source3/modules/onefs_open.c

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  *
   4  * This file began with some code from source3/smbd/open.c and has been
   5  * modified it work with ifs_createfile.
   6  *
   7  * ifs_createfile is a CIFS-specific syscall for opening/files and
   8  * directories.  It adds support for:
   9  *    - Full in-kernel access checks using a windows access_mask
  10  *    - Cluster-coherent share mode locks
  11  *    - Cluster-coherent oplocks
  12  *    - Streams
  13  *    - Setting security descriptors at create time
  14  *    - Setting dos_attributes at create time
  15  *
  16  * Copyright (C) Andrew Tridgell 1992-1998
  17  * Copyright (C) Jeremy Allison 2001-2004
  18  * Copyright (C) Volker Lendecke 2005
  19  * Copyright (C) Tim Prouty, 2008
  20  *
  21  * This program is free software; you can redistribute it and/or modify
  22  * it under the terms of the GNU General Public License as published by
  23  * the Free Software Foundation; either version 3 of the License, or
  24  * (at your option) any later version.
  25  *
  26  * This program is distributed in the hope that it will be useful,
  27  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  28  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  29  * GNU General Public License for more details.
  30  *
  31  * You should have received a copy of the GNU General Public License
  32  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  33  */
  34
  35 #include "includes.h"
  36 #include "smbd/smbd.h"
  37 #include "onefs.h"
  38 #include "onefs_config.h"
  39 #include "oplock_onefs.h"
  40 #include "smbd/globals.h"
  41
  42 extern const struct generic_mapping file_generic_mapping;
  43
  44 struct onefs_fsp_data {
  45         uint64_t oplock_callback_id;
  46 };
  47
  48 static NTSTATUS onefs_create_file_unixpath(connection_struct *conn,
  49                               struct smb_request *req,
  50                               struct smb_filename *smb_fname,
  51                               uint32_t access_mask,
  52                               uint32_t share_access,
  53                               uint32_t create_disposition,
  54                               uint32_t create_options,
  55                               uint32_t file_attributes,
  56                               uint32_t oplock_request,
  57                               uint64_t allocation_size,
  58                               uint32_t private_flags,
  59                               struct security_descriptor *sd,
  60                               struct ea_list *ea_list,
  61                               files_struct **result,
  62                               int *pinfo,
  63                               struct onefs_fsp_data *fsp_data);
  64
  65 /****************************************************************************
  66  Open a file.
  67 ****************************************************************************/
  68
  69 static NTSTATUS onefs_open_file(files_struct *fsp,
  70                                 connection_struct *conn,
  71                                 struct smb_request *req,
  72                                 const char *parent_dir,
  73                                 struct smb_filename *smb_fname,
  74                                 int flags,
  75                                 mode_t unx_mode,
  76                                 uint32 access_mask,
  77                                 uint32 open_access_mask,
  78                                 int oplock_request,
  79                                 uint64 id,
  80                                 uint32 share_access,
  81                                 uint32 create_options,
  82                                 uint32_t new_dos_attributes,
  83                                 struct security_descriptor *sd,
  84                                 int *granted_oplock)
  85 {
  86         struct smb_filename *smb_fname_onefs = NULL;
  87         NTSTATUS status = NT_STATUS_OK;
  88         int accmode = (flags & O_ACCMODE);
  89         int local_flags = flags;
  90         bool file_existed = VALID_STAT(smb_fname->st);
  91         const char *wild;
  92         int base_fd = -1;
  93
  94         fsp->fh->fd = -1;
  95         errno = EPERM;
  96
  97         /* Check permissions */
  98
  99         /*
 100          * This code was changed after seeing a client open request
 101          * containing the open mode of (DENY_WRITE/read-only) with
 102          * the 'create if not exist' bit set. The previous code
 103          * would fail to open the file read only on a read-only share
 104          * as it was checking the flags parameter  directly against O_RDONLY,
 105          * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
 106          * JRA.
 107          */
 108
 109         if (!CAN_WRITE(conn)) {
 110                 /* It's a read-only share - fail if we wanted to write. */
 111                 if(accmode != O_RDONLY) {
 112                         DEBUG(3, ("Permission denied opening %s\n",
 113                                   smb_fname_str_dbg(smb_fname)));
 114                         return NT_STATUS_ACCESS_DENIED;
 115                 } else if(flags & O_CREAT) {
 116                         /* We don't want to write - but we must make sure that
 117                            O_CREAT doesn't create the file if we have write
 118                            access into the directory.
 119                         */
 120                         flags &= ~O_CREAT;
 121                         local_flags &= ~O_CREAT;
 122                 }
 123         }
 124
 125         /*
 126          * This little piece of insanity is inspired by the
 127          * fact that an NT client can open a file for O_RDONLY,
 128          * but set the create disposition to FILE_EXISTS_TRUNCATE.
 129          * If the client *can* write to the file, then it expects to
 130          * truncate the file, even though it is opening for readonly.
 131          * Quicken uses this stupid trick in backup file creation...
 132          * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
 133          * for helping track this one down. It didn't bite us in 2.0.x
 134          * as we always opened files read-write in that release. JRA.
 135          */
 136
 137         if ((accmode == O_RDONLY) && ((flags & O_TRUNC) == O_TRUNC)) {
 138                 DEBUG(10,("onefs_open_file: truncate requested on read-only "
 139                           "open for file %s\n", smb_fname_str_dbg(smb_fname)));
 140                 local_flags = (flags & ~O_ACCMODE)|O_RDWR;
 141         }
 142
 143 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
 144         /*
 145          * We would block on opening a FIFO with no one else on the
 146          * other end. Do what we used to do and add O_NONBLOCK to the
 147          * open flags. JRA.
 148          */
 149
 150         if (file_existed && S_ISFIFO(smb_fname->st.st_ex_mode)) {
 151                 local_flags |= O_NONBLOCK;
 152         }
 153 #endif
 154
 155         /* Don't create files with Microsoft wildcard characters. */
 156         if (fsp->base_fsp) {
 157                 /*
 158                  * wildcard characters are allowed in stream names
 159                  * only test the basefilename
 160                  */
 161                 wild = fsp->base_fsp->fsp_name->base_name;
 162         } else {
 163                 wild = smb_fname->base_name;
 164         }
 165         if ((local_flags & O_CREAT) && !file_existed &&
 166             ms_has_wild(wild))  {
 167                 /*
 168                  * XXX: may need to remvoe this return...
 169                  *
 170                  * We dont think this check needs to exist. All it does is
 171                  * block creating files with Microsoft wildcards, which is
 172                  * fine if the creation originated from NFS or locally and
 173                  * then was copied via Samba.
 174                  */
 175                 DEBUG(1, ("onefs_open_file: creating file with wildcard: %s\n",
 176                           smb_fname_str_dbg(smb_fname)));
 177                 return NT_STATUS_OBJECT_NAME_INVALID;
 178         }
 179
 180         /* Actually do the open */
 181
 182 #ifdef O_NOFOLLOW
 183         /*
 184          * Never follow symlinks on a POSIX client. The
 185          * client should be doing this.
 186          */
 187
 188         if (fsp->posix_open || !lp_symlinks(SNUM(conn))) {
 189                 flags |= O_NOFOLLOW;
 190         }
 191 #endif
 192         /* Setup a onefs-style smb_fname struct. */
 193         status = onefs_stream_prep_smb_fname(talloc_tos(), smb_fname,
 194                                              &smb_fname_onefs);
 195         if (!NT_STATUS_IS_OK(status)) {
 196                 return status;
 197         }
 198
 199         /* If it's a stream pass in the base_fd */
 200         if ((conn->fs_capabilities & FILE_NAMED_STREAMS) &&
 201             is_ntfs_stream_smb_fname(smb_fname_onefs)) {
 202                 SMB_ASSERT(fsp->base_fsp);
 203
 204                 DEBUG(10, ("Opening a stream: base=%s(%d), stream=%s\n",
 205                            smb_fname_onefs->base_name, fsp->base_fsp->fh->fd,
 206                            smb_fname_onefs->stream_name));
 207
 208                 base_fd = fsp->base_fsp->fh->fd;
 209         }
 210
 211         fsp->fh->fd = onefs_sys_create_file(conn,
 212                                             base_fd,
 213                                             smb_fname_onefs->stream_name != NULL ?
 214                                             smb_fname_onefs->stream_name :
 215                                             smb_fname_onefs->base_name,
 216                                             access_mask,
 217                                             open_access_mask,
 218                                             share_access,
 219                                             create_options,
 220                                             flags,
 221                                             unx_mode,
 222                                             oplock_request,
 223                                             id,
 224                                             sd,
 225                                             new_dos_attributes,
 226                                             granted_oplock);
 227         TALLOC_FREE(smb_fname_onefs);
 228
 229         if (fsp->fh->fd == -1) {
 230                 if (errno == EMFILE) {
 231                         static time_t last_warned = 0L;
 232
 233                         if (time((time_t *) NULL) > last_warned) {
 234                                 DEBUG(0, ("Too many open files, unable "
 235                                           "to open more!  smbd's max "
 236                                           "open files = %d, also check "
 237                                           "sysctl kern.maxfiles and "
 238                                           "sysctl kern.maxfilesperproc\n",
 239                                           lp_max_open_files()));
 240                                 last_warned = time((time_t *) NULL);
 241                         }
 242                 }
 243
 244                 status = map_nt_error_from_unix(errno);
 245                 DEBUG(3, ("Error opening file %s (%s) (local_flags=%d) "
 246                           "(flags=%d)\n", smb_fname_str_dbg(smb_fname),
 247                           strerror(errno), local_flags, flags));
 248                 return status;
 249         }
 250
 251         if ((local_flags & O_CREAT) && !file_existed) {
 252
 253                 /* Inherit the ACL if required */
 254                 if (lp_inherit_perms(SNUM(conn))) {
 255                         inherit_access_posix_acl(conn, parent_dir,
 256                             smb_fname->base_name, unx_mode);
 257                 }
 258
 259                 /* Change the owner if required. */
 260                 if (lp_inherit_owner(SNUM(conn))) {
 261                         change_file_owner_to_parent(conn, parent_dir,
 262                             fsp);
 263                 }
 264
 265                 notify_fname(conn, NOTIFY_ACTION_ADDED,
 266                     FILE_NOTIFY_CHANGE_FILE_NAME, smb_fname->base_name);
 267         }
 268
 269         if (!file_existed) {
 270                 int ret;
 271
 272                 if (fsp->fh->fd == -1) {
 273                         ret = SMB_VFS_STAT(conn, smb_fname);
 274                 } else {
 275                         ret = SMB_VFS_FSTAT(fsp, &smb_fname->st);
 276                         /* If we have an fd, this stat should succeed. */
 277                         if (ret == -1) {
 278                                 DEBUG(0, ("Error doing fstat on open file %s "
 279                                           "(%s)\n",
 280                                           smb_fname_str_dbg(smb_fname),
 281                                           strerror(errno) ));
 282                         }
 283                 }
 284
 285                 /* For a non-io open, this stat failing means file not found. JRA */
 286                 if (ret == -1) {
 287                         status = map_nt_error_from_unix(errno);
 288                         fd_close(fsp);
 289                         return status;
 290                 }
 291         }
 292
 293         /*
 294          * POSIX allows read-only opens of directories. We don't
 295          * want to do this (we use a different code path for this)
 296          * so catch a directory open and return an EISDIR. JRA.
 297          */
 298
 299         if(S_ISDIR(smb_fname->st.st_ex_mode)) {
 300                 fd_close(fsp);
 301                 errno = EISDIR;
 302                 return NT_STATUS_FILE_IS_A_DIRECTORY;
 303         }
 304
 305         fsp->mode = smb_fname->st.st_ex_mode;
 306         fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
 307         fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
 308         fsp->file_pid = req ? req->smbpid : 0;
 309         fsp->can_lock = True;
 310         fsp->can_read = (access_mask & (FILE_READ_DATA)) ? True : False;
 311         if (!CAN_WRITE(conn)) {
 312                 fsp->can_write = False;
 313         } else {
 314                 fsp->can_write = (access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ?
 315                         True : False;
 316         }
 317         fsp->print_file = NULL;
 318         fsp->modified = False;
 319         fsp->sent_oplock_break = NO_BREAK_SENT;
 320         fsp->is_directory = False;
 321         if (conn->aio_write_behind_list &&
 322             is_in_path(smb_fname->base_name, conn->aio_write_behind_list,
 323                        conn->case_sensitive)) {
 324                 fsp->aio_write_behind = True;
 325         }
 326
 327         fsp->wcp = NULL; /* Write cache pointer. */
 328
 329         DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
 330                  conn->session_info->unix_name,
 331                  smb_fname_str_dbg(smb_fname),
 332                  BOOLSTR(fsp->can_read), BOOLSTR(fsp->can_write),
 333                  conn->num_files_open));
 334
 335         errno = 0;
 336         return NT_STATUS_OK;
 337 }
 338
 339 /****************************************************************************
 340  Handle the 1 second delay in returning a SHARING_VIOLATION error.
 341 ****************************************************************************/
 342
 343 static void defer_open(struct share_mode_lock *lck,
 344                        struct timeval request_time,
 345                        struct timeval timeout,
 346                        struct smb_request *req,
 347                        struct deferred_open_record *state)
 348 {
 349         int i;
 350
 351         /* Paranoia check */
 352
 353         for (i=0; i<lck->num_share_modes; i++) {
 354                 struct share_mode_entry *e = &lck->share_modes[i];
 355
 356                 if (!is_deferred_open_entry(e)) {
 357                         continue;
 358                 }
 359
 360                 if (procid_is_me(&e->pid) && (e->op_mid == req->mid)) {
 361                         DEBUG(0, ("Trying to defer an already deferred "
 362                                 "request: mid=%llu, exiting\n",
 363                                 (unsigned long long)req->mid));
 364                         exit_server("attempt to defer a deferred request");
 365                 }
 366         }
 367
 368         /* End paranoia check */
 369
 370         DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
 371                   "open entry for mid %llu\n",
 372                   (unsigned int)request_time.tv_sec,
 373                   (unsigned int)request_time.tv_usec,
 374                   (unsigned long long)req->mid));
 375
 376         if (!push_deferred_open_message_smb(req, request_time, timeout,
 377                                        state->id, (char *)state, sizeof(*state))) {
 378                 exit_server("push_deferred_open_message_smb failed");
 379         }
 380         add_deferred_open(lck, req->mid, request_time, state->id);
 381 }
 382
 383 static void schedule_defer_open(struct share_mode_lock *lck,
 384                                 struct timeval request_time,
 385                                 struct smb_request *req)
 386 {
 387         struct deferred_open_record state;
 388
 389         /* This is a relative time, added to the absolute
 390            request_time value to get the absolute timeout time.
 391            Note that if this is the second or greater time we enter
 392            this codepath for this particular request mid then
 393            request_time is left as the absolute time of the *first*
 394            time this request mid was processed. This is what allows
 395            the request to eventually time out. */
 396
 397         struct timeval timeout;
 398
 399         /* Normally the smbd we asked should respond within
 400          * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
 401          * the client did, give twice the timeout as a safety
 402          * measure here in case the other smbd is stuck
 403          * somewhere else. */
 404
 405         /*
 406          * On OneFS, the kernel will always send an oplock_revoked message
 407          * before this timeout is hit.
 408          */
 409         timeout = timeval_set(OPLOCK_BREAK_TIMEOUT*10, 0);
 410
 411         /* Nothing actually uses state.delayed_for_oplocks
 412            but it's handy to differentiate in debug messages
 413            between a 30 second delay due to oplock break, and
 414            a 1 second delay for share mode conflicts. */
 415
 416         state.delayed_for_oplocks = True;
 417         state.failed = false;
 418         state.id = lck->id;
 419
 420         if (!request_timed_out(request_time, timeout)) {
 421                 defer_open(lck, request_time, timeout, req, &state);
 422         } else {
 423                 /* A delayed-for-oplocks deferred open timing out should only
 424                  * happen if there is a bug or extreme load, since we set the
 425                  * timeout to 300 seconds. */
 426                 DEBUG(0, ("Deferred open timeout! request_time=%d.%d, "
 427                     "mid=%d\n", request_time.tv_sec, request_time.tv_usec,
 428                     req->mid));
 429         }
 430 }
 431
 432 /****************************************************************************
 433  Open a file with a share mode.  Passed in an already created files_struct.
 434 ****************************************************************************/
 435 NTSTATUS onefs_open_file_ntcreate(connection_struct *conn,
 436                                   struct smb_request *req,
 437                                   struct smb_filename *smb_fname,
 438                                   uint32 access_mask,
 439                                   uint32 share_access,
 440                                   uint32 create_disposition,
 441                                   uint32 create_options,
 442                                   uint32 new_dos_attributes,
 443                                   int oplock_request,
 444                                   uint32_t private_flags,
 445                                   struct security_descriptor *sd,
 446                                   files_struct *fsp,
 447                                   int *pinfo,
 448                                   struct onefs_fsp_data *fsp_data)
 449 {
 450         int flags=0;
 451         int flags2=0;
 452         bool file_existed = VALID_STAT(smb_fname->st);
 453         bool def_acl = False;
 454         bool posix_open = False;
 455         bool new_file_created = False;
 456         bool clear_ads = False;
 457         struct file_id id;
 458         mode_t new_unx_mode = (mode_t)0;
 459         mode_t unx_mode = (mode_t)0;
 460         int info;
 461         uint32 existing_dos_attributes = 0;
 462         struct timeval request_time = timeval_zero();
 463         struct share_mode_lock *lck = NULL;
 464         uint32 open_access_mask = access_mask;
 465         NTSTATUS status;
 466         int ret_flock;
 467         char *parent_dir;
 468         int granted_oplock;
 469         uint64_t oplock_callback_id = 0;
 470         uint32 createfile_attributes = 0;
 471
 472         ZERO_STRUCT(id);
 473
 474         if (conn->printer) {
 475                 /*
 476                  * Printers are handled completely differently.
 477                  * Most of the passed parameters are ignored.
 478                  */
 479
 480                 if (pinfo) {
 481                         *pinfo = FILE_WAS_CREATED;
 482                 }
 483
 484                 DEBUG(10, ("onefs_open_file_ntcreate: printer open fname=%s\n",
 485                            smb_fname_str_dbg(smb_fname)));
 486
 487                 return print_spool_open(fsp, smb_fname->base_name,
 488                                         req->vuid);
 489         }
 490
 491         if (!parent_dirname(talloc_tos(), smb_fname->base_name, &parent_dir,
 492                             NULL)) {
 493                 return NT_STATUS_NO_MEMORY;
 494         }
 495
 496         if (new_dos_attributes & FILE_FLAG_POSIX_SEMANTICS) {
 497                 posix_open = True;
 498                 unx_mode = (mode_t)(new_dos_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
 499                 new_dos_attributes = 0;
 500         } else {
 501                 /* We add aARCH to this as this mode is only used if the file is
 502                  * created new. */
 503                 unx_mode = unix_mode(conn, new_dos_attributes | aARCH,
 504                                      smb_fname, parent_dir);
 505         }
 506
 507         DEBUG(10,("onefs_open_file_ntcreate: fname=%s, dos_attrs=0x%x "
 508                   "access_mask=0x%x share_access=0x%x "
 509                   "create_disposition = 0x%x create_options=0x%x "
 510                   "unix mode=0%o oplock_request=0x%x\n",
 511                   smb_fname_str_dbg(smb_fname), new_dos_attributes,
 512                   access_mask, share_access, create_disposition,
 513                   create_options, unx_mode, oplock_request));
 514
 515         /*
 516          * Any non-stat-only open has the potential to contend oplocks, which
 517          * means to avoid blocking in the kernel (which is unacceptable), the
 518          * open must be deferred.  In order to defer opens, req must not be
 519          * NULL.  The known cases of calling with a NULL req:
 520          *
 521          *   1. Open the base file of a stream: Always done stat-only
 522          *
 523          *   2. open_file_fchmod(), which is called from 3 places:
 524          *      A. try_chown: Posix acls only. Never called on onefs.
 525          *      B. set_ea_dos_attributes: Can't be called from onefs, because
 526          *         SMB_VFS_SETXATTR return ENOSYS.
 527          *      C. file_set_dos_mode: This would only happen if the "dos
 528          *         filemode" smb.conf parameter is set to yes.  We ship with
 529          *         it off, but if a customer were to turn it on it would be
 530          *         bad.
 531          */
 532         if (req == NULL && !is_stat_open(access_mask) &&
 533             !is_ntfs_stream_smb_fname(smb_fname)) {
 534                 smb_panic("NULL req on a non-stat-open!");
 535         }
 536
 537         if ((req == NULL) && ((oplock_request & INTERNAL_OPEN_ONLY) == 0)) {
 538                 DEBUG(0, ("No smb request but not an internal only open!\n"));
 539                 return NT_STATUS_INTERNAL_ERROR;
 540         }
 541
 542         /*
 543          * Only non-internal opens can be deferred at all
 544          */
 545
 546         if (req) {
 547                 void *ptr;
 548                 if (get_deferred_open_message_state(req,
 549                                 &request_time,
 550                                 &ptr)) {
 551                         struct deferred_open_record *state = (struct deferred_open_record *)ptr;
 552
 553                         /* Remember the absolute time of the original
 554                            request with this mid. We'll use it later to
 555                            see if this has timed out. */
 556
 557                         /* Remove the deferred open entry under lock. */
 558                         remove_deferred_open_entry(state->id, req->mid);
 559
 560                         /* Ensure we don't reprocess this message. */
 561                         remove_deferred_open_message_smb(req->mid);
 562
 563                         /*
 564                          * When receiving a semlock_async_failure message, the
 565                          * deferred open will be marked as "failed". Returning
 566                          * INTERNAL_ERROR.
 567                          */
 568                         if (state->failed) {
 569                                 DEBUG(0, ("onefs_open_file_ntcreate: "
 570                                           "semlock_async_failure detected!\n"));
 571                                 return NT_STATUS_INTERNAL_ERROR;
 572                         }
 573                 }
 574         }
 575
 576         status = check_name(conn, smb_fname->base_name);
 577         if (!NT_STATUS_IS_OK(status)) {
 578                 return status;
 579         }
 580
 581         if (!posix_open) {
 582                 new_dos_attributes &= SAMBA_ATTRIBUTES_MASK;
 583                 if (file_existed) {
 584                         existing_dos_attributes = dos_mode(conn, smb_fname);
 585                 }
 586         }
 587
 588         /* Setup dos_attributes to be set by ifs_createfile */
 589         if (lp_store_dos_attributes(SNUM(conn))) {
 590                 createfile_attributes = (new_dos_attributes | aARCH) &
 591                     ~(FILE_ATTRIBUTE_NONINDEXED | FILE_ATTRIBUTE_COMPRESSED);
 592         }
 593
 594         /* Ignore oplock requests if oplocks are disabled. */
 595         if (!lp_oplocks(SNUM(conn)) ||
 596             IS_VETO_OPLOCK_PATH(conn, smb_fname->base_name)) {
 597                 /* Mask off everything except the private Samba bits. */
 598                 oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
 599         }
 600
 601         /* this is for OS/2 long file names - say we don't support them */
 602         if (!lp_posix_pathnames() && strstr(smb_fname->base_name,".+,;=[].")) {
 603                 /* OS/2 Workplace shell fix may be main code stream in a later
 604                  * release. */
 605                 DEBUG(5,("onefs_open_file_ntcreate: OS/2 long filenames are "
 606                           "not supported.\n"));
 607                 if (use_nt_status()) {
 608                         return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 609                 }
 610                 return NT_STATUS_DOS(ERRDOS, ERRcannotopen);
 611         }
 612
 613         switch( create_disposition ) {
 614                 /*
 615                  * Currently we're using FILE_SUPERSEDE as the same as
 616                  * FILE_OVERWRITE_IF but they really are
 617                  * different. FILE_SUPERSEDE deletes an existing file
 618                  * (requiring delete access) then recreates it.
 619                  */
 620                 case FILE_SUPERSEDE:
 621                         /**
 622                          * @todo: Clear all file attributes?
 623                          * http://www.osronline.com/article.cfm?article=302
 624                          * create if not exist, trunc if exist
 625                          *
 626                          * If file exists replace/overwrite. If file doesn't
 627                          * exist create.
 628                          */
 629                         flags2 |= (O_CREAT | O_TRUNC);
 630                         clear_ads = true;
 631                         break;
 632
 633                 case FILE_OVERWRITE_IF:
 634                         /* If file exists replace/overwrite. If file doesn't
 635                          * exist create. */
 636                         flags2 |= (O_CREAT | O_TRUNC);
 637                         clear_ads = true;
 638                         break;
 639
 640                 case FILE_OPEN:
 641                         /* If file exists open. If file doesn't exist error. */
 642                         if (!file_existed) {
 643                                 DEBUG(5,("onefs_open_file_ntcreate: FILE_OPEN "
 644                                          "requested for file %s and file "
 645                                          "doesn't exist.\n",
 646                                          smb_fname_str_dbg(smb_fname)));
 647                                 errno = ENOENT;
 648                                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 649                         }
 650                         break;
 651
 652                 case FILE_OVERWRITE:
 653                         /* If file exists overwrite. If file doesn't exist
 654                          * error. */
 655                         if (!file_existed) {
 656                                 DEBUG(5, ("onefs_open_file_ntcreate: "
 657                                           "FILE_OVERWRITE requested for file "
 658                                           "%s and file doesn't exist.\n",
 659                                           smb_fname_str_dbg(smb_fname)));
 660                                 errno = ENOENT;
 661                                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 662                         }
 663                         flags2 |= O_TRUNC;
 664                         clear_ads = true;
 665                         break;
 666
 667                 case FILE_CREATE:
 668                         /* If file exists error. If file doesn't exist
 669                          * create. */
 670                         if (file_existed) {
 671                                 DEBUG(5, ("onefs_open_file_ntcreate: "
 672                                           "FILE_CREATE requested for file %s "
 673                                           "and file already exists.\n",
 674                                           smb_fname_str_dbg(smb_fname)));
 675                                 if (S_ISDIR(smb_fname->st.st_ex_mode)) {
 676                                         errno = EISDIR;
 677                                 } else {
 678                                         errno = EEXIST;
 679                                 }
 680                                 return map_nt_error_from_unix(errno);
 681                         }
 682                         flags2 |= (O_CREAT|O_EXCL);
 683                         break;
 684
 685                 case FILE_OPEN_IF:
 686                         /* If file exists open. If file doesn't exist
 687                          * create. */
 688                         flags2 |= O_CREAT;
 689                         break;
 690
 691                 default:
 692                         return NT_STATUS_INVALID_PARAMETER;
 693         }
 694
 695         /* Match attributes on file exists and overwrite. */
 696         if (!posix_open && file_existed &&
 697             ((create_disposition == FILE_OVERWRITE) ||
 698                 (create_disposition == FILE_OVERWRITE_IF))) {
 699                 if (!open_match_attributes(conn, existing_dos_attributes,
 700                                            new_dos_attributes,
 701                                            smb_fname->st.st_ex_mode,
 702                                            unx_mode, &new_unx_mode)) {
 703                         DEBUG(5, ("onefs_open_file_ntcreate: attributes "
 704                                   "missmatch for file %s (%x %x) (0%o, 0%o)\n",
 705                                   smb_fname_str_dbg(smb_fname),
 706                                   existing_dos_attributes,
 707                                   new_dos_attributes,
 708                                   (unsigned int)smb_fname->st.st_ex_mode,
 709                                   (unsigned int)unx_mode ));
 710                         errno = EACCES;
 711                         return NT_STATUS_ACCESS_DENIED;
 712                 }
 713         }
 714
 715         /*
 716          * OneFS understands MAXIMUM_ALLOWED_ACCESS, so only hack the
 717          * access_mask, but leave the MAA for the actual open in
 718          * open_access_mask.
 719          */
 720         open_access_mask = access_mask;
 721         if (open_access_mask & MAXIMUM_ALLOWED_ACCESS) {
 722                 access_mask |= FILE_GENERIC_ALL;
 723         }
 724
 725         /* Convert GENERIC bits to specific bits. */
 726         se_map_generic(&access_mask, &file_generic_mapping);
 727         se_map_generic(&open_access_mask, &file_generic_mapping);
 728
 729         if ((flags2 & O_TRUNC) || (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
 730                 /* This will cause oplock breaks. */
 731                 open_access_mask |= FILE_WRITE_DATA;
 732         }
 733
 734         DEBUG(10, ("onefs_open_file_ntcreate: fname=%s, after mapping "
 735                    "open_access_mask=%#x, access_mask=0x%x\n",
 736                    smb_fname_str_dbg(smb_fname), open_access_mask,
 737                    access_mask));
 738
 739         /*
 740          * Note that we ignore the append flag as append does not
 741          * mean the same thing under DOS and Unix.
 742          */
 743
 744         if ((access_mask & (FILE_WRITE_DATA | FILE_APPEND_DATA)) ||
 745             (oplock_request & FORCE_OPLOCK_BREAK_TO_NONE)) {
 746
 747                 /*
 748                  * DENY_DOS opens are always underlying read-write on the
 749                  * file handle, no matter what the requested access mask
 750                  * says. Stock samba just sets the flags, but since
 751                  * ifs_createfile uses the access_mask, it must be updated as
 752                  * well.  This allows BASE-DENY* to pass.
 753                  */
 754                 if (create_options & NTCREATEX_OPTIONS_PRIVATE_DENY_DOS) {
 755
 756                         DEBUG(10,("onefs_open_file_ntcreate: deny_dos: "
 757                                   "Adding O_RDWR to flags "
 758                                   "(0x%x) and some READ bits to "
 759                                   "open_access_mask (0x%x)\n",
 760                                   flags, open_access_mask));
 761
 762                         flags = O_RDWR;
 763                         open_access_mask |= (FILE_READ_ATTRIBUTES |
 764                             FILE_READ_DATA | FILE_READ_EA | FILE_EXECUTE);
 765
 766                 } else if (access_mask & (FILE_READ_ATTRIBUTES |
 767                                FILE_READ_DATA |
 768                                FILE_READ_EA |
 769                                FILE_EXECUTE)) {
 770                         flags = O_RDWR;
 771                 } else {
 772                         flags = O_WRONLY;
 773                 }
 774         } else {
 775                 flags = O_RDONLY;
 776         }
 777
 778         /* Currently we only look at FILE_WRITE_THROUGH for create options. */
 779 #if defined(O_SYNC)
 780         if ((create_options & FILE_WRITE_THROUGH) &&
 781             lp_strict_sync(SNUM(conn))) {
 782                 flags2 |= O_SYNC;
 783         }
 784 #endif /* O_SYNC */
 785
 786         if (posix_open && (access_mask & FILE_APPEND_DATA)) {
 787                 flags2 |= O_APPEND;
 788         }
 789
 790         if (!posix_open && !CAN_WRITE(conn)) {
 791                 /*
 792                  * We should really return a permission denied error if either
 793                  * O_CREAT or O_TRUNC are set, but for compatibility with
 794                  * older versions of Samba we just AND them out.
 795                  */
 796                 flags2 &= ~(O_CREAT|O_TRUNC);
 797
 798                 /* Deny DELETE_ACCESS explicitly if the share is read only. */
 799                 if (access_mask & DELETE_ACCESS) {
 800                         return map_nt_error_from_unix(EACCES);
 801                 }
 802         }
 803
 804         /* Ensure we can't write on a read-only share or file. */
 805         if (flags != O_RDONLY && file_existed &&
 806             (!CAN_WRITE(conn) || IS_DOS_READONLY(existing_dos_attributes))) {
 807                 DEBUG(5, ("onefs_open_file_ntcreate: write access requested "
 808                           "for file %s on read only %s\n",
 809                           smb_fname_str_dbg(smb_fname),
 810                           !CAN_WRITE(conn) ? "share" : "file" ));
 811                 errno = EACCES;
 812                 return NT_STATUS_ACCESS_DENIED;
 813         }
 814
 815         DEBUG(10, ("fsp = %p\n", fsp));
 816
 817         fsp->share_access = share_access;
 818         fsp->fh->private_options = private_flags;
 819         fsp->access_mask = open_access_mask; /* We change this to the
 820                                               * requested access_mask after
 821                                               * the open is done. */
 822         fsp->posix_open = posix_open;
 823
 824         /* Ensure no SAMBA_PRIVATE bits can be set. */
 825         fsp->oplock_type = (oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK);
 826
 827         if (timeval_is_zero(&request_time)) {
 828                 request_time = fsp->open_time;
 829         }
 830
 831         if (file_existed) {
 832                 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
 833                 id = vfs_file_id_from_sbuf(conn, &smb_fname->st);
 834
 835                 lck = get_share_mode_lock(talloc_tos(), id,
 836                                           conn->connectpath,
 837                                           smb_fname, &old_write_time);
 838
 839                 if (lck == NULL) {
 840                         DEBUG(0, ("Could not get share mode lock\n"));
 841                         return NT_STATUS_SHARING_VIOLATION;
 842                 }
 843
 844                 if (lck->delete_on_close) {
 845                         /* DELETE_PENDING is not deferred for a second */
 846                         TALLOC_FREE(lck);
 847                         return NT_STATUS_DELETE_PENDING;
 848                 }
 849         }
 850
 851         SMB_ASSERT(!file_existed || (lck != NULL));
 852
 853         /*
 854          * Ensure we pay attention to default ACLs on directories.  May be
 855          * neccessary depending on ACL policies.
 856          */
 857         if ((flags2 & O_CREAT) && lp_inherit_acls(SNUM(conn)) &&
 858             (def_acl = directory_has_default_acl(conn, parent_dir))) {
 859                 unx_mode = 0777;
 860         }
 861
 862         DEBUG(4,("calling onefs_open_file with flags=0x%X flags2=0x%X "
 863                  "mode=0%o, access_mask = 0x%x, open_access_mask = 0x%x\n",
 864                  (unsigned int)flags, (unsigned int)flags2,
 865                  (unsigned int)unx_mode, (unsigned int)access_mask,
 866                  (unsigned int)open_access_mask));
 867
 868         /*
 869          * Since the open is guaranteed to be stat only if req == NULL, a
 870          * callback record is only needed if req != NULL.
 871          */
 872         if (req) {
 873                 SMB_ASSERT(fsp_data);
 874                 oplock_callback_id = onefs_oplock_wait_record(req->mid);
 875                 if (oplock_callback_id == 0) {
 876                         return NT_STATUS_NO_MEMORY;
 877                 }
 878         } else {
 879                 /*
 880                  * It is also already asserted it's either a stream or a
 881                  * stat-only open at this point.
 882                  */
 883                 SMB_ASSERT(fsp->oplock_type == NO_OPLOCK);
 884
 885                 /* The kernel and Samba's version of stat-only differs
 886                  * slightly: The kernel doesn't think its stat-only if we're
 887                  * truncating.  We'd better have a req in order to defer the
 888                  * open. */
 889                 SMB_ASSERT(!((flags|flags2) & O_TRUNC));
 890         }
 891
 892         /* Do the open. */
 893         status = onefs_open_file(fsp,
 894                                  conn,
 895                                  req,
 896                                  parent_dir,
 897                                  smb_fname,
 898                                  flags|flags2,
 899                                  unx_mode,
 900                                  access_mask,
 901                                  open_access_mask,
 902                                  fsp->oplock_type,
 903                                  oplock_callback_id,
 904                                  share_access,
 905                                  create_options,
 906                                  createfile_attributes,
 907                                  sd,
 908                                  &granted_oplock);
 909
 910         if (!NT_STATUS_IS_OK(status)) {
 911
 912                 /* OneFS Oplock Handling */
 913                 if (errno == EINPROGRESS) {
 914
 915                         /* If we get EINPROGRESS, the kernel will send us an
 916                          * asynchronous semlock event back. Ensure we can defer
 917                          * the open, by asserting req. */
 918                         SMB_ASSERT(req);
 919
 920                         if (lck == NULL) {
 921                                 /*
 922                                  * We hit the race that when we did the stat
 923                                  * on the file it did not exist, and someone
 924                                  * has created it in between the stat and the
 925                                  * open_file() call. Defer our open waiting,
 926                                  * to break the oplock of the first opener.
 927                                  */
 928
 929                                 struct timespec old_write_time;
 930
 931                                 DEBUG(3, ("Someone created file %s with an "
 932                                           "oplock after we looked: Retrying\n",
 933                                           smb_fname_str_dbg(smb_fname)));
 934                                 /*
 935                                  * We hit the race that when we did the stat
 936                                  * on the file it did not exist, and someone
 937                                  * has created it in between the stat and the
 938                                  * open_file() call. Just retry immediately.
 939                                  */
 940                                 id = vfs_file_id_from_sbuf(conn,
 941                                                            &smb_fname->st);
 942                                 if (!(lck = get_share_mode_lock(talloc_tos(),
 943                                           id, conn->connectpath, smb_fname,
 944                                           &old_write_time))) {
 945                                         /*
 946                                          * Emergency exit
 947                                          */
 948                                         DEBUG(0, ("onefs_open_file_ntcreate: "
 949                                                   "Could not get share mode "
 950                                                   "lock for %s\n",
 951                                                 smb_fname_str_dbg(smb_fname)));
 952                                         status = NT_STATUS_SHARING_VIOLATION;
 953
 954                                         /* XXXZLK: This will cause us to get a
 955                                          * semlock event when we aren't
 956                                          * expecting one. */
 957                                         goto cleanup_destroy;
 958                                 }
 959
 960                                 schedule_defer_open(lck, request_time, req);
 961                                 goto cleanup;
 962                         }
 963                         /* Waiting for an oplock */
 964                         DEBUG(5,("Async createfile because a client has an "
 965                                  "oplock on %s\n",
 966                                  smb_fname_str_dbg(smb_fname)));
 967
 968                         SMB_ASSERT(req);
 969                         schedule_defer_open(lck, request_time, req);
 970                         goto cleanup;
 971                 }
 972
 973                 /* Check for a sharing violation */
 974                 if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) {
 975                         uint32 can_access_mask;
 976                         bool can_access = True;
 977
 978                         /* If we raced on open we may not have a valid file_id
 979                          * or stat buf.  Get them again. */
 980                         if (SMB_VFS_STAT(conn, fname, psbuf) == -1) {
 981                                 DEBUG(0,("Error doing stat on file %s "
 982                                         "(%s)\n", fname, strerror(errno)));
 983                                 status = NT_STATUS_SHARING_VIOLATION;
 984                                 goto cleanup_destroy;
 985                         }
 986                         id = vfs_file_id_from_sbuf(conn, psbuf);
 987
 988                         /* Check if this can be done with the deny_dos and fcb
 989                          * calls. */
 990
 991                         /* Try to find dup fsp if possible. */
 992                         if (private_flags &
 993                             (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS|
 994                              NTCREATEX_OPTIONS_PRIVATE_DENY_FCB)) {
 995
 996                                 if (req == NULL) {
 997                                         DEBUG(0, ("DOS open without an SMB "
 998                                                   "request!\n"));
 999                                         status = NT_STATUS_INTERNAL_ERROR;
1000                                         goto cleanup_destroy;
1001                                 }
1002
1003                                 /* Use the client requested access mask here,
1004                                  * not the one we open with. */
1005                                 status = fcb_or_dos_open(req,
1006                                                         conn,
1007                                                         fsp,
1008                                                         smb_fname,
1009                                                         id,
1010                                                         req->smbpid,
1011                                                         req->vuid,
1012                                                         access_mask,
1013                                                         share_access,
1014                                                         create_options);
1015
1016                                 if (NT_STATUS_IS_OK(status)) {
1017                                         if (pinfo) {
1018                                                 *pinfo = FILE_WAS_OPENED;
1019                                         }
1020                                         status =  NT_STATUS_OK;
1021                                         goto cleanup;
1022                                 }
1023                         }
1024
1025                         /*
1026                          * This next line is a subtlety we need for
1027                          * MS-Access. If a file open will fail due to share
1028                          * permissions and also for security (access) reasons,
1029                          * we need to return the access failed error, not the
1030                          * share error. We can't open the file due to kernel
1031                          * oplock deadlock (it's possible we failed above on
1032                          * the open_mode_check()) so use a userspace check.
1033                          */
1034
1035                         if (flags & O_RDWR) {
1036                                 can_access_mask = FILE_READ_DATA|FILE_WRITE_DATA;
1037                         } else if (flags & O_WRONLY) {
1038                                 can_access_mask = FILE_WRITE_DATA;
1039                         } else {
1040                                 can_access_mask = FILE_READ_DATA;
1041                         }
1042
1043                         if (((can_access_mask & FILE_WRITE_DATA) &&
1044                                 !CAN_WRITE(conn)) ||
1045                             !can_access_file_data(conn, smb_fname,
1046                                                   can_access_mask)) {
1047                                 can_access = False;
1048                         }
1049
1050                         /*
1051                          * If we're returning a share violation, ensure we
1052                          * cope with the braindead 1 second delay.
1053                          */
1054                         if (!(oplock_request & INTERNAL_OPEN_ONLY) &&
1055                             lp_defer_sharing_violations()) {
1056                                 struct timeval timeout;
1057                                 struct deferred_open_record state;
1058                                 int timeout_usecs;
1059
1060                                 /* this is a hack to speed up torture tests
1061                                    in 'make test' */
1062                                 timeout_usecs = lp_parm_int(SNUM(conn),
1063                                     "smbd","sharedelay",
1064                                     SHARING_VIOLATION_USEC_WAIT);
1065
1066                                 /* This is a relative time, added to the
1067                                    absolute request_time value to get the
1068                                    absolute timeout time.  Note that if this
1069                                    is the second or greater time we enter this
1070                                    codepath for this particular request mid
1071                                    then request_time is left as the absolute
1072                                    time of the *first* time this request mid
1073                                    was processed. This is what allows the
1074                                    request to eventually time out. */
1075
1076                                 timeout = timeval_set(0, timeout_usecs);
1077
1078                                 /* Nothing actually uses
1079                                    state.delayed_for_oplocks but it's handy to
1080                                    differentiate in debug messages between a
1081                                    30 second delay due to oplock break, and a
1082                                    1 second delay for share mode conflicts. */
1083
1084                                 state.delayed_for_oplocks = False;
1085                                 state.id = id;
1086                                 state.failed = false;
1087
1088                                 /*
1089                                  * We hit the race that when we did the stat
1090                                  * on the file it did not exist, and someone
1091                                  * has created it in between the stat and the
1092                                  * open_file() call.  Retrieve the share_mode
1093                                  * lock on the newly opened file so we can
1094                                  * defer our request.
1095                                  */
1096                                 if (lck == NULL) {
1097                                         struct timespec old_write_time;
1098                                         old_write_time = get_mtimespec(psbuf);
1099
1100                                         lck = get_share_mode_lock(talloc_tos(),
1101                                             id, conn->connectpath, fname,
1102                                             &old_write_time);
1103                                         if (lck == NULL) {
1104                                                 DEBUG(0,
1105                                                     ("onefs_open_file_ntcreate:"
1106                                                      " Could not get share "
1107                                                      "mode lock for %s\n",
1108                                                      fname));
1109                                                 /* This will cause us to return
1110                                                  * immediately skipping the
1111                                                  * the 1 second delay, which
1112                                                  * isn't a big deal */
1113                                                 status = NT_STATUS_SHARING_VIOLATION;
1114                                                 goto cleanup_destroy;
1115                                         }
1116                                 }
1117
1118                                 if ((req != NULL) &&
1119                                     !request_timed_out(request_time, timeout))
1120                                 {
1121                                         defer_open(lck, request_time, timeout,
1122                                                    req, &state);
1123                                 }
1124                         }
1125
1126                         if (can_access) {
1127                                 /*
1128                                  * We have detected a sharing violation here
1129                                  * so return the correct error code
1130                                  */
1131                                 status = NT_STATUS_SHARING_VIOLATION;
1132                         } else {
1133                                 status = NT_STATUS_ACCESS_DENIED;
1134                         }
1135
1136                         goto cleanup_destroy;
1137                 }
1138
1139                 /*
1140                  * Normal error, for example EACCES
1141                  */
1142          cleanup_destroy:
1143                 if (oplock_callback_id != 0) {
1144                         destroy_onefs_callback_record(oplock_callback_id);
1145                 }
1146          cleanup:
1147                 TALLOC_FREE(lck);
1148                 return status;
1149         }
1150
1151         fsp->oplock_type = granted_oplock;
1152
1153         if (oplock_callback_id != 0) {
1154                 onefs_set_oplock_callback(oplock_callback_id, fsp);
1155                 fsp_data->oplock_callback_id = oplock_callback_id;
1156         } else {
1157                 SMB_ASSERT(fsp->oplock_type == NO_OPLOCK);
1158         }
1159
1160         if (!file_existed) {
1161                 struct timespec old_write_time = smb_fname->st.st_ex_mtime;
1162                 /*
1163                  * Deal with the race condition where two smbd's detect the
1164                  * file doesn't exist and do the create at the same time. One
1165                  * of them will win and set a share mode, the other (ie. this
1166                  * one) should check if the requested share mode for this
1167                  * create is allowed.
1168                  */
1169
1170                 /*
1171                  * Now the file exists and fsp is successfully opened,
1172                  * fsp->file_id is valid and should replace the
1173                  * dev=0, inode=0 from a non existent file. Spotted by
1174                  * Nadav Danieli <nadavd@exanet.com>. JRA.
1175                  */
1176
1177                 id = fsp->file_id;
1178
1179                 lck = get_share_mode_lock(talloc_tos(), id,
1180                                           conn->connectpath,
1181                                           smb_fname, &old_write_time);
1182
1183                 if (lck == NULL) {
1184                         DEBUG(0, ("onefs_open_file_ntcreate: Could not get "
1185                                   "share mode lock for %s\n",
1186                                   smb_fname_str_dbg(smb_fname)));
1187                         fd_close(fsp);
1188                         return NT_STATUS_SHARING_VIOLATION;
1189                 }
1190
1191                 if (lck->delete_on_close) {
1192                         status = NT_STATUS_DELETE_PENDING;
1193                 }
1194
1195                 if (!NT_STATUS_IS_OK(status)) {
1196                         struct deferred_open_record state;
1197
1198                         fd_close(fsp);
1199
1200                         state.delayed_for_oplocks = False;
1201                         state.id = id;
1202
1203                         /* Do it all over again immediately. In the second
1204                          * round we will find that the file existed and handle
1205                          * the DELETE_PENDING and FCB cases correctly. No need
1206                          * to duplicate the code here. Essentially this is a
1207                          * "goto top of this function", but don't tell
1208                          * anybody... */
1209
1210                         if (req != NULL) {
1211                                 defer_open(lck, request_time, timeval_zero(),
1212                                            req, &state);
1213                         }
1214                         TALLOC_FREE(lck);
1215                         return status;
1216                 }
1217
1218                 /*
1219                  * We exit this block with the share entry *locked*.....
1220                  */
1221
1222         }
1223
1224         SMB_ASSERT(lck != NULL);
1225
1226         /* Delete streams if create_disposition requires it */
1227         if (file_existed && clear_ads &&
1228             !is_ntfs_stream_smb_fname(smb_fname)) {
1229                 status = delete_all_streams(conn, smb_fname->base_name);
1230                 if (!NT_STATUS_IS_OK(status)) {
1231                         TALLOC_FREE(lck);
1232                         fd_close(fsp);
1233                         return status;
1234                 }
1235         }
1236
1237         /* note that we ignore failure for the following. It is
1238            basically a hack for NFS, and NFS will never set one of
1239            these only read them. Nobody but Samba can ever set a deny
1240            mode and we have already checked our more authoritative
1241            locking database for permission to set this deny mode. If
1242            the kernel refuses the operations then the kernel is wrong.
1243            note that GPFS supports it as well - jmcd */
1244
1245         if (fsp->fh->fd != -1) {
1246                 ret_flock = SMB_VFS_KERNEL_FLOCK(fsp, share_access, access_mask);
1247                 if(ret_flock == -1 ){
1248
1249                         TALLOC_FREE(lck);
1250                         fd_close(fsp);
1251                         return NT_STATUS_SHARING_VIOLATION;
1252                 }
1253         }
1254
1255         /*
1256          * At this point onwards, we can guarentee that the share entry
1257          * is locked, whether we created the file or not, and that the
1258          * deny mode is compatible with all current opens.
1259          */
1260
1261         /*
1262          * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
1263          */
1264         fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
1265
1266         if (file_existed) {
1267                 /* stat opens on existing files don't get oplocks. */
1268                 if (is_stat_open(open_access_mask)) {
1269                         fsp->oplock_type = NO_OPLOCK;
1270                 }
1271
1272                 if (!(flags2 & O_TRUNC)) {
1273                         info = FILE_WAS_OPENED;
1274                 } else {
1275                         info = FILE_WAS_OVERWRITTEN;
1276                 }
1277         } else {
1278                 info = FILE_WAS_CREATED;
1279         }
1280
1281         if (pinfo) {
1282                 *pinfo = info;
1283         }
1284
1285         /*
1286          * Setup the oplock info in both the shared memory and
1287          * file structs.
1288          */
1289
1290         if ((fsp->oplock_type != NO_OPLOCK) &&
1291             (fsp->oplock_type != FAKE_LEVEL_II_OPLOCK)) {
1292                 if (!set_file_oplock(fsp, fsp->oplock_type)) {
1293                         /* Could not get the kernel oplock */
1294                         fsp->oplock_type = NO_OPLOCK;
1295                 }
1296         }
1297
1298         if (fsp->oplock_type == LEVEL_II_OPLOCK &&
1299             (!lp_level2_oplocks(SNUM(conn)) ||
1300                 !(global_client_caps & CAP_LEVEL_II_OPLOCKS))) {
1301
1302                 DEBUG(5, ("Downgrading level2 oplock on open "
1303                           "because level2 oplocks = off\n"));
1304
1305                 release_file_oplock(fsp);
1306         }
1307
1308         if (info == FILE_WAS_OVERWRITTEN || info == FILE_WAS_CREATED ||
1309             info == FILE_WAS_SUPERSEDED) {
1310                 new_file_created = True;
1311         }
1312
1313         set_share_mode(lck, fsp, conn->session_info->utok.uid, 0,
1314                        fsp->oplock_type);
1315
1316         /* Handle strange delete on close create semantics. */
1317         if (create_options & FILE_DELETE_ON_CLOSE) {
1318                 status = can_set_delete_on_close(fsp, new_dos_attributes);
1319
1320                 if (!NT_STATUS_IS_OK(status)) {
1321                         /* Remember to delete the mode we just added. */
1322                         del_share_mode(lck, fsp);
1323                         TALLOC_FREE(lck);
1324                         fd_close(fsp);
1325                         return status;
1326                 }
1327                 /* Note that here we set the *inital* delete on close flag,
1328                    not the regular one. The magic gets handled in close. */
1329                 fsp->initial_delete_on_close = True;
1330         }
1331
1332         /*
1333          * Take care of inherited ACLs on created files - if default ACL not
1334          * selected.
1335          * May be necessary depending on acl policies.
1336          */
1337         if (!posix_open && !file_existed && !def_acl &&
1338             !(VALID_STAT(smb_fname->st) &&
1339                 (smb_fname->st.st_ex_flags & SF_HASNTFSACL))) {
1340
1341                 int saved_errno = errno; /* We might get ENOSYS in the next
1342                                           * call.. */
1343
1344                 if (SMB_VFS_FCHMOD_ACL(fsp, unx_mode) == -1 &&
1345                     errno == ENOSYS) {
1346                         errno = saved_errno; /* Ignore ENOSYS */
1347                 }
1348
1349         } else if (new_unx_mode) {
1350
1351                 int ret = -1;
1352
1353                 /* Attributes need changing. File already existed. */
1354
1355                 {
1356                         int saved_errno = errno; /* We might get ENOSYS in the
1357                                                   * next call.. */
1358                         ret = SMB_VFS_FCHMOD_ACL(fsp, new_unx_mode);
1359
1360                         if (ret == -1 && errno == ENOSYS) {
1361                                 errno = saved_errno; /* Ignore ENOSYS */
1362                         } else {
1363                                 DEBUG(5, ("onefs_open_file_ntcreate: reset "
1364                                           "attributes of file %s to 0%o\n",
1365                                           smb_fname_str_dbg(smb_fname),
1366                                           (unsigned int)new_unx_mode));
1367                                 ret = 0; /* Don't do the fchmod below. */
1368                         }
1369                 }
1370
1371                 if ((ret == -1) &&
1372                     (SMB_VFS_FCHMOD(fsp, new_unx_mode) == -1))
1373                         DEBUG(5, ("onefs_open_file_ntcreate: failed to reset "
1374                                   "attributes of file %s to 0%o\n",
1375                                   smb_fname_str_dbg(smb_fname),
1376                                   (unsigned int)new_unx_mode));
1377         }
1378
1379         /* If this is a successful open, we must remove any deferred open
1380          * records. */
1381         if (req != NULL) {
1382                 del_deferred_open_entry(lck, req->mid);
1383         }
1384         TALLOC_FREE(lck);
1385
1386         return NT_STATUS_OK;
1387 }
1388
1389
1390 /****************************************************************************
1391  Open a directory from an NT SMB call.
1392 ****************************************************************************/
1393 static NTSTATUS onefs_open_directory(connection_struct *conn,
1394                                      struct smb_request *req,
1395                                      struct smb_filename *smb_dname,
1396                                      uint32 access_mask,
1397                                      uint32 share_access,
1398                                      uint32 create_disposition,
1399                                      uint32 create_options,
1400                                      uint32 file_attributes,
1401                                      struct security_descriptor *sd,
1402                                      files_struct **result,
1403                                      int *pinfo)
1404 {
1405         files_struct *fsp = NULL;
1406         struct share_mode_lock *lck = NULL;
1407         NTSTATUS status;
1408         struct timespec mtimespec;
1409         int info = 0;
1410         char *parent_dir;
1411         bool posix_open = false;
1412         uint32 create_flags = 0;
1413         uint32 mode = lp_dir_mask(SNUM(conn));
1414
1415         DEBUG(5, ("onefs_open_directory: opening directory %s, "
1416                   "access_mask = 0x%x, "
1417                   "share_access = 0x%x create_options = 0x%x, "
1418                   "create_disposition = 0x%x, file_attributes = 0x%x\n",
1419                   smb_fname_str_dbg(smb_dname), (unsigned int)access_mask,
1420                   (unsigned int)share_access, (unsigned int)create_options,
1421                   (unsigned int)create_disposition,
1422                   (unsigned int)file_attributes));
1423
1424         if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
1425             (conn->fs_capabilities & FILE_NAMED_STREAMS) &&
1426             is_ntfs_stream_smb_fname(smb_dname)) {
1427                 DEBUG(2, ("onefs_open_directory: %s is a stream name!\n",
1428                           smb_fname_str_dbg(smb_dname)));
1429                 return NT_STATUS_NOT_A_DIRECTORY;
1430         }
1431
1432         switch (create_disposition) {
1433                 case FILE_OPEN:
1434                         /* If directory exists open. If directory doesn't
1435                          * exist error. */
1436                         create_flags = 0;
1437                         info = FILE_WAS_OPENED;
1438                         break;
1439                 case FILE_CREATE:
1440                         /* If directory exists error. If directory doesn't
1441                          * exist create. */
1442                         create_flags = O_CREAT | O_EXCL;
1443                         info = FILE_WAS_CREATED;
1444                         break;
1445                 case FILE_OPEN_IF:
1446                         /* If directory exists open. If directory doesn't
1447                          * exist create. */
1448
1449                         /* Note: in order to return whether the directory was
1450                          * opened or created, we first try to open and then try
1451                          * to create. */
1452                         create_flags = 0;
1453                         info = FILE_WAS_OPENED;
1454                         break;
1455                 case FILE_SUPERSEDE:
1456                 case FILE_OVERWRITE:
1457                 case FILE_OVERWRITE_IF:
1458                 default:
1459                         DEBUG(5, ("onefs_open_directory: invalid "
1460                                   "create_disposition 0x%x for directory %s\n",
1461                                   (unsigned int)create_disposition,
1462                                   smb_fname_str_dbg(smb_dname)));
1463                         return NT_STATUS_INVALID_PARAMETER;
1464         }
1465
1466         /*
1467          * Check for write access to the share. Done in mkdir_internal() in
1468          * mainline samba.
1469          */
1470         if (!CAN_WRITE(conn) && (create_flags & O_CREAT)) {
1471                 return NT_STATUS_ACCESS_DENIED;
1472         }
1473
1474         /* Get parent dirname */
1475         if (!parent_dirname(talloc_tos(), smb_dname->base_name, &parent_dir,
1476                             NULL)) {
1477                 return NT_STATUS_NO_MEMORY;
1478         }
1479
1480         if (file_attributes & FILE_FLAG_POSIX_SEMANTICS) {
1481                 posix_open = true;
1482                 mode = (mode_t)(file_attributes & ~FILE_FLAG_POSIX_SEMANTICS);
1483                 file_attributes = 0;
1484         } else {
1485                 mode = unix_mode(conn, aDIR, smb_dname, parent_dir);
1486         }
1487
1488         /*
1489          * The NONINDEXED and COMPRESSED bits seem to always be cleared on
1490          * directories, no matter if you specify that they should be set.
1491          */
1492         file_attributes &=
1493             ~(FILE_ATTRIBUTE_NONINDEXED | FILE_ATTRIBUTE_COMPRESSED);
1494
1495         status = file_new(req, conn, &fsp);
1496         if(!NT_STATUS_IS_OK(status)) {
1497                 return status;
1498         }
1499
1500         /*
1501          * Actual open with retry magic to handle FILE_OPEN_IF which is
1502          * unique because the kernel won't tell us if the file was opened or
1503          * created.
1504          */
1505  retry_open:
1506         fsp->fh->fd = onefs_sys_create_file(conn,
1507                                             -1,
1508                                             smb_dname->base_name,
1509                                             access_mask,
1510                                             access_mask,
1511                                             share_access,
1512                                             create_options,
1513                                             create_flags | O_DIRECTORY,
1514                                             mode,
1515                                             0,
1516                                             0,
1517                                             sd,
1518                                             file_attributes,
1519                                             NULL);
1520
1521         if (fsp->fh->fd == -1) {
1522                 DEBUG(3, ("Error opening %s. Errno=%d (%s).\n",
1523                           smb_fname_str_dbg(smb_dname), errno,
1524                           strerror(errno)));
1525                 SMB_ASSERT(errno != EINPROGRESS);
1526
1527                 if (create_disposition == FILE_OPEN_IF) {
1528                         if (errno == ENOENT) {
1529                                 /* Try again, creating it this time. */
1530                                 create_flags = O_CREAT | O_EXCL;
1531                                 info = FILE_WAS_CREATED;
1532                                 goto retry_open;
1533                         } else if (errno == EEXIST) {
1534                                 /* Uggh. Try again again. */
1535                                 create_flags = 0;
1536                                 info = FILE_WAS_OPENED;
1537                                 goto retry_open;
1538                         }
1539                 }
1540
1541                 /* Error cases below: */
1542                 file_free(req, fsp);
1543
1544                 if ((errno == ENOENT) && (create_disposition == FILE_OPEN)) {
1545                         DEBUG(5, ("onefs_open_directory: FILE_OPEN requested "
1546                                   "for directory %s and it doesn't "
1547                                   "exist.\n", smb_fname_str_dbg(smb_dname)));
1548                         return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1549                 } else if ((errno == EEXIST) &&
1550                     (create_disposition == FILE_CREATE)) {
1551                         DEBUG(5, ("onefs_open_directory: FILE_CREATE "
1552                                   "requested for directory %s and it "
1553                                   "already exists.\n",
1554                                   smb_fname_str_dbg(smb_dname)));
1555                         return NT_STATUS_OBJECT_NAME_COLLISION;
1556                 } else if ((errno == EAGAIN) || (errno == EWOULDBLOCK)) {
1557                         /* Catch sharing violations. */
1558                         return NT_STATUS_SHARING_VIOLATION;
1559                 }
1560
1561                 return map_nt_error_from_unix(errno);
1562         }
1563
1564         if (info == FILE_WAS_CREATED) {
1565
1566                 /* Pulled from mkdir_internal() */
1567                 if (SMB_VFS_LSTAT(conn, smb_dname) == -1) {
1568                         DEBUG(2, ("Could not stat directory '%s' just "
1569                                   "created: %s\n",
1570                                   smb_fname_str_dbg(smb_dname),
1571                                   strerror(errno)));
1572                         return map_nt_error_from_unix(errno);
1573                 }
1574
1575                 if (!S_ISDIR(smb_dname->st.st_ex_mode)) {
1576                         DEBUG(0, ("Directory just '%s' created is not a "
1577                                   "directory\n",
1578                                   smb_fname_str_dbg(smb_dname)));
1579                         return NT_STATUS_ACCESS_DENIED;
1580                 }
1581
1582                 if (!posix_open) {
1583                         /*
1584                          * Check if high bits should have been set, then (if
1585                          * bits are missing): add them.  Consider bits
1586                          * automagically set by UNIX, i.e. SGID bit from
1587                          * parent dir.
1588                          */
1589                         if (mode & ~(S_IRWXU|S_IRWXG|S_IRWXO) &&
1590                             (mode & ~smb_dname->st.st_ex_mode)) {
1591                                 SMB_VFS_CHMOD(conn, smb_dname->base_name,
1592                                     (smb_dname->st.st_ex_mode |
1593                                         (mode & ~smb_dname->st.st_ex_mode)));
1594                         }
1595                 }
1596
1597                 /* Change the owner if required. */
1598                 if (lp_inherit_owner(SNUM(conn))) {
1599                         change_dir_owner_to_parent(conn, parent_dir,
1600                                                    smb_dname->base_name,
1601                                                    &smb_dname->st);
1602                 }
1603
1604                 notify_fname(conn, NOTIFY_ACTION_ADDED,
1605                              FILE_NOTIFY_CHANGE_DIR_NAME,
1606                              smb_dname->base_name);
1607         }
1608
1609         /* Stat the fd for Samba bookkeeping. */
1610         if(SMB_VFS_FSTAT(fsp, &smb_dname->st) != 0) {
1611                 fd_close(fsp);
1612                 file_free(req, fsp);
1613                 return map_nt_error_from_unix(errno);
1614         }
1615
1616         /* Setup the files_struct for it. */
1617         fsp->mode = smb_dname->st.st_ex_mode;
1618         fsp->file_id = vfs_file_id_from_sbuf(conn, &smb_dname->st);
1619         fsp->vuid = req ? req->vuid : UID_FIELD_INVALID;
1620         fsp->file_pid = req ? req->smbpid : 0;
1621         fsp->can_lock = False;
1622         fsp->can_read = False;
1623         fsp->can_write = False;
1624
1625         fsp->share_access = share_access;
1626         fsp->fh->private_options = 0;
1627         /*
1628          * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
1629          */
1630         fsp->access_mask = access_mask | FILE_READ_ATTRIBUTES;
1631         fsp->print_file = NULL;
1632         fsp->modified = False;
1633         fsp->oplock_type = NO_OPLOCK;
1634         fsp->sent_oplock_break = NO_BREAK_SENT;
1635         fsp->is_directory = True;
1636         fsp->posix_open = posix_open;
1637
1638         status = fsp_set_smb_fname(fsp, smb_dname);
1639         if (!NT_STATUS_IS_OK(status)) {
1640                 fd_close(fsp);
1641                 file_free(req, fsp);
1642                 return status;
1643         }
1644
1645         mtimespec = smb_dname->st.st_ex_mtime;
1646
1647         /*
1648          * Still set the samba share mode lock for correct delete-on-close
1649          * semantics and to make smbstatus more useful.
1650          */
1651         lck = get_share_mode_lock(talloc_tos(), fsp->file_id,
1652                                   conn->connectpath, smb_dname, &mtimespec);
1653
1654         if (lck == NULL) {
1655                 DEBUG(0, ("onefs_open_directory: Could not get share mode "
1656                           "lock for %s\n", smb_fname_str_dbg(smb_dname)));
1657                 fd_close(fsp);
1658                 file_free(req, fsp);
1659                 return NT_STATUS_SHARING_VIOLATION;
1660         }
1661
1662         if (lck->delete_on_close) {
1663                 TALLOC_FREE(lck);
1664                 fd_close(fsp);
1665                 file_free(req, fsp);
1666                 return NT_STATUS_DELETE_PENDING;
1667         }
1668
1669         set_share_mode(lck, fsp, conn->session_info->utok.uid, 0, NO_OPLOCK);
1670
1671         /*
1672          * For directories the delete on close bit at open time seems
1673          * always to be honored on close... See test 19 in Samba4 BASE-DELETE.
1674          */
1675         if (create_options & FILE_DELETE_ON_CLOSE) {
1676                 status = can_set_delete_on_close(fsp, 0);
1677                 if (!NT_STATUS_IS_OK(status) &&
1678                     !NT_STATUS_EQUAL(status, NT_STATUS_DIRECTORY_NOT_EMPTY)) {
1679                         TALLOC_FREE(lck);
1680                         fd_close(fsp);
1681                         file_free(req, fsp);
1682                         return status;
1683                 }
1684
1685                 if (NT_STATUS_IS_OK(status)) {
1686                         /* Note that here we set the *inital* delete on close flag,
1687                            not the regular one. The magic gets handled in close. */
1688                         fsp->initial_delete_on_close = True;
1689                 }
1690         }
1691
1692         TALLOC_FREE(lck);
1693
1694         if (pinfo) {
1695                 *pinfo = info;
1696         }
1697
1698         *result = fsp;
1699         return NT_STATUS_OK;
1700 }
1701
1702 /*
1703  * Wrapper around onefs_open_file_ntcreate and onefs_open_directory.
1704  */
1705 static NTSTATUS onefs_create_file_unixpath(connection_struct *conn,
1706                                            struct smb_request *req,
1707                                            struct smb_filename *smb_fname,
1708                                            uint32_t access_mask,
1709                                            uint32_t share_access,
1710                                            uint32_t create_disposition,
1711                                            uint32_t create_options,
1712                                            uint32_t file_attributes,
1713                                            uint32_t oplock_request,
1714                                            uint64_t allocation_size,
1715                                            uint32_t private_flags,
1716                                            struct security_descriptor *sd,
1717                                            struct ea_list *ea_list,
1718                                            files_struct **result,
1719                                            int *pinfo,
1720                                            struct onefs_fsp_data *fsp_data)
1721 {
1722         int info = FILE_WAS_OPENED;
1723         files_struct *base_fsp = NULL;
1724         files_struct *fsp = NULL;
1725         NTSTATUS status;
1726
1727         DEBUG(10,("onefs_create_file_unixpath: access_mask = 0x%x "
1728                   "file_attributes = 0x%x, share_access = 0x%x, "
1729                   "create_disposition = 0x%x create_options = 0x%x "
1730                   "oplock_request = 0x%x private_flags = 0x%x "
1731                   "ea_list = 0x%p, sd = 0x%p, "
1732                   "fname = %s\n",
1733                   (unsigned int)access_mask,
1734                   (unsigned int)file_attributes,
1735                   (unsigned int)share_access,
1736                   (unsigned int)create_disposition,
1737                   (unsigned int)create_options,
1738                   (unsigned int)oplock_request,
1739                   (unsigned int)private_flags,
1740                   ea_list, sd, smb_fname_str_dbg(smb_fname)));
1741
1742         if (create_options & FILE_OPEN_BY_FILE_ID) {
1743                 status = NT_STATUS_NOT_SUPPORTED;
1744                 goto fail;
1745         }
1746
1747         if (create_options & NTCREATEX_OPTIONS_INVALID_PARAM_MASK) {
1748                 status = NT_STATUS_INVALID_PARAMETER;
1749                 goto fail;
1750         }
1751
1752         if (req == NULL) {
1753                 SMB_ASSERT((oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK) ==
1754                             NO_OPLOCK);
1755                 oplock_request |= INTERNAL_OPEN_ONLY;
1756         }
1757
1758         if (lp_parm_bool(SNUM(conn), PARM_ONEFS_TYPE,
1759                 PARM_IGNORE_SACLS, PARM_IGNORE_SACLS_DEFAULT)) {
1760                 access_mask &= ~SYSTEM_SECURITY_ACCESS;
1761         }
1762
1763         if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
1764             && (access_mask & DELETE_ACCESS)
1765             && !is_ntfs_stream_smb_fname(smb_fname)) {
1766                 /*
1767                  * We can't open a file with DELETE access if any of the
1768                  * streams is open without FILE_SHARE_DELETE
1769                  */
1770                 status = open_streams_for_delete(conn, smb_fname->base_name);
1771
1772                 if (!NT_STATUS_IS_OK(status)) {
1773                         goto fail;
1774                 }
1775         }
1776
1777         if ((conn->fs_capabilities & FILE_NAMED_STREAMS)
1778             && is_ntfs_stream_smb_fname(smb_fname)) {
1779                 uint32 base_create_disposition;
1780                 struct smb_filename *smb_fname_base = NULL;
1781
1782                 if (create_options & FILE_DIRECTORY_FILE) {
1783                         status = NT_STATUS_NOT_A_DIRECTORY;
1784                         goto fail;
1785                 }
1786
1787                 switch (create_disposition) {
1788                 case FILE_OPEN:
1789                         base_create_disposition = FILE_OPEN;
1790                         break;
1791                 default:
1792                         base_create_disposition = FILE_OPEN_IF;
1793                         break;
1794                 }
1795
1796                 /* Create an smb_filename with stream_name == NULL. */
1797                 status = create_synthetic_smb_fname(talloc_tos(),
1798                                                     smb_fname->base_name,
1799                                                     NULL, NULL,
1800                                                     &smb_fname_base);
1801                 if (!NT_STATUS_IS_OK(status)) {
1802                         goto fail;
1803                 }
1804
1805                 if (SMB_VFS_STAT(conn, smb_fname_base) == -1) {
1806                         DEBUG(10, ("Unable to stat stream: %s\n",
1807                                    smb_fname_str_dbg(smb_fname_base)));
1808                 }
1809
1810                 status = onefs_create_file_unixpath(
1811                         conn,                           /* conn */
1812                         NULL,                           /* req */
1813                         smb_fname_base,                 /* fname */
1814                         SYNCHRONIZE_ACCESS,             /* access_mask */
1815                         (FILE_SHARE_READ |
1816                             FILE_SHARE_WRITE |
1817                             FILE_SHARE_DELETE),         /* share_access */
1818                         base_create_disposition,        /* create_disposition*/
1819                         0,                              /* create_options */
1820                         file_attributes,                /* file_attributes */
1821                         NO_OPLOCK,                      /* oplock_request */
1822                         0,                              /* allocation_size */
1823                         0,                              /* private_flags */
1824                         NULL,                           /* sd */
1825                         NULL,                           /* ea_list */
1826                         &base_fsp,                      /* result */
1827                         NULL,                           /* pinfo */
1828                         NULL);                          /* fsp_data */
1829
1830                 TALLOC_FREE(smb_fname_base);
1831
1832                 if (!NT_STATUS_IS_OK(status)) {
1833                         DEBUG(10, ("onefs_create_file_unixpath for base %s "
1834                                    "failed: %s\n", smb_fname->base_name,
1835                                    nt_errstr(status)));
1836                         goto fail;
1837                 }
1838
1839                 /*
1840                  * Testing against windows xp/2003/vista shows that oplocks
1841                  * can actually be requested and granted on streams (see the
1842                  * RAW-OPLOCK-STREAM1 smbtorture test).
1843                  */
1844                 if ((oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK) !=
1845                      NO_OPLOCK) {
1846                         DEBUG(5, ("Oplock(%d) being requested on a stream! "
1847                                   "Ignoring oplock request: fname=%s\n",
1848                                   oplock_request & ~SAMBA_PRIVATE_OPLOCK_MASK,
1849                                 smb_fname_str_dbg(smb_fname)));
1850                         /* Request NO_OPLOCK instead. */
1851                         oplock_request &= SAMBA_PRIVATE_OPLOCK_MASK;
1852                 }
1853         }
1854
1855         /* Covert generic bits in the security descriptor. */
1856         if (sd != NULL) {
1857                 security_acl_map_generic(sd->dacl, &file_generic_mapping);
1858                 security_acl_map_generic(sd->sacl, &file_generic_mapping);
1859         }
1860
1861         /*
1862          * If it's a request for a directory open, deal with it separately.
1863          */
1864
1865         if (create_options & FILE_DIRECTORY_FILE) {
1866
1867                 if (create_options & FILE_NON_DIRECTORY_FILE) {
1868                         status = NT_STATUS_INVALID_PARAMETER;
1869                         goto fail;
1870                 }
1871
1872                 /* Can't open a temp directory. IFS kit test. */
1873                 if (!(file_attributes & FILE_FLAG_POSIX_SEMANTICS) &&
1874                      (file_attributes & FILE_ATTRIBUTE_TEMPORARY)) {
1875                         status = NT_STATUS_INVALID_PARAMETER;
1876                         goto fail;
1877                 }
1878
1879                 /*
1880                  * We will get a create directory here if the Win32
1881                  * app specified a security descriptor in the
1882                  * CreateDirectory() call.
1883                  */
1884
1885                 status = onefs_open_directory(
1886                         conn,                           /* conn */
1887                         req,                            /* req */
1888                         smb_fname,                      /* fname */
1889                         access_mask,                    /* access_mask */
1890                         share_access,                   /* share_access */
1891                         create_disposition,             /* create_disposition*/
1892                         create_options,                 /* create_options */
1893                         file_attributes,                /* file_attributes */
1894                         sd,                             /* sd */
1895                         &fsp,                           /* result */
1896                         &info);                         /* pinfo */
1897         } else {
1898
1899                 /*
1900                  * Ordinary file case.
1901                  */
1902
1903                 status = file_new(req, conn, &fsp);
1904                 if(!NT_STATUS_IS_OK(status)) {
1905                         goto fail;
1906                 }
1907
1908                 /*
1909                  * We're opening the stream element of a base_fsp
1910                  * we already opened. Set up the base_fsp pointer.
1911                  */
1912                 if (base_fsp) {
1913                         fsp->base_fsp = base_fsp;
1914                 }
1915
1916                 status = onefs_open_file_ntcreate(
1917                         conn,                           /* conn */
1918                         req,                            /* req */
1919                         smb_fname,                      /* fname */
1920                         access_mask,                    /* access_mask */
1921                         share_access,                   /* share_access */
1922                         create_disposition,             /* create_disposition*/
1923                         create_options,                 /* create_options */
1924                         file_attributes,                /* file_attributes */
1925                         oplock_request,                 /* oplock_request */
1926                         sd,                             /* sd */
1927                         fsp,                            /* result */
1928                         &info,                          /* pinfo */
1929                         fsp_data);                      /* fsp_data */
1930
1931                 if(!NT_STATUS_IS_OK(status)) {
1932                         file_free(req, fsp);
1933                         fsp = NULL;
1934                 }
1935
1936                 if (NT_STATUS_EQUAL(status, NT_STATUS_FILE_IS_A_DIRECTORY)) {
1937
1938                         /* A stream open never opens a directory */
1939
1940                         if (base_fsp) {
1941                                 status = NT_STATUS_FILE_IS_A_DIRECTORY;
1942                                 goto fail;
1943                         }
1944
1945                         /*
1946                          * Fail the open if it was explicitly a non-directory
1947                          * file.
1948                          */
1949
1950                         if (create_options & FILE_NON_DIRECTORY_FILE) {
1951                                 status = NT_STATUS_FILE_IS_A_DIRECTORY;
1952                                 goto fail;
1953                         }
1954
1955                         create_options |= FILE_DIRECTORY_FILE;
1956
1957                         status = onefs_open_directory(
1958                                 conn,                   /* conn */
1959                                 req,                    /* req */
1960                                 smb_fname,              /* fname */
1961                                 access_mask,            /* access_mask */
1962                                 share_access,           /* share_access */
1963                                 create_disposition,     /* create_disposition*/
1964                                 create_options,         /* create_options */
1965                                 file_attributes,        /* file_attributes */
1966                                 sd,                     /* sd */
1967                                 &fsp,                   /* result */
1968                                 &info);                 /* pinfo */
1969                 }
1970         }
1971
1972         if (!NT_STATUS_IS_OK(status)) {
1973                 goto fail;
1974         }
1975
1976         fsp->base_fsp = base_fsp;
1977
1978         SMB_ASSERT(fsp);
1979
1980         if ((ea_list != NULL) && (info == FILE_WAS_CREATED)) {
1981                 status = set_ea(conn, fsp, smb_fname, ea_list);
1982                 if (!NT_STATUS_IS_OK(status)) {
1983                         goto fail;
1984                 }
1985         }
1986
1987         if (!fsp->is_directory && S_ISDIR(smb_fname->st.st_ex_mode)) {
1988                 status = NT_STATUS_ACCESS_DENIED;
1989                 goto fail;
1990         }
1991
1992         /* Save the requested allocation size. */
1993         if ((info == FILE_WAS_CREATED) || (info == FILE_WAS_OVERWRITTEN)) {
1994                 if (allocation_size
1995                     && (allocation_size > smb_fname->st.st_ex_size)) {
1996                         fsp->initial_allocation_size = smb_roundup(
1997                                 fsp->conn, allocation_size);
1998                         if (fsp->is_directory) {
1999                                 /* Can't set allocation size on a directory. */
2000                                 status = NT_STATUS_ACCESS_DENIED;
2001                                 goto fail;
2002                         }
2003                         if (vfs_allocate_file_space(
2004                                     fsp, fsp->initial_allocation_size) == -1) {
2005                                 status = NT_STATUS_DISK_FULL;
2006                                 goto fail;
2007                         }
2008                 } else {
2009                         fsp->initial_allocation_size = smb_roundup(
2010                                 fsp->conn, (uint64_t)smb_fname->st.st_ex_size);
2011                 }
2012         }
2013
2014         DEBUG(10, ("onefs_create_file_unixpath: info=%d\n", info));
2015
2016         *result = fsp;
2017         if (pinfo != NULL) {
2018                 *pinfo = info;
2019         }
2020         if ((fsp->fh != NULL) && (fsp->fh->fd != -1)) {
2021                 SMB_VFS_FSTAT(fsp, &smb_fname->st);
2022         }
2023         return NT_STATUS_OK;
2024
2025  fail:
2026         DEBUG(10, ("onefs_create_file_unixpath: %s\n", nt_errstr(status)));
2027
2028         if (fsp != NULL) {
2029                 if (base_fsp && fsp->base_fsp == base_fsp) {
2030                         /*
2031                          * The close_file below will close
2032                          * fsp->base_fsp.
2033                          */
2034                         base_fsp = NULL;
2035                 }
2036                 close_file(req, fsp, ERROR_CLOSE);
2037                 fsp = NULL;
2038         }
2039         if (base_fsp != NULL) {
2040                 close_file(req, base_fsp, ERROR_CLOSE);
2041                 base_fsp = NULL;
2042         }
2043         return status;
2044 }
2045
2046 static void destroy_onefs_fsp_data(void *p_data)
2047 {
2048         struct onefs_fsp_data *fsp_data = (struct onefs_fsp_data *)p_data;
2049
2050         destroy_onefs_callback_record(fsp_data->oplock_callback_id);
2051 }
2052
2053 /**
2054  * SMB_VFS_CREATE_FILE interface to onefs.
2055  */
2056 NTSTATUS onefs_create_file(vfs_handle_struct *handle,
2057                            struct smb_request *req,
2058                            uint16_t root_dir_fid,
2059                            struct smb_filename *smb_fname,
2060                            uint32_t access_mask,
2061                            uint32_t share_access,
2062                            uint32_t create_disposition,
2063                            uint32_t create_options,
2064                            uint32_t file_attributes,
2065                            uint32_t oplock_request,
2066                            uint64_t allocation_size,
2067                            uint32_t private_flags,
2068                            struct security_descriptor *sd,
2069                            struct ea_list *ea_list,
2070                            files_struct **result,
2071                            int *pinfo)
2072 {
2073         connection_struct *conn = handle->conn;
2074         struct onefs_fsp_data fsp_data = {};
2075         int info = FILE_WAS_OPENED;
2076         files_struct *fsp = NULL;
2077         NTSTATUS status;
2078
2079         DEBUG(10,("onefs_create_file: access_mask = 0x%x "
2080                   "file_attributes = 0x%x, share_access = 0x%x, "
2081                   "create_disposition = 0x%x create_options = 0x%x "
2082                   "oplock_request = 0x%x private_flags = 0x%x"
2083                   "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
2084                   "fname = %s\n",
2085                   (unsigned int)access_mask,
2086                   (unsigned int)file_attributes,
2087                   (unsigned int)share_access,
2088                   (unsigned int)create_disposition,
2089                   (unsigned int)create_options,
2090                   (unsigned int)oplock_request,
2091                   (unsigned int)private_flags,
2092                   (unsigned int)root_dir_fid,
2093                   ea_list, sd, smb_fname_str_dbg(smb_fname)));
2094
2095         /* Get the file name if root_dir_fid was specified. */
2096         if (root_dir_fid != 0) {
2097                 struct smb_filename *smb_fname_out = NULL;
2098                 status = get_relative_fid_filename(conn, req, root_dir_fid,
2099                                                    smb_fname, &smb_fname_out);
2100                 if (!NT_STATUS_IS_OK(status)) {
2101                         goto fail;
2102                 }
2103                 smb_fname = smb_fname_out;
2104         }
2105
2106         /* All file access must go through check_name() */
2107         status = check_name(conn, smb_fname->base_name);
2108         if (!NT_STATUS_IS_OK(status)) {
2109                 goto fail;
2110         }
2111
2112         if (is_ntfs_stream_smb_fname(smb_fname)) {
2113                 if (!(conn->fs_capabilities & FILE_NAMED_STREAMS)) {
2114                         status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
2115                         goto fail;
2116                 }
2117
2118                 if (is_ntfs_default_stream_smb_fname(smb_fname)) {
2119                         int ret;
2120                         smb_fname->stream_name = NULL;
2121                         /* We have to handle this error here. */
2122                         if (create_options & FILE_DIRECTORY_FILE) {
2123                                 status = NT_STATUS_NOT_A_DIRECTORY;
2124                                 goto fail;
2125                         }
2126                         if (lp_posix_pathnames()) {
2127                                 ret = SMB_VFS_LSTAT(conn, smb_fname);
2128                         } else {
2129                                 ret = SMB_VFS_STAT(conn, smb_fname);
2130                         }
2131
2132                         if (ret == 0 && VALID_STAT_OF_DIR(smb_fname->st)) {
2133                                 status = NT_STATUS_FILE_IS_A_DIRECTORY;
2134                                 goto fail;
2135                         }
2136                 }
2137         }
2138
2139         status = onefs_create_file_unixpath(
2140                 conn,                                   /* conn */
2141                 req,                                    /* req */
2142                 smb_fname,                              /* fname */
2143                 access_mask,                            /* access_mask */
2144                 share_access,                           /* share_access */
2145                 create_disposition,                     /* create_disposition*/
2146                 create_options,                         /* create_options */
2147                 file_attributes,                        /* file_attributes */
2148                 oplock_request,                         /* oplock_request */
2149                 allocation_size,                        /* allocation_size */
2150                 private_flags,
2151                 sd,                                     /* sd */
2152                 ea_list,                                /* ea_list */
2153                 &fsp,                                   /* result */
2154                 &info,                                  /* pinfo */
2155                 &fsp_data);                             /* psbuf */
2156
2157         if (!NT_STATUS_IS_OK(status)) {
2158                 goto fail;
2159         }
2160
2161         DEBUG(10, ("onefs_create_file: info=%d\n", info));
2162
2163         /*
2164          * Setup private onefs_fsp_data.  Currently the private data struct is
2165          * only used to store the oplock_callback_id so that when the file is
2166          * closed, the onefs_callback_record can be properly cleaned up in the
2167          * oplock_onefs sub-system.
2168          */
2169         if (fsp) {
2170                 struct onefs_fsp_data *fsp_data_tmp = NULL;
2171                 fsp_data_tmp = (struct onefs_fsp_data *)
2172                     VFS_ADD_FSP_EXTENSION(handle, fsp, struct onefs_fsp_data,
2173                         &destroy_onefs_fsp_data);
2174
2175                 if (fsp_data_tmp == NULL) {
2176                         status = NT_STATUS_NO_MEMORY;
2177                         goto fail;
2178                 }
2179
2180                 *fsp_data_tmp = fsp_data;
2181         }
2182
2183         *result = fsp;
2184         if (pinfo != NULL) {
2185                 *pinfo = info;
2186         }
2187         return NT_STATUS_OK;
2188
2189  fail:
2190         DEBUG(10, ("onefs_create_file: %s\n", nt_errstr(status)));
2191
2192         if (fsp != NULL) {
2193                 close_file(req, fsp, ERROR_CLOSE);
2194                 fsp = NULL;
2195         }
2196         return status;
2197 }