1 /* 2 * Copyright (c) 2000-2001 Boris Popov 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Boris Popov. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: src/sys/fs/smbfs/smbfs_vnops.c,v 1.2.2.8 2003/04/04 08:57:23 tjr Exp $ 33 * $DragonFly: src/sys/vfs/smbfs/smbfs_vnops.c,v 1.41 2007/11/20 21:03:50 dillon Exp $ 34 */ 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/proc.h> 39 #include <sys/priv.h> 40 #include <sys/namei.h> 41 #include <sys/fcntl.h> 42 #include <sys/mount.h> 43 #include <sys/unistd.h> 44 #include <sys/vnode.h> 45 #include <sys/lockf.h> 46 47 #include <vm/vm.h> 48 #include <vm/vm_extern.h> 49 #include <vm/vm_zone.h> 50 51 52 #include <netproto/smb/smb.h> 53 #include <netproto/smb/smb_conn.h> 54 #include <netproto/smb/smb_subr.h> 55 56 #include "smbfs.h" 57 #include "smbfs_node.h" 58 #include "smbfs_subr.h" 59 60 #include <sys/buf.h> 61 62 /* 63 * Prototypes for SMBFS vnode operations 64 */ 65 static int smbfs_create(struct vop_old_create_args *); 66 static int smbfs_mknod(struct vop_old_mknod_args *); 67 static int smbfs_open(struct vop_open_args *); 68 static int smbfs_closel(struct vop_close_args *); 69 static int smbfs_access(struct vop_access_args *); 70 static int smbfs_getattr(struct vop_getattr_args *); 71 static int smbfs_setattr(struct vop_setattr_args *); 72 static int smbfs_read(struct vop_read_args *); 73 static int smbfs_write(struct vop_write_args *); 74 static int smbfs_fsync(struct vop_fsync_args *); 75 static int smbfs_remove(struct vop_old_remove_args *); 76 static int smbfs_link(struct vop_old_link_args *); 77 static int smbfs_lookup(struct vop_old_lookup_args *); 78 static int smbfs_rename(struct vop_old_rename_args *); 79 static int smbfs_mkdir(struct vop_old_mkdir_args *); 80 static int smbfs_rmdir(struct vop_old_rmdir_args *); 81 static int smbfs_symlink(struct vop_old_symlink_args *); 82 static int smbfs_readdir(struct vop_readdir_args *); 83 static int smbfs_bmap(struct vop_bmap_args *); 84 static int smbfs_strategy(struct vop_strategy_args *); 85 static int smbfs_print(struct vop_print_args *); 86 static int smbfs_pathconf(struct vop_pathconf_args *ap); 87 static int smbfs_advlock(struct vop_advlock_args *); 88 static int smbfs_getextattr(struct vop_getextattr_args *ap); 89 90 struct vop_ops smbfs_vnode_vops = { 91 .vop_default = vop_defaultop, 92 .vop_access = smbfs_access, 93 .vop_advlock = smbfs_advlock, 94 .vop_bmap = smbfs_bmap, 95 .vop_close = smbfs_closel, 96 .vop_old_create = smbfs_create, 97 .vop_fsync = smbfs_fsync, 98 .vop_getattr = smbfs_getattr, 99 .vop_getpages = smbfs_getpages, 100 .vop_inactive = smbfs_inactive, 101 .vop_ioctl = smbfs_ioctl, 102 .vop_old_link = smbfs_link, 103 .vop_old_lookup = smbfs_lookup, 104 .vop_old_mkdir = smbfs_mkdir, 105 .vop_old_mknod = smbfs_mknod, 106 .vop_open = smbfs_open, 107 .vop_pathconf = smbfs_pathconf, 108 .vop_print = smbfs_print, 109 .vop_putpages = smbfs_putpages, 110 .vop_read = smbfs_read, 111 .vop_readdir = smbfs_readdir, 112 .vop_reclaim = smbfs_reclaim, 113 .vop_old_remove = smbfs_remove, 114 .vop_old_rename = smbfs_rename, 115 .vop_old_rmdir = smbfs_rmdir, 116 .vop_setattr = smbfs_setattr, 117 .vop_strategy = smbfs_strategy, 118 .vop_old_symlink = smbfs_symlink, 119 .vop_write = smbfs_write, 120 .vop_getextattr = smbfs_getextattr 121 /* .vop_setextattr = smbfs_setextattr */ 122 }; 123 124 /* 125 * smbfs_access(struct vnode *a_vp, int a_mode, struct ucred *a_cred) 126 */ 127 static int 128 smbfs_access(struct vop_access_args *ap) 129 { 130 struct vnode *vp = ap->a_vp; 131 struct smbmount *smp = VTOSMBFS(vp); 132 int mode; 133 int error; 134 135 SMBVDEBUG("\n"); 136 mode = ((vp->v_type == VREG) ? 137 smp->sm_args.file_mode : smp->sm_args.dir_mode); 138 error = vop_helper_access(ap, smp->sm_args.uid, smp->sm_args.gid, 139 mode, 0); 140 return (error); 141 } 142 143 /* 144 * smbfs_open(struct vnode *a_vp, int a_mode, struct ucred *a_cred, 145 * struct file *a_fp) 146 */ 147 /* ARGSUSED */ 148 static int 149 smbfs_open(struct vop_open_args *ap) 150 { 151 struct vnode *vp = ap->a_vp; 152 struct smbnode *np = VTOSMB(vp); 153 struct smb_cred scred; 154 struct vattr vattr; 155 int mode = ap->a_mode; 156 int error, accmode; 157 158 SMBVDEBUG("%s,%d\n", np->n_name, np->n_opencount); 159 if (vp->v_type != VREG && vp->v_type != VDIR) { 160 SMBFSERR("open eacces vtype=%d\n", vp->v_type); 161 return EACCES; 162 } 163 if (vp->v_type == VDIR) { 164 if (np->n_opencount == 0) 165 np->n_cached_cred = crhold(ap->a_cred); 166 np->n_opencount++; 167 return (vop_stdopen(ap)); 168 } 169 if (np->n_flag & NMODIFIED) { 170 if ((error = smbfs_vinvalbuf(vp, V_SAVE, 1)) == EINTR) 171 return error; 172 smbfs_attr_cacheremove(vp); 173 error = VOP_GETATTR(vp, &vattr); 174 if (error) 175 return error; 176 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 177 } else { 178 error = VOP_GETATTR(vp, &vattr); 179 if (error) 180 return error; 181 if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { 182 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 183 if (error == EINTR) 184 return error; 185 np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; 186 } 187 } 188 if (np->n_opencount) { 189 np->n_opencount++; 190 return (vop_stdopen(ap)); 191 } 192 accmode = SMB_AM_OPENREAD; 193 if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) 194 accmode = SMB_AM_OPENRW; 195 smb_makescred(&scred, curthread, ap->a_cred); 196 error = smbfs_smb_open(np, accmode, &scred); 197 if (error) { 198 if (mode & FWRITE) 199 return EACCES; 200 accmode = SMB_AM_OPENREAD; 201 error = smbfs_smb_open(np, accmode, &scred); 202 } 203 if (!error) { 204 np->n_cached_cred = crhold(ap->a_cred); 205 np->n_opencount++; 206 } 207 smbfs_attr_cacheremove(vp); 208 if (error == 0) 209 vop_stdopen(ap); 210 return error; 211 } 212 213 static int 214 smbfs_closel(struct vop_close_args *ap) 215 { 216 struct vnode *vp = ap->a_vp; 217 struct smbnode *np = VTOSMB(vp); 218 struct smb_cred scred; 219 struct vattr vattr; 220 int error; 221 222 SMBVDEBUG("name=%s, pid=%d, c=%d\n",np->n_name, p->p_pid, np->n_opencount); 223 224 smb_makescred(&scred, curthread, proc0.p_ucred); 225 error = 0; 226 227 if (np->n_opencount == 0) { 228 if (vp->v_type != VDIR) 229 SMBERROR("Negative opencount\n"); 230 goto done; 231 } 232 np->n_opencount--; 233 if (vp->v_type == VDIR) { 234 if (np->n_opencount) 235 goto done; 236 if (np->n_dirseq) { 237 smbfs_findclose(np->n_dirseq, &scred); 238 np->n_dirseq = NULL; 239 } 240 } else { 241 error = smbfs_vinvalbuf(vp, V_SAVE, 1); 242 if (np->n_opencount) 243 goto done; 244 VOP_GETATTR(vp, &vattr); 245 error = smbfs_smb_close(np->n_mount->sm_share, np->n_fid, 246 &np->n_mtime, &scred); 247 } 248 crfree(np->n_cached_cred); 249 np->n_cached_cred = NULL; 250 smbfs_attr_cacheremove(vp); 251 done: 252 vop_stdclose(ap); 253 return error; 254 } 255 256 /* 257 * smbfs_getattr call from vfs. 258 * 259 * smbfs_getattr(struct vnode *a_vp, struct vattr *a_vap) 260 */ 261 static int 262 smbfs_getattr(struct vop_getattr_args *ap) 263 { 264 struct vnode *vp = ap->a_vp; 265 struct smbnode *np = VTOSMB(vp); 266 struct vattr *va=ap->a_vap; 267 struct smbfattr fattr; 268 struct smb_cred scred; 269 u_quad_t oldsize; 270 int error; 271 272 SMBVDEBUG("%lx: '%s' %d\n", (long)vp, np->n_name, (vp->v_flag & VROOT) != 0); 273 error = smbfs_attr_cachelookup(vp, va); 274 if (!error) 275 return 0; 276 SMBVDEBUG("not in the cache\n"); 277 smb_makescred(&scred, curthread, proc0.p_ucred); 278 oldsize = np->n_size; 279 error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); 280 if (error) { 281 SMBVDEBUG("error %d\n", error); 282 return error; 283 } 284 smbfs_attr_cacheenter(vp, &fattr); 285 smbfs_attr_cachelookup(vp, va); 286 if (np->n_opencount) 287 np->n_size = oldsize; 288 return 0; 289 } 290 291 /* 292 * smbfs_setattr(struct vnode *a_vp, struct vattr *a_vap, struct ucred *a_cred) 293 */ 294 static int 295 smbfs_setattr(struct vop_setattr_args *ap) 296 { 297 struct vnode *vp = ap->a_vp; 298 struct smbnode *np = VTOSMB(vp); 299 struct vattr *vap = ap->a_vap; 300 struct timespec *mtime, *atime; 301 struct smb_cred scred; 302 struct smb_share *ssp = np->n_mount->sm_share; 303 struct smb_vc *vcp = SSTOVC(ssp); 304 u_quad_t tsize = 0; 305 int isreadonly, doclose, error = 0; 306 307 SMBVDEBUG("\n"); 308 if (vap->va_flags != VNOVAL) 309 return EOPNOTSUPP; 310 isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); 311 /* 312 * Disallow write attempts if the filesystem is mounted read-only. 313 */ 314 if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || 315 vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || 316 vap->va_mode != (mode_t)VNOVAL) && isreadonly) 317 return EROFS; 318 smb_makescred(&scred, curthread, ap->a_cred); 319 if (vap->va_size != VNOVAL) { 320 switch (vp->v_type) { 321 case VDIR: 322 return EISDIR; 323 case VREG: 324 break; 325 default: 326 return EINVAL; 327 }; 328 if (isreadonly) 329 return EROFS; 330 doclose = 0; 331 vnode_pager_setsize(vp, (u_long)vap->va_size); 332 tsize = np->n_size; 333 np->n_size = vap->va_size; 334 if (np->n_opencount == 0) { 335 error = smbfs_smb_open(np, SMB_AM_OPENRW, &scred); 336 if (error == 0) 337 doclose = 1; 338 } 339 if (error == 0) 340 error = smbfs_smb_setfsize(np, vap->va_size, &scred); 341 if (doclose) 342 smbfs_smb_close(ssp, np->n_fid, NULL, &scred); 343 if (error) { 344 np->n_size = tsize; 345 vnode_pager_setsize(vp, (u_long)tsize); 346 return error; 347 } 348 } 349 mtime = atime = NULL; 350 if (vap->va_mtime.tv_sec != VNOVAL) 351 mtime = &vap->va_mtime; 352 if (vap->va_atime.tv_sec != VNOVAL) 353 atime = &vap->va_atime; 354 if (mtime != atime) { 355 if (ap->a_cred->cr_uid != VTOSMBFS(vp)->sm_args.uid && 356 (error = priv_check_cred(ap->a_cred, PRIV_VFS_SETATTR, 0)) && 357 ((vap->va_vaflags & VA_UTIMES_NULL) == 0 || 358 (error = VOP_EACCESS(vp, VWRITE, ap->a_cred)))) 359 return (error); 360 #if 0 361 if (mtime == NULL) 362 mtime = &np->n_mtime; 363 if (atime == NULL) 364 atime = &np->n_atime; 365 #endif 366 /* 367 * If file is opened, then we can use handle based calls. 368 * If not, use path based ones. 369 */ 370 if (np->n_opencount == 0) { 371 if (vcp->vc_flags & SMBV_WIN95) { 372 error = VOP_OPEN(vp, FWRITE, ap->a_cred, NULL); 373 if (!error) { 374 /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 375 VOP_GETATTR(vp, &vattr);*/ 376 if (mtime) 377 np->n_mtime = *mtime; 378 VOP_CLOSE(vp, FWRITE); 379 } 380 } else if ((vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS)) { 381 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 382 /* error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred);*/ 383 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { 384 error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); 385 } else { 386 error = smbfs_smb_setpattr(np, 0, mtime, &scred); 387 } 388 } else { 389 if (vcp->vc_sopt.sv_caps & SMB_CAP_NT_SMBS) { 390 error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); 391 } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { 392 error = smbfs_smb_setftime(np, mtime, atime, &scred); 393 } else { 394 /* 395 * I have no idea how to handle this for core 396 * level servers. The possible solution is to 397 * update mtime after file is closed. 398 */ 399 SMBERROR("can't update times on an opened file\n"); 400 } 401 } 402 } 403 /* 404 * Invalidate attribute cache in case if server doesn't set 405 * required attributes. 406 */ 407 smbfs_attr_cacheremove(vp); /* invalidate cache */ 408 VOP_GETATTR(vp, vap); 409 np->n_mtime.tv_sec = vap->va_mtime.tv_sec; 410 return error; 411 } 412 /* 413 * smbfs_read call. 414 * 415 * smbfs_read(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 416 * struct ucred *a_cred) 417 */ 418 static int 419 smbfs_read(struct vop_read_args *ap) 420 { 421 struct vnode *vp = ap->a_vp; 422 struct uio *uio = ap->a_uio; 423 424 SMBVDEBUG("\n"); 425 if (vp->v_type != VREG && vp->v_type != VDIR) 426 return EPERM; 427 return smbfs_readvnode(vp, uio, ap->a_cred); 428 } 429 430 /* 431 * smbfs_write(struct vnode *a_vp, struct uio *a_uio, int a_ioflag, 432 * struct ucred *a_cred) 433 */ 434 static int 435 smbfs_write(struct vop_write_args *ap) 436 { 437 struct vnode *vp = ap->a_vp; 438 struct uio *uio = ap->a_uio; 439 440 SMBVDEBUG("%d,ofs=%d,sz=%d\n",vp->v_type, (int)uio->uio_offset, uio->uio_resid); 441 if (vp->v_type != VREG) 442 return (EPERM); 443 return smbfs_writevnode(vp, uio, ap->a_cred,ap->a_ioflag); 444 } 445 /* 446 * smbfs_create call 447 * Create a regular file. On entry the directory to contain the file being 448 * created is locked. We must release before we return. 449 * 450 * smbfs_create(struct vnode *a_dvp, struct vnode **a_vpp, 451 * struct componentname *a_cnp, struct vattr *a_vap) 452 */ 453 static int 454 smbfs_create(struct vop_old_create_args *ap) 455 { 456 struct vnode *dvp = ap->a_dvp; 457 struct vattr *vap = ap->a_vap; 458 struct vnode **vpp=ap->a_vpp; 459 struct componentname *cnp = ap->a_cnp; 460 struct smbnode *dnp = VTOSMB(dvp); 461 struct vnode *vp; 462 struct vattr vattr; 463 struct smbfattr fattr; 464 struct smb_cred scred; 465 char *name = cnp->cn_nameptr; 466 int nmlen = cnp->cn_namelen; 467 int error; 468 469 470 SMBVDEBUG("\n"); 471 *vpp = NULL; 472 if (vap->va_type != VREG) 473 return EOPNOTSUPP; 474 if ((error = VOP_GETATTR(dvp, &vattr))) 475 return error; 476 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 477 478 error = smbfs_smb_create(dnp, name, nmlen, &scred); 479 if (error) 480 return error; 481 error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); 482 if (error) 483 return error; 484 error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, &vp); 485 if (error) 486 return error; 487 *vpp = vp; 488 return error; 489 } 490 491 /* 492 * smbfs_remove(struct vnode *a_dvp, struct vnode *a_vp, 493 * struct componentname *a_cnp) 494 */ 495 static int 496 smbfs_remove(struct vop_old_remove_args *ap) 497 { 498 struct vnode *vp = ap->a_vp; 499 /* struct vnode *dvp = ap->a_dvp;*/ 500 struct componentname *cnp = ap->a_cnp; 501 struct smbnode *np = VTOSMB(vp); 502 struct smb_cred scred; 503 int error; 504 505 if (vp->v_type == VDIR || np->n_opencount || vp->v_sysref.refcnt > 1) 506 return EPERM; 507 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 508 error = smbfs_smb_delete(np, &scred); 509 return error; 510 } 511 512 /* 513 * smbfs_file rename call 514 * 515 * smbfs_rename(struct vnode *a_fdvp, struct vnode *a_fvp, 516 * struct componentname *a_fcnp, struct vnode *a_tdvp, 517 * struct vnode *a_tvp, struct componentname *a_tcnp) 518 */ 519 static int 520 smbfs_rename(struct vop_old_rename_args *ap) 521 { 522 struct vnode *fvp = ap->a_fvp; 523 struct vnode *tvp = ap->a_tvp; 524 struct vnode *fdvp = ap->a_fdvp; 525 struct vnode *tdvp = ap->a_tdvp; 526 struct componentname *tcnp = ap->a_tcnp; 527 /* struct componentname *fcnp = ap->a_fcnp;*/ 528 struct smb_cred scred; 529 u_int16_t flags = 6; 530 int error=0; 531 532 /* Check for cross-device rename */ 533 if ((fvp->v_mount != tdvp->v_mount) || 534 (tvp && (fvp->v_mount != tvp->v_mount))) { 535 error = EXDEV; 536 goto out; 537 } 538 539 if (tvp && tvp->v_sysref.refcnt > 1) { 540 error = EBUSY; 541 goto out; 542 } 543 flags = 0x10; /* verify all writes */ 544 if (fvp->v_type == VDIR) { 545 flags |= 2; 546 } else if (fvp->v_type == VREG) { 547 flags |= 1; 548 } else { 549 error = EINVAL; 550 goto out; 551 } 552 smb_makescred(&scred, tcnp->cn_td, tcnp->cn_cred); 553 /* 554 * It seems that Samba doesn't implement SMB_COM_MOVE call... 555 */ 556 #ifdef notnow 557 if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { 558 error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), 559 tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); 560 } else 561 #endif 562 { 563 /* 564 * We have to do the work atomicaly 565 */ 566 if (tvp && tvp != fvp) { 567 error = smbfs_smb_delete(VTOSMB(tvp), &scred); 568 if (error) 569 goto out_cacherem; 570 } 571 error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), 572 tcnp->cn_nameptr, tcnp->cn_namelen, &scred); 573 } 574 575 out_cacherem: 576 smbfs_attr_cacheremove(fdvp); 577 smbfs_attr_cacheremove(tdvp); 578 out: 579 if (tdvp == tvp) 580 vrele(tdvp); 581 else 582 vput(tdvp); 583 if (tvp) 584 vput(tvp); 585 vrele(fdvp); 586 vrele(fvp); 587 #ifdef possible_mistake 588 #error x 589 vgone_vxlocked(fvp); 590 if (tvp) 591 vgone_vxlocked(tvp); 592 #endif 593 return error; 594 } 595 596 /* 597 * somtime it will come true... 598 * 599 * smbfs_link(struct vnode *a_tdvp, struct vnode *a_vp, 600 * struct componentname *a_cnp) 601 */ 602 static int 603 smbfs_link(struct vop_old_link_args *ap) 604 { 605 return EOPNOTSUPP; 606 } 607 608 /* 609 * smbfs_symlink link create call. 610 * Sometime it will be functional... 611 * 612 * smbfs_symlink(struct vnode *a_dvp, struct vnode **a_vpp, 613 * struct componentname *a_cnp, struct vattr *a_vap, 614 * char *a_target) 615 */ 616 static int 617 smbfs_symlink(struct vop_old_symlink_args *ap) 618 { 619 return EOPNOTSUPP; 620 } 621 622 static int 623 smbfs_mknod(struct vop_old_mknod_args *ap) 624 { 625 return EOPNOTSUPP; 626 } 627 628 /* 629 * smbfs_mkdir(struct vnode *a_dvp, struct vnode **a_vpp, 630 * struct componentname *a_cnp, struct vattr *a_vap) 631 */ 632 static int 633 smbfs_mkdir(struct vop_old_mkdir_args *ap) 634 { 635 struct vnode *dvp = ap->a_dvp; 636 /* struct vattr *vap = ap->a_vap;*/ 637 struct vnode *vp; 638 struct componentname *cnp = ap->a_cnp; 639 struct smbnode *dnp = VTOSMB(dvp); 640 struct vattr vattr; 641 struct smb_cred scred; 642 struct smbfattr fattr; 643 char *name = cnp->cn_nameptr; 644 int len = cnp->cn_namelen; 645 int error; 646 647 if ((error = VOP_GETATTR(dvp, &vattr))) { 648 return error; 649 } 650 if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))) 651 return EEXIST; 652 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 653 error = smbfs_smb_mkdir(dnp, name, len, &scred); 654 if (error) 655 return error; 656 error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); 657 if (error) 658 return error; 659 error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); 660 if (error) 661 return error; 662 *ap->a_vpp = vp; 663 return 0; 664 } 665 666 /* 667 * smbfs_remove directory call 668 * 669 * smbfs_rmdir(struct vnode *a_dvp, struct vnode *a_vp, 670 * struct componentname *a_cnp) 671 */ 672 static int 673 smbfs_rmdir(struct vop_old_rmdir_args *ap) 674 { 675 struct vnode *vp = ap->a_vp; 676 struct vnode *dvp = ap->a_dvp; 677 struct componentname *cnp = ap->a_cnp; 678 /* struct smbmount *smp = VTOSMBFS(vp);*/ 679 struct smbnode *dnp = VTOSMB(dvp); 680 struct smbnode *np = VTOSMB(vp); 681 struct smb_cred scred; 682 int error; 683 684 if (dvp == vp) 685 return EINVAL; 686 687 smb_makescred(&scred, cnp->cn_td, cnp->cn_cred); 688 error = smbfs_smb_rmdir(np, &scred); 689 dnp->n_flag |= NMODIFIED; 690 smbfs_attr_cacheremove(dvp); 691 return error; 692 } 693 694 /* 695 * smbfs_readdir call 696 * 697 * smbfs_readdir(struct vnode *a_vp, struct uio *a_uio, struct ucred *a_cred, 698 * int *a_eofflag, off_t *a_cookies, int a_ncookies) 699 */ 700 static int 701 smbfs_readdir(struct vop_readdir_args *ap) 702 { 703 struct vnode *vp = ap->a_vp; 704 struct uio *uio = ap->a_uio; 705 int error; 706 707 if (vp->v_type != VDIR) 708 return (EPERM); 709 #ifdef notnow 710 if (ap->a_ncookies) { 711 kprintf("smbfs_readdir: no support for cookies now..."); 712 return (EOPNOTSUPP); 713 } 714 #endif 715 if ((error = vn_lock(vp, LK_EXCLUSIVE | LK_RETRY)) == 0) { 716 error = smbfs_readvnode(vp, uio, ap->a_cred); 717 vn_unlock(vp); 718 } 719 return error; 720 } 721 722 /* 723 * smbfs_fsync(struct vnode *a_vp, int a_waitfor) 724 */ 725 /* ARGSUSED */ 726 static int 727 smbfs_fsync(struct vop_fsync_args *ap) 728 { 729 /* return (smb_flush(ap->a_vp, ap->a_waitfor, curthread, 1));*/ 730 return (0); 731 } 732 733 /* 734 * smbfs_print(struct vnode *a_vp) 735 */ 736 static int 737 smbfs_print(struct vop_print_args *ap) 738 { 739 struct vnode *vp = ap->a_vp; 740 struct smbnode *np = VTOSMB(vp); 741 742 if (np == NULL) { 743 kprintf("no smbnode data\n"); 744 return (0); 745 } 746 kprintf("tag VT_SMBFS, name = %s, parent = %p, opencount = %d", 747 np->n_name, np->n_parent ? np->n_parent : NULL, 748 np->n_opencount); 749 lockmgr_printinfo(&vp->v_lock); 750 kprintf("\n"); 751 return (0); 752 } 753 754 /* 755 * smbfs_pathconf(struct vnode *vp, int name, register_t *retval) 756 */ 757 static int 758 smbfs_pathconf(struct vop_pathconf_args *ap) 759 { 760 struct smbmount *smp = VFSTOSMBFS(VTOVFS(ap->a_vp)); 761 struct smb_vc *vcp = SSTOVC(smp->sm_share); 762 register_t *retval = ap->a_retval; 763 int error = 0; 764 765 switch (ap->a_name) { 766 case _PC_LINK_MAX: 767 *retval = 0; 768 break; 769 case _PC_NAME_MAX: 770 *retval = (vcp->vc_hflags2 & SMB_FLAGS2_KNOWS_LONG_NAMES) ? 255 : 12; 771 break; 772 case _PC_PATH_MAX: 773 *retval = 800; /* XXX: a correct one ? */ 774 break; 775 default: 776 error = EINVAL; 777 } 778 return error; 779 } 780 781 /* 782 * smbfs_strategy(struct vnode *a_vp, struct bio *a_bio) 783 */ 784 static int 785 smbfs_strategy(struct vop_strategy_args *ap) 786 { 787 struct bio *bio = ap->a_bio; 788 struct thread *td = NULL; 789 int error = 0; 790 791 SMBVDEBUG("\n"); 792 if (bio->bio_flags & BIO_SYNC) 793 td = curthread; /* XXX */ 794 795 if (bio->bio_flags & BIO_SYNC) 796 error = smbfs_doio(ap->a_vp, bio, proc0.p_ucred, td); 797 return error; 798 } 799 800 /* 801 * smbfs_bmap(struct vnode *a_vp, off_t a_loffset, 802 * off_t *a_doffsetp, int *a_runp, int *a_runb) 803 */ 804 static int 805 smbfs_bmap(struct vop_bmap_args *ap) 806 { 807 if (ap->a_doffsetp != NULL) 808 *ap->a_doffsetp = ap->a_loffset; 809 if (ap->a_runp != NULL) 810 *ap->a_runp = 0; 811 if (ap->a_runb != NULL) 812 *ap->a_runb = 0; 813 return (0); 814 } 815 816 /* 817 * smbfs_ioctl(struct vnode *a_vp, u_long a_command, caddr_t a_data, 818 * int fflag, struct ucred *cred, struct proc *p) 819 */ 820 int 821 smbfs_ioctl(struct vop_ioctl_args *ap) 822 { 823 return EINVAL; 824 } 825 826 static char smbfs_atl[] = "rhsvda"; 827 828 /* 829 * smbfs_getextattr(struct vnode *a_vp, char *a_name, struct uio *a_uio, 830 * struct ucred *a_cred) 831 */ 832 static int 833 smbfs_getextattr(struct vop_getextattr_args *ap) 834 { 835 struct vnode *vp = ap->a_vp; 836 struct ucred *cred = ap->a_cred; 837 struct uio *uio = ap->a_uio; 838 const char *name = ap->a_attrname; 839 struct smbnode *np = VTOSMB(vp); 840 struct vattr vattr; 841 char buf[10]; 842 int i, attr, error; 843 844 error = VOP_EACCESS(vp, VREAD, cred); 845 if (error) 846 return error; 847 error = VOP_GETATTR(vp, &vattr); 848 if (error) 849 return error; 850 if (strcmp(name, "dosattr") == 0) { 851 attr = np->n_dosattr; 852 for (i = 0; i < 6; i++, attr >>= 1) 853 buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; 854 buf[i] = 0; 855 error = uiomove(buf, i, uio); 856 857 } else 858 error = EINVAL; 859 return error; 860 } 861 862 /* 863 * Since we expected to support F_GETLK (and SMB protocol has no such function), 864 * it is necessary to use lf_advlock(). It would be nice if this function had 865 * a callback mechanism because it will help to improve a level of consistency. 866 * 867 * smbfs_advlock(struct vnode *a_vp, caddr_t a_id, int a_op, 868 * struct flock *a_fl, int a_flags) 869 */ 870 int 871 smbfs_advlock(struct vop_advlock_args *ap) 872 { 873 struct vnode *vp = ap->a_vp; 874 struct smbnode *np = VTOSMB(vp); 875 struct flock *fl = ap->a_fl; 876 caddr_t id = (caddr_t)1 /* ap->a_id */; 877 /* int flags = ap->a_flags;*/ 878 struct thread *td = curthread; /* XXX */ 879 struct smb_cred scred; 880 off_t start, end, size; 881 int error, lkop; 882 883 if (vp->v_type == VDIR) { 884 /* 885 * SMB protocol have no support for directory locking. 886 * Although locks can be processed on local machine, I don't 887 * think that this is a good idea, because some programs 888 * can work wrong assuming directory is locked. So, we just 889 * return 'operation not supported 890 */ 891 return EOPNOTSUPP; 892 } 893 size = np->n_size; 894 switch (fl->l_whence) { 895 case SEEK_SET: 896 case SEEK_CUR: 897 start = fl->l_start; 898 break; 899 case SEEK_END: 900 start = fl->l_start + size; 901 default: 902 return EINVAL; 903 } 904 if (start < 0) 905 return EINVAL; 906 if (fl->l_len == 0) 907 end = -1; 908 else { 909 end = start + fl->l_len - 1; 910 if (end < start) 911 return EINVAL; 912 } 913 smb_makescred(&scred, td, td->td_proc ? td->td_proc->p_ucred : NULL); 914 switch (ap->a_op) { 915 case F_SETLK: 916 switch (fl->l_type) { 917 case F_WRLCK: 918 lkop = SMB_LOCK_EXCL; 919 break; 920 case F_RDLCK: 921 lkop = SMB_LOCK_SHARED; 922 break; 923 case F_UNLCK: 924 lkop = SMB_LOCK_RELEASE; 925 break; 926 default: 927 return EINVAL; 928 } 929 error = lf_advlock(ap, &np->n_lockf, size); 930 if (error) 931 break; 932 lkop = SMB_LOCK_EXCL; 933 error = smbfs_smb_lock(np, lkop, id, start, end, &scred); 934 if (error) { 935 ap->a_op = F_UNLCK; 936 lf_advlock(ap, &np->n_lockf, size); 937 } 938 break; 939 case F_UNLCK: 940 lf_advlock(ap, &np->n_lockf, size); 941 error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, id, start, end, &scred); 942 break; 943 case F_GETLK: 944 error = lf_advlock(ap, &np->n_lockf, size); 945 break; 946 default: 947 return EINVAL; 948 } 949 return error; 950 } 951 952 static int 953 smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen, int nameiop) 954 { 955 static const char *badchars = "*/:<>;?"; 956 static const char *badchars83 = " +|,"; 957 const char *cp; 958 int i, error; 959 960 /* 961 * Backslash characters, being a path delimiter, are prohibited 962 * within a path component even for LOOKUP operations. 963 */ 964 if (index(name, '\\') != NULL) 965 return ENOENT; 966 967 if (nameiop == NAMEI_LOOKUP) 968 return 0; 969 error = ENOENT; 970 if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { 971 /* 972 * Name should conform 8.3 format 973 */ 974 if (nmlen > 12) 975 return ENAMETOOLONG; 976 cp = index(name, '.'); 977 if (cp == NULL) 978 return error; 979 if (cp == name || (cp - name) > 8) 980 return error; 981 cp = index(cp + 1, '.'); 982 if (cp != NULL) 983 return error; 984 for (cp = name, i = 0; i < nmlen; i++, cp++) 985 if (index(badchars83, *cp) != NULL) 986 return error; 987 } 988 for (cp = name, i = 0; i < nmlen; i++, cp++) 989 if (index(badchars, *cp) != NULL) 990 return error; 991 return 0; 992 } 993 994 /* 995 * Things go even weird without fixed inode numbers... 996 * 997 * smbfs_lookup(struct vnode *a_dvp, struct vnode **a_vpp, 998 * struct componentname *a_cnp) 999 */ 1000 int 1001 smbfs_lookup(struct vop_old_lookup_args *ap) 1002 { 1003 struct componentname *cnp = ap->a_cnp; 1004 struct thread *td = cnp->cn_td; 1005 struct vnode *dvp = ap->a_dvp; 1006 struct vnode **vpp = ap->a_vpp; 1007 struct vnode *vp; 1008 struct smbmount *smp; 1009 struct mount *mp = dvp->v_mount; 1010 struct smbnode *dnp; 1011 struct smbfattr fattr, *fap; 1012 struct smb_cred scred; 1013 char *name = cnp->cn_nameptr; 1014 int flags = cnp->cn_flags; 1015 int nameiop = cnp->cn_nameiop; 1016 int nmlen = cnp->cn_namelen; 1017 int lockparent, wantparent, error, isdot; 1018 1019 SMBVDEBUG("\n"); 1020 cnp->cn_flags &= ~CNP_PDIRUNLOCK; 1021 *vpp = NULL; 1022 if (dvp->v_type != VDIR) 1023 return ENOTDIR; 1024 if ((flags & CNP_ISDOTDOT) && (dvp->v_flag & VROOT)) { 1025 SMBFSERR("invalid '..'\n"); 1026 return EIO; 1027 } 1028 #ifdef SMB_VNODE_DEBUG 1029 { 1030 char *cp, c; 1031 1032 cp = name + nmlen; 1033 c = *cp; 1034 *cp = 0; 1035 SMBVDEBUG("%d '%s' in '%s' id=d\n", nameiop, name, 1036 VTOSMB(dvp)->n_name); 1037 *cp = c; 1038 } 1039 #endif 1040 if ((mp->mnt_flag & MNT_RDONLY) && nameiop != NAMEI_LOOKUP) 1041 return EROFS; 1042 if ((error = VOP_EACCESS(dvp, VEXEC, cnp->cn_cred)) != 0) 1043 return error; 1044 lockparent = flags & CNP_LOCKPARENT; 1045 wantparent = flags & (CNP_LOCKPARENT | CNP_WANTPARENT); 1046 smp = VFSTOSMBFS(mp); 1047 dnp = VTOSMB(dvp); 1048 isdot = (nmlen == 1 && name[0] == '.'); 1049 1050 error = smbfs_pathcheck(smp, cnp->cn_nameptr, cnp->cn_namelen, nameiop); 1051 1052 if (error) 1053 return ENOENT; 1054 1055 error = 0; 1056 smb_makescred(&scred, td, cnp->cn_cred); 1057 fap = &fattr; 1058 if (flags & CNP_ISDOTDOT) { 1059 error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, fap, 1060 &scred); 1061 SMBVDEBUG("result of dotdot lookup: %d\n", error); 1062 } else { 1063 fap = &fattr; 1064 error = smbfs_smb_lookup(dnp, name, nmlen, fap, &scred); 1065 /* if (cnp->cn_namelen == 1 && cnp->cn_nameptr[0] == '.')*/ 1066 SMBVDEBUG("result of smbfs_smb_lookup: %d\n", error); 1067 } 1068 if (error && error != ENOENT) 1069 return error; 1070 if (error) { /* entry not found */ 1071 /* 1072 * Handle RENAME or CREATE case... 1073 */ 1074 if ((nameiop == NAMEI_CREATE || nameiop == NAMEI_RENAME) && wantparent) { 1075 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred); 1076 if (error) 1077 return error; 1078 if (!lockparent) { 1079 vn_unlock(dvp); 1080 cnp->cn_flags |= CNP_PDIRUNLOCK; 1081 } 1082 return (EJUSTRETURN); 1083 } 1084 return ENOENT; 1085 }/* else { 1086 SMBVDEBUG("Found entry %s with id=%d\n", fap->entryName, fap->dirEntNum); 1087 }*/ 1088 /* 1089 * handle DELETE case ... 1090 */ 1091 if (nameiop == NAMEI_DELETE) { /* delete last component */ 1092 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred); 1093 if (error) 1094 return error; 1095 if (isdot) { 1096 vref(dvp); 1097 *vpp = dvp; 1098 return 0; 1099 } 1100 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1101 if (error) 1102 return error; 1103 *vpp = vp; 1104 if (!lockparent) { 1105 vn_unlock(dvp); 1106 cnp->cn_flags |= CNP_PDIRUNLOCK; 1107 } 1108 return 0; 1109 } 1110 if (nameiop == NAMEI_RENAME && wantparent) { 1111 error = VOP_EACCESS(dvp, VWRITE, cnp->cn_cred); 1112 if (error) 1113 return error; 1114 if (isdot) 1115 return EISDIR; 1116 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1117 if (error) 1118 return error; 1119 *vpp = vp; 1120 if (!lockparent) { 1121 vn_unlock(dvp); 1122 cnp->cn_flags |= CNP_PDIRUNLOCK; 1123 } 1124 return 0; 1125 } 1126 if (flags & CNP_ISDOTDOT) { 1127 vn_unlock(dvp); 1128 error = smbfs_nget(mp, dvp, name, nmlen, NULL, &vp); 1129 if (error) { 1130 vn_lock(dvp, LK_EXCLUSIVE | LK_RETRY); 1131 return error; 1132 } 1133 if (lockparent) { 1134 error = vn_lock(dvp, LK_EXCLUSIVE); 1135 if (error) { 1136 cnp->cn_flags |= CNP_PDIRUNLOCK; 1137 vput(vp); 1138 return error; 1139 } 1140 } 1141 *vpp = vp; 1142 } else if (isdot) { 1143 vref(dvp); 1144 *vpp = dvp; 1145 } else { 1146 error = smbfs_nget(mp, dvp, name, nmlen, fap, &vp); 1147 if (error) 1148 return error; 1149 *vpp = vp; 1150 SMBVDEBUG("lookup: getnewvp!\n"); 1151 if (!lockparent) { 1152 vn_unlock(dvp); 1153 cnp->cn_flags |= CNP_PDIRUNLOCK; 1154 } 1155 } 1156 return 0; 1157 } 1158