source4/ntvfs/posix/pvfs_search.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    POSIX NTVFS backend - directory search functions
   5
   6    Copyright (C) Andrew Tridgell 2004
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "vfs_posix.h"
  24 #include "system/time.h"
  25 #include "librpc/gen_ndr/security.h"
  26 #include "smbd/service_stream.h"
  27 #include "lib/events/events.h"
  28 #include "../lib/util/dlinklist.h"
  29
  30 /* place a reasonable limit on old-style searches as clients tend to
  31    not send search close requests */
  32 #define MAX_OLD_SEARCHES 2000
  33 #define MAX_SEARCH_HANDLES (UINT16_MAX - 1)
  34 #define INVALID_SEARCH_HANDLE UINT16_MAX
  35
  36 /*
  37   destroy an open search
  38 */
  39 static int pvfs_search_destructor(struct pvfs_search_state *search)
  40 {
  41         DLIST_REMOVE(search->pvfs->search.list, search);
  42         idr_remove(search->pvfs->search.idtree, search->handle);
  43         return 0;
  44 }
  45
  46 /*
  47   called when a search timer goes off
  48 */
  49 static void pvfs_search_timer(struct tevent_context *ev, struct tevent_timer *te,
  50                                       struct timeval t, void *ptr)
  51 {
  52         struct pvfs_search_state *search = talloc_get_type(ptr, struct pvfs_search_state);
  53         talloc_free(search);
  54 }
  55
  56 /*
  57   setup a timer to destroy a open search after a inactivity period
  58 */
  59 static void pvfs_search_setup_timer(struct pvfs_search_state *search)
  60 {
  61         struct tevent_context *ev = search->pvfs->ntvfs->ctx->event_ctx;
  62         if (search->handle == INVALID_SEARCH_HANDLE) return;
  63         talloc_free(search->te);
  64         search->te = event_add_timed(ev, search,
  65                                      timeval_current_ofs(search->pvfs->search.inactivity_time, 0),
  66                                      pvfs_search_timer, search);
  67 }
  68
  69 /*
  70   fill in a single search result for a given info level
  71 */
  72 static NTSTATUS fill_search_info(struct pvfs_state *pvfs,
  73                                  enum smb_search_data_level level,
  74                                  const char *unix_path,
  75                                  const char *fname,
  76                                  struct pvfs_search_state *search,
  77                                  off_t dir_offset,
  78                                  union smb_search_data *file)
  79 {
  80         struct pvfs_filename *name;
  81         NTSTATUS status;
  82         const char *shortname;
  83         uint32_t dir_index = (uint32_t)dir_offset; /* truncated - see the code
  84                                                       in pvfs_list_seek_ofs() for
  85                                                       how we cope with this */
  86
  87         status = pvfs_resolve_partial(pvfs, file, unix_path, fname, 0, &name);
  88         if (!NT_STATUS_IS_OK(status)) {
  89                 return status;
  90         }
  91
  92         status = pvfs_match_attrib(pvfs, name, search->search_attrib, search->must_attrib);
  93         if (!NT_STATUS_IS_OK(status)) {
  94                 return status;
  95         }
  96
  97         switch (level) {
  98         case RAW_SEARCH_DATA_SEARCH:
  99                 shortname = pvfs_short_name(pvfs, name, name);
 100                 file->search.attrib           = name->dos.attrib;
 101                 file->search.write_time       = nt_time_to_unix(name->dos.write_time);
 102                 file->search.size             = name->st.st_size;
 103                 file->search.name             = shortname;
 104                 file->search.id.reserved      = search->handle >> 8;
 105                 memset(file->search.id.name, ' ', sizeof(file->search.id.name));
 106                 memcpy(file->search.id.name, shortname,
 107                        MIN(strlen(shortname)+1, sizeof(file->search.id.name)));
 108                 file->search.id.handle        = search->handle & 0xFF;
 109                 file->search.id.server_cookie = dir_index;
 110                 file->search.id.client_cookie = 0;
 111                 return NT_STATUS_OK;
 112
 113         case RAW_SEARCH_DATA_STANDARD:
 114                 file->standard.resume_key   = dir_index;
 115                 file->standard.create_time  = nt_time_to_unix(name->dos.create_time);
 116                 file->standard.access_time  = nt_time_to_unix(name->dos.access_time);
 117                 file->standard.write_time   = nt_time_to_unix(name->dos.write_time);
 118                 file->standard.size         = name->st.st_size;
 119                 file->standard.alloc_size   = name->dos.alloc_size;
 120                 file->standard.attrib       = name->dos.attrib;
 121                 file->standard.name.s       = fname;
 122                 return NT_STATUS_OK;
 123
 124         case RAW_SEARCH_DATA_EA_SIZE:
 125                 file->ea_size.resume_key   = dir_index;
 126                 file->ea_size.create_time  = nt_time_to_unix(name->dos.create_time);
 127                 file->ea_size.access_time  = nt_time_to_unix(name->dos.access_time);
 128                 file->ea_size.write_time   = nt_time_to_unix(name->dos.write_time);
 129                 file->ea_size.size         = name->st.st_size;
 130                 file->ea_size.alloc_size   = name->dos.alloc_size;
 131                 file->ea_size.attrib       = name->dos.attrib;
 132                 file->ea_size.ea_size      = name->dos.ea_size;
 133                 file->ea_size.name.s       = fname;
 134                 return NT_STATUS_OK;
 135
 136         case RAW_SEARCH_DATA_EA_LIST:
 137                 file->ea_list.resume_key   = dir_index;
 138                 file->ea_list.create_time  = nt_time_to_unix(name->dos.create_time);
 139                 file->ea_list.access_time  = nt_time_to_unix(name->dos.access_time);
 140                 file->ea_list.write_time   = nt_time_to_unix(name->dos.write_time);
 141                 file->ea_list.size         = name->st.st_size;
 142                 file->ea_list.alloc_size   = name->dos.alloc_size;
 143                 file->ea_list.attrib       = name->dos.attrib;
 144                 file->ea_list.name.s       = fname;
 145                 return pvfs_query_ea_list(pvfs, file, name, -1,
 146                                           search->num_ea_names,
 147                                           search->ea_names,
 148                                           &file->ea_list.eas);
 149
 150         case RAW_SEARCH_DATA_DIRECTORY_INFO:
 151                 file->directory_info.file_index   = dir_index;
 152                 file->directory_info.create_time  = name->dos.create_time;
 153                 file->directory_info.access_time  = name->dos.access_time;
 154                 file->directory_info.write_time   = name->dos.write_time;
 155                 file->directory_info.change_time  = name->dos.change_time;
 156                 file->directory_info.size         = name->st.st_size;
 157                 file->directory_info.alloc_size   = name->dos.alloc_size;
 158                 file->directory_info.attrib       = name->dos.attrib;
 159                 file->directory_info.name.s       = fname;
 160                 return NT_STATUS_OK;
 161
 162         case RAW_SEARCH_DATA_FULL_DIRECTORY_INFO:
 163                 file->full_directory_info.file_index   = dir_index;
 164                 file->full_directory_info.create_time  = name->dos.create_time;
 165                 file->full_directory_info.access_time  = name->dos.access_time;
 166                 file->full_directory_info.write_time   = name->dos.write_time;
 167                 file->full_directory_info.change_time  = name->dos.change_time;
 168                 file->full_directory_info.size         = name->st.st_size;
 169                 file->full_directory_info.alloc_size   = name->dos.alloc_size;
 170                 file->full_directory_info.attrib       = name->dos.attrib;
 171                 file->full_directory_info.ea_size      = name->dos.ea_size;
 172                 file->full_directory_info.name.s       = fname;
 173                 return NT_STATUS_OK;
 174
 175         case RAW_SEARCH_DATA_NAME_INFO:
 176                 file->name_info.file_index   = dir_index;
 177                 file->name_info.name.s       = fname;
 178                 return NT_STATUS_OK;
 179
 180         case RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO:
 181                 file->both_directory_info.file_index   = dir_index;
 182                 file->both_directory_info.create_time  = name->dos.create_time;
 183                 file->both_directory_info.access_time  = name->dos.access_time;
 184                 file->both_directory_info.write_time   = name->dos.write_time;
 185                 file->both_directory_info.change_time  = name->dos.change_time;
 186                 file->both_directory_info.size         = name->st.st_size;
 187                 file->both_directory_info.alloc_size   = name->dos.alloc_size;
 188                 file->both_directory_info.attrib       = name->dos.attrib;
 189                 file->both_directory_info.ea_size      = name->dos.ea_size;
 190                 file->both_directory_info.short_name.s = pvfs_short_name(pvfs, file, name);
 191                 file->both_directory_info.name.s       = fname;
 192                 return NT_STATUS_OK;
 193
 194         case RAW_SEARCH_DATA_ID_FULL_DIRECTORY_INFO:
 195                 file->id_full_directory_info.file_index   = dir_index;
 196                 file->id_full_directory_info.create_time  = name->dos.create_time;
 197                 file->id_full_directory_info.access_time  = name->dos.access_time;
 198                 file->id_full_directory_info.write_time   = name->dos.write_time;
 199                 file->id_full_directory_info.change_time  = name->dos.change_time;
 200                 file->id_full_directory_info.size         = name->st.st_size;
 201                 file->id_full_directory_info.alloc_size   = name->dos.alloc_size;
 202                 file->id_full_directory_info.attrib       = name->dos.attrib;
 203                 file->id_full_directory_info.ea_size      = name->dos.ea_size;
 204                 file->id_full_directory_info.file_id      = name->dos.file_id;
 205                 file->id_full_directory_info.name.s       = fname;
 206                 return NT_STATUS_OK;
 207
 208         case RAW_SEARCH_DATA_ID_BOTH_DIRECTORY_INFO:
 209                 file->id_both_directory_info.file_index   = dir_index;
 210                 file->id_both_directory_info.create_time  = name->dos.create_time;
 211                 file->id_both_directory_info.access_time  = name->dos.access_time;
 212                 file->id_both_directory_info.write_time   = name->dos.write_time;
 213                 file->id_both_directory_info.change_time  = name->dos.change_time;
 214                 file->id_both_directory_info.size         = name->st.st_size;
 215                 file->id_both_directory_info.alloc_size   = name->dos.alloc_size;
 216                 file->id_both_directory_info.attrib       = name->dos.attrib;
 217                 file->id_both_directory_info.ea_size      = name->dos.ea_size;
 218                 file->id_both_directory_info.file_id      = name->dos.file_id;
 219                 file->id_both_directory_info.short_name.s = pvfs_short_name(pvfs, file, name);
 220                 file->id_both_directory_info.name.s       = fname;
 221                 return NT_STATUS_OK;
 222
 223         default:
 224                 return NT_STATUS_INVALID_LEVEL;
 225         }
 226 }
 227
 228
 229 /*
 230   the search fill loop
 231 */
 232 static NTSTATUS pvfs_search_fill(struct pvfs_state *pvfs, TALLOC_CTX *mem_ctx,
 233                                  unsigned int max_count,
 234                                  struct pvfs_search_state *search,
 235                                  enum smb_search_data_level level,
 236                                  unsigned int *reply_count,
 237                                  void *search_private,
 238                                  bool (*callback)(void *, const union smb_search_data *))
 239 {
 240         struct pvfs_dir *dir = search->dir;
 241         NTSTATUS status;
 242
 243         *reply_count = 0;
 244
 245         if (max_count == 0) {
 246                 max_count = 1;
 247         }
 248
 249         while ((*reply_count) < max_count) {
 250                 union smb_search_data *file;
 251                 const char *name;
 252                 off_t ofs = search->current_index;
 253
 254                 name = pvfs_list_next(dir, &search->current_index);
 255                 if (name == NULL) break;
 256
 257                 file = talloc(mem_ctx, union smb_search_data);
 258                 if (!file) {
 259                         return NT_STATUS_NO_MEMORY;
 260                 }
 261
 262                 status = fill_search_info(pvfs, level,
 263                                           pvfs_list_unix_path(dir), name,
 264                                           search, search->current_index, file);
 265                 if (!NT_STATUS_IS_OK(status)) {
 266                         talloc_free(file);
 267                         continue;
 268                 }
 269
 270                 if (!callback(search_private, file)) {
 271                         talloc_free(file);
 272                         search->current_index = ofs;
 273                         break;
 274                 }
 275
 276                 (*reply_count)++;
 277                 talloc_free(file);
 278         }
 279
 280         pvfs_search_setup_timer(search);
 281
 282         return NT_STATUS_OK;
 283 }
 284
 285 /*
 286   we've run out of search handles - cleanup those that the client forgot
 287   to close
 288 */
 289 static void pvfs_search_cleanup(struct pvfs_state *pvfs)
 290 {
 291         int i;
 292         time_t t = time_mono(NULL);
 293
 294         for (i=0;i<MAX_OLD_SEARCHES;i++) {
 295                 struct pvfs_search_state *search;
 296                 void *p = idr_find(pvfs->search.idtree, i);
 297
 298                 if (p == NULL) return;
 299
 300                 search = talloc_get_type(p, struct pvfs_search_state);
 301                 if (pvfs_list_eos(search->dir, search->current_index) &&
 302                     search->last_used != 0 &&
 303                     t > search->last_used + 30) {
 304                         /* its almost certainly been forgotten
 305                          about */
 306                         talloc_free(search);
 307                 }
 308         }
 309 }
 310
 311
 312 /*
 313    list files in a directory matching a wildcard pattern - old SMBsearch interface
 314 */
 315 static NTSTATUS pvfs_search_first_old(struct ntvfs_module_context *ntvfs,
 316                                       struct ntvfs_request *req, union smb_search_first *io,
 317                                       void *search_private,
 318                                       bool (*callback)(void *, const union smb_search_data *))
 319 {
 320         struct pvfs_dir *dir;
 321         struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
 322                                   struct pvfs_state);
 323         struct pvfs_search_state *search;
 324         unsigned int reply_count;
 325         uint16_t search_attrib;
 326         const char *pattern;
 327         NTSTATUS status;
 328         struct pvfs_filename *name;
 329         int id;
 330
 331         search_attrib = io->search_first.in.search_attrib;
 332         pattern       = io->search_first.in.pattern;
 333
 334         /* resolve the cifs name to a posix name */
 335         status = pvfs_resolve_name(pvfs, req, pattern, PVFS_RESOLVE_WILDCARD, &name);
 336         if (!NT_STATUS_IS_OK(status)) {
 337                 return status;
 338         }
 339
 340         if (!name->has_wildcard && !name->exists) {
 341                 return STATUS_NO_MORE_FILES;
 342         }
 343
 344         status = pvfs_access_check_parent(pvfs, req, name, SEC_DIR_TRAVERSE | SEC_DIR_LIST);
 345         if (!NT_STATUS_IS_OK(status)) {
 346                 return status;
 347         }
 348
 349         /* we initially make search a child of the request, then if we
 350            need to keep it long term we steal it for the private
 351            structure */
 352         search = talloc(req, struct pvfs_search_state);
 353         if (!search) {
 354                 return NT_STATUS_NO_MEMORY;
 355         }
 356
 357         /* do the actual directory listing */
 358         status = pvfs_list_start(pvfs, name, search, &dir);
 359         if (!NT_STATUS_IS_OK(status)) {
 360                 return status;
 361         }
 362
 363         /* we need to give a handle back to the client so it
 364            can continue a search */
 365         id = idr_get_new(pvfs->search.idtree, search, MAX_OLD_SEARCHES);
 366         if (id == -1) {
 367                 pvfs_search_cleanup(pvfs);
 368                 id = idr_get_new(pvfs->search.idtree, search, MAX_OLD_SEARCHES);
 369         }
 370         if (id == -1) {
 371                 return NT_STATUS_INSUFFICIENT_RESOURCES;
 372         }
 373
 374         search->pvfs = pvfs;
 375         search->handle = id;
 376         search->dir = dir;
 377         search->current_index = 0;
 378         search->search_attrib = search_attrib & 0xFF;
 379         search->must_attrib = (search_attrib>>8) & 0xFF;
 380         search->last_used = time_mono(NULL);
 381         search->te = NULL;
 382
 383         DLIST_ADD(pvfs->search.list, search);
 384
 385         talloc_set_destructor(search, pvfs_search_destructor);
 386
 387         status = pvfs_search_fill(pvfs, req, io->search_first.in.max_count, search, io->generic.data_level,
 388                                   &reply_count, search_private, callback);
 389         if (!NT_STATUS_IS_OK(status)) {
 390                 return status;
 391         }
 392
 393         io->search_first.out.count = reply_count;
 394
 395         /* not matching any entries is an error */
 396         if (reply_count == 0) {
 397                 return STATUS_NO_MORE_FILES;
 398         }
 399
 400         talloc_steal(pvfs, search);
 401
 402         return NT_STATUS_OK;
 403 }
 404
 405 /* continue a old style search */
 406 static NTSTATUS pvfs_search_next_old(struct ntvfs_module_context *ntvfs,
 407                                      struct ntvfs_request *req, union smb_search_next *io,
 408                                      void *search_private,
 409                                      bool (*callback)(void *, const union smb_search_data *))
 410 {
 411         struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
 412                                   struct pvfs_state);
 413         void *p;
 414         struct pvfs_search_state *search;
 415         struct pvfs_dir *dir;
 416         unsigned int reply_count, max_count;
 417         uint16_t handle;
 418         NTSTATUS status;
 419
 420         handle    = io->search_next.in.id.handle | (io->search_next.in.id.reserved<<8);
 421         max_count = io->search_next.in.max_count;
 422
 423         p = idr_find(pvfs->search.idtree, handle);
 424         if (p == NULL) {
 425                 /* we didn't find the search handle */
 426                 return NT_STATUS_INVALID_HANDLE;
 427         }
 428
 429         search = talloc_get_type(p, struct pvfs_search_state);
 430
 431         dir = search->dir;
 432
 433         status = pvfs_list_seek_ofs(dir, io->search_next.in.id.server_cookie,
 434                                     &search->current_index);
 435         if (!NT_STATUS_IS_OK(status)) {
 436                 return status;
 437         }
 438         search->last_used = time_mono(NULL);
 439
 440         status = pvfs_search_fill(pvfs, req, max_count, search, io->generic.data_level,
 441                                   &reply_count, search_private, callback);
 442         if (!NT_STATUS_IS_OK(status)) {
 443                 return status;
 444         }
 445
 446         io->search_next.out.count = reply_count;
 447
 448         /* not matching any entries means end of search */
 449         if (reply_count == 0) {
 450                 talloc_free(search);
 451         }
 452
 453         return NT_STATUS_OK;
 454 }
 455
 456 /*
 457    list files in a directory matching a wildcard pattern
 458 */
 459 static NTSTATUS pvfs_search_first_trans2(struct ntvfs_module_context *ntvfs,
 460                                          struct ntvfs_request *req, union smb_search_first *io,
 461                                          void *search_private,
 462                                          bool (*callback)(void *, const union smb_search_data *))
 463 {
 464         struct pvfs_dir *dir;
 465         struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
 466                                   struct pvfs_state);
 467         struct pvfs_search_state *search;
 468         unsigned int reply_count;
 469         uint16_t search_attrib, max_count;
 470         const char *pattern;
 471         NTSTATUS status;
 472         struct pvfs_filename *name;
 473         int id;
 474
 475         search_attrib = io->t2ffirst.in.search_attrib;
 476         pattern       = io->t2ffirst.in.pattern;
 477         max_count     = io->t2ffirst.in.max_count;
 478
 479         /* resolve the cifs name to a posix name */
 480         status = pvfs_resolve_name(pvfs, req, pattern, PVFS_RESOLVE_WILDCARD, &name);
 481         if (!NT_STATUS_IS_OK(status)) {
 482                 return status;
 483         }
 484
 485         if (!name->has_wildcard && !name->exists) {
 486                 return NT_STATUS_NO_SUCH_FILE;
 487         }
 488
 489         status = pvfs_access_check_parent(pvfs, req, name, SEC_DIR_TRAVERSE | SEC_DIR_LIST);
 490         if (!NT_STATUS_IS_OK(status)) {
 491                 return status;
 492         }
 493
 494         /* we initially make search a child of the request, then if we
 495            need to keep it long term we steal it for the private
 496            structure */
 497         search = talloc(req, struct pvfs_search_state);
 498         if (!search) {
 499                 return NT_STATUS_NO_MEMORY;
 500         }
 501
 502         /* do the actual directory listing */
 503         status = pvfs_list_start(pvfs, name, search, &dir);
 504         if (!NT_STATUS_IS_OK(status)) {
 505                 return status;
 506         }
 507
 508         id = idr_get_new(pvfs->search.idtree, search, MAX_SEARCH_HANDLES);
 509         if (id == -1) {
 510                 return NT_STATUS_INSUFFICIENT_RESOURCES;
 511         }
 512
 513         search->pvfs = pvfs;
 514         search->handle = id;
 515         search->dir = dir;
 516         search->current_index = 0;
 517         search->search_attrib = search_attrib;
 518         search->must_attrib = 0;
 519         search->last_used = 0;
 520         search->num_ea_names = io->t2ffirst.in.num_names;
 521         search->ea_names = io->t2ffirst.in.ea_names;
 522         search->te = NULL;
 523
 524         DLIST_ADD(pvfs->search.list, search);
 525         talloc_set_destructor(search, pvfs_search_destructor);
 526
 527         status = pvfs_search_fill(pvfs, req, max_count, search, io->generic.data_level,
 528                                   &reply_count, search_private, callback);
 529         if (!NT_STATUS_IS_OK(status)) {
 530                 return status;
 531         }
 532
 533         /* not matching any entries is an error */
 534         if (reply_count == 0) {
 535                 return NT_STATUS_NO_SUCH_FILE;
 536         }
 537
 538         io->t2ffirst.out.count = reply_count;
 539         io->t2ffirst.out.handle = search->handle;
 540         io->t2ffirst.out.end_of_search = pvfs_list_eos(dir, search->current_index) ? 1 : 0;
 541
 542         /* work out if we are going to keep the search state
 543            and allow for a search continue */
 544         if ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
 545             ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) &&
 546              io->t2ffirst.out.end_of_search)) {
 547                 talloc_free(search);
 548         } else {
 549                 talloc_steal(pvfs, search);
 550         }
 551
 552         return NT_STATUS_OK;
 553 }
 554
 555 /* continue a search */
 556 static NTSTATUS pvfs_search_next_trans2(struct ntvfs_module_context *ntvfs,
 557                                         struct ntvfs_request *req, union smb_search_next *io,
 558                                         void *search_private,
 559                                         bool (*callback)(void *, const union smb_search_data *))
 560 {
 561         struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
 562                                   struct pvfs_state);
 563         void *p;
 564         struct pvfs_search_state *search;
 565         struct pvfs_dir *dir;
 566         unsigned int reply_count;
 567         uint16_t handle;
 568         NTSTATUS status;
 569
 570         handle = io->t2fnext.in.handle;
 571
 572         p = idr_find(pvfs->search.idtree, handle);
 573         if (p == NULL) {
 574                 /* we didn't find the search handle */
 575                 return NT_STATUS_INVALID_HANDLE;
 576         }
 577
 578         search = talloc_get_type(p, struct pvfs_search_state);
 579
 580         dir = search->dir;
 581
 582         status = NT_STATUS_OK;
 583
 584         /* work out what type of continuation is being used */
 585         if (io->t2fnext.in.last_name && *io->t2fnext.in.last_name) {
 586                 status = pvfs_list_seek(dir, io->t2fnext.in.last_name, &search->current_index);
 587                 if (!NT_STATUS_IS_OK(status) && io->t2fnext.in.resume_key) {
 588                         status = pvfs_list_seek_ofs(dir, io->t2fnext.in.resume_key,
 589                                                     &search->current_index);
 590                 }
 591         } else if (!(io->t2fnext.in.flags & FLAG_TRANS2_FIND_CONTINUE)) {
 592                 status = pvfs_list_seek_ofs(dir, io->t2fnext.in.resume_key,
 593                                             &search->current_index);
 594         }
 595         if (!NT_STATUS_IS_OK(status)) {
 596                 return status;
 597         }
 598
 599         search->num_ea_names = io->t2fnext.in.num_names;
 600         search->ea_names = io->t2fnext.in.ea_names;
 601
 602         status = pvfs_search_fill(pvfs, req, io->t2fnext.in.max_count, search, io->generic.data_level,
 603                                   &reply_count, search_private, callback);
 604         if (!NT_STATUS_IS_OK(status)) {
 605                 return status;
 606         }
 607
 608         io->t2fnext.out.count = reply_count;
 609         io->t2fnext.out.end_of_search = pvfs_list_eos(dir, search->current_index) ? 1 : 0;
 610
 611         /* work out if we are going to keep the search state */
 612         if ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
 613             ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) &&
 614              io->t2fnext.out.end_of_search)) {
 615                 talloc_free(search);
 616         }
 617
 618         return NT_STATUS_OK;
 619 }
 620
 621 static NTSTATUS pvfs_search_first_smb2(struct ntvfs_module_context *ntvfs,
 622                                        struct ntvfs_request *req, const struct smb2_find *io,
 623                                        void *search_private,
 624                                        bool (*callback)(void *, const union smb_search_data *))
 625 {
 626         struct pvfs_dir *dir;
 627         struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
 628                                   struct pvfs_state);
 629         struct pvfs_search_state *search;
 630         unsigned int reply_count;
 631         uint16_t max_count;
 632         const char *pattern;
 633         NTSTATUS status;
 634         struct pvfs_filename *name;
 635         struct pvfs_file *f;
 636
 637         f = pvfs_find_fd(pvfs, req, io->in.file.ntvfs);
 638         if (!f) {
 639                 return NT_STATUS_FILE_CLOSED;
 640         }
 641
 642         /* its only valid for directories */
 643         if (f->handle->fd != -1) {
 644                 return NT_STATUS_INVALID_PARAMETER;
 645         }
 646
 647         if (!(f->access_mask & SEC_DIR_LIST)) {
 648                 return NT_STATUS_ACCESS_DENIED;
 649         }
 650
 651         if (f->search) {
 652                 talloc_free(f->search);
 653                 f->search = NULL;
 654         }
 655
 656         if (strequal(io->in.pattern, "")) {
 657                 return NT_STATUS_OBJECT_NAME_INVALID;
 658         }
 659         if (strchr_m(io->in.pattern, '\\')) {
 660                 return NT_STATUS_OBJECT_NAME_INVALID;
 661         }
 662         if (strchr_m(io->in.pattern, '/')) {
 663                 return NT_STATUS_OBJECT_NAME_INVALID;
 664         }
 665
 666         if (strequal("", f->handle->name->original_name)) {
 667                 pattern = talloc_asprintf(req, "%s", io->in.pattern);
 668                 NT_STATUS_HAVE_NO_MEMORY(pattern);
 669         } else {
 670                 pattern = talloc_asprintf(req, "%s\\%s",
 671                                           f->handle->name->original_name,
 672                                           io->in.pattern);
 673                 NT_STATUS_HAVE_NO_MEMORY(pattern);
 674         }
 675
 676         /* resolve the cifs name to a posix name */
 677         status = pvfs_resolve_name(pvfs, req, pattern, PVFS_RESOLVE_WILDCARD, &name);
 678         NT_STATUS_NOT_OK_RETURN(status);
 679
 680         if (!name->has_wildcard && !name->exists) {
 681                 return NT_STATUS_NO_SUCH_FILE;
 682         }
 683
 684         /* we initially make search a child of the request, then if we
 685            need to keep it long term we steal it for the private
 686            structure */
 687         search = talloc(req, struct pvfs_search_state);
 688         NT_STATUS_HAVE_NO_MEMORY(search);
 689
 690         /* do the actual directory listing */
 691         status = pvfs_list_start(pvfs, name, search, &dir);
 692         NT_STATUS_NOT_OK_RETURN(status);
 693
 694         search->pvfs            = pvfs;
 695         search->handle          = INVALID_SEARCH_HANDLE;
 696         search->dir             = dir;
 697         search->current_index   = 0;
 698         search->search_attrib   = 0x0000FFFF;
 699         search->must_attrib     = 0;
 700         search->last_used       = 0;
 701         search->num_ea_names    = 0;
 702         search->ea_names        = NULL;
 703         search->te              = NULL;
 704
 705         if (io->in.continue_flags & SMB2_CONTINUE_FLAG_SINGLE) {
 706                 max_count = 1;
 707         } else {
 708                 max_count = UINT16_MAX;
 709         }
 710
 711         status = pvfs_search_fill(pvfs, req, max_count, search, io->data_level,
 712                                   &reply_count, search_private, callback);
 713         NT_STATUS_NOT_OK_RETURN(status);
 714
 715         /* not matching any entries is an error */
 716         if (reply_count == 0) {
 717                 return NT_STATUS_NO_SUCH_FILE;
 718         }
 719
 720         f->search = talloc_steal(f, search);
 721
 722         return NT_STATUS_OK;
 723 }
 724
 725 static NTSTATUS pvfs_search_next_smb2(struct ntvfs_module_context *ntvfs,
 726                                       struct ntvfs_request *req, const struct smb2_find *io,
 727                                       void *search_private,
 728                                       bool (*callback)(void *, const union smb_search_data *))
 729 {
 730         struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
 731                                   struct pvfs_state);
 732         struct pvfs_search_state *search;
 733         unsigned int reply_count;
 734         uint16_t max_count;
 735         NTSTATUS status;
 736         struct pvfs_file *f;
 737
 738         f = pvfs_find_fd(pvfs, req, io->in.file.ntvfs);
 739         if (!f) {
 740                 return NT_STATUS_FILE_CLOSED;
 741         }
 742
 743         /* its only valid for directories */
 744         if (f->handle->fd != -1) {
 745                 return NT_STATUS_INVALID_PARAMETER;
 746         }
 747
 748         /* if there's no search started on the dir handle, it's like a search_first */
 749         search = f->search;
 750         if (!search) {
 751                 return pvfs_search_first_smb2(ntvfs, req, io, search_private, callback);
 752         }
 753
 754         if (io->in.continue_flags & SMB2_CONTINUE_FLAG_RESTART) {
 755                 search->current_index = 0;
 756         }
 757
 758         if (io->in.continue_flags & SMB2_CONTINUE_FLAG_SINGLE) {
 759                 max_count = 1;
 760         } else {
 761                 max_count = UINT16_MAX;
 762         }
 763
 764         status = pvfs_search_fill(pvfs, req, max_count, search, io->data_level,
 765                                   &reply_count, search_private, callback);
 766         NT_STATUS_NOT_OK_RETURN(status);
 767
 768         /* not matching any entries is an error */
 769         if (reply_count == 0) {
 770                 return STATUS_NO_MORE_FILES;
 771         }
 772
 773         return NT_STATUS_OK;
 774 }
 775
 776 /*
 777    list files in a directory matching a wildcard pattern
 778 */
 779 NTSTATUS pvfs_search_first(struct ntvfs_module_context *ntvfs,
 780                            struct ntvfs_request *req, union smb_search_first *io,
 781                            void *search_private,
 782                            bool (*callback)(void *, const union smb_search_data *))
 783 {
 784         switch (io->generic.level) {
 785         case RAW_SEARCH_SEARCH:
 786         case RAW_SEARCH_FFIRST:
 787         case RAW_SEARCH_FUNIQUE:
 788                 return pvfs_search_first_old(ntvfs, req, io, search_private, callback);
 789
 790         case RAW_SEARCH_TRANS2:
 791                 return pvfs_search_first_trans2(ntvfs, req, io, search_private, callback);
 792
 793         case RAW_SEARCH_SMB2:
 794                 return pvfs_search_first_smb2(ntvfs, req, &io->smb2, search_private, callback);
 795         }
 796
 797         return NT_STATUS_INVALID_LEVEL;
 798 }
 799
 800 /* continue a search */
 801 NTSTATUS pvfs_search_next(struct ntvfs_module_context *ntvfs,
 802                           struct ntvfs_request *req, union smb_search_next *io,
 803                           void *search_private,
 804                           bool (*callback)(void *, const union smb_search_data *))
 805 {
 806         switch (io->generic.level) {
 807         case RAW_SEARCH_SEARCH:
 808         case RAW_SEARCH_FFIRST:
 809                 return pvfs_search_next_old(ntvfs, req, io, search_private, callback);
 810
 811         case RAW_SEARCH_FUNIQUE:
 812                 return NT_STATUS_INVALID_LEVEL;
 813
 814         case RAW_SEARCH_TRANS2:
 815                 return pvfs_search_next_trans2(ntvfs, req, io, search_private, callback);
 816
 817         case RAW_SEARCH_SMB2:
 818                 return pvfs_search_next_smb2(ntvfs, req, &io->smb2, search_private, callback);
 819         }
 820
 821         return NT_STATUS_INVALID_LEVEL;
 822 }
 823
 824
 825 /* close a search */
 826 NTSTATUS pvfs_search_close(struct ntvfs_module_context *ntvfs,
 827                            struct ntvfs_request *req, union smb_search_close *io)
 828 {
 829         struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
 830                                   struct pvfs_state);
 831         void *p;
 832         struct pvfs_search_state *search;
 833         uint16_t handle = INVALID_SEARCH_HANDLE;
 834
 835         switch (io->generic.level) {
 836         case RAW_FINDCLOSE_GENERIC:
 837                 return NT_STATUS_INVALID_LEVEL;
 838
 839         case RAW_FINDCLOSE_FCLOSE:
 840                 handle = io->fclose.in.id.handle;
 841                 break;
 842
 843         case RAW_FINDCLOSE_FINDCLOSE:
 844                 handle = io->findclose.in.handle;
 845                 break;
 846         }
 847
 848         p = idr_find(pvfs->search.idtree, handle);
 849         if (p == NULL) {
 850                 /* we didn't find the search handle */
 851                 return NT_STATUS_INVALID_HANDLE;
 852         }
 853
 854         search = talloc_get_type(p, struct pvfs_search_state);
 855
 856         talloc_free(search);
 857
 858         return NT_STATUS_OK;
 859 }
 860