; 1008 PUFFS_MSG_VARS(vn, inactive); 1009 1010 if (doinact(pmp, iaflag)) { 1011 PUFFS_MSG_ALLOC(vn, inactive); 1012 puffs_msg_setinfo(park_inactive, PUFFSOP_VN, 1013 PUFFS_VN_INACTIVE, ck); 1014 1015 PUFFS_MSG_ENQUEUEWAIT(pmp, park_inactive, error); 1016 PUFFS_MSG_RELEASE(inactive); 1017 } 1018 } 1019 1020 /* XXX: callinactive can't setback */ 1021 int 1022 puffs_vnop_inactive(void *v) 1023 { 1024 struct vop_inactive_args /* { 1025 const struct vnodeop_desc *a_desc; 1026 struct vnode *a_vp; 1027 } */ *ap = v; 1028 PUFFS_MSG_VARS(vn, inactive); 1029 struct vnode *vp = ap->a_vp; 1030 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 1031 struct puffs_node *pnode; 1032 int error; 1033 1034 pnode = vp->v_data; 1035 1036 if (doinact(pmp, pnode->pn_stat & PNODE_DOINACT)) { 1037 flushvncache(vp, 0, 0, false); 1038 PUFFS_MSG_ALLOC(vn, inactive); 1039 puffs_msg_setinfo(park_inactive, PUFFSOP_VN, 1040 PUFFS_VN_INACTIVE, VPTOPNC(vp)); 1041 1042 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_inactive, vp->v_data, 1043 NULL, error); 1044 PUFFS_MSG_RELEASE(inactive); 1045 } 1046 pnode->pn_stat &= ~PNODE_DOINACT; 1047 1048 /* 1049 * file server thinks it's gone? then don't be afraid care, 1050 * node's life was already all it would ever be 1051 */ 1052 if (pnode->pn_stat & PNODE_NOREFS) { 1053 pnode->pn_stat |= PNODE_DYING; 1054 *ap->a_recycle = true; 1055 } 1056 1057 VOP_UNLOCK(vp); 1058 1059 return 0; 1060 } 1061 1062 static void 1063 callreclaim(struct puffs_mount *pmp, puffs_cookie_t ck) 1064 { 1065 PUFFS_MSG_VARS(vn, reclaim); 1066 1067 if (!EXISTSOP(pmp, RECLAIM)) 1068 return; 1069 1070 PUFFS_MSG_ALLOC(vn, reclaim); 1071 puffs_msg_setfaf(park_reclaim); 1072 puffs_msg_setinfo(park_reclaim, PUFFSOP_VN, PUFFS_VN_RECLAIM, ck); 1073 1074 puffs_msg_enqueue(pmp, park_reclaim); 1075 PUFFS_MSG_RELEASE(reclaim); 1076 } 1077 1078 /* 1079 * always FAF, we don't really care if the server wants to fail to 1080 * reclaim the node or not 1081 */ 1082 int 1083 puffs_vnop_reclaim(void *v) 1084 { 1085 struct vop_reclaim_args /* { 1086 const struct vnodeop_desc *a_desc; 1087 struct vnode *a_vp; 1088 } */ *ap = v; 1089 struct vnode *vp = ap->a_vp; 1090 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 1091 struct puffs_node *pnode = vp->v_data; 1092 bool notifyserver = true; 1093 1094 /* 1095 * first things first: check if someone is trying to reclaim the 1096 * root vnode. do not allow that to travel to userspace. 1097 * Note that we don't need to take the lock similarly to 1098 * puffs_root(), since there is only one of us. 1099 */ 1100 if (vp->v_vflag & VV_ROOT) { 1101 mutex_enter(&pmp->pmp_lock); 1102 KASSERT(pmp->pmp_root != NULL); 1103 pmp->pmp_root = NULL; 1104 mutex_exit(&pmp->pmp_lock); 1105 notifyserver = false; 1106 } 1107 1108 /* 1109 * purge info from kernel before issueing FAF, since we 1110 * don't really know when we'll get around to it after 1111 * that and someone might race us into node creation 1112 */ 1113 mutex_enter(&pmp->pmp_lock); 1114 LIST_REMOVE(pnode, pn_hashent); 1115 mutex_exit(&pmp->pmp_lock); 1116 if (PUFFS_USE_NAMECACHE(pmp)) 1117 cache_purge(vp); 1118 1119 if (notifyserver) 1120 callreclaim(MPTOPUFFSMP(vp->v_mount), VPTOPNC(vp)); 1121 1122 puffs_putvnode(vp); 1123 1124 return 0; 1125 } 1126 1127 #define CSIZE sizeof(**ap->a_cookies) 1128 int 1129 puffs_vnop_readdir(void *v) 1130 { 1131 struct vop_readdir_args /* { 1132 const struct vnodeop_desc *a_desc; 1133 struct vnode *a_vp; 1134 struct uio *a_uio; 1135 kauth_cred_t a_cred; 1136 int *a_eofflag; 1137 off_t **a_cookies; 1138 int *a_ncookies; 1139 } */ *ap = v; 1140 PUFFS_MSG_VARS(vn, readdir); 1141 struct vnode *vp = ap->a_vp; 1142 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 1143 size_t argsize, tomove, cookiemem, cookiesmax; 1144 struct uio *uio = ap->a_uio; 1145 size_t howmuch, resid; 1146 int error; 1147 1148 /* 1149 * ok, so we need: resid + cookiemem = maxreq 1150 * => resid + cookiesize * (resid/minsize) = maxreq 1151 * => resid + cookiesize/minsize * resid = maxreq 1152 * => (cookiesize/minsize + 1) * resid = maxreq 1153 * => resid = maxreq / (cookiesize/minsize + 1) 1154 * 1155 * Since cookiesize <= minsize and we're not very big on floats, 1156 * we approximate that to be 1. Therefore: 1157 * 1158 * resid = maxreq / 2; 1159 * 1160 * Well, at least we didn't have to use differential equations 1161 * or the Gram-Schmidt process. 1162 * 1163 * (yes, I'm very afraid of this) 1164 */ 1165 KASSERT(CSIZE <= _DIRENT_MINSIZE((struct dirent *)0)); 1166 1167 if (ap->a_cookies) { 1168 KASSERT(ap->a_ncookies != NULL); 1169 if (pmp->pmp_args.pa_fhsize == 0) 1170 return EOPNOTSUPP; 1171 resid = PUFFS_TOMOVE(uio->uio_resid, pmp) / 2; 1172 cookiesmax = resid/_DIRENT_MINSIZE((struct dirent *)0); 1173 cookiemem = ALIGN(cookiesmax*CSIZE); /* play safe */ 1174 } else { 1175 resid = PUFFS_TOMOVE(uio->uio_resid, pmp); 1176 cookiesmax = 0; 1177 cookiemem = 0; 1178 } 1179 1180 argsize = sizeof(struct puffs_vnmsg_readdir); 1181 tomove = resid + cookiemem; 1182 puffs_msgmem_alloc(argsize + tomove, &park_readdir, 1183 (void *)&readdir_msg, 1); 1184 1185 puffs_credcvt(&readdir_msg->pvnr_cred, ap->a_cred); 1186 readdir_msg->pvnr_offset = uio->uio_offset; 1187 readdir_msg->pvnr_resid = resid; 1188 readdir_msg->pvnr_ncookies = cookiesmax; 1189 readdir_msg->pvnr_eofflag = 0; 1190 readdir_msg->pvnr_dentoff = cookiemem; 1191 puffs_msg_setinfo(park_readdir, PUFFSOP_VN, 1192 PUFFS_VN_READDIR, VPTOPNC(vp)); 1193 puffs_msg_setdelta(park_readdir, tomove); 1194 1195 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_readdir, vp->v_data, NULL, error); 1196 error = checkerr(pmp, error, __func__); 1197 if (error) 1198 goto out; 1199 1200 /* userspace is cheating? */ 1201 if (readdir_msg->pvnr_resid > resid) { 1202 puffs_senderr(pmp, PUFFS_ERR_READDIR, E2BIG, 1203 "resid grew", VPTOPNC(vp)); 1204 ERROUT(EPROTO); 1205 } 1206 if (readdir_msg->pvnr_ncookies > cookiesmax) { 1207 puffs_senderr(pmp, PUFFS_ERR_READDIR, E2BIG, 1208 "too many cookies", VPTOPNC(vp)); 1209 ERROUT(EPROTO); 1210 } 1211 1212 /* check eof */ 1213 if (readdir_msg->pvnr_eofflag) 1214 *ap->a_eofflag = 1; 1215 1216 /* bouncy-wouncy with the directory data */ 1217 howmuch = resid - readdir_msg->pvnr_resid; 1218 1219 /* force eof if no data was returned (getcwd() needs this) */ 1220 if (howmuch == 0) { 1221 *ap->a_eofflag = 1; 1222 goto out; 1223 } 1224 1225 error = uiomove(readdir_msg->pvnr_data + cookiemem, howmuch, uio); 1226 if (error) 1227 goto out; 1228 1229 /* provide cookies to caller if so desired */ 1230 if (ap->a_cookies) { 1231 *ap->a_cookies = malloc(readdir_msg->pvnr_ncookies*CSIZE, 1232 M_TEMP, M_WAITOK); 1233 *ap->a_ncookies = readdir_msg->pvnr_ncookies; 1234 memcpy(*ap->a_cookies, readdir_msg->pvnr_data, 1235 *ap->a_ncookies*CSIZE); 1236 } 1237 1238 /* next readdir starts here */ 1239 uio->uio_offset = readdir_msg->pvnr_offset; 1240 1241 out: 1242 puffs_msgmem_release(park_readdir); 1243 return error; 1244 } 1245 #undef CSIZE 1246 1247 /* 1248 * poll works by consuming the bitmask in pn_revents. If there are 1249 * events available, poll returns immediately. If not, it issues a 1250 * poll to userspace, selrecords itself and returns with no available 1251 * events. When the file server returns, it executes puffs_parkdone_poll(), 1252 * where available events are added to the bitmask. selnotify() is 1253 * then also executed by that function causing us to enter here again 1254 * and hopefully find the missing bits (unless someone got them first, 1255 * in which case it starts all over again). 1256 */ 1257 int 1258 puffs_vnop_poll(void *v) 1259 { 1260 struct vop_poll_args /* { 1261 const struct vnodeop_desc *a_desc; 1262 struct vnode *a_vp; 1263 int a_events; 1264 } */ *ap = v; 1265 PUFFS_MSG_VARS(vn, poll); 1266 struct vnode *vp = ap->a_vp; 1267 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 1268 struct puffs_node *pn = vp->v_data; 1269 int events, error; 1270 1271 if (EXISTSOP(pmp, POLL)) { 1272 mutex_enter(&pn->pn_mtx); 1273 events = pn->pn_revents & ap->a_events; 1274 if (events & ap->a_events) { 1275 pn->pn_revents &= ~ap->a_events; 1276 mutex_exit(&pn->pn_mtx); 1277 1278 return events; 1279 } else { 1280 puffs_referencenode(pn); 1281 mutex_exit(&pn->pn_mtx); 1282 1283 PUFFS_MSG_ALLOC(vn, poll); 1284 poll_msg->pvnr_events = ap->a_events; 1285 puffs_msg_setinfo(park_poll, PUFFSOP_VN, 1286 PUFFS_VN_POLL, VPTOPNC(vp)); 1287 puffs_msg_setcall(park_poll, puffs_parkdone_poll, pn); 1288 selrecord(curlwp, &pn->pn_sel); 1289 1290 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_poll, vp->v_data, 1291 NULL, error); 1292 PUFFS_MSG_RELEASE(poll); 1293 1294 return 0; 1295 } 1296 } else { 1297 return genfs_poll(v); 1298 } 1299 } 1300 1301 static int 1302 flushvncache(struct vnode *vp, off_t offlo, off_t offhi, bool wait) 1303 { 1304 struct puffs_node *pn = VPTOPP(vp); 1305 struct vattr va; 1306 int pflags, error; 1307 1308 /* flush out information from our metacache, see vop_setattr */ 1309 if (pn->pn_stat & PNODE_METACACHE_MASK 1310 && (pn->pn_stat & PNODE_DYING) == 0) { 1311 vattr_null(&va); 1312 error = dosetattr(vp, &va, FSCRED, 1313 SETATTR_CHSIZE | (wait ? 0 : SETATTR_ASYNC)); 1314 if (error) 1315 return error; 1316 } 1317 1318 /* 1319 * flush pages to avoid being overly dirty 1320 */ 1321 pflags = PGO_CLEANIT; 1322 if (wait) 1323 pflags |= PGO_SYNCIO; 1324 mutex_enter(&vp->v_interlock); 1325 return VOP_PUTPAGES(vp, trunc_page(offlo), round_page(offhi), pflags); 1326 } 1327 1328 int 1329 puffs_vnop_fsync(void *v) 1330 { 1331 struct vop_fsync_args /* { 1332 const struct vnodeop_desc *a_desc; 1333 struct vnode *a_vp; 1334 kauth_cred_t a_cred; 1335 int a_flags; 1336 off_t a_offlo; 1337 off_t a_offhi; 1338 } */ *ap = v; 1339 PUFFS_MSG_VARS(vn, fsync); 1340 struct vnode *vp = ap->a_vp; 1341 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 1342 struct puffs_node *pn = VPTOPP(vp); 1343 int error, dofaf; 1344 1345 error = flushvncache(vp, ap->a_offlo, ap->a_offhi, 1346 (ap->a_flags & FSYNC_WAIT) == FSYNC_WAIT); 1347 if (error) 1348 return error; 1349 1350 /* 1351 * HELLO! We exit already here if the user server does not 1352 * support fsync OR if we should call fsync for a node which 1353 * has references neither in the kernel or the fs server. 1354 * Otherwise we continue to issue fsync() forward. 1355 */ 1356 if (!EXISTSOP(pmp, FSYNC) || (pn->pn_stat & PNODE_DYING)) 1357 return 0; 1358 1359 dofaf = (ap->a_flags & FSYNC_WAIT) == 0 || ap->a_flags == FSYNC_LAZY; 1360 /* 1361 * We abuse VXLOCK to mean "vnode is going to die", so we issue 1362 * only FAFs for those. Otherwise there's a danger of deadlock, 1363 * since the execution context here might be the user server 1364 * doing some operation on another fs, which in turn caused a 1365 * vnode to be reclaimed from the freelist for this fs. 1366 */ 1367 if (dofaf == 0) { 1368 mutex_enter(&vp->v_interlock); 1369 if (vp->v_iflag & VI_XLOCK) 1370 dofaf = 1; 1371 mutex_exit(&vp->v_interlock); 1372 } 1373 1374 PUFFS_MSG_ALLOC(vn, fsync); 1375 if (dofaf) 1376 puffs_msg_setfaf(park_fsync); 1377 1378 puffs_credcvt(&fsync_msg->pvnr_cred, ap->a_cred); 1379 fsync_msg->pvnr_flags = ap->a_flags; 1380 fsync_msg->pvnr_offlo = ap->a_offlo; 1381 fsync_msg->pvnr_offhi = ap->a_offhi; 1382 puffs_msg_setinfo(park_fsync, PUFFSOP_VN, 1383 PUFFS_VN_FSYNC, VPTOPNC(vp)); 1384 1385 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_fsync, vp->v_data, NULL, error); 1386 PUFFS_MSG_RELEASE(fsync); 1387 1388 error = checkerr(pmp, error, __func__); 1389 1390 return error; 1391 } 1392 1393 int 1394 puffs_vnop_seek(void *v) 1395 { 1396 struct vop_seek_args /* { 1397 const struct vnodeop_desc *a_desc; 1398 struct vnode *a_vp; 1399 off_t a_oldoff; 1400 off_t a_newoff; 1401 kauth_cred_t a_cred; 1402 } */ *ap = v; 1403 PUFFS_MSG_VARS(vn, seek); 1404 struct vnode *vp = ap->a_vp; 1405 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 1406 int error; 1407 1408 PUFFS_MSG_ALLOC(vn, seek); 1409 seek_msg->pvnr_oldoff = ap->a_oldoff; 1410 seek_msg->pvnr_newoff = ap->a_newoff; 1411 puffs_credcvt(&seek_msg->pvnr_cred, ap->a_cred); 1412 puffs_msg_setinfo(park_seek, PUFFSOP_VN, 1413 PUFFS_VN_SEEK, VPTOPNC(vp)); 1414 1415 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_seek, vp->v_data, NULL, error); 1416 PUFFS_MSG_RELEASE(seek); 1417 return checkerr(pmp, error, __func__); 1418 } 1419 1420 static int 1421 callremove(struct puffs_mount *pmp, puffs_cookie_t dck, puffs_cookie_t ck, 1422 struct componentname *cnp) 1423 { 1424 PUFFS_MSG_VARS(vn, remove); 1425 int error; 1426 1427 PUFFS_MSG_ALLOC(vn, remove); 1428 remove_msg->pvnr_cookie_targ = ck; 1429 puffs_makecn(&remove_msg->pvnr_cn, &remove_msg->pvnr_cn_cred, 1430 cnp, PUFFS_USE_FULLPNBUF(pmp)); 1431 puffs_msg_setinfo(park_remove, PUFFSOP_VN, PUFFS_VN_REMOVE, dck); 1432 1433 PUFFS_MSG_ENQUEUEWAIT(pmp, park_remove, error); 1434 PUFFS_MSG_RELEASE(remove); 1435 1436 return checkerr(pmp, error, __func__); 1437 } 1438 1439 /* 1440 * XXX: can't use callremove now because can't catch setbacks with 1441 * it due to lack of a pnode argument. 1442 */ 1443 int 1444 puffs_vnop_remove(void *v) 1445 { 1446 struct vop_remove_args /* { 1447 const struct vnodeop_desc *a_desc; 1448 struct vnode *a_dvp; 1449 struct vnode *a_vp; 1450 struct componentname *a_cnp; 1451 } */ *ap = v; 1452 PUFFS_MSG_VARS(vn, remove); 1453 struct vnode *dvp = ap->a_dvp; 1454 struct vnode *vp = ap->a_vp; 1455 struct puffs_node *dpn = VPTOPP(dvp); 1456 struct puffs_node *pn = VPTOPP(vp); 1457 struct componentname *cnp = ap->a_cnp; 1458 struct mount *mp = dvp->v_mount; 1459 struct puffs_mount *pmp = MPTOPUFFSMP(mp); 1460 int error; 1461 1462 PUFFS_MSG_ALLOC(vn, remove); 1463 remove_msg->pvnr_cookie_targ = VPTOPNC(vp); 1464 puffs_makecn(&remove_msg->pvnr_cn, &remove_msg->pvnr_cn_cred, 1465 cnp, PUFFS_USE_FULLPNBUF(pmp)); 1466 puffs_msg_setinfo(park_remove, PUFFSOP_VN, 1467 PUFFS_VN_REMOVE, VPTOPNC(dvp)); 1468 1469 puffs_msg_enqueue(pmp, park_remove); 1470 REFPN_AND_UNLOCKVP(dvp, dpn); 1471 if (dvp == vp) 1472 REFPN(pn); 1473 else 1474 REFPN_AND_UNLOCKVP(vp, pn); 1475 error = puffs_msg_wait2(pmp, park_remove, dpn, pn); 1476 1477 PUFFS_MSG_RELEASE(remove); 1478 1479 RELEPN_AND_VP(dvp, dpn); 1480 RELEPN_AND_VP(vp, pn); 1481 1482 error = checkerr(pmp, error, __func__); 1483 if (error || (cnp->cn_flags & SAVESTART) == 0) 1484 PNBUF_PUT(cnp->cn_pnbuf); 1485 return error; 1486 } 1487 1488 int 1489 puffs_vnop_mkdir(void *v) 1490 { 1491 struct vop_mkdir_args /* { 1492 const struct vnodeop_desc *a_desc; 1493 struct vnode *a_dvp; 1494 struct vnode **a_vpp; 1495 struct componentname *a_cnp; 1496 struct vattr *a_vap; 1497 } */ *ap = v; 1498 PUFFS_MSG_VARS(vn, mkdir); 1499 struct vnode *dvp = ap->a_dvp; 1500 struct puffs_node *dpn = VPTOPP(dvp); 1501 struct componentname *cnp = ap->a_cnp; 1502 struct mount *mp = dvp->v_mount; 1503 struct puffs_mount *pmp = MPTOPUFFSMP(mp); 1504 int error; 1505 1506 PUFFS_MSG_ALLOC(vn, mkdir); 1507 puffs_makecn(&mkdir_msg->pvnr_cn, &mkdir_msg->pvnr_cn_cred, 1508 cnp, PUFFS_USE_FULLPNBUF(pmp)); 1509 mkdir_msg->pvnr_va = *ap->a_vap; 1510 puffs_msg_setinfo(park_mkdir, PUFFSOP_VN, 1511 PUFFS_VN_MKDIR, VPTOPNC(dvp)); 1512 1513 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_mkdir, dvp->v_data, NULL, error); 1514 1515 error = checkerr(pmp, error, __func__); 1516 if (error) 1517 goto out; 1518 1519 error = puffs_newnode(mp, dvp, ap->a_vpp, 1520 mkdir_msg->pvnr_newnode, cnp, VDIR, 0); 1521 if (error) 1522 puffs_abortbutton(pmp, PUFFS_ABORT_MKDIR, dpn->pn_cookie, 1523 mkdir_msg->pvnr_newnode, cnp); 1524 1525 out: 1526 vput(dvp); 1527 PUFFS_MSG_RELEASE(mkdir); 1528 if (error || (cnp->cn_flags & SAVESTART) == 0) 1529 PNBUF_PUT(cnp->cn_pnbuf); 1530 return error; 1531 } 1532 1533 static int 1534 callrmdir(struct puffs_mount *pmp, puffs_cookie_t dck, puffs_cookie_t ck, 1535 struct componentname *cnp) 1536 { 1537 PUFFS_MSG_VARS(vn, rmdir); 1538 int error; 1539 1540 PUFFS_MSG_ALLOC(vn, rmdir); 1541 rmdir_msg->pvnr_cookie_targ = ck; 1542 puffs_makecn(&rmdir_msg->pvnr_cn, &rmdir_msg->pvnr_cn_cred, 1543 cnp, PUFFS_USE_FULLPNBUF(pmp)); 1544 puffs_msg_setinfo(park_rmdir, PUFFSOP_VN, PUFFS_VN_RMDIR, dck); 1545 1546 PUFFS_MSG_ENQUEUEWAIT(pmp, park_rmdir, error); 1547 PUFFS_MSG_RELEASE(rmdir); 1548 1549 return checkerr(pmp, error, __func__); 1550 } 1551 1552 int 1553 puffs_vnop_rmdir(void *v) 1554 { 1555 struct vop_rmdir_args /* { 1556 const struct vnodeop_desc *a_desc; 1557 struct vnode *a_dvp; 1558 struct vnode *a_vp; 1559 struct componentname *a_cnp; 1560 } */ *ap = v; 1561 PUFFS_MSG_VARS(vn, rmdir); 1562 struct vnode *dvp = ap->a_dvp; 1563 struct vnode *vp = ap->a_vp; 1564 struct puffs_node *dpn = VPTOPP(dvp); 1565 struct puffs_node *pn = VPTOPP(vp); 1566 struct puffs_mount *pmp = MPTOPUFFSMP(dvp->v_mount); 1567 struct componentname *cnp = ap->a_cnp; 1568 int error; 1569 1570 PUFFS_MSG_ALLOC(vn, rmdir); 1571 rmdir_msg->pvnr_cookie_targ = VPTOPNC(vp); 1572 puffs_makecn(&rmdir_msg->pvnr_cn, &rmdir_msg->pvnr_cn_cred, 1573 cnp, PUFFS_USE_FULLPNBUF(pmp)); 1574 puffs_msg_setinfo(park_rmdir, PUFFSOP_VN, 1575 PUFFS_VN_RMDIR, VPTOPNC(dvp)); 1576 1577 puffs_msg_enqueue(pmp, park_rmdir); 1578 REFPN_AND_UNLOCKVP(dvp, dpn); 1579 REFPN_AND_UNLOCKVP(vp, pn); 1580 error = puffs_msg_wait2(pmp, park_rmdir, dpn, pn); 1581 1582 PUFFS_MSG_RELEASE(rmdir); 1583 1584 /* XXX: some call cache_purge() *for both vnodes* here, investigate */ 1585 RELEPN_AND_VP(dvp, dpn); 1586 RELEPN_AND_VP(vp, pn); 1587 1588 if (error || (cnp->cn_flags & SAVESTART) == 0) 1589 PNBUF_PUT(cnp->cn_pnbuf); 1590 1591 return error; 1592 } 1593 1594 int 1595 puffs_vnop_link(void *v) 1596 { 1597 struct vop_link_args /* { 1598 const struct vnodeop_desc *a_desc; 1599 struct vnode *a_dvp; 1600 struct vnode *a_vp; 1601 struct componentname *a_cnp; 1602 } */ *ap = v; 1603 PUFFS_MSG_VARS(vn, link); 1604 struct vnode *dvp = ap->a_dvp; 1605 struct vnode *vp = ap->a_vp; 1606 struct puffs_node *dpn = VPTOPP(dvp); 1607 struct puffs_node *pn = VPTOPP(vp); 1608 struct puffs_mount *pmp = MPTOPUFFSMP(dvp->v_mount); 1609 struct componentname *cnp = ap->a_cnp; 1610 int error; 1611 1612 PUFFS_MSG_ALLOC(vn, link); 1613 link_msg->pvnr_cookie_targ = VPTOPNC(vp); 1614 puffs_makecn(&link_msg->pvnr_cn, &link_msg->pvnr_cn_cred, 1615 cnp, PUFFS_USE_FULLPNBUF(pmp)); 1616 puffs_msg_setinfo(park_link, PUFFSOP_VN, 1617 PUFFS_VN_LINK, VPTOPNC(dvp)); 1618 1619 puffs_msg_enqueue(pmp, park_link); 1620 REFPN_AND_UNLOCKVP(dvp, dpn); 1621 REFPN(pn); 1622 error = puffs_msg_wait2(pmp, park_link, dpn, pn); 1623 1624 PUFFS_MSG_RELEASE(link); 1625 1626 error = checkerr(pmp, error, __func__); 1627 1628 /* 1629 * XXX: stay in touch with the cache. I don't like this, but 1630 * don't have a better solution either. See also puffs_rename(). 1631 */ 1632 if (error == 0) 1633 puffs_updatenode(pn, PUFFS_UPDATECTIME, 0); 1634 1635 PNBUF_PUT(cnp->cn_pnbuf); 1636 RELEPN_AND_VP(dvp, dpn); 1637 puffs_releasenode(pn); 1638 1639 return error; 1640 } 1641 1642 int 1643 puffs_vnop_symlink(void *v) 1644 { 1645 struct vop_symlink_args /* { 1646 const struct vnodeop_desc *a_desc; 1647 struct vnode *a_dvp; 1648 struct vnode **a_vpp; 1649 struct componentname *a_cnp; 1650 struct vattr *a_vap; 1651 char *a_target; 1652 } */ *ap = v; 1653 PUFFS_MSG_VARS(vn, symlink); 1654 struct vnode *dvp = ap->a_dvp; 1655 struct puffs_node *dpn = VPTOPP(dvp); 1656 struct mount *mp = dvp->v_mount; 1657 struct puffs_mount *pmp = MPTOPUFFSMP(dvp->v_mount); 1658 struct componentname *cnp = ap->a_cnp; 1659 int error; 1660 1661 *ap->a_vpp = NULL; 1662 1663 PUFFS_MSG_ALLOC(vn, symlink); 1664 puffs_makecn(&symlink_msg->pvnr_cn, &symlink_msg->pvnr_cn_cred, 1665 cnp, PUFFS_USE_FULLPNBUF(pmp)); 1666 symlink_msg->pvnr_va = *ap->a_vap; 1667 (void)strlcpy(symlink_msg->pvnr_link, ap->a_target, 1668 sizeof(symlink_msg->pvnr_link)); 1669 puffs_msg_setinfo(park_symlink, PUFFSOP_VN, 1670 PUFFS_VN_SYMLINK, VPTOPNC(dvp)); 1671 1672 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_symlink, dvp->v_data, NULL, error); 1673 1674 error = checkerr(pmp, error, __func__); 1675 if (error) 1676 goto out; 1677 1678 error = puffs_newnode(mp, dvp, ap->a_vpp, 1679 symlink_msg->pvnr_newnode, cnp, VLNK, 0); 1680 if (error) 1681 puffs_abortbutton(pmp, PUFFS_ABORT_SYMLINK, dpn->pn_cookie, 1682 symlink_msg->pvnr_newnode, cnp); 1683 1684 out: 1685 vput(dvp); 1686 PUFFS_MSG_RELEASE(symlink); 1687 if (error || (cnp->cn_flags & SAVESTART) == 0) 1688 PNBUF_PUT(cnp->cn_pnbuf); 1689 1690 return error; 1691 } 1692 1693 int 1694 puffs_vnop_readlink(void *v) 1695 { 1696 struct vop_readlink_args /* { 1697 const struct vnodeop_desc *a_desc; 1698 struct vnode *a_vp; 1699 struct uio *a_uio; 1700 kauth_cred_t a_cred; 1701 } */ *ap = v; 1702 PUFFS_MSG_VARS(vn, readlink); 1703 struct vnode *vp = ap->a_vp; 1704 struct puffs_mount *pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 1705 size_t linklen; 1706 int error; 1707 1708 PUFFS_MSG_ALLOC(vn, readlink); 1709 puffs_credcvt(&readlink_msg->pvnr_cred, ap->a_cred); 1710 linklen = sizeof(readlink_msg->pvnr_link); 1711 readlink_msg->pvnr_linklen = linklen; 1712 puffs_msg_setinfo(park_readlink, PUFFSOP_VN, 1713 PUFFS_VN_READLINK, VPTOPNC(vp)); 1714 1715 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_readlink, vp->v_data, NULL, error); 1716 error = checkerr(pmp, error, __func__); 1717 if (error) 1718 goto out; 1719 1720 /* bad bad user file server */ 1721 if (readlink_msg->pvnr_linklen > linklen) { 1722 puffs_senderr(pmp, PUFFS_ERR_READLINK, E2BIG, 1723 "linklen too big", VPTOPNC(ap->a_vp)); 1724 error = EPROTO; 1725 goto out; 1726 } 1727 1728 error = uiomove(&readlink_msg->pvnr_link, readlink_msg->pvnr_linklen, 1729 ap->a_uio); 1730 out: 1731 PUFFS_MSG_RELEASE(readlink); 1732 return error; 1733 } 1734 1735 int 1736 puffs_vnop_rename(void *v) 1737 { 1738 struct vop_rename_args /* { 1739 const struct vnodeop_desc *a_desc; 1740 struct vnode *a_fdvp; 1741 struct vnode *a_fvp; 1742 struct componentname *a_fcnp; 1743 struct vnode *a_tdvp; 1744 struct vnode *a_tvp; 1745 struct componentname *a_tcnp; 1746 } */ *ap = v; 1747 PUFFS_MSG_VARS(vn, rename); 1748 struct vnode *fdvp = ap->a_fdvp, *fvp = ap->a_fvp; 1749 struct vnode *tdvp = ap->a_tdvp, *tvp = ap->a_tvp; 1750 struct puffs_node *fpn = ap->a_fvp->v_data; 1751 struct puffs_mount *pmp = MPTOPUFFSMP(fdvp->v_mount); 1752 int error; 1753 bool doabort = true; 1754 1755 if ((fvp->v_mount != tdvp->v_mount) || 1756 (tvp && (fvp->v_mount != tvp->v_mount))) { 1757 ERROUT(EXDEV); 1758 } 1759 1760 PUFFS_MSG_ALLOC(vn, rename); 1761 rename_msg->pvnr_cookie_src = VPTOPNC(fvp); 1762 rename_msg->pvnr_cookie_targdir = VPTOPNC(tdvp); 1763 if (tvp) 1764 rename_msg->pvnr_cookie_targ = VPTOPNC(tvp); 1765 else 1766 rename_msg->pvnr_cookie_targ = NULL; 1767 puffs_makecn(&rename_msg->pvnr_cn_src, &rename_msg->pvnr_cn_src_cred, 1768 ap->a_fcnp, PUFFS_USE_FULLPNBUF(pmp)); 1769 puffs_makecn(&rename_msg->pvnr_cn_targ, &rename_msg->pvnr_cn_targ_cred, 1770 ap->a_tcnp, PUFFS_USE_FULLPNBUF(pmp)); 1771 puffs_msg_setinfo(park_rename, PUFFSOP_VN, 1772 PUFFS_VN_RENAME, VPTOPNC(fdvp)); 1773 1774 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_rename, fdvp->v_data, NULL, error); 1775 doabort = false; 1776 PUFFS_MSG_RELEASE(rename); 1777 error = checkerr(pmp, error, __func__); 1778 1779 /* 1780 * XXX: stay in touch with the cache. I don't like this, but 1781 * don't have a better solution either. See also puffs_link(). 1782 */ 1783 if (error == 0) 1784 puffs_updatenode(fpn, PUFFS_UPDATECTIME, 0); 1785 1786 out: 1787 if (doabort) 1788 VOP_ABORTOP(tdvp, ap->a_tcnp); 1789 if (tvp != NULL) 1790 vput(tvp); 1791 if (tdvp == tvp) 1792 vrele(tdvp); 1793 else 1794 vput(tdvp); 1795 1796 if (doabort) 1797 VOP_ABORTOP(fdvp, ap->a_fcnp); 1798 vrele(fdvp); 1799 vrele(fvp); 1800 1801 return error; 1802 } 1803 1804 #define RWARGS(cont, iofl, move, offset, creds) \ 1805 (cont)->pvnr_ioflag = (iofl); \ 1806 (cont)->pvnr_resid = (move); \ 1807 (cont)->pvnr_offset = (offset); \ 1808 puffs_credcvt(&(cont)->pvnr_cred, creds) 1809 1810 int 1811 puffs_vnop_read(void *v) 1812 { 1813 struct vop_read_args /* { 1814 const struct vnodeop_desc *a_desc; 1815 struct vnode *a_vp; 1816 struct uio *a_uio; 1817 int a_ioflag; 1818 kauth_cred_t a_cred; 1819 } */ *ap = v; 1820 PUFFS_MSG_VARS(vn, read); 1821 struct vnode *vp = ap->a_vp; 1822 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 1823 struct uio *uio = ap->a_uio; 1824 size_t tomove, argsize; 1825 vsize_t bytelen; 1826 int error; 1827 1828 read_msg = NULL; 1829 error = 0; 1830 1831 /* std sanity */ 1832 if (uio->uio_resid == 0) 1833 return 0; 1834 if (uio->uio_offset < 0) 1835 return EINVAL; 1836 1837 if (vp->v_type == VREG && PUFFS_USE_PAGECACHE(pmp)) { 1838 const int advice = IO_ADV_DECODE(ap->a_ioflag); 1839 1840 while (uio->uio_resid > 0) { 1841 bytelen = MIN(uio->uio_resid, 1842 vp->v_size - uio->uio_offset); 1843 if (bytelen == 0) 1844 break; 1845 1846 error = ubc_uiomove(&vp->v_uobj, uio, bytelen, advice, 1847 UBC_READ | UBC_PARTIALOK | UBC_UNMAP_FLAG(vp)); 1848 if (error) 1849 break; 1850 } 1851 1852 if ((vp->v_mount->mnt_flag & MNT_NOATIME) == 0) 1853 puffs_updatenode(VPTOPP(vp), PUFFS_UPDATEATIME, 0); 1854 } else { 1855 /* 1856 * in case it's not a regular file or we're operating 1857 * uncached, do read in the old-fashioned style, 1858 * i.e. explicit read operations 1859 */ 1860 1861 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1862 argsize = sizeof(struct puffs_vnmsg_read); 1863 puffs_msgmem_alloc(argsize + tomove, &park_read, 1864 (void *)&read_msg, 1); 1865 1866 error = 0; 1867 while (uio->uio_resid > 0) { 1868 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 1869 memset(read_msg, 0, argsize); /* XXX: touser KASSERT */ 1870 RWARGS(read_msg, ap->a_ioflag, tomove, 1871 uio->uio_offset, ap->a_cred); 1872 puffs_msg_setinfo(park_read, PUFFSOP_VN, 1873 PUFFS_VN_READ, VPTOPNC(vp)); 1874 puffs_msg_setdelta(park_read, tomove); 1875 1876 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_read, vp->v_data, 1877 NULL, error); 1878 error = checkerr(pmp, error, __func__); 1879 if (error) 1880 break; 1881 1882 if (read_msg->pvnr_resid > tomove) { 1883 puffs_senderr(pmp, PUFFS_ERR_READ, 1884 E2BIG, "resid grew", VPTOPNC(ap->a_vp)); 1885 error = EPROTO; 1886 break; 1887 } 1888 1889 error = uiomove(read_msg->pvnr_data, 1890 tomove - read_msg->pvnr_resid, uio); 1891 1892 /* 1893 * in case the file is out of juice, resid from 1894 * userspace is != 0. and the error-case is 1895 * quite obvious 1896 */ 1897 if (error || read_msg->pvnr_resid) 1898 break; 1899 } 1900 1901 puffs_msgmem_release(park_read); 1902 } 1903 1904 return error; 1905 } 1906 1907 /* 1908 * XXX: in case of a failure, this leaves uio in a bad state. 1909 * We could theoretically copy the uio and iovecs and "replay" 1910 * them the right amount after the userspace trip, but don't 1911 * bother for now. 1912 */ 1913 int 1914 puffs_vnop_write(void *v) 1915 { 1916 struct vop_write_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 PUFFS_MSG_VARS(vn, write); 1924 struct vnode *vp = ap->a_vp; 1925 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 1926 struct uio *uio = ap->a_uio; 1927 size_t tomove, argsize; 1928 off_t oldoff, newoff, origoff; 1929 vsize_t bytelen; 1930 int error, uflags; 1931 int ubcflags; 1932 1933 error = uflags = 0; 1934 write_msg = NULL; 1935 1936 if (vp->v_type == VREG && PUFFS_USE_PAGECACHE(pmp)) { 1937 ubcflags = UBC_WRITE | UBC_PARTIALOK | UBC_UNMAP_FLAG(vp); 1938 1939 /* 1940 * userspace *should* be allowed to control this, 1941 * but with UBC it's a bit unclear how to handle it 1942 */ 1943 if (ap->a_ioflag & IO_APPEND) 1944 uio->uio_offset = vp->v_size; 1945 1946 origoff = uio->uio_offset; 1947 while (uio->uio_resid > 0) { 1948 uflags |= PUFFS_UPDATECTIME; 1949 uflags |= PUFFS_UPDATEMTIME; 1950 oldoff = uio->uio_offset; 1951 bytelen = uio->uio_resid; 1952 1953 newoff = oldoff + bytelen; 1954 if (vp->v_size < newoff) { 1955 uvm_vnp_setwritesize(vp, newoff); 1956 } 1957 error = ubc_uiomove(&vp->v_uobj, uio, bytelen, 1958 UVM_ADV_RANDOM, ubcflags); 1959 1960 /* 1961 * In case of a ubc_uiomove() error, 1962 * opt to not extend the file at all and 1963 * return an error. Otherwise, if we attempt 1964 * to clear the memory we couldn't fault to, 1965 * we might generate a kernel page fault. 1966 */ 1967 if (vp->v_size < newoff) { 1968 if (error == 0) { 1969 uflags |= PUFFS_UPDATESIZE; 1970 uvm_vnp_setsize(vp, newoff); 1971 } else { 1972 uvm_vnp_setwritesize(vp, vp->v_size); 1973 } 1974 } 1975 if (error) 1976 break; 1977 1978 /* 1979 * If we're writing large files, flush to file server 1980 * every 64k. Otherwise we can very easily exhaust 1981 * kernel and user memory, as the file server cannot 1982 * really keep up with our writing speed. 1983 * 1984 * Note: this does *NOT* honor MNT_ASYNC, because 1985 * that gives userland too much say in the kernel. 1986 */ 1987 if (oldoff >> 16 != uio->uio_offset >> 16) { 1988 mutex_enter(&vp->v_interlock); 1989 error = VOP_PUTPAGES(vp, oldoff & ~0xffff, 1990 uio->uio_offset & ~0xffff, 1991 PGO_CLEANIT | PGO_SYNCIO); 1992 if (error) 1993 break; 1994 } 1995 } 1996 1997 /* synchronous I/O? */ 1998 if (error == 0 && ap->a_ioflag & IO_SYNC) { 1999 mutex_enter(&vp->v_interlock); 2000 error = VOP_PUTPAGES(vp, trunc_page(origoff), 2001 round_page(uio->uio_offset), 2002 PGO_CLEANIT | PGO_SYNCIO); 2003 2004 /* write through page cache? */ 2005 } else if (error == 0 && pmp->pmp_flags & PUFFS_KFLAG_WTCACHE) { 2006 mutex_enter(&vp->v_interlock); 2007 error = VOP_PUTPAGES(vp, trunc_page(origoff), 2008 round_page(uio->uio_offset), PGO_CLEANIT); 2009 } 2010 2011 puffs_updatenode(VPTOPP(vp), uflags, vp->v_size); 2012 } else { 2013 /* tomove is non-increasing */ 2014 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 2015 argsize = sizeof(struct puffs_vnmsg_write) + tomove; 2016 puffs_msgmem_alloc(argsize, &park_write, (void *)&write_msg,1); 2017 2018 while (uio->uio_resid > 0) { 2019 /* move data to buffer */ 2020 tomove = PUFFS_TOMOVE(uio->uio_resid, pmp); 2021 memset(write_msg, 0, argsize); /* XXX: touser KASSERT */ 2022 RWARGS(write_msg, ap->a_ioflag, tomove, 2023 uio->uio_offset, ap->a_cred); 2024 error = uiomove(write_msg->pvnr_data, tomove, uio); 2025 if (error) 2026 break; 2027 2028 /* move buffer to userspace */ 2029 puffs_msg_setinfo(park_write, PUFFSOP_VN, 2030 PUFFS_VN_WRITE, VPTOPNC(vp)); 2031 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_write, vp->v_data, 2032 NULL, error); 2033 error = checkerr(pmp, error, __func__); 2034 if (error) 2035 break; 2036 2037 if (write_msg->pvnr_resid > tomove) { 2038 puffs_senderr(pmp, PUFFS_ERR_WRITE, 2039 E2BIG, "resid grew", VPTOPNC(ap->a_vp)); 2040 error = EPROTO; 2041 break; 2042 } 2043 2044 /* adjust file size */ 2045 if (vp->v_size < uio->uio_offset) 2046 uvm_vnp_setsize(vp, uio->uio_offset); 2047 2048 /* didn't move everything? bad userspace. bail */ 2049 if (write_msg->pvnr_resid != 0) { 2050 error = EIO; 2051 break; 2052 } 2053 } 2054 puffs_msgmem_release(park_write); 2055 } 2056 2057 return error; 2058 } 2059 2060 int 2061 puffs_vnop_print(void *v) 2062 { 2063 struct vop_print_args /* { 2064 struct vnode *a_vp; 2065 } */ *ap = v; 2066 PUFFS_MSG_VARS(vn, print); 2067 struct vnode *vp = ap->a_vp; 2068 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 2069 struct puffs_node *pn = vp->v_data; 2070 int error; 2071 2072 /* kernel portion */ 2073 printf("tag VT_PUFFS, vnode %p, puffs node: %p,\n" 2074 "\tuserspace cookie: %p", vp, pn, pn->pn_cookie); 2075 if (vp->v_type == VFIFO) 2076 VOCALL(fifo_vnodeop_p, VOFFSET(vop_print), v); 2077 printf("\n"); 2078 2079 /* userspace portion */ 2080 if (EXISTSOP(pmp, PRINT)) { 2081 PUFFS_MSG_ALLOC(vn, print); 2082 puffs_msg_setinfo(park_print, PUFFSOP_VN, 2083 PUFFS_VN_PRINT, VPTOPNC(vp)); 2084 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_print, vp->v_data, 2085 NULL, error); 2086 PUFFS_MSG_RELEASE(print); 2087 } 2088 2089 return 0; 2090 } 2091 2092 int 2093 puffs_vnop_pathconf(void *v) 2094 { 2095 struct vop_pathconf_args /* { 2096 const struct vnodeop_desc *a_desc; 2097 struct vnode *a_vp; 2098 int a_name; 2099 register_t *a_retval; 2100 } */ *ap = v; 2101 PUFFS_MSG_VARS(vn, pathconf); 2102 struct vnode *vp = ap->a_vp; 2103 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 2104 int error; 2105 2106 PUFFS_MSG_ALLOC(vn, pathconf); 2107 pathconf_msg->pvnr_name = ap->a_name; 2108 puffs_msg_setinfo(park_pathconf, PUFFSOP_VN, 2109 PUFFS_VN_PATHCONF, VPTOPNC(vp)); 2110 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_pathconf, vp->v_data, NULL, error); 2111 error = checkerr(pmp, error, __func__); 2112 if (!error) 2113 *ap->a_retval = pathconf_msg->pvnr_retval; 2114 PUFFS_MSG_RELEASE(pathconf); 2115 2116 return error; 2117 } 2118 2119 int 2120 puffs_vnop_advlock(void *v) 2121 { 2122 struct vop_advlock_args /* { 2123 const struct vnodeop_desc *a_desc; 2124 struct vnode *a_vp; 2125 void *a_id; 2126 int a_op; 2127 struct flock *a_fl; 2128 int a_flags; 2129 } */ *ap = v; 2130 PUFFS_MSG_VARS(vn, advlock); 2131 struct vnode *vp = ap->a_vp; 2132 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 2133 int error; 2134 2135 PUFFS_MSG_ALLOC(vn, advlock); 2136 error = copyin(ap->a_fl, &advlock_msg->pvnr_fl, sizeof(struct flock)); 2137 if (error) 2138 goto out; 2139 advlock_msg->pvnr_id = ap->a_id; 2140 advlock_msg->pvnr_op = ap->a_op; 2141 advlock_msg->pvnr_flags = ap->a_flags; 2142 puffs_msg_setinfo(park_advlock, PUFFSOP_VN, 2143 PUFFS_VN_ADVLOCK, VPTOPNC(vp)); 2144 2145 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_advlock, vp->v_data, NULL, error); 2146 error = checkerr(pmp, error, __func__); 2147 2148 out: 2149 PUFFS_MSG_RELEASE(advlock); 2150 return error; 2151 } 2152 2153 int 2154 puffs_vnop_abortop(void *v) 2155 { 2156 struct vop_abortop_args /* { 2157 struct vnode *a_dvp; 2158 struct componentname *a_cnp; 2159 }; */ *ap = v; 2160 PUFFS_MSG_VARS(vn, abortop); 2161 struct vnode *dvp = ap->a_dvp; 2162 struct puffs_mount *pmp = MPTOPUFFSMP(dvp->v_mount); 2163 struct componentname *cnp = ap->a_cnp; 2164 2165 if (EXISTSOP(pmp, ABORTOP)) { 2166 PUFFS_MSG_ALLOC(vn, abortop); 2167 puffs_makecn(&abortop_msg->pvnr_cn, &abortop_msg->pvnr_cn_cred, 2168 cnp, PUFFS_USE_FULLPNBUF(pmp)); 2169 puffs_msg_setfaf(park_abortop); 2170 puffs_msg_setinfo(park_abortop, PUFFSOP_VN, 2171 PUFFS_VN_ABORTOP, VPTOPNC(dvp)); 2172 2173 puffs_msg_enqueue(pmp, park_abortop); 2174 PUFFS_MSG_RELEASE(abortop); 2175 } 2176 2177 return genfs_abortop(v); 2178 } 2179 2180 #define BIOASYNC(bp) (bp->b_flags & B_ASYNC) 2181 2182 /* 2183 * This maps itself to PUFFS_VN_READ/WRITE for data transfer. 2184 */ 2185 int 2186 puffs_vnop_strategy(void *v) 2187 { 2188 struct vop_strategy_args /* { 2189 const struct vnodeop_desc *a_desc; 2190 struct vnode *a_vp; 2191 struct buf *a_bp; 2192 } */ *ap = v; 2193 PUFFS_MSG_VARS(vn, rw); 2194 struct vnode *vp = ap->a_vp; 2195 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 2196 struct puffs_node *pn; 2197 struct buf *bp; 2198 size_t argsize; 2199 size_t tomove, moved; 2200 int error, dofaf, dobiodone; 2201 2202 pmp = MPTOPUFFSMP(vp->v_mount); 2203 bp = ap->a_bp; 2204 error = 0; 2205 dofaf = 0; 2206 pn = VPTOPP(vp); 2207 park_rw = NULL; /* explicit */ 2208 dobiodone = 1; 2209 2210 if ((BUF_ISREAD(bp) && !EXISTSOP(pmp, READ)) 2211 || (BUF_ISWRITE(bp) && !EXISTSOP(pmp, WRITE))) 2212 ERROUT(EOPNOTSUPP); 2213 2214 /* 2215 * Short-circuit optimization: don't flush buffer in between 2216 * VOP_INACTIVE and VOP_RECLAIM in case the node has no references. 2217 */ 2218 if (pn->pn_stat & PNODE_DYING) { 2219 KASSERT(BUF_ISWRITE(bp)); 2220 bp->b_resid = 0; 2221 goto out; 2222 } 2223 2224 #ifdef DIAGNOSTIC 2225 if (bp->b_bcount > pmp->pmp_msg_maxsize - PUFFS_MSGSTRUCT_MAX) 2226 panic("puffs_strategy: wildly inappropriate buf bcount %d", 2227 bp->b_bcount); 2228 #endif 2229 2230 /* 2231 * See explanation for the necessity of a FAF in puffs_fsync. 2232 * 2233 * Also, do FAF in case we're suspending. 2234 * See puffs_vfsops.c:pageflush() 2235 */ 2236 if (BUF_ISWRITE(bp)) { 2237 mutex_enter(&vp->v_interlock); 2238 if (vp->v_iflag & VI_XLOCK) 2239 dofaf = 1; 2240 if (pn->pn_stat & PNODE_FAF) 2241 dofaf = 1; 2242 mutex_exit(&vp->v_interlock); 2243 } 2244 2245 #ifdef DIAGNOSTIC 2246 if (curlwp == uvm.pagedaemon_lwp) 2247 KASSERT(dofaf || BIOASYNC(bp)); 2248 #endif 2249 2250 /* allocate transport structure */ 2251 tomove = PUFFS_TOMOVE(bp->b_bcount, pmp); 2252 argsize = sizeof(struct puffs_vnmsg_rw); 2253 error = puffs_msgmem_alloc(argsize + tomove, &park_rw, 2254 (void *)&rw_msg, dofaf ? 0 : 1); 2255 if (error) 2256 goto out; 2257 RWARGS(rw_msg, 0, tomove, bp->b_blkno << DEV_BSHIFT, FSCRED); 2258 2259 /* 2x2 cases: read/write, faf/nofaf */ 2260 if (BUF_ISREAD(bp)) { 2261 puffs_msg_setinfo(park_rw, PUFFSOP_VN, 2262 PUFFS_VN_READ, VPTOPNC(vp)); 2263 puffs_msg_setdelta(park_rw, tomove); 2264 if (BIOASYNC(bp)) { 2265 puffs_msg_setcall(park_rw, 2266 puffs_parkdone_asyncbioread, bp); 2267 puffs_msg_enqueue(pmp, park_rw); 2268 dobiodone = 0; 2269 } else { 2270 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_rw, vp->v_data, 2271 NULL, error); 2272 error = checkerr(pmp, error, __func__); 2273 if (error) 2274 goto out; 2275 2276 if (rw_msg->pvnr_resid > tomove) { 2277 puffs_senderr(pmp, PUFFS_ERR_READ, 2278 E2BIG, "resid grew", VPTOPNC(vp)); 2279 ERROUT(EPROTO); 2280 } 2281 2282 moved = tomove - rw_msg->pvnr_resid; 2283 2284 (void)memcpy(bp->b_data, rw_msg->pvnr_data, moved); 2285 bp->b_resid = bp->b_bcount - moved; 2286 } 2287 } else { 2288 puffs_msg_setinfo(park_rw, PUFFSOP_VN, 2289 PUFFS_VN_WRITE, VPTOPNC(vp)); 2290 /* 2291 * make pages read-only before we write them if we want 2292 * write caching info 2293 */ 2294 if (PUFFS_WCACHEINFO(pmp)) { 2295 struct uvm_object *uobj = &vp->v_uobj; 2296 int npages = (bp->b_bcount + PAGE_SIZE-1) >> PAGE_SHIFT; 2297 struct vm_page *vmp; 2298 int i; 2299 2300 for (i = 0; i < npages; i++) { 2301 vmp= uvm_pageratop((vaddr_t)bp->b_data 2302 + (i << PAGE_SHIFT)); 2303 DPRINTF(("puffs_strategy: write-protecting " 2304 "vp %p page %p, offset %" PRId64"\n", 2305 vp, vmp, vmp->offset)); 2306 mutex_enter(&uobj->vmobjlock); 2307 vmp->flags |= PG_RDONLY; 2308 pmap_page_protect(vmp, VM_PROT_READ); 2309 mutex_exit(&uobj->vmobjlock); 2310 } 2311 } 2312 2313 (void)memcpy(&rw_msg->pvnr_data, bp->b_data, tomove); 2314 if (dofaf) { 2315 puffs_msg_setfaf(park_rw); 2316 } else if (BIOASYNC(bp)) { 2317 puffs_msg_setcall(park_rw, 2318 puffs_parkdone_asyncbiowrite, bp); 2319 dobiodone = 0; 2320 } 2321 2322 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_rw, vp->v_data, NULL, error); 2323 2324 if (dobiodone == 0) 2325 goto out; 2326 2327 /* 2328 * XXXXXXXX: wrong, but kernel can't survive strategy 2329 * failure currently. Here, have one more X: X. 2330 */ 2331 if (error != ENOMEM) 2332 error = 0; 2333 2334 error = checkerr(pmp, error, __func__); 2335 if (error) 2336 goto out; 2337 2338 if (rw_msg->pvnr_resid > tomove) { 2339 puffs_senderr(pmp, PUFFS_ERR_WRITE, 2340 E2BIG, "resid grew", VPTOPNC(vp)); 2341 ERROUT(EPROTO); 2342 } 2343 2344 /* 2345 * FAF moved everything. Frankly, we don't 2346 * really have a choice. 2347 */ 2348 if (dofaf && error == 0) 2349 moved = tomove; 2350 else 2351 moved = tomove - rw_msg->pvnr_resid; 2352 2353 bp->b_resid = bp->b_bcount - moved; 2354 if (bp->b_resid != 0) { 2355 ERROUT(EIO); 2356 } 2357 } 2358 2359 out: 2360 if (park_rw) 2361 puffs_msgmem_release(park_rw); 2362 2363 if (error) 2364 bp->b_error = error; 2365 2366 if (error || dobiodone) 2367 biodone(bp); 2368 2369 return error; 2370 } 2371 2372 int 2373 puffs_vnop_mmap(void *v) 2374 { 2375 struct vop_mmap_args /* { 2376 const struct vnodeop_desc *a_desc; 2377 struct vnode *a_vp; 2378 vm_prot_t a_prot; 2379 kauth_cred_t a_cred; 2380 } */ *ap = v; 2381 PUFFS_MSG_VARS(vn, mmap); 2382 struct vnode *vp = ap->a_vp; 2383 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 2384 int error; 2385 2386 if (!PUFFS_USE_PAGECACHE(pmp)) 2387 return genfs_eopnotsupp(v); 2388 2389 if (EXISTSOP(pmp, MMAP)) { 2390 PUFFS_MSG_ALLOC(vn, mmap); 2391 mmap_msg->pvnr_prot = ap->a_prot; 2392 puffs_credcvt(&mmap_msg->pvnr_cred, ap->a_cred); 2393 puffs_msg_setinfo(park_mmap, PUFFSOP_VN, 2394 PUFFS_VN_MMAP, VPTOPNC(vp)); 2395 2396 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_mmap, vp->v_data, NULL, error); 2397 error = checkerr(pmp, error, __func__); 2398 PUFFS_MSG_RELEASE(mmap); 2399 } else { 2400 error = genfs_mmap(v); 2401 } 2402 2403 return error; 2404 } 2405 2406 2407 /* 2408 * The rest don't get a free trip to userspace and back, they 2409 * have to stay within the kernel. 2410 */ 2411 2412 /* 2413 * bmap doesn't really make any sense for puffs, so just 1:1 map it. 2414 * well, maybe somehow, somewhere, some day .... 2415 */ 2416 int 2417 puffs_vnop_bmap(void *v) 2418 { 2419 struct vop_bmap_args /* { 2420 const struct vnodeop_desc *a_desc; 2421 struct vnode *a_vp; 2422 daddr_t a_bn; 2423 struct vnode **a_vpp; 2424 daddr_t *a_bnp; 2425 int *a_runp; 2426 } */ *ap = v; 2427 struct puffs_mount *pmp; 2428 2429 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 2430 2431 if (ap->a_vpp) 2432 *ap->a_vpp = ap->a_vp; 2433 if (ap->a_bnp) 2434 *ap->a_bnp = ap->a_bn; 2435 if (ap->a_runp) 2436 *ap->a_runp 2437 = (PUFFS_TOMOVE(pmp->pmp_msg_maxsize, pmp)>>DEV_BSHIFT) - 1; 2438 2439 return 0; 2440 } 2441 2442 /* 2443 * Handle getpages faults in puffs. We let genfs_getpages() do most 2444 * of the dirty work, but we come in this route to do accounting tasks. 2445 * If the user server has specified functions for cache notifications 2446 * about reads and/or writes, we record which type of operation we got, 2447 * for which page range, and proceed to issue a FAF notification to the 2448 * server about it. 2449 */ 2450 int 2451 puffs_vnop_getpages(void *v) 2452 { 2453 struct vop_getpages_args /* { 2454 const struct vnodeop_desc *a_desc; 2455 struct vnode *a_vp; 2456 voff_t a_offset; 2457 struct vm_page **a_m; 2458 int *a_count; 2459 int a_centeridx; 2460 vm_prot_t a_access_type; 2461 int a_advice; 2462 int a_flags; 2463 } */ *ap = v; 2464 struct puffs_mount *pmp; 2465 struct puffs_node *pn; 2466 struct vnode *vp; 2467 struct vm_page **pgs; 2468 struct puffs_cacheinfo *pcinfo = NULL; 2469 struct puffs_cacherun *pcrun; 2470 void *parkmem = NULL; 2471 size_t runsizes; 2472 int i, npages, si, streakon; 2473 int error, locked, write; 2474 2475 pmp = MPTOPUFFSMP(ap->a_vp->v_mount); 2476 npages = *ap->a_count; 2477 pgs = ap->a_m; 2478 vp = ap->a_vp; 2479 pn = vp->v_data; 2480 locked = (ap->a_flags & PGO_LOCKED) != 0; 2481 write = (ap->a_access_type & VM_PROT_WRITE) != 0; 2482 2483 /* ccg xnaht - gets Wuninitialized wrong */ 2484 pcrun = NULL; 2485 runsizes = 0; 2486 2487 /* 2488 * Check that we aren't trying to fault in pages which our file 2489 * server doesn't know about. This happens if we extend a file by 2490 * skipping some pages and later try to fault in pages which 2491 * are between pn_serversize and vp_size. This check optimizes 2492 * away the common case where a file is being extended. 2493 */ 2494 if (ap->a_offset >= pn->pn_serversize && ap->a_offset < vp->v_size) { 2495 struct vattr va; 2496 2497 /* try again later when we can block */ 2498 if (locked) 2499 ERROUT(EBUSY); 2500 2501 mutex_exit(&vp->v_interlock); 2502 vattr_null(&va); 2503 va.va_size = vp->v_size; 2504 error = dosetattr(vp, &va, FSCRED, 0); 2505 if (error) 2506 ERROUT(error); 2507 mutex_enter(&vp->v_interlock); 2508 } 2509 2510 if (write && PUFFS_WCACHEINFO(pmp)) { 2511 #ifdef notnowjohn 2512 /* allocate worst-case memory */ 2513 runsizes = ((npages / 2) + 1) * sizeof(struct puffs_cacherun); 2514 pcinfo = kmem_zalloc(sizeof(struct puffs_cacheinfo) + runsize, 2515 locked ? KM_NOSLEEP : KM_SLEEP); 2516 2517 /* 2518 * can't block if we're locked and can't mess up caching 2519 * information for fs server. so come back later, please 2520 */ 2521 if (pcinfo == NULL) 2522 ERROUT(ENOMEM); 2523 2524 parkmem = puffs_park_alloc(locked == 0); 2525 if (parkmem == NULL) 2526 ERROUT(ENOMEM); 2527 2528 pcrun = pcinfo->pcache_runs; 2529 #else 2530 (void)parkmem; 2531 #endif 2532 } 2533 2534 error = genfs_getpages(v); 2535 if (error) 2536 goto out; 2537 2538 if (PUFFS_WCACHEINFO(pmp) == 0) 2539 goto out; 2540 2541 /* 2542 * Let's see whose fault it was and inform the user server of 2543 * possibly read/written pages. Map pages from read faults 2544 * strictly read-only, since otherwise we might miss info on 2545 * when the page is actually write-faulted to. 2546 */ 2547 if (!locked) 2548 mutex_enter(&vp->v_uobj.vmobjlock); 2549 for (i = 0, si = 0, streakon = 0; i < npages; i++) { 2550 if (pgs[i] == NULL || pgs[i] == PGO_DONTCARE) { 2551 if (streakon && write) { 2552 streakon = 0; 2553 pcrun[si].pcache_runend 2554 = trunc_page(pgs[i]->offset) + PAGE_MASK; 2555 si++; 2556 } 2557 continue; 2558 } 2559 if (streakon == 0 && write) { 2560 streakon = 1; 2561 pcrun[si].pcache_runstart = pgs[i]->offset; 2562 } 2563 2564 if (!write) 2565 pgs[i]->flags |= PG_RDONLY; 2566 } 2567 /* was the last page part of our streak? */ 2568 if (streakon) { 2569 pcrun[si].pcache_runend 2570 = trunc_page(pgs[i-1]->offset) + PAGE_MASK; 2571 si++; 2572 } 2573 if (!locked) 2574 mutex_exit(&vp->v_uobj.vmobjlock); 2575 2576 KASSERT(si <= (npages / 2) + 1); 2577 2578 #ifdef notnowjohn 2579 /* send results to userspace */ 2580 if (write) 2581 puffs_cacheop(pmp, parkmem, pcinfo, 2582 sizeof(struct puffs_cacheinfo) + runsizes, VPTOPNC(vp)); 2583 #endif 2584 2585 out: 2586 if (error) { 2587 if (pcinfo != NULL) 2588 kmem_free(pcinfo, 2589 sizeof(struct puffs_cacheinfo) + runsizes); 2590 #ifdef notnowjohn 2591 if (parkmem != NULL) 2592 puffs_park_release(parkmem, 1); 2593 #endif 2594 } 2595 2596 return error; 2597 } 2598 2599 /* 2600 * Extended attribute support. 2601 */ 2602 2603 int 2604 puffs_vnop_getextattr(void *v) 2605 { 2606 struct vop_getextattr_args /* 2607 struct vnode *a_vp; 2608 int a_attrnamespace; 2609 const char *a_name; 2610 struct uio *a_uio; 2611 size_t *a_size; 2612 kauth_cred_t a_cred; 2613 }; */ *ap = v; 2614 PUFFS_MSG_VARS(vn, getextattr); 2615 struct vnode *vp = ap->a_vp; 2616 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 2617 int attrnamespace = ap->a_attrnamespace; 2618 const char *name = ap->a_name; 2619 struct uio *uio = ap->a_uio; 2620 size_t *sizep = ap->a_size; 2621 size_t tomove, resid; 2622 int error; 2623 2624 if (uio) 2625 resid = uio->uio_resid; 2626 else 2627 resid = 0; 2628 2629 tomove = PUFFS_TOMOVE(resid, pmp); 2630 if (tomove != resid) { 2631 error = E2BIG; 2632 goto out; 2633 } 2634 2635 puffs_msgmem_alloc(sizeof(struct puffs_vnmsg_getextattr) + tomove, 2636 &park_getextattr, (void *)&getextattr_msg, 1); 2637 2638 getextattr_msg->pvnr_attrnamespace = attrnamespace; 2639 strlcpy(getextattr_msg->pvnr_attrname, name, 2640 sizeof(getextattr_msg->pvnr_attrname)); 2641 puffs_credcvt(&getextattr_msg->pvnr_cred, ap->a_cred); 2642 if (sizep) 2643 getextattr_msg->pvnr_datasize = 1; 2644 getextattr_msg->pvnr_resid = tomove; 2645 2646 puffs_msg_setinfo(park_getextattr, 2647 PUFFSOP_VN, PUFFS_VN_GETEXTATTR, VPTOPNC(vp)); 2648 puffs_msg_setdelta(park_getextattr, tomove); 2649 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_getextattr, vp->v_data, NULL, error); 2650 2651 error = checkerr(pmp, error, __func__); 2652 if (error) 2653 goto out; 2654 2655 resid = getextattr_msg->pvnr_resid; 2656 if (resid > tomove) { 2657 puffs_senderr(pmp, PUFFS_ERR_GETEXTATTR, E2BIG, 2658 "resid grew", VPTOPNC(vp)); 2659 error = EPROTO; 2660 goto out; 2661 } 2662 2663 if (sizep) 2664 *sizep = getextattr_msg->pvnr_datasize; 2665 if (uio) 2666 error = uiomove(getextattr_msg->pvnr_data, tomove - resid, uio); 2667 2668 out: 2669 PUFFS_MSG_RELEASE(getextattr); 2670 return error; 2671 } 2672 2673 int 2674 puffs_vnop_setextattr(void *v) 2675 { 2676 struct vop_setextattr_args /* { 2677 struct vnode *a_vp; 2678 int a_attrnamespace; 2679 const char *a_name; 2680 struct uio *a_uio; 2681 kauth_cred_t a_cred; 2682 }; */ *ap = v; 2683 PUFFS_MSG_VARS(vn, setextattr); 2684 struct vnode *vp = ap->a_vp; 2685 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 2686 int attrnamespace = ap->a_attrnamespace; 2687 const char *name = ap->a_name; 2688 struct uio *uio = ap->a_uio; 2689 size_t tomove, resid; 2690 int error; 2691 2692 if (uio) 2693 resid = uio->uio_resid; 2694 else 2695 resid = 0; 2696 2697 tomove = PUFFS_TOMOVE(resid, pmp); 2698 if (tomove != resid) { 2699 error = E2BIG; 2700 goto out; 2701 } 2702 2703 puffs_msgmem_alloc(sizeof(struct puffs_vnmsg_setextattr) + tomove, 2704 &park_setextattr, (void *)&setextattr_msg, 1); 2705 2706 setextattr_msg->pvnr_attrnamespace = attrnamespace; 2707 strlcpy(setextattr_msg->pvnr_attrname, name, 2708 sizeof(setextattr_msg->pvnr_attrname)); 2709 puffs_credcvt(&setextattr_msg->pvnr_cred, ap->a_cred); 2710 setextattr_msg->pvnr_resid = tomove; 2711 2712 if (uio) { 2713 error = uiomove(setextattr_msg->pvnr_data, tomove, uio); 2714 if (error) 2715 goto out; 2716 } 2717 2718 puffs_msg_setinfo(park_setextattr, 2719 PUFFSOP_VN, PUFFS_VN_SETEXTATTR, VPTOPNC(vp)); 2720 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_setextattr, vp->v_data, NULL, error); 2721 2722 error = checkerr(pmp, error, __func__); 2723 if (error) 2724 goto out; 2725 2726 if (setextattr_msg->pvnr_resid != 0) 2727 error = EIO; 2728 2729 out: 2730 PUFFS_MSG_RELEASE(setextattr); 2731 2732 return error; 2733 } 2734 2735 int 2736 puffs_vnop_listextattr(void *v) 2737 { 2738 struct vop_listextattr_args /* { 2739 struct vnode *a_vp; 2740 int a_attrnamespace; 2741 struct uio *a_uio; 2742 size_t *a_size; 2743 kauth_cred_t a_cred; 2744 }; */ *ap = v; 2745 PUFFS_MSG_VARS(vn, listextattr); 2746 struct vnode *vp = ap->a_vp; 2747 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 2748 int attrnamespace = ap->a_attrnamespace; 2749 struct uio *uio = ap->a_uio; 2750 size_t *sizep = ap->a_size; 2751 size_t tomove, resid; 2752 int error; 2753 2754 if (uio) 2755 resid = uio->uio_resid; 2756 else 2757 resid = 0; 2758 2759 tomove = PUFFS_TOMOVE(resid, pmp); 2760 if (tomove != resid) { 2761 error = E2BIG; 2762 goto out; 2763 } 2764 2765 puffs_msgmem_alloc(sizeof(struct puffs_vnmsg_listextattr) + tomove, 2766 &park_listextattr, (void *)&listextattr_msg, 1); 2767 2768 listextattr_msg->pvnr_attrnamespace = attrnamespace; 2769 puffs_credcvt(&listextattr_msg->pvnr_cred, ap->a_cred); 2770 listextattr_msg->pvnr_resid = tomove; 2771 if (sizep) 2772 listextattr_msg->pvnr_datasize = 1; 2773 2774 puffs_msg_setinfo(park_listextattr, 2775 PUFFSOP_VN, PUFFS_VN_LISTEXTATTR, VPTOPNC(vp)); 2776 puffs_msg_setdelta(park_listextattr, tomove); 2777 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_listextattr, vp->v_data, NULL, error); 2778 2779 error = checkerr(pmp, error, __func__); 2780 if (error) 2781 goto out; 2782 2783 resid = listextattr_msg->pvnr_resid; 2784 if (resid > tomove) { 2785 puffs_senderr(pmp, PUFFS_ERR_LISTEXTATTR, E2BIG, 2786 "resid grew", VPTOPNC(vp)); 2787 error = EPROTO; 2788 goto out; 2789 } 2790 2791 if (sizep) 2792 *sizep = listextattr_msg->pvnr_datasize; 2793 if (uio) 2794 error = uiomove(listextattr_msg->pvnr_data, tomove-resid, uio); 2795 2796 out: 2797 PUFFS_MSG_RELEASE(listextattr); 2798 return error; 2799 } 2800 2801 int 2802 puffs_vnop_deleteextattr(void *v) 2803 { 2804 struct vop_deleteextattr_args /* { 2805 struct vnode *a_vp; 2806 int a_attrnamespace; 2807 const char *a_name; 2808 kauth_cred_t a_cred; 2809 }; */ *ap = v; 2810 PUFFS_MSG_VARS(vn, deleteextattr); 2811 struct vnode *vp = ap->a_vp; 2812 struct puffs_mount *pmp = MPTOPUFFSMP(vp->v_mount); 2813 int attrnamespace = ap->a_attrnamespace; 2814 const char *name = ap->a_name; 2815 int error; 2816 2817 PUFFS_MSG_ALLOC(vn, deleteextattr); 2818 deleteextattr_msg->pvnr_attrnamespace = attrnamespace; 2819 strlcpy(deleteextattr_msg->pvnr_attrname, name, 2820 sizeof(deleteextattr_msg->pvnr_attrname)); 2821 puffs_credcvt(&deleteextattr_msg->pvnr_cred, ap->a_cred); 2822 2823 puffs_msg_setinfo(park_deleteextattr, 2824 PUFFSOP_VN, PUFFS_VN_DELETEEXTATTR, VPTOPNC(vp)); 2825 PUFFS_MSG_ENQUEUEWAIT2(pmp, park_deleteextattr, 2826 vp->v_data, NULL, error); 2827 2828 error = checkerr(pmp, error, __func__); 2829 2830 PUFFS_MSG_RELEASE(deleteextattr); 2831 return error; 2832 } 2833 2834 /* 2835 * spec & fifo. These call the miscfs spec and fifo vectors, but issue 2836 * FAF update information for the puffs node first. 2837 */ 2838 int 2839 puffs_vnop_spec_read(void *v) 2840 { 2841 struct vop_read_args /* { 2842 const struct vnodeop_desc *a_desc; 2843 struct vnode *a_vp; 2844 struct uio *a_uio; 2845 int a_ioflag; 2846 kauth_cred_t a_cred; 2847 } */ *ap = v; 2848 2849 puffs_updatenode(VPTOPP(ap->a_vp), PUFFS_UPDATEATIME, 0); 2850 return VOCALL(spec_vnodeop_p, VOFFSET(vop_read), v); 2851 } 2852 2853 int 2854 puffs_vnop_spec_write(void *v) 2855 { 2856 struct vop_write_args /* { 2857 const struct vnodeop_desc *a_desc; 2858 struct vnode *a_vp; 2859 struct uio *a_uio; 2860 int a_ioflag; 2861 kauth_cred_t a_cred; 2862 } */ *ap = v; 2863 2864 puffs_updatenode(VPTOPP(ap->a_vp), PUFFS_UPDATEMTIME, 0); 2865 return VOCALL(spec_vnodeop_p, VOFFSET(vop_write), v); 2866 } 2867 2868 int 2869 puffs_vnop_fifo_read(void *v) 2870 { 2871 struct vop_read_args /* { 2872 const struct vnodeop_desc *a_desc; 2873 struct vnode *a_vp; 2874 struct uio *a_uio; 2875 int a_ioflag; 2876 kauth_cred_t a_cred; 2877 } */ *ap = v; 2878 2879 puffs_updatenode(VPTOPP(ap->a_vp), PUFFS_UPDATEATIME, 0); 2880 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_read), v); 2881 } 2882 2883 int 2884 puffs_vnop_fifo_write(void *v) 2885 { 2886 struct vop_write_args /* { 2887 const struct vnodeop_desc *a_desc; 2888 struct vnode *a_vp; 2889 struct uio *a_uio; 2890 int a_ioflag; 2891 kauth_cred_t a_cred; 2892 } */ *ap = v; 2893 2894 puffs_updatenode(VPTOPP(ap->a_vp), PUFFS_UPDATEMTIME, 0); 2895 return VOCALL(fifo_vnodeop_p, VOFFSET(vop_write), v); 2896 } 2897
Indexes created Tue Sep 30 11:09:46 GMT 2025