| 1 | /* $NetBSD: smbfs_vnops.c,v 1.93 2014/12/21 10:48:53 hannken Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2003 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Jaromir Dolecek. |
| 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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | /* |
| 33 | * Copyright (c) 2000-2001 Boris Popov |
| 34 | * All rights reserved. |
| 35 | * |
| 36 | * Redistribution and use in source and binary forms, with or without |
| 37 | * modification, are permitted provided that the following conditions |
| 38 | * are met: |
| 39 | * 1. Redistributions of source code must retain the above copyright |
| 40 | * notice, this list of conditions and the following disclaimer. |
| 41 | * 2. Redistributions in binary form must reproduce the above copyright |
| 42 | * notice, this list of conditions and the following disclaimer in the |
| 43 | * documentation and/or other materials provided with the distribution. |
| 44 | * 3. All advertising materials mentioning features or use of this software |
| 45 | * must display the following acknowledgement: |
| 46 | * This product includes software developed by Boris Popov. |
| 47 | * 4. Neither the name of the author nor the names of any co-contributors |
| 48 | * may be used to endorse or promote products derived from this software |
| 49 | * without specific prior written permission. |
| 50 | * |
| 51 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 52 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 53 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 54 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 55 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 56 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 57 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 58 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 59 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 60 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 61 | * SUCH DAMAGE. |
| 62 | * |
| 63 | * FreeBSD: src/sys/fs/smbfs/smbfs_vnops.c,v 1.15 2001/12/20 15:56:45 bp Exp |
| 64 | */ |
| 65 | |
| 66 | #include <sys/cdefs.h> |
| 67 | __KERNEL_RCSID(0, "$NetBSD: smbfs_vnops.c,v 1.93 2014/12/21 10:48:53 hannken Exp $" ); |
| 68 | |
| 69 | #include <sys/param.h> |
| 70 | #include <sys/systm.h> |
| 71 | #include <sys/namei.h> |
| 72 | #include <sys/kernel.h> |
| 73 | #include <sys/proc.h> |
| 74 | #include <sys/buf.h> |
| 75 | #include <sys/fcntl.h> |
| 76 | #include <sys/mount.h> |
| 77 | #include <sys/unistd.h> |
| 78 | #include <sys/vnode.h> |
| 79 | #include <sys/lockf.h> |
| 80 | #include <sys/kauth.h> |
| 81 | #include <sys/mallocvar.h> |
| 82 | |
| 83 | #include <machine/limits.h> |
| 84 | |
| 85 | #include <uvm/uvm.h> |
| 86 | #include <uvm/uvm_extern.h> |
| 87 | |
| 88 | #include <netsmb/smb.h> |
| 89 | #include <netsmb/smb_conn.h> |
| 90 | #include <netsmb/smb_subr.h> |
| 91 | |
| 92 | #include <fs/smbfs/smbfs.h> |
| 93 | #include <fs/smbfs/smbfs_node.h> |
| 94 | #include <fs/smbfs/smbfs_subr.h> |
| 95 | |
| 96 | #include <miscfs/genfs/genfs.h> |
| 97 | |
| 98 | /* |
| 99 | * Prototypes for SMBFS vnode operations |
| 100 | */ |
| 101 | int smbfs_create(void *); |
| 102 | int smbfs_open(void *); |
| 103 | int smbfs_close(void *); |
| 104 | int smbfs_access(void *); |
| 105 | int smbfs_getattr(void *); |
| 106 | int smbfs_setattr(void *); |
| 107 | int smbfs_read(void *); |
| 108 | int smbfs_write(void *); |
| 109 | int smbfs_fsync(void *); |
| 110 | int smbfs_remove(void *); |
| 111 | int smbfs_link(void *); |
| 112 | int smbfs_lookup(void *); |
| 113 | int smbfs_rename(void *); |
| 114 | int smbfs_mkdir(void *); |
| 115 | int smbfs_rmdir(void *); |
| 116 | int smbfs_symlink(void *); |
| 117 | int smbfs_readdir(void *); |
| 118 | int smbfs_strategy(void *); |
| 119 | int smbfs_print(void *); |
| 120 | int smbfs_pathconf(void *ap); |
| 121 | int smbfs_advlock(void *); |
| 122 | |
| 123 | int (**smbfs_vnodeop_p)(void *); |
| 124 | static struct vnodeopv_entry_desc smbfs_vnodeop_entries[] = { |
| 125 | { &vop_default_desc, vn_default_error }, |
| 126 | { &vop_access_desc, smbfs_access }, |
| 127 | { &vop_advlock_desc, smbfs_advlock }, |
| 128 | { &vop_close_desc, smbfs_close }, |
| 129 | { &vop_create_desc, smbfs_create }, |
| 130 | { &vop_fallocate_desc, genfs_eopnotsupp }, |
| 131 | { &vop_fdiscard_desc, genfs_eopnotsupp }, |
| 132 | { &vop_fsync_desc, smbfs_fsync }, |
| 133 | { &vop_getattr_desc, smbfs_getattr }, |
| 134 | { &vop_getpages_desc, genfs_compat_getpages }, |
| 135 | { &vop_inactive_desc, smbfs_inactive }, |
| 136 | { &vop_ioctl_desc, genfs_enoioctl }, |
| 137 | { &vop_islocked_desc, genfs_islocked }, |
| 138 | { &vop_link_desc, smbfs_link }, |
| 139 | { &vop_lock_desc, genfs_lock }, |
| 140 | { &vop_lookup_desc, smbfs_lookup }, |
| 141 | { &vop_mkdir_desc, smbfs_mkdir }, |
| 142 | { &vop_mknod_desc, genfs_eopnotsupp }, |
| 143 | { &vop_open_desc, smbfs_open }, |
| 144 | { &vop_pathconf_desc, smbfs_pathconf }, |
| 145 | { &vop_print_desc, smbfs_print }, |
| 146 | { &vop_putpages_desc, genfs_putpages }, |
| 147 | { &vop_read_desc, smbfs_read }, |
| 148 | { &vop_readdir_desc, smbfs_readdir }, |
| 149 | { &vop_reclaim_desc, smbfs_reclaim }, |
| 150 | { &vop_remove_desc, smbfs_remove }, |
| 151 | { &vop_rename_desc, smbfs_rename }, |
| 152 | { &vop_rmdir_desc, smbfs_rmdir }, |
| 153 | { &vop_setattr_desc, smbfs_setattr }, |
| 154 | { &vop_strategy_desc, smbfs_strategy }, |
| 155 | { &vop_symlink_desc, smbfs_symlink }, |
| 156 | { &vop_unlock_desc, genfs_unlock }, |
| 157 | { &vop_write_desc, smbfs_write }, |
| 158 | { &vop_mmap_desc, genfs_mmap }, /* mmap */ |
| 159 | { &vop_seek_desc, genfs_seek }, /* seek */ |
| 160 | { &vop_kqfilter_desc, smbfs_kqfilter}, /* kqfilter */ |
| 161 | { NULL, NULL } |
| 162 | }; |
| 163 | const struct vnodeopv_desc smbfs_vnodeop_opv_desc = |
| 164 | { &smbfs_vnodeop_p, smbfs_vnodeop_entries }; |
| 165 | |
| 166 | static int |
| 167 | smbfs_check_possible(struct vnode *vp, struct smbnode *np, mode_t mode) |
| 168 | { |
| 169 | |
| 170 | /* |
| 171 | * Disallow write attempts on read-only file systems; |
| 172 | * unless the file is a socket, fifo, or a block or |
| 173 | * character device resident on the file system. |
| 174 | */ |
| 175 | if (mode & VWRITE) { |
| 176 | switch (vp->v_type) { |
| 177 | case VREG: |
| 178 | case VDIR: |
| 179 | case VLNK: |
| 180 | if (vp->v_mount->mnt_flag & MNT_RDONLY) |
| 181 | return EROFS; |
| 182 | default: |
| 183 | break; |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | static int |
| 191 | smbfs_check_permitted(struct vnode *vp, struct smbnode *np, mode_t mode, |
| 192 | kauth_cred_t cred) |
| 193 | { |
| 194 | struct smbmount *smp = VTOSMBFS(vp); |
| 195 | mode_t file_mode = (vp->v_type == VDIR) ? smp->sm_args.dir_mode : |
| 196 | smp->sm_args.file_mode; |
| 197 | |
| 198 | return kauth_authorize_vnode(cred, KAUTH_ACCESS_ACTION(mode, |
| 199 | vp->v_type, file_mode), vp, NULL, genfs_can_access(vp->v_type, |
| 200 | file_mode, smp->sm_args.uid, smp->sm_args.gid, mode, cred)); |
| 201 | } |
| 202 | |
| 203 | int |
| 204 | smbfs_access(void *v) |
| 205 | { |
| 206 | struct vop_access_args /* { |
| 207 | struct vnode *a_vp; |
| 208 | int a_mode; |
| 209 | kauth_cred_t a_cred; |
| 210 | } */ *ap = v; |
| 211 | struct vnode *vp = ap->a_vp; |
| 212 | struct smbnode *np = VTOSMB(vp); |
| 213 | u_int acc_mode = ap->a_mode; |
| 214 | int error; |
| 215 | #ifdef SMB_VNODE_DEBUG |
| 216 | struct smbmount *smp = VTOSMBFS(vp); |
| 217 | #endif |
| 218 | |
| 219 | SMBVDEBUG("file '%.*s', node mode=%o, acc mode=%x\n" , |
| 220 | (int) np->n_nmlen, np->n_name, |
| 221 | (vp->v_type == VDIR) ? smp->sm_args.dir_mode : smp->sm_args.file_mode, |
| 222 | acc_mode); |
| 223 | |
| 224 | error = smbfs_check_possible(vp, np, acc_mode); |
| 225 | if (error) |
| 226 | return error; |
| 227 | |
| 228 | error = smbfs_check_permitted(vp, np, acc_mode, ap->a_cred); |
| 229 | |
| 230 | return error; |
| 231 | } |
| 232 | |
| 233 | /* ARGSUSED */ |
| 234 | int |
| 235 | smbfs_open(void *v) |
| 236 | { |
| 237 | struct vop_open_args /* { |
| 238 | struct vnode *a_vp; |
| 239 | int a_mode; |
| 240 | kauth_cred_t a_cred; |
| 241 | } */ *ap = v; |
| 242 | struct lwp *l = curlwp; |
| 243 | struct vnode *vp = ap->a_vp; |
| 244 | struct smbnode *np = VTOSMB(vp); |
| 245 | struct smb_cred scred; |
| 246 | struct vattr vattr; |
| 247 | u_int32_t sv_caps = SMB_CAPS(SSTOVC(np->n_mount->sm_share)); |
| 248 | int error, accmode; |
| 249 | |
| 250 | SMBVDEBUG("%.*s,%d\n" , (int) np->n_nmlen, np->n_name, |
| 251 | (np->n_flag & NOPEN) != 0); |
| 252 | if (vp->v_type != VREG && vp->v_type != VDIR) { |
| 253 | SMBFSERR("open eacces vtype=%d\n" , vp->v_type); |
| 254 | return EACCES; |
| 255 | } |
| 256 | if (vp->v_type == VDIR) { |
| 257 | if ((sv_caps & SMB_CAP_NT_SMBS) == 0) { |
| 258 | np->n_flag |= NOPEN; |
| 259 | return 0; |
| 260 | } |
| 261 | goto do_open; /* skip 'modified' check */ |
| 262 | } |
| 263 | |
| 264 | if (np->n_flag & NMODIFIED) { |
| 265 | if ((error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1)) == EINTR) |
| 266 | return error; |
| 267 | smbfs_attr_cacheremove(vp); |
| 268 | error = VOP_GETATTR(vp, &vattr, ap->a_cred); |
| 269 | if (error) |
| 270 | return error; |
| 271 | np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; |
| 272 | } else { |
| 273 | error = VOP_GETATTR(vp, &vattr, ap->a_cred); |
| 274 | if (error) |
| 275 | return error; |
| 276 | if (np->n_mtime.tv_sec != vattr.va_mtime.tv_sec) { |
| 277 | error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1); |
| 278 | if (error == EINTR) |
| 279 | return error; |
| 280 | np->n_mtime.tv_sec = vattr.va_mtime.tv_sec; |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | do_open: |
| 285 | if ((np->n_flag & NOPEN) != 0) |
| 286 | return 0; |
| 287 | |
| 288 | smb_makescred(&scred, l, ap->a_cred); |
| 289 | if (vp->v_type == VDIR) |
| 290 | error = smbfs_smb_ntcreatex(np, |
| 291 | SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred); |
| 292 | else { |
| 293 | /* |
| 294 | * Use DENYNONE to give unixy semantics of permitting |
| 295 | * everything not forbidden by permissions. Ie denial |
| 296 | * is up to server with clients/openers needing to use |
| 297 | * advisory locks for further control. |
| 298 | */ |
| 299 | accmode = SMB_SM_DENYNONE|SMB_AM_OPENREAD; |
| 300 | if ((vp->v_mount->mnt_flag & MNT_RDONLY) == 0) |
| 301 | accmode = SMB_SM_DENYNONE|SMB_AM_OPENRW; |
| 302 | error = smbfs_smb_open(np, accmode, &scred); |
| 303 | if (error) { |
| 304 | if (ap->a_mode & FWRITE) |
| 305 | return EACCES; |
| 306 | |
| 307 | error = smbfs_smb_open(np, |
| 308 | SMB_SM_DENYNONE|SMB_AM_OPENREAD, &scred); |
| 309 | } |
| 310 | } |
| 311 | if (!error) |
| 312 | np->n_flag |= NOPEN; |
| 313 | smbfs_attr_cacheremove(vp); |
| 314 | return error; |
| 315 | } |
| 316 | |
| 317 | /* |
| 318 | * Close called. |
| 319 | */ |
| 320 | int |
| 321 | smbfs_close(void *v) |
| 322 | { |
| 323 | struct vop_close_args /* { |
| 324 | struct vnodeop_desc *a_desc; |
| 325 | struct vnode *a_vp; |
| 326 | int a_fflag; |
| 327 | kauth_cred_t a_cred; |
| 328 | } */ *ap = v; |
| 329 | int error; |
| 330 | struct lwp *l = curlwp; |
| 331 | struct vnode *vp = ap->a_vp; |
| 332 | struct smbnode *np = VTOSMB(vp); |
| 333 | |
| 334 | /* Flush all file data */ |
| 335 | error = smbfs_vinvalbuf(vp, V_SAVE, ap->a_cred, l, 1); |
| 336 | if (error) |
| 337 | return (error); |
| 338 | |
| 339 | /* |
| 340 | * We must close the directory lookup context now, so that |
| 341 | * later directory changes would be properly detected. |
| 342 | * Ideally, the lookup routines should handle such case, and |
| 343 | * the context would be removed only in smbfs_inactive(). |
| 344 | */ |
| 345 | if (vp->v_type == VDIR && (np->n_flag & NOPEN) != 0) { |
| 346 | struct smb_share *ssp = np->n_mount->sm_share; |
| 347 | struct smb_cred scred; |
| 348 | |
| 349 | smb_makescred(&scred, l, ap->a_cred); |
| 350 | |
| 351 | if (np->n_dirseq != NULL) { |
| 352 | smbfs_findclose(np->n_dirseq, &scred); |
| 353 | np->n_dirseq = NULL; |
| 354 | } |
| 355 | |
| 356 | if (SMB_CAPS(SSTOVC(ssp)) & SMB_CAP_NT_SMBS) |
| 357 | smbfs_smb_close(ssp, np->n_fid, &np->n_mtime, &scred); |
| 358 | |
| 359 | np->n_flag &= ~NOPEN; |
| 360 | smbfs_attr_cacheremove(vp); |
| 361 | } |
| 362 | |
| 363 | return (0); |
| 364 | } |
| 365 | |
| 366 | /* |
| 367 | * smbfs_getattr call from vfs. |
| 368 | */ |
| 369 | int |
| 370 | smbfs_getattr(void *v) |
| 371 | { |
| 372 | struct vop_getattr_args /* { |
| 373 | struct vnode *a_vp; |
| 374 | struct vattr *a_vap; |
| 375 | kauth_cred_t a_cred; |
| 376 | } */ *ap = v; |
| 377 | struct vnode *vp = ap->a_vp; |
| 378 | struct smbnode *np = VTOSMB(vp); |
| 379 | struct vattr *va=ap->a_vap; |
| 380 | struct smbfattr fattr; |
| 381 | struct smb_cred scred; |
| 382 | u_quad_t oldsize; |
| 383 | int error; |
| 384 | |
| 385 | SMBVDEBUG("%p: '%.*s' isroot %d\n" , vp, |
| 386 | (int) np->n_nmlen, np->n_name, (vp->v_vflag & VV_ROOT) != 0); |
| 387 | |
| 388 | if ((error = smbfs_attr_cachelookup(vp, va)) == 0) |
| 389 | return (0); |
| 390 | |
| 391 | SMBVDEBUG0("not in the cache\n" ); |
| 392 | smb_makescred(&scred, curlwp, ap->a_cred); |
| 393 | oldsize = np->n_size; |
| 394 | error = smbfs_smb_lookup(np, NULL, 0, &fattr, &scred); |
| 395 | if (error) { |
| 396 | SMBVDEBUG("error %d\n" , error); |
| 397 | return error; |
| 398 | } |
| 399 | smbfs_attr_cacheenter(vp, &fattr); |
| 400 | smbfs_attr_cachelookup(vp, va); |
| 401 | if ((np->n_flag & NOPEN) != 0) |
| 402 | np->n_size = oldsize; |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | int |
| 407 | smbfs_setattr(void *v) |
| 408 | { |
| 409 | struct vop_setattr_args /* { |
| 410 | struct vnode *a_vp; |
| 411 | struct vattr *a_vap; |
| 412 | kauth_cred_t a_cred; |
| 413 | } */ *ap = v; |
| 414 | struct lwp *l = curlwp; |
| 415 | struct vnode *vp = ap->a_vp; |
| 416 | struct smbnode *np = VTOSMB(vp); |
| 417 | struct vattr *vap = ap->a_vap; |
| 418 | struct timespec *mtime, *atime; |
| 419 | struct smb_cred scred; |
| 420 | struct smb_share *ssp = np->n_mount->sm_share; |
| 421 | struct smb_vc *vcp = SSTOVC(ssp); |
| 422 | u_quad_t tsize = 0; |
| 423 | int isreadonly, doclose, error = 0; |
| 424 | |
| 425 | SMBVDEBUG0("\n" ); |
| 426 | if (vap->va_flags != VNOVAL) |
| 427 | return EOPNOTSUPP; |
| 428 | isreadonly = (vp->v_mount->mnt_flag & MNT_RDONLY); |
| 429 | /* |
| 430 | * Disallow write attempts if the filesystem is mounted read-only. |
| 431 | */ |
| 432 | if ((vap->va_uid != (uid_t)VNOVAL || vap->va_gid != (gid_t)VNOVAL || |
| 433 | vap->va_atime.tv_sec != VNOVAL || vap->va_mtime.tv_sec != VNOVAL || |
| 434 | vap->va_mode != (mode_t)VNOVAL) && isreadonly) |
| 435 | return EROFS; |
| 436 | smb_makescred(&scred, l, ap->a_cred); |
| 437 | if (vap->va_size != VNOVAL) { |
| 438 | switch (vp->v_type) { |
| 439 | case VDIR: |
| 440 | return EISDIR; |
| 441 | case VREG: |
| 442 | break; |
| 443 | default: |
| 444 | return EINVAL; |
| 445 | }; |
| 446 | if (isreadonly) |
| 447 | return EROFS; |
| 448 | doclose = 0; |
| 449 | tsize = np->n_size; |
| 450 | np->n_size = vap->va_size; |
| 451 | uvm_vnp_setsize(vp, vap->va_size); |
| 452 | if ((np->n_flag & NOPEN) == 0) { |
| 453 | error = smbfs_smb_open(np, |
| 454 | SMB_SM_DENYNONE|SMB_AM_OPENRW, &scred); |
| 455 | if (error == 0) |
| 456 | doclose = 1; |
| 457 | } |
| 458 | if (error == 0) |
| 459 | error = smbfs_smb_setfsize(np, vap->va_size, &scred); |
| 460 | if (doclose) |
| 461 | smbfs_smb_close(ssp, np->n_fid, NULL, &scred); |
| 462 | if (error) { |
| 463 | np->n_size = tsize; |
| 464 | uvm_vnp_setsize(vp, tsize); |
| 465 | return (error); |
| 466 | } |
| 467 | } |
| 468 | mtime = atime = NULL; |
| 469 | if (vap->va_mtime.tv_sec != VNOVAL) |
| 470 | mtime = &vap->va_mtime; |
| 471 | if (vap->va_atime.tv_sec != VNOVAL) |
| 472 | atime = &vap->va_atime; |
| 473 | if (mtime != atime) { |
| 474 | error = kauth_authorize_vnode(ap->a_cred, |
| 475 | KAUTH_VNODE_WRITE_TIMES, ap->a_vp, NULL, |
| 476 | genfs_can_chtimes(ap->a_vp, vap->va_vaflags, |
| 477 | VTOSMBFS(vp)->sm_args.uid, ap->a_cred)); |
| 478 | if (error) |
| 479 | return (error); |
| 480 | |
| 481 | #if 0 |
| 482 | if (mtime == NULL) |
| 483 | mtime = &np->n_mtime; |
| 484 | if (atime == NULL) |
| 485 | atime = &np->n_atime; |
| 486 | #endif |
| 487 | /* |
| 488 | * If file is opened, then we can use handle based calls. |
| 489 | * If not, use path based ones. |
| 490 | */ |
| 491 | if ((np->n_flag & NOPEN) == 0) { |
| 492 | if (vcp->vc_flags & SMBV_WIN95) { |
| 493 | error = VOP_OPEN(vp, FWRITE, ap->a_cred); |
| 494 | if (!error) { |
| 495 | /* error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); |
| 496 | VOP_GETATTR(vp, &vattr, ap->a_cred);*/ |
| 497 | if (mtime) |
| 498 | np->n_mtime = *mtime; |
| 499 | VOP_CLOSE(vp, FWRITE, ap->a_cred); |
| 500 | } |
| 501 | } else if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) { |
| 502 | error = smbfs_smb_setpattrNT(np, 0, mtime, atime, &scred); |
| 503 | } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN2_0) { |
| 504 | error = smbfs_smb_setptime2(np, mtime, atime, 0, &scred); |
| 505 | } else { |
| 506 | error = smbfs_smb_setpattr(np, 0, mtime, &scred); |
| 507 | } |
| 508 | } else { |
| 509 | if (SMB_CAPS(vcp) & SMB_CAP_NT_SMBS) { |
| 510 | error = smbfs_smb_setfattrNT(np, 0, mtime, atime, &scred); |
| 511 | } else if (SMB_DIALECT(vcp) >= SMB_DIALECT_LANMAN1_0) { |
| 512 | error = smbfs_smb_setftime(np, mtime, atime, &scred); |
| 513 | } else { |
| 514 | /* |
| 515 | * XXX I have no idea how to handle this for core |
| 516 | * level servers. The possible solution is to |
| 517 | * update mtime after file is closed. |
| 518 | */ |
| 519 | } |
| 520 | } |
| 521 | } |
| 522 | /* |
| 523 | * Invalidate attribute cache in case if server doesn't set |
| 524 | * required attributes. |
| 525 | */ |
| 526 | smbfs_attr_cacheremove(vp); /* invalidate cache */ |
| 527 | VOP_GETATTR(vp, vap, ap->a_cred); |
| 528 | np->n_mtime.tv_sec = vap->va_mtime.tv_sec; |
| 529 | VN_KNOTE(vp, NOTE_ATTRIB); |
| 530 | return error; |
| 531 | } |
| 532 | /* |
| 533 | * smbfs_read call. |
| 534 | */ |
| 535 | int |
| 536 | smbfs_read(void *v) |
| 537 | { |
| 538 | struct vop_read_args /* { |
| 539 | struct vnode *a_vp; |
| 540 | struct uio *a_uio; |
| 541 | int a_ioflag; |
| 542 | kauth_cred_t a_cred; |
| 543 | } */ *ap = v; |
| 544 | struct vnode *vp = ap->a_vp; |
| 545 | |
| 546 | if (vp->v_type != VREG && vp->v_type != VDIR) |
| 547 | return EPERM; |
| 548 | |
| 549 | return smbfs_readvnode(vp, ap->a_uio, ap->a_cred); |
| 550 | } |
| 551 | |
| 552 | int |
| 553 | smbfs_write(void *v) |
| 554 | { |
| 555 | struct vop_write_args /* { |
| 556 | struct vnode *a_vp; |
| 557 | struct uio *a_uio; |
| 558 | int a_ioflag; |
| 559 | kauth_cred_t a_cred; |
| 560 | } */ *ap = v; |
| 561 | struct vnode *vp = ap->a_vp; |
| 562 | struct uio *uio = ap->a_uio; |
| 563 | |
| 564 | SMBVDEBUG("%d,ofs=%lld,sz=%zu\n" ,vp->v_type, |
| 565 | (long long int)uio->uio_offset, uio->uio_resid); |
| 566 | if (vp->v_type != VREG) |
| 567 | return (EPERM); |
| 568 | return smbfs_writevnode(vp, uio, ap->a_cred, ap->a_ioflag); |
| 569 | } |
| 570 | /* |
| 571 | * smbfs_create call |
| 572 | * Create a regular file. On entry the directory to contain the file being |
| 573 | * created is locked. We must release before we return. |
| 574 | */ |
| 575 | int |
| 576 | smbfs_create(void *v) |
| 577 | { |
| 578 | struct vop_create_v3_args /* { |
| 579 | struct vnode *a_dvp; |
| 580 | struct vnode **a_vpp; |
| 581 | struct componentname *a_cnp; |
| 582 | struct vattr *a_vap; |
| 583 | } */ *ap = v; |
| 584 | struct vnode *dvp = ap->a_dvp; |
| 585 | struct vattr *vap = ap->a_vap; |
| 586 | struct componentname *cnp = ap->a_cnp; |
| 587 | struct smbnode *dnp = VTOSMB(dvp); |
| 588 | struct smbfattr fattr; |
| 589 | struct smb_cred scred; |
| 590 | const char *name = cnp->cn_nameptr; |
| 591 | int nmlen = cnp->cn_namelen; |
| 592 | int error = EINVAL; |
| 593 | |
| 594 | |
| 595 | if (vap->va_type != VREG) |
| 596 | goto out; |
| 597 | |
| 598 | smb_makescred(&scred, curlwp, cnp->cn_cred); |
| 599 | error = smbfs_smb_create(dnp, name, nmlen, &scred); |
| 600 | if (error) |
| 601 | goto out; |
| 602 | |
| 603 | error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); |
| 604 | if (error) |
| 605 | goto out; |
| 606 | error = smbfs_nget(VTOVFS(dvp), dvp, name, nmlen, &fattr, ap->a_vpp); |
| 607 | if (error) |
| 608 | goto out; |
| 609 | |
| 610 | cache_enter(dvp, *ap->a_vpp, cnp->cn_nameptr, cnp->cn_namelen, |
| 611 | cnp->cn_flags); |
| 612 | |
| 613 | out: |
| 614 | VN_KNOTE(dvp, NOTE_WRITE); |
| 615 | return (error); |
| 616 | } |
| 617 | |
| 618 | int |
| 619 | smbfs_remove(void *v) |
| 620 | { |
| 621 | struct vop_remove_args /* { |
| 622 | struct vnodeop_desc *a_desc; |
| 623 | struct vnode * a_dvp; |
| 624 | struct vnode * a_vp; |
| 625 | struct componentname * a_cnp; |
| 626 | } */ *ap = v; |
| 627 | struct vnode *vp = ap->a_vp; |
| 628 | struct vnode *dvp = ap->a_dvp; |
| 629 | struct componentname *cnp = ap->a_cnp; |
| 630 | struct smbnode *np = VTOSMB(vp); |
| 631 | struct smb_cred scred; |
| 632 | int error; |
| 633 | |
| 634 | if (vp->v_type == VDIR || (np->n_flag & NOPEN) != 0 |
| 635 | || vp->v_usecount != 1) { |
| 636 | /* XXX Eventually should do something along NFS sillyrename */ |
| 637 | error = EPERM; |
| 638 | } else { |
| 639 | smb_makescred(&scred, curlwp, cnp->cn_cred); |
| 640 | error = smbfs_smb_delete(np, &scred); |
| 641 | } |
| 642 | if (error == 0) |
| 643 | np->n_flag |= NGONE; |
| 644 | |
| 645 | VN_KNOTE(ap->a_vp, NOTE_DELETE); |
| 646 | VN_KNOTE(ap->a_dvp, NOTE_WRITE); |
| 647 | if (dvp == vp) |
| 648 | vrele(vp); |
| 649 | else |
| 650 | vput(vp); |
| 651 | vput(dvp); |
| 652 | return (error); |
| 653 | } |
| 654 | |
| 655 | /* |
| 656 | * smbfs_file rename call |
| 657 | */ |
| 658 | int |
| 659 | smbfs_rename(void *v) |
| 660 | { |
| 661 | struct vop_rename_args /* { |
| 662 | struct vnode *a_fdvp; |
| 663 | struct vnode *a_fvp; |
| 664 | struct componentname *a_fcnp; |
| 665 | struct vnode *a_tdvp; |
| 666 | struct vnode *a_tvp; |
| 667 | struct componentname *a_tcnp; |
| 668 | } */ *ap = v; |
| 669 | struct vnode *fvp = ap->a_fvp; |
| 670 | struct vnode *tvp = ap->a_tvp; |
| 671 | struct vnode *fdvp = ap->a_fdvp; |
| 672 | struct vnode *tdvp = ap->a_tdvp; |
| 673 | struct componentname *tcnp = ap->a_tcnp; |
| 674 | /* struct componentname *fcnp = ap->a_fcnp;*/ |
| 675 | struct smb_cred scred; |
| 676 | #ifdef notyet |
| 677 | u_int16_t flags = 6; |
| 678 | #endif |
| 679 | int error=0; |
| 680 | |
| 681 | /* Check for cross-device rename */ |
| 682 | if ((fvp->v_mount != tdvp->v_mount) || |
| 683 | (tvp && (fvp->v_mount != tvp->v_mount))) { |
| 684 | error = EXDEV; |
| 685 | goto out; |
| 686 | } |
| 687 | |
| 688 | if (tvp && tvp->v_usecount > 1) { |
| 689 | error = EBUSY; |
| 690 | goto out; |
| 691 | } |
| 692 | #ifdef notnow |
| 693 | flags = 0x10; /* verify all writes */ |
| 694 | if (fvp->v_type == VDIR) { |
| 695 | flags |= 2; |
| 696 | } else if (fvp->v_type == VREG) { |
| 697 | flags |= 1; |
| 698 | } else { |
| 699 | error = EINVAL; |
| 700 | goto out; |
| 701 | } |
| 702 | #endif |
| 703 | smb_makescred(&scred, curlwp, tcnp->cn_cred); |
| 704 | /* |
| 705 | * It seems that Samba doesn't implement SMB_COM_MOVE call... |
| 706 | */ |
| 707 | #ifdef notnow |
| 708 | if (SMB_DIALECT(SSTOCN(smp->sm_share)) >= SMB_DIALECT_LANMAN1_0) { |
| 709 | error = smbfs_smb_move(VTOSMB(fvp), VTOSMB(tdvp), |
| 710 | tcnp->cn_nameptr, tcnp->cn_namelen, flags, &scred); |
| 711 | } else |
| 712 | #endif |
| 713 | { |
| 714 | /* |
| 715 | * We have to do the work atomicaly |
| 716 | */ |
| 717 | if (tvp && tvp != fvp) { |
| 718 | error = smbfs_smb_delete(VTOSMB(tvp), &scred); |
| 719 | if (error) |
| 720 | goto out; |
| 721 | VTOSMB(tvp)->n_flag |= NGONE; |
| 722 | VN_KNOTE(tdvp, NOTE_WRITE); |
| 723 | VN_KNOTE(tvp, NOTE_DELETE); |
| 724 | cache_purge(tvp); |
| 725 | } |
| 726 | error = smbfs_smb_rename(VTOSMB(fvp), VTOSMB(tdvp), |
| 727 | tcnp->cn_nameptr, tcnp->cn_namelen, &scred); |
| 728 | VTOSMB(fvp)->n_flag |= NGONE; |
| 729 | VN_KNOTE(fdvp, NOTE_WRITE); |
| 730 | VN_KNOTE(fvp, NOTE_RENAME); |
| 731 | } |
| 732 | |
| 733 | if (fvp->v_type == VDIR) { |
| 734 | if (tvp != NULL && tvp->v_type == VDIR) |
| 735 | cache_purge(tdvp); |
| 736 | cache_purge(fdvp); |
| 737 | } |
| 738 | |
| 739 | smbfs_attr_cacheremove(fdvp); |
| 740 | smbfs_attr_cacheremove(tdvp); |
| 741 | |
| 742 | out: |
| 743 | |
| 744 | if (tdvp == tvp) |
| 745 | vrele(tdvp); |
| 746 | else |
| 747 | vput(tdvp); |
| 748 | if (tvp) |
| 749 | vput(tvp); |
| 750 | |
| 751 | vrele(fdvp); |
| 752 | vrele(fvp); |
| 753 | |
| 754 | return (error); |
| 755 | } |
| 756 | |
| 757 | /* |
| 758 | * somtime it will come true... |
| 759 | */ |
| 760 | int |
| 761 | smbfs_link(void *v) |
| 762 | { |
| 763 | return genfs_eopnotsupp(v); |
| 764 | } |
| 765 | |
| 766 | /* |
| 767 | * smbfs_symlink link create call. |
| 768 | * Sometime it will be functional... |
| 769 | */ |
| 770 | int |
| 771 | smbfs_symlink(void *v) |
| 772 | { |
| 773 | return genfs_eopnotsupp(v); |
| 774 | } |
| 775 | |
| 776 | int |
| 777 | smbfs_mkdir(void *v) |
| 778 | { |
| 779 | struct vop_mkdir_v3_args /* { |
| 780 | struct vnode *a_dvp; |
| 781 | struct vnode **a_vpp; |
| 782 | struct componentname *a_cnp; |
| 783 | struct vattr *a_vap; |
| 784 | } */ *ap = v; |
| 785 | struct vnode *dvp = ap->a_dvp; |
| 786 | /* struct vattr *vap = ap->a_vap;*/ |
| 787 | struct vnode *vp; |
| 788 | struct componentname *cnp = ap->a_cnp; |
| 789 | struct smbnode *dnp = VTOSMB(dvp); |
| 790 | struct smb_cred scred; |
| 791 | struct smbfattr fattr; |
| 792 | const char *name = cnp->cn_nameptr; |
| 793 | int len = cnp->cn_namelen; |
| 794 | int error; |
| 795 | |
| 796 | if ((name[0] == '.') && ((len == 1) || ((len == 2) && (name[1] == '.')))){ |
| 797 | error = EEXIST; |
| 798 | goto out; |
| 799 | } |
| 800 | |
| 801 | smb_makescred(&scred, curlwp, cnp->cn_cred); |
| 802 | error = smbfs_smb_mkdir(dnp, name, len, &scred); |
| 803 | if (error) |
| 804 | goto out; |
| 805 | error = smbfs_smb_lookup(dnp, name, len, &fattr, &scred); |
| 806 | if (error) |
| 807 | goto out; |
| 808 | error = smbfs_nget(VTOVFS(dvp), dvp, name, len, &fattr, &vp); |
| 809 | if (error) |
| 810 | goto out; |
| 811 | *ap->a_vpp = vp; |
| 812 | |
| 813 | out: |
| 814 | VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); |
| 815 | |
| 816 | return (error); |
| 817 | } |
| 818 | |
| 819 | /* |
| 820 | * smbfs_remove directory call |
| 821 | */ |
| 822 | int |
| 823 | smbfs_rmdir(void *v) |
| 824 | { |
| 825 | struct vop_rmdir_args /* { |
| 826 | struct vnode *a_dvp; |
| 827 | struct vnode *a_vp; |
| 828 | struct componentname *a_cnp; |
| 829 | } */ *ap = v; |
| 830 | struct vnode *vp = ap->a_vp; |
| 831 | struct vnode *dvp = ap->a_dvp; |
| 832 | struct componentname *cnp = ap->a_cnp; |
| 833 | /* struct smbmount *smp = VTOSMBFS(vp);*/ |
| 834 | struct smbnode *dnp = VTOSMB(dvp); |
| 835 | struct smbnode *np = VTOSMB(vp); |
| 836 | struct smb_cred scred; |
| 837 | int error; |
| 838 | |
| 839 | if (dvp == vp) { |
| 840 | vrele(dvp); |
| 841 | vput(dvp); |
| 842 | return (EINVAL); |
| 843 | } |
| 844 | |
| 845 | smb_makescred(&scred, curlwp, cnp->cn_cred); |
| 846 | error = smbfs_smb_rmdir(np, &scred); |
| 847 | if (error == 0) |
| 848 | np->n_flag |= NGONE; |
| 849 | dnp->n_flag |= NMODIFIED; |
| 850 | smbfs_attr_cacheremove(dvp); |
| 851 | VN_KNOTE(dvp, NOTE_WRITE | NOTE_LINK); |
| 852 | VN_KNOTE(vp, NOTE_DELETE); |
| 853 | cache_purge(dvp); |
| 854 | cache_purge(vp); |
| 855 | vput(vp); |
| 856 | vput(dvp); |
| 857 | |
| 858 | return (error); |
| 859 | } |
| 860 | |
| 861 | /* |
| 862 | * smbfs_readdir call |
| 863 | */ |
| 864 | int |
| 865 | smbfs_readdir(void *v) |
| 866 | { |
| 867 | struct vop_readdir_args /* { |
| 868 | struct vnode *a_vp; |
| 869 | struct uio *a_uio; |
| 870 | kauth_cred_t a_cred; |
| 871 | int *a_eofflag; |
| 872 | u_long *a_cookies; |
| 873 | int a_ncookies; |
| 874 | } */ *ap = v; |
| 875 | struct vnode *vp = ap->a_vp; |
| 876 | |
| 877 | if (vp->v_type != VDIR) |
| 878 | return (EPERM); |
| 879 | #ifdef notnow |
| 880 | if (ap->a_ncookies) { |
| 881 | printf("smbfs_readdir: no support for cookies now..." ); |
| 882 | return (EOPNOTSUPP); |
| 883 | } |
| 884 | #endif |
| 885 | return (smbfs_readvnode(vp, ap->a_uio, ap->a_cred)); |
| 886 | } |
| 887 | |
| 888 | /* ARGSUSED */ |
| 889 | int |
| 890 | smbfs_fsync(void *v) |
| 891 | { |
| 892 | /*return (smb_flush(ap->a_vp, ap->a_cred, ap->a_waitfor, ap->a_l, 1));*/ |
| 893 | return (0); |
| 894 | } |
| 895 | |
| 896 | int |
| 897 | smbfs_print(void *v) |
| 898 | { |
| 899 | struct vop_print_args /* { |
| 900 | struct vnode *a_vp; |
| 901 | } */ *ap = v; |
| 902 | struct vnode *vp = ap->a_vp; |
| 903 | struct smbnode *np = VTOSMB(vp); |
| 904 | |
| 905 | printf("tag VT_SMBFS, name = %.*s, parent = %p, open = %d\n" , |
| 906 | (int)np->n_nmlen, np->n_name, |
| 907 | np->n_parent ? np->n_parent : NULL, |
| 908 | (np->n_flag & NOPEN) != 0); |
| 909 | return (0); |
| 910 | } |
| 911 | |
| 912 | int |
| 913 | smbfs_pathconf(void *v) |
| 914 | { |
| 915 | struct vop_pathconf_args /* { |
| 916 | struct vnode *vp; |
| 917 | int a_name; |
| 918 | register_t *a_retval; |
| 919 | } */ *ap = v; |
| 920 | register_t *retval = ap->a_retval; |
| 921 | int error = 0; |
| 922 | |
| 923 | switch (ap->a_name) { |
| 924 | case _PC_PIPE_BUF: |
| 925 | *retval = PIPE_BUF; |
| 926 | break; |
| 927 | case _PC_SYNC_IO: |
| 928 | *retval = 1; |
| 929 | break; |
| 930 | case _PC_LINK_MAX: |
| 931 | *retval = 0; |
| 932 | break; |
| 933 | case _PC_NAME_MAX: |
| 934 | *retval = ap->a_vp->v_mount->mnt_stat.f_namemax; |
| 935 | break; |
| 936 | case _PC_PATH_MAX: |
| 937 | *retval = 800; /* XXX: a correct one ? */ |
| 938 | break; |
| 939 | default: |
| 940 | error = EINVAL; |
| 941 | break; |
| 942 | } |
| 943 | |
| 944 | return (error); |
| 945 | } |
| 946 | |
| 947 | int |
| 948 | smbfs_strategy(void *v) |
| 949 | { |
| 950 | struct vop_strategy_args /* { |
| 951 | struct vnode *a_vp; |
| 952 | struct buf *a_bp; |
| 953 | } */ *ap = v; |
| 954 | struct buf *bp = ap->a_bp; |
| 955 | kauth_cred_t cr; |
| 956 | struct lwp *l; |
| 957 | int error = 0; |
| 958 | |
| 959 | SMBVDEBUG0("\n" ); |
| 960 | if ((bp->b_flags & (B_PHYS|B_ASYNC)) == (B_PHYS|B_ASYNC)) |
| 961 | panic("smbfs physio/async" ); |
| 962 | if (bp->b_flags & B_ASYNC) { |
| 963 | l = NULL; |
| 964 | cr = NULL; |
| 965 | } else { |
| 966 | l = curlwp; /* XXX */ |
| 967 | cr = l->l_cred; |
| 968 | } |
| 969 | |
| 970 | if ((bp->b_flags & B_ASYNC) == 0) |
| 971 | error = smbfs_doio(bp, cr, l); |
| 972 | |
| 973 | return (error); |
| 974 | } |
| 975 | |
| 976 | #ifndef __NetBSD__ |
| 977 | static char smbfs_atl[] = "rhsvda" ; |
| 978 | static int |
| 979 | smbfs_getextattr(struct vop_getextattr_args *ap) |
| 980 | /* { |
| 981 | IN struct vnode *a_vp; |
| 982 | IN char *a_name; |
| 983 | INOUT struct uio *a_uio; |
| 984 | IN kauth_cred_t a_cred; |
| 985 | }; |
| 986 | */ |
| 987 | { |
| 988 | struct vnode *vp = ap->a_vp; |
| 989 | struct lwp *l = ap->a_l; |
| 990 | kauth_cred_t cred = ap->a_cred; |
| 991 | struct uio *uio = ap->a_uio; |
| 992 | const char *name = ap->a_name; |
| 993 | struct smbnode *np = VTOSMB(vp); |
| 994 | struct vattr vattr; |
| 995 | char buf[10]; |
| 996 | int i, attr, error; |
| 997 | |
| 998 | error = VOP_ACCESS(vp, VREAD, cred, td); |
| 999 | if (error) |
| 1000 | return error; |
| 1001 | error = VOP_GETATTR(vp, &vattr, cred, td); |
| 1002 | if (error) |
| 1003 | return error; |
| 1004 | if (strcmp(name, "dosattr" ) == 0) { |
| 1005 | attr = np->n_dosattr; |
| 1006 | for (i = 0; i < 6; i++, attr >>= 1) |
| 1007 | buf[i] = (attr & 1) ? smbfs_atl[i] : '-'; |
| 1008 | buf[i] = 0; |
| 1009 | error = uiomove(buf, i, uio); |
| 1010 | |
| 1011 | } else |
| 1012 | error = EINVAL; |
| 1013 | return error; |
| 1014 | } |
| 1015 | #endif /* !__NetBSD__ */ |
| 1016 | |
| 1017 | /* |
| 1018 | * Since we expected to support F_GETLK (and SMB protocol has no such function), |
| 1019 | * it is necessary to use lf_advlock(). It would be nice if this function had |
| 1020 | * a callback mechanism because it will help to improve a level of consistency. |
| 1021 | */ |
| 1022 | int |
| 1023 | smbfs_advlock(void *v) |
| 1024 | { |
| 1025 | struct vop_advlock_args /* { |
| 1026 | struct vnode *a_vp; |
| 1027 | void *a_id; |
| 1028 | int a_op; |
| 1029 | struct flock *a_fl; |
| 1030 | int a_flags; |
| 1031 | } */ *ap = v; |
| 1032 | struct vnode *vp = ap->a_vp; |
| 1033 | struct smbnode *np = VTOSMB(vp); |
| 1034 | struct flock *fl = ap->a_fl; |
| 1035 | struct lwp *l = curlwp; |
| 1036 | struct smb_cred scred; |
| 1037 | u_quad_t size; |
| 1038 | off_t start, end, oadd; |
| 1039 | int error, lkop; |
| 1040 | |
| 1041 | if (vp->v_type == VDIR) { |
| 1042 | /* |
| 1043 | * SMB protocol have no support for directory locking. |
| 1044 | * Although locks can be processed on local machine, I don't |
| 1045 | * think that this is a good idea, because some programs |
| 1046 | * can work wrong assuming directory is locked. So, we just |
| 1047 | * return 'operation not supported'. |
| 1048 | */ |
| 1049 | return EOPNOTSUPP; |
| 1050 | } |
| 1051 | size = np->n_size; |
| 1052 | switch (fl->l_whence) { |
| 1053 | |
| 1054 | case SEEK_SET: |
| 1055 | case SEEK_CUR: |
| 1056 | start = fl->l_start; |
| 1057 | break; |
| 1058 | |
| 1059 | case SEEK_END: |
| 1060 | #ifndef __NetBSD__ |
| 1061 | if (size > OFF_MAX || |
| 1062 | (fl->l_start > 0 && size > OFF_MAX - fl->l_start)) |
| 1063 | return EOVERFLOW; |
| 1064 | #endif |
| 1065 | start = size + fl->l_start; |
| 1066 | break; |
| 1067 | |
| 1068 | default: |
| 1069 | return EINVAL; |
| 1070 | } |
| 1071 | if (start < 0) |
| 1072 | return EINVAL; |
| 1073 | if (fl->l_len < 0) { |
| 1074 | if (start == 0) |
| 1075 | return EINVAL; |
| 1076 | end = start - 1; |
| 1077 | start += fl->l_len; |
| 1078 | if (start < 0) |
| 1079 | return EINVAL; |
| 1080 | } else if (fl->l_len == 0) |
| 1081 | end = -1; |
| 1082 | else { |
| 1083 | oadd = fl->l_len - 1; |
| 1084 | #ifndef __NetBSD__ |
| 1085 | if (oadd > OFF_MAX - start) |
| 1086 | return EOVERFLOW; |
| 1087 | #endif |
| 1088 | end = start + oadd; |
| 1089 | } |
| 1090 | smb_makescred(&scred, l, l ? l->l_cred : NULL); |
| 1091 | switch (ap->a_op) { |
| 1092 | case F_SETLK: |
| 1093 | switch (fl->l_type) { |
| 1094 | case F_WRLCK: |
| 1095 | lkop = SMB_LOCK_EXCL; |
| 1096 | break; |
| 1097 | case F_RDLCK: |
| 1098 | lkop = SMB_LOCK_SHARED; |
| 1099 | break; |
| 1100 | case F_UNLCK: |
| 1101 | lkop = SMB_LOCK_RELEASE; |
| 1102 | break; |
| 1103 | default: |
| 1104 | return EINVAL; |
| 1105 | } |
| 1106 | error = lf_advlock(ap, &np->n_lockf, size); |
| 1107 | if (error) |
| 1108 | break; |
| 1109 | /* |
| 1110 | * The ID we use for smb_lock is passed as PID to SMB |
| 1111 | * server. It MUST agree with PID as setup in basic |
| 1112 | * SMB header in later write requests, otherwise SMB server |
| 1113 | * returns EDEADLK. See also smb_rq_new() on SMB header setup. |
| 1114 | */ |
| 1115 | error = smbfs_smb_lock(np, lkop,(void *)1, start, end, &scred); |
| 1116 | if (error) { |
| 1117 | ap->a_op = F_UNLCK; |
| 1118 | lf_advlock(ap, &np->n_lockf, size); |
| 1119 | } |
| 1120 | break; |
| 1121 | case F_UNLCK: |
| 1122 | lf_advlock(ap, &np->n_lockf, size); |
| 1123 | error = smbfs_smb_lock(np, SMB_LOCK_RELEASE, ap->a_id, start, end, &scred); |
| 1124 | break; |
| 1125 | case F_GETLK: |
| 1126 | error = lf_advlock(ap, &np->n_lockf, size); |
| 1127 | break; |
| 1128 | default: |
| 1129 | return EINVAL; |
| 1130 | } |
| 1131 | |
| 1132 | return error; |
| 1133 | } |
| 1134 | |
| 1135 | static int |
| 1136 | smbfs_pathcheck(struct smbmount *smp, const char *name, int nmlen) |
| 1137 | { |
| 1138 | static const char * const badchars = "*/\\:<>;?" ; |
| 1139 | static const char * const badchars83 = " +|,[]=" ; |
| 1140 | const char *cp; |
| 1141 | int i; |
| 1142 | |
| 1143 | if (SMB_DIALECT(SSTOVC(smp->sm_share)) < SMB_DIALECT_LANMAN2_0) { |
| 1144 | /* |
| 1145 | * Name should conform 8.3 format |
| 1146 | */ |
| 1147 | if (nmlen > 12) |
| 1148 | return (ENAMETOOLONG); |
| 1149 | |
| 1150 | if ((cp = memchr(name, '.', nmlen)) == NULL |
| 1151 | || cp == name || (cp - name) > 8 |
| 1152 | || (cp = memchr(cp + 1, '.', nmlen - (cp - name))) != NULL) |
| 1153 | goto bad; |
| 1154 | |
| 1155 | for (cp = name, i = 0; i < nmlen; i++, cp++) |
| 1156 | if (strchr(badchars83, *cp) != NULL) |
| 1157 | goto bad; |
| 1158 | } |
| 1159 | |
| 1160 | for (cp = name, i = 0; i < nmlen; i++, cp++) |
| 1161 | if (strchr(badchars, *cp) != NULL) |
| 1162 | goto bad; |
| 1163 | |
| 1164 | /* name is fine */ |
| 1165 | return (0); |
| 1166 | |
| 1167 | bad: |
| 1168 | return (ENOENT); |
| 1169 | } |
| 1170 | |
| 1171 | /* |
| 1172 | * Things go even weird without fixed inode numbers... |
| 1173 | */ |
| 1174 | int |
| 1175 | smbfs_lookup(void *v) |
| 1176 | { |
| 1177 | struct vop_lookup_v2_args /* { |
| 1178 | struct vnode *a_dvp; |
| 1179 | struct vnode **a_vpp; |
| 1180 | struct componentname *a_cnp; |
| 1181 | } */ *ap = v; |
| 1182 | struct componentname *cnp = ap->a_cnp; |
| 1183 | struct vnode *dvp = ap->a_dvp; |
| 1184 | struct vnode **vpp = ap->a_vpp; |
| 1185 | struct mount *mp = dvp->v_mount; |
| 1186 | struct smbnode *dnp; |
| 1187 | struct smbfattr fattr; |
| 1188 | struct smb_cred scred; |
| 1189 | const char *name = cnp->cn_nameptr; |
| 1190 | int flags = cnp->cn_flags; |
| 1191 | int nameiop = cnp->cn_nameiop; |
| 1192 | int nmlen = cnp->cn_namelen; |
| 1193 | int error, islastcn, isdot; |
| 1194 | |
| 1195 | /* |
| 1196 | * Check accessiblity of directory. |
| 1197 | */ |
| 1198 | error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred); |
| 1199 | if (error) |
| 1200 | return (error); |
| 1201 | |
| 1202 | if ((cnp->cn_flags & ISLASTCN) && |
| 1203 | (dvp->v_mount->mnt_flag & MNT_RDONLY) && |
| 1204 | (cnp->cn_nameiop == DELETE || cnp->cn_nameiop == RENAME)) |
| 1205 | return (EROFS); |
| 1206 | |
| 1207 | SMBVDEBUG("%d '%.*s' in '%.*s'\n" , nameiop, nmlen, name, |
| 1208 | (int) VTOSMB(dvp)->n_nmlen, VTOSMB(dvp)->n_name); |
| 1209 | |
| 1210 | islastcn = flags & ISLASTCN; |
| 1211 | |
| 1212 | /* |
| 1213 | * Before tediously performing a linear scan of the directory, |
| 1214 | * check the name cache to see if the directory/name pair |
| 1215 | * we are looking for is known already. |
| 1216 | * If the directory/name pair is found in the name cache, |
| 1217 | * we have to ensure the directory has not changed from |
| 1218 | * the time the cache entry has been created. If it has, |
| 1219 | * the cache entry has to be ignored. |
| 1220 | */ |
| 1221 | if (cache_lookup(dvp, cnp->cn_nameptr, cnp->cn_namelen, |
| 1222 | cnp->cn_nameiop, cnp->cn_flags, |
| 1223 | NULL, vpp)) { |
| 1224 | struct vattr vattr; |
| 1225 | struct vnode *newvp; |
| 1226 | bool killit = false; |
| 1227 | |
| 1228 | error = VOP_ACCESS(dvp, VEXEC, cnp->cn_cred); |
| 1229 | if (error != 0) { |
| 1230 | if (*vpp != NULLVP) { |
| 1231 | vrele(*vpp); |
| 1232 | } |
| 1233 | *vpp = NULLVP; |
| 1234 | return error; |
| 1235 | } |
| 1236 | |
| 1237 | if (*vpp == NULLVP) { |
| 1238 | if (!VOP_GETATTR(dvp, &vattr, cnp->cn_cred) |
| 1239 | && vattr.va_mtime.tv_sec == VTOSMB(dvp)->n_nctime) |
| 1240 | return ENOENT; |
| 1241 | cache_purge(dvp); |
| 1242 | VTOSMB(dvp)->n_nctime = 0; |
| 1243 | goto dolookup; |
| 1244 | } |
| 1245 | |
| 1246 | newvp = *vpp; |
| 1247 | if (newvp != dvp) |
| 1248 | vn_lock(newvp, LK_SHARED | LK_RETRY); |
| 1249 | error = VOP_GETATTR(newvp, &vattr, cnp->cn_cred); |
| 1250 | /* |
| 1251 | * If the file type on the server is inconsistent |
| 1252 | * with what it was when we created the vnode, |
| 1253 | * kill the bogus vnode now and fall through to |
| 1254 | * the code below to create a new one with the |
| 1255 | * right type. |
| 1256 | */ |
| 1257 | if (error == 0 && |
| 1258 | ((newvp->v_type == VDIR && |
| 1259 | (VTOSMB(newvp)->n_dosattr & SMB_FA_DIR) == 0) || |
| 1260 | (newvp->v_type == VREG && |
| 1261 | (VTOSMB(newvp)->n_dosattr & SMB_FA_DIR) != 0))) |
| 1262 | killit = true; |
| 1263 | else if (error == 0 |
| 1264 | && vattr.va_ctime.tv_sec == VTOSMB(newvp)->n_ctime) |
| 1265 | { |
| 1266 | if (newvp != dvp) |
| 1267 | VOP_UNLOCK(newvp); |
| 1268 | /* nfsstats.lookupcache_hits++; */ |
| 1269 | return (0); |
| 1270 | } |
| 1271 | |
| 1272 | cache_purge(newvp); |
| 1273 | if (newvp != dvp) { |
| 1274 | if (killit) { |
| 1275 | VOP_UNLOCK(newvp); |
| 1276 | vgone(newvp); |
| 1277 | } else |
| 1278 | vput(newvp); |
| 1279 | } else |
| 1280 | vrele(newvp); |
| 1281 | *vpp = NULLVP; |
| 1282 | } |
| 1283 | |
| 1284 | dolookup: |
| 1285 | |
| 1286 | /* ensure the name is sane */ |
| 1287 | if (nameiop != LOOKUP) { |
| 1288 | error = smbfs_pathcheck(VFSTOSMBFS(mp), cnp->cn_nameptr, |
| 1289 | cnp->cn_namelen); |
| 1290 | if (error) |
| 1291 | return (error); |
| 1292 | } |
| 1293 | |
| 1294 | dnp = VTOSMB(dvp); |
| 1295 | isdot = (nmlen == 1 && name[0] == '.'); |
| 1296 | |
| 1297 | /* |
| 1298 | * entry is not in the cache or has been expired |
| 1299 | */ |
| 1300 | smb_makescred(&scred, curlwp, cnp->cn_cred); |
| 1301 | if (flags & ISDOTDOT) |
| 1302 | error = smbfs_smb_lookup(VTOSMB(dnp->n_parent), NULL, 0, |
| 1303 | &fattr, &scred); |
| 1304 | else |
| 1305 | error = smbfs_smb_lookup(dnp, name, nmlen, &fattr, &scred); |
| 1306 | |
| 1307 | if (error) { |
| 1308 | /* Not found */ |
| 1309 | |
| 1310 | if (error != ENOENT) |
| 1311 | return (error); |
| 1312 | |
| 1313 | /* |
| 1314 | * Handle RENAME or CREATE case... |
| 1315 | */ |
| 1316 | if ((nameiop == CREATE || nameiop == RENAME) && islastcn) { |
| 1317 | /* |
| 1318 | * Access for write is interpreted as allowing |
| 1319 | * creation of files in the directory. |
| 1320 | */ |
| 1321 | error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); |
| 1322 | if (error) |
| 1323 | return (error); |
| 1324 | |
| 1325 | return (EJUSTRETURN); |
| 1326 | } |
| 1327 | |
| 1328 | /* |
| 1329 | * Insert name into cache (as non-existent) if appropriate. |
| 1330 | */ |
| 1331 | if (nameiop != CREATE) |
| 1332 | cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen, |
| 1333 | cnp->cn_flags); |
| 1334 | |
| 1335 | return (ENOENT); |
| 1336 | } |
| 1337 | |
| 1338 | /* Found */ |
| 1339 | |
| 1340 | /* Handle RENAME case... */ |
| 1341 | if (nameiop == RENAME && islastcn) { |
| 1342 | error = VOP_ACCESS(dvp, VWRITE, cnp->cn_cred); |
| 1343 | if (error) |
| 1344 | return (error); |
| 1345 | |
| 1346 | if (isdot) |
| 1347 | return (EISDIR); |
| 1348 | error = smbfs_nget(mp, dvp, name, nmlen, &fattr, vpp); |
| 1349 | if (error) |
| 1350 | return (error); |
| 1351 | return (0); |
| 1352 | } |
| 1353 | |
| 1354 | if (isdot) { |
| 1355 | vref(dvp); |
| 1356 | *vpp = dvp; |
| 1357 | error = 0; |
| 1358 | } else { |
| 1359 | error = smbfs_nget(mp, dvp, name, nmlen, |
| 1360 | ((flags & ISDOTDOT) ? NULL : &fattr), vpp); |
| 1361 | } |
| 1362 | if (error) |
| 1363 | return error; |
| 1364 | |
| 1365 | if (cnp->cn_nameiop != DELETE || !islastcn) { |
| 1366 | VTOSMB(*vpp)->n_ctime = VTOSMB(*vpp)->n_mtime.tv_sec; |
| 1367 | cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen, |
| 1368 | cnp->cn_flags); |
| 1369 | #ifdef notdef |
| 1370 | } else if (error == ENOENT && cnp->cn_nameiop != CREATE) { |
| 1371 | VTOSMB(*vpp)->n_nctime = VTOSMB(*vpp)->n_mtime.tv_sec; |
| 1372 | cache_enter(dvp, *vpp, cnp->cn_nameptr, cnp->cn_namelen, |
| 1373 | cnp->cn_flags); |
| 1374 | #endif |
| 1375 | } |
| 1376 | |
| 1377 | return (0); |
| 1378 | } |
| 1379 | |