source4/ntvfs/simple/vfs_simple.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    simple NTVFS filesystem backend
   5
   6    Copyright (C) Andrew Tridgell 2003
   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   this implements a very simple NTVFS filesystem backend.
  23
  24   this backend largely ignores the POSIX -> CIFS mappings, just doing absolutely
  25   minimal work to give a working backend.
  26 */
  27
  28 #include "includes.h"
  29 #include "system/dir.h"
  30 #include "system/filesys.h"
  31 #include "svfs.h"
  32 #include "system/time.h"
  33 #include "../lib/util/dlinklist.h"
  34 #include "ntvfs/ntvfs.h"
  35 #include "ntvfs/simple/proto.h"
  36
  37 #ifndef O_DIRECTORY
  38 #define O_DIRECTORY 0
  39 #endif
  40
  41 #define CHECK_READ_ONLY(req) do { if (share_bool_option(ntvfs->ctx->config, SHARE_READONLY, true)) return NT_STATUS_ACCESS_DENIED; } while (0)
  42
  43 /*
  44   connect to a share - used when a tree_connect operation comes
  45   in. For a disk based backend we needs to ensure that the base
  46   directory exists (tho it doesn't need to be accessible by the user,
  47   that comes later)
  48 */
  49 static NTSTATUS svfs_connect(struct ntvfs_module_context *ntvfs,
  50                              struct ntvfs_request *req,
  51                              union smb_tcon* tcon)
  52 {
  53         struct stat st;
  54         struct svfs_private *p;
  55         struct share_config *scfg = ntvfs->ctx->config;
  56         const char *sharename;
  57
  58         switch (tcon->generic.level) {
  59         case RAW_TCON_TCON:
  60                 sharename = tcon->tcon.in.service;
  61                 break;
  62         case RAW_TCON_TCONX:
  63                 sharename = tcon->tconx.in.path;
  64                 break;
  65         case RAW_TCON_SMB2:
  66                 sharename = tcon->smb2.in.path;
  67                 break;
  68         default:
  69                 return NT_STATUS_INVALID_LEVEL;
  70         }
  71
  72         if (strncmp(sharename, "\\\\", 2) == 0) {
  73                 char *p2 = strchr(sharename+2, '\\');
  74                 if (p2) {
  75                         sharename = p2 + 1;
  76                 }
  77         }
  78
  79         p = talloc(ntvfs, struct svfs_private);
  80         NT_STATUS_HAVE_NO_MEMORY(p);
  81         p->ntvfs = ntvfs;
  82         p->next_search_handle = 0;
  83         p->connectpath = share_string_option(p, scfg, SHARE_PATH, "");
  84         p->open_files = NULL;
  85         p->search = NULL;
  86
  87         /* the directory must exist */
  88         if (stat(p->connectpath, &st) != 0 || !S_ISDIR(st.st_mode)) {
  89                 DEBUG(0,("'%s' is not a directory, when connecting to [%s]\n",
  90                          p->connectpath, sharename));
  91                 return NT_STATUS_BAD_NETWORK_NAME;
  92         }
  93
  94         ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
  95         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
  96         ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
  97         NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
  98
  99         if (tcon->generic.level == RAW_TCON_TCONX) {
 100                 tcon->tconx.out.fs_type = ntvfs->ctx->fs_type;
 101                 tcon->tconx.out.dev_type = ntvfs->ctx->dev_type;
 102         }
 103
 104         ntvfs->private_data = p;
 105
 106         return NT_STATUS_OK;
 107 }
 108
 109 /*
 110   disconnect from a share
 111 */
 112 static NTSTATUS svfs_disconnect(struct ntvfs_module_context *ntvfs)
 113 {
 114         return NT_STATUS_OK;
 115 }
 116
 117 /*
 118   find open file handle given fd
 119 */
 120 static struct svfs_file *find_fd(struct svfs_private *sp, struct ntvfs_handle *handle)
 121 {
 122         struct svfs_file *f;
 123         void *p;
 124
 125         p = ntvfs_handle_get_backend_data(handle, sp->ntvfs);
 126         if (!p) return NULL;
 127
 128         f = talloc_get_type(p, struct svfs_file);
 129         if (!f) return NULL;
 130
 131         return f;
 132 }
 133
 134 /*
 135   delete a file - the dirtype specifies the file types to include in the search.
 136   The name can contain CIFS wildcards, but rarely does (except with OS/2 clients)
 137 */
 138 static NTSTATUS svfs_unlink(struct ntvfs_module_context *ntvfs,
 139                             struct ntvfs_request *req,
 140                             union smb_unlink *unl)
 141 {
 142         char *unix_path;
 143
 144         CHECK_READ_ONLY(req);
 145
 146         unix_path = svfs_unix_path(ntvfs, req, unl->unlink.in.pattern);
 147
 148         /* ignoring wildcards ... */
 149         if (unlink(unix_path) == -1) {
 150                 return map_nt_error_from_unix_common(errno);
 151         }
 152
 153         return NT_STATUS_OK;
 154 }
 155
 156
 157 /*
 158   ioctl interface - we don't do any
 159 */
 160 static NTSTATUS svfs_ioctl(struct ntvfs_module_context *ntvfs,
 161                            struct ntvfs_request *req, union smb_ioctl *io)
 162 {
 163         return NT_STATUS_INVALID_PARAMETER;
 164 }
 165
 166 /*
 167   check if a directory exists
 168 */
 169 static NTSTATUS svfs_chkpath(struct ntvfs_module_context *ntvfs,
 170                              struct ntvfs_request *req,
 171                              union smb_chkpath *cp)
 172 {
 173         char *unix_path;
 174         struct stat st;
 175
 176         unix_path = svfs_unix_path(ntvfs, req, cp->chkpath.in.path);
 177
 178         if (stat(unix_path, &st) == -1) {
 179                 return map_nt_error_from_unix_common(errno);
 180         }
 181
 182         if (!S_ISDIR(st.st_mode)) {
 183                 return NT_STATUS_NOT_A_DIRECTORY;
 184         }
 185
 186         return NT_STATUS_OK;
 187 }
 188
 189 /*
 190   build a file_id from a stat struct
 191 */
 192 static uint64_t svfs_file_id(struct stat *st)
 193 {
 194         uint64_t ret = st->st_ino;
 195         ret <<= 32;
 196         ret |= st->st_dev;
 197         return ret;
 198 }
 199
 200 /*
 201   approximately map a struct stat to a generic fileinfo struct
 202 */
 203 static NTSTATUS svfs_map_fileinfo(struct ntvfs_module_context *ntvfs,
 204                                   struct ntvfs_request *req, union smb_fileinfo *info,
 205                                   struct stat *st, const char *unix_path)
 206 {
 207         struct svfs_dir *dir = NULL;
 208         char *pattern = NULL;
 209         int i;
 210         const char *s, *short_name;
 211
 212         s = strrchr(unix_path, '/');
 213         if (s) {
 214                 short_name = s+1;
 215         } else {
 216                 short_name = "";
 217         }
 218
 219         asprintf(&pattern, "%s:*", unix_path);
 220
 221         if (pattern) {
 222                 dir = svfs_list_unix(req, req, pattern);
 223         }
 224
 225         unix_to_nt_time(&info->generic.out.create_time, st->st_ctime);
 226         unix_to_nt_time(&info->generic.out.access_time, st->st_atime);
 227         unix_to_nt_time(&info->generic.out.write_time,  st->st_mtime);
 228         unix_to_nt_time(&info->generic.out.change_time, st->st_mtime);
 229         info->generic.out.alloc_size = st->st_size;
 230         info->generic.out.size = st->st_size;
 231         info->generic.out.attrib = svfs_unix_to_dos_attrib(st->st_mode);
 232         info->generic.out.alloc_size = st->st_blksize * st->st_blocks;
 233         info->generic.out.nlink = st->st_nlink;
 234         info->generic.out.directory = S_ISDIR(st->st_mode) ? 1 : 0;
 235         info->generic.out.file_id = svfs_file_id(st);
 236         /* REWRITE: TODO stuff in here */
 237         info->generic.out.delete_pending = 0;
 238         info->generic.out.ea_size = 0;
 239         info->generic.out.num_eas = 0;
 240         info->generic.out.fname.s = talloc_strdup(req, short_name);
 241         info->generic.out.alt_fname.s = talloc_strdup(req, short_name);
 242         info->generic.out.compressed_size = 0;
 243         info->generic.out.format = 0;
 244         info->generic.out.unit_shift = 0;
 245         info->generic.out.chunk_shift = 0;
 246         info->generic.out.cluster_shift = 0;
 247
 248         info->generic.out.access_flags = 0;
 249         info->generic.out.position = 0;
 250         info->generic.out.mode = 0;
 251         info->generic.out.alignment_requirement = 0;
 252         info->generic.out.reparse_tag = 0;
 253         info->generic.out.num_streams = 0;
 254         /* setup a single data stream */
 255         info->generic.out.num_streams = 1 + (dir?dir->count:0);
 256         info->generic.out.streams = talloc_array(req,
 257                                                    struct stream_struct,
 258                                                    info->generic.out.num_streams);
 259         if (!info->generic.out.streams) {
 260                 return NT_STATUS_NO_MEMORY;
 261         }
 262         info->generic.out.streams[0].size = st->st_size;
 263         info->generic.out.streams[0].alloc_size = st->st_size;
 264         info->generic.out.streams[0].stream_name.s = talloc_strdup(req,"::$DATA");
 265
 266         for (i=0;dir && i<dir->count;i++) {
 267                 s = strchr(dir->files[i].name, ':');
 268                 info->generic.out.streams[1+i].size = dir->files[i].st.st_size;
 269                 info->generic.out.streams[1+i].alloc_size = dir->files[i].st.st_size;
 270                 info->generic.out.streams[1+i].stream_name.s = s?s:dir->files[i].name;
 271         }
 272
 273         return NT_STATUS_OK;
 274 }
 275
 276 /*
 277   return info on a pathname
 278 */
 279 static NTSTATUS svfs_qpathinfo(struct ntvfs_module_context *ntvfs,
 280                                struct ntvfs_request *req, union smb_fileinfo *info)
 281 {
 282         char *unix_path;
 283         struct stat st;
 284
 285         DEBUG(19,("svfs_qpathinfo: file %s level 0x%x\n", info->generic.in.file.path, info->generic.level));
 286         if (info->generic.level != RAW_FILEINFO_GENERIC) {
 287                 return ntvfs_map_qpathinfo(ntvfs, req, info);
 288         }
 289
 290         unix_path = svfs_unix_path(ntvfs, req, info->generic.in.file.path);
 291         DEBUG(19,("svfs_qpathinfo: file %s\n", unix_path));
 292         if (stat(unix_path, &st) == -1) {
 293                 DEBUG(19,("svfs_qpathinfo: file %s errno=%d\n", unix_path, errno));
 294                 return map_nt_error_from_unix_common(errno);
 295         }
 296         DEBUG(19,("svfs_qpathinfo: file %s, stat done\n", unix_path));
 297         return svfs_map_fileinfo(ntvfs, req, info, &st, unix_path);
 298 }
 299
 300 /*
 301   query info on a open file
 302 */
 303 static NTSTATUS svfs_qfileinfo(struct ntvfs_module_context *ntvfs,
 304                                struct ntvfs_request *req, union smb_fileinfo *info)
 305 {
 306         struct svfs_private *p = ntvfs->private_data;
 307         struct svfs_file *f;
 308         struct stat st;
 309
 310         if (info->generic.level != RAW_FILEINFO_GENERIC) {
 311                 return ntvfs_map_qfileinfo(ntvfs, req, info);
 312         }
 313
 314         f = find_fd(p, info->generic.in.file.ntvfs);
 315         if (!f) {
 316                 return NT_STATUS_INVALID_HANDLE;
 317         }
 318
 319         if (fstat(f->fd, &st) == -1) {
 320                 return map_nt_error_from_unix_common(errno);
 321         }
 322
 323         return svfs_map_fileinfo(ntvfs, req,info, &st, f->name);
 324 }
 325
 326
 327 /*
 328   open a file
 329 */
 330 static NTSTATUS svfs_open(struct ntvfs_module_context *ntvfs,
 331                           struct ntvfs_request *req, union smb_open *io)
 332 {
 333         struct svfs_private *p = ntvfs->private_data;
 334         char *unix_path;
 335         struct stat st;
 336         int fd, flags;
 337         struct svfs_file *f;
 338         int create_flags, rdwr_flags;
 339         bool readonly;
 340         NTSTATUS status;
 341         struct ntvfs_handle *handle;
 342
 343         if (io->generic.level != RAW_OPEN_GENERIC) {
 344                 return ntvfs_map_open(ntvfs, req, io);
 345         }
 346
 347         readonly = share_bool_option(ntvfs->ctx->config, SHARE_READONLY, SHARE_READONLY_DEFAULT);
 348         if (readonly) {
 349                 create_flags = 0;
 350                 rdwr_flags = O_RDONLY;
 351         } else {
 352                 create_flags = O_CREAT;
 353                 rdwr_flags = O_RDWR;
 354         }
 355
 356         unix_path = svfs_unix_path(ntvfs, req, io->ntcreatex.in.fname);
 357
 358         switch (io->generic.in.open_disposition) {
 359         case NTCREATEX_DISP_SUPERSEDE:
 360         case NTCREATEX_DISP_OVERWRITE_IF:
 361                 flags = create_flags | O_TRUNC;
 362                 break;
 363         case NTCREATEX_DISP_OPEN:
 364         case NTCREATEX_DISP_OVERWRITE:
 365                 flags = 0;
 366                 break;
 367         case NTCREATEX_DISP_CREATE:
 368                 flags = create_flags | O_EXCL;
 369                 break;
 370         case NTCREATEX_DISP_OPEN_IF:
 371                 flags = create_flags;
 372                 break;
 373         default:
 374                 flags = 0;
 375                 break;
 376         }
 377
 378         flags |= rdwr_flags;
 379
 380         if (io->generic.in.create_options & NTCREATEX_OPTIONS_DIRECTORY) {
 381                 flags = O_RDONLY | O_DIRECTORY;
 382                 if (readonly) {
 383                         goto do_open;
 384                 }
 385                 switch (io->generic.in.open_disposition) {
 386                 case NTCREATEX_DISP_CREATE:
 387                         if (mkdir(unix_path, 0755) == -1) {
 388                                 DEBUG(9,("svfs_open: mkdir %s errno=%d\n", unix_path, errno));
 389                                 return map_nt_error_from_unix_common(errno);
 390                         }
 391                         break;
 392                 case NTCREATEX_DISP_OPEN_IF:
 393                         if (mkdir(unix_path, 0755) == -1 && errno != EEXIST) {
 394                                 DEBUG(9,("svfs_open: mkdir %s errno=%d\n", unix_path, errno));
 395                                 return map_nt_error_from_unix_common(errno);
 396                         }
 397                         break;
 398                 }
 399         }
 400
 401 do_open:
 402         fd = open(unix_path, flags, 0644);
 403         if (fd == -1) {
 404                 return map_nt_error_from_unix_common(errno);
 405         }
 406
 407         if (fstat(fd, &st) == -1) {
 408                 DEBUG(9,("svfs_open: fstat errno=%d\n", errno));
 409                 close(fd);
 410                 return map_nt_error_from_unix_common(errno);
 411         }
 412
 413         status = ntvfs_handle_new(ntvfs, req, &handle);
 414         NT_STATUS_NOT_OK_RETURN(status);
 415
 416         f = talloc(handle, struct svfs_file);
 417         if (f == NULL) {
 418                 close(fd);
 419                 return NT_STATUS_NO_MEMORY;
 420         }
 421         f->fd = fd;
 422         f->name = talloc_strdup(f, unix_path);
 423         NT_STATUS_HAVE_NO_MEMORY(f->name);
 424
 425         DLIST_ADD(p->open_files, f);
 426
 427         status = ntvfs_handle_set_backend_data(handle, ntvfs, f);
 428         NT_STATUS_NOT_OK_RETURN(status);
 429
 430         ZERO_STRUCT(io->generic.out);
 431
 432         unix_to_nt_time(&io->generic.out.create_time, st.st_ctime);
 433         unix_to_nt_time(&io->generic.out.access_time, st.st_atime);
 434         unix_to_nt_time(&io->generic.out.write_time,  st.st_mtime);
 435         unix_to_nt_time(&io->generic.out.change_time, st.st_mtime);
 436         io->generic.out.file.ntvfs = handle;
 437         io->generic.out.alloc_size = st.st_size;
 438         io->generic.out.size = st.st_size;
 439         io->generic.out.attrib = svfs_unix_to_dos_attrib(st.st_mode);
 440         io->generic.out.is_directory = S_ISDIR(st.st_mode) ? 1 : 0;
 441
 442         return NT_STATUS_OK;
 443 }
 444
 445 /*
 446   create a directory
 447 */
 448 static NTSTATUS svfs_mkdir(struct ntvfs_module_context *ntvfs,
 449                            struct ntvfs_request *req, union smb_mkdir *md)
 450 {
 451         char *unix_path;
 452
 453         CHECK_READ_ONLY(req);
 454
 455         if (md->generic.level != RAW_MKDIR_MKDIR) {
 456                 return NT_STATUS_INVALID_LEVEL;
 457         }
 458
 459         unix_path = svfs_unix_path(ntvfs, req, md->mkdir.in.path);
 460
 461         if (mkdir(unix_path, 0777) == -1) {
 462                 return map_nt_error_from_unix_common(errno);
 463         }
 464
 465         return NT_STATUS_OK;
 466 }
 467
 468 /*
 469   remove a directory
 470 */
 471 static NTSTATUS svfs_rmdir(struct ntvfs_module_context *ntvfs,
 472                            struct ntvfs_request *req, struct smb_rmdir *rd)
 473 {
 474         char *unix_path;
 475
 476         CHECK_READ_ONLY(req);
 477
 478         unix_path = svfs_unix_path(ntvfs, req, rd->in.path);
 479
 480         if (rmdir(unix_path) == -1) {
 481                 return map_nt_error_from_unix_common(errno);
 482         }
 483
 484         return NT_STATUS_OK;
 485 }
 486
 487 /*
 488   rename a set of files
 489 */
 490 static NTSTATUS svfs_rename(struct ntvfs_module_context *ntvfs,
 491                             struct ntvfs_request *req, union smb_rename *ren)
 492 {
 493         char *unix_path1, *unix_path2;
 494
 495         CHECK_READ_ONLY(req);
 496
 497         if (ren->generic.level != RAW_RENAME_RENAME) {
 498                 return NT_STATUS_INVALID_LEVEL;
 499         }
 500
 501         unix_path1 = svfs_unix_path(ntvfs, req, ren->rename.in.pattern1);
 502         unix_path2 = svfs_unix_path(ntvfs, req, ren->rename.in.pattern2);
 503
 504         if (rename(unix_path1, unix_path2) == -1) {
 505                 return map_nt_error_from_unix_common(errno);
 506         }
 507
 508         return NT_STATUS_OK;
 509 }
 510
 511 /*
 512   copy a set of files
 513 */
 514 static NTSTATUS svfs_copy(struct ntvfs_module_context *ntvfs,
 515                           struct ntvfs_request *req, struct smb_copy *cp)
 516 {
 517         return NT_STATUS_NOT_SUPPORTED;
 518 }
 519
 520 /*
 521   read from a file
 522 */
 523 static NTSTATUS svfs_read(struct ntvfs_module_context *ntvfs,
 524                           struct ntvfs_request *req, union smb_read *rd)
 525 {
 526         struct svfs_private *p = ntvfs->private_data;
 527         struct svfs_file *f;
 528         ssize_t ret;
 529
 530         if (rd->generic.level != RAW_READ_READX) {
 531                 return NT_STATUS_NOT_SUPPORTED;
 532         }
 533
 534         f = find_fd(p, rd->readx.in.file.ntvfs);
 535         if (!f) {
 536                 return NT_STATUS_INVALID_HANDLE;
 537         }
 538
 539         ret = pread(f->fd,
 540                     rd->readx.out.data,
 541                     rd->readx.in.maxcnt,
 542                     rd->readx.in.offset);
 543         if (ret == -1) {
 544                 return map_nt_error_from_unix_common(errno);
 545         }
 546
 547         rd->readx.out.nread = ret;
 548         rd->readx.out.remaining = 0; /* should fill this in? */
 549         rd->readx.out.compaction_mode = 0;
 550
 551         return NT_STATUS_OK;
 552 }
 553
 554 /*
 555   write to a file
 556 */
 557 static NTSTATUS svfs_write(struct ntvfs_module_context *ntvfs,
 558                            struct ntvfs_request *req, union smb_write *wr)
 559 {
 560         struct svfs_private *p = ntvfs->private_data;
 561         struct svfs_file *f;
 562         ssize_t ret;
 563
 564         if (wr->generic.level != RAW_WRITE_WRITEX) {
 565                 return ntvfs_map_write(ntvfs, req, wr);
 566         }
 567
 568         CHECK_READ_ONLY(req);
 569
 570         f = find_fd(p, wr->writex.in.file.ntvfs);
 571         if (!f) {
 572                 return NT_STATUS_INVALID_HANDLE;
 573         }
 574
 575         ret = pwrite(f->fd,
 576                      wr->writex.in.data,
 577                      wr->writex.in.count,
 578                      wr->writex.in.offset);
 579         if (ret == -1) {
 580                 return map_nt_error_from_unix_common(errno);
 581         }
 582
 583         wr->writex.out.nwritten = ret;
 584         wr->writex.out.remaining = 0; /* should fill this in? */
 585
 586         return NT_STATUS_OK;
 587 }
 588
 589 /*
 590   seek in a file
 591 */
 592 static NTSTATUS svfs_seek(struct ntvfs_module_context *ntvfs,
 593                           struct ntvfs_request *req,
 594                           union smb_seek *io)
 595 {
 596         return NT_STATUS_NOT_SUPPORTED;
 597 }
 598
 599 /*
 600   flush a file
 601 */
 602 static NTSTATUS svfs_flush(struct ntvfs_module_context *ntvfs,
 603                            struct ntvfs_request *req,
 604                            union smb_flush *io)
 605 {
 606         struct svfs_private *p = ntvfs->private_data;
 607         struct svfs_file *f;
 608
 609         switch (io->generic.level) {
 610         case RAW_FLUSH_FLUSH:
 611         case RAW_FLUSH_SMB2:
 612                 /* ignore the additional unknown option in SMB2 */
 613                 f = find_fd(p, io->generic.in.file.ntvfs);
 614                 if (!f) {
 615                         return NT_STATUS_INVALID_HANDLE;
 616                 }
 617                 fsync(f->fd);
 618                 return NT_STATUS_OK;
 619
 620         case RAW_FLUSH_ALL:
 621                 for (f=p->open_files;f;f=f->next) {
 622                         fsync(f->fd);
 623                 }
 624                 return NT_STATUS_OK;
 625         }
 626
 627         return NT_STATUS_INVALID_LEVEL;
 628 }
 629
 630 /*
 631   close a file
 632 */
 633 static NTSTATUS svfs_close(struct ntvfs_module_context *ntvfs,
 634                            struct ntvfs_request *req,
 635                            union smb_close *io)
 636 {
 637         struct svfs_private *p = ntvfs->private_data;
 638         struct svfs_file *f;
 639
 640         if (io->generic.level != RAW_CLOSE_CLOSE) {
 641                 /* we need a mapping function */
 642                 return NT_STATUS_INVALID_LEVEL;
 643         }
 644
 645         f = find_fd(p, io->close.in.file.ntvfs);
 646         if (!f) {
 647                 return NT_STATUS_INVALID_HANDLE;
 648         }
 649
 650         if (close(f->fd) == -1) {
 651                 return map_nt_error_from_unix_common(errno);
 652         }
 653
 654         DLIST_REMOVE(p->open_files, f);
 655         talloc_free(f->name);
 656         talloc_free(f);
 657
 658         return NT_STATUS_OK;
 659 }
 660
 661 /*
 662   exit - closing files
 663 */
 664 static NTSTATUS svfs_exit(struct ntvfs_module_context *ntvfs,
 665                           struct ntvfs_request *req)
 666 {
 667         return NT_STATUS_NOT_SUPPORTED;
 668 }
 669
 670 /*
 671   logoff - closing files
 672 */
 673 static NTSTATUS svfs_logoff(struct ntvfs_module_context *ntvfs,
 674                             struct ntvfs_request *req)
 675 {
 676         return NT_STATUS_NOT_SUPPORTED;
 677 }
 678
 679 /*
 680   setup for an async call
 681 */
 682 static NTSTATUS svfs_async_setup(struct ntvfs_module_context *ntvfs,
 683                                  struct ntvfs_request *req,
 684                                  void *private_data)
 685 {
 686         return NT_STATUS_OK;
 687 }
 688
 689 /*
 690   cancel an async call
 691 */
 692 static NTSTATUS svfs_cancel(struct ntvfs_module_context *ntvfs, struct ntvfs_request *req)
 693 {
 694         return NT_STATUS_UNSUCCESSFUL;
 695 }
 696
 697 /*
 698   lock a byte range
 699 */
 700 static NTSTATUS svfs_lock(struct ntvfs_module_context *ntvfs,
 701                           struct ntvfs_request *req, union smb_lock *lck)
 702 {
 703         DEBUG(0,("REWRITE: not doing byte range locking!\n"));
 704         return NT_STATUS_OK;
 705 }
 706
 707 /*
 708   set info on a pathname
 709 */
 710 static NTSTATUS svfs_setpathinfo(struct ntvfs_module_context *ntvfs,
 711                                  struct ntvfs_request *req, union smb_setfileinfo *st)
 712 {
 713         CHECK_READ_ONLY(req);
 714
 715         return NT_STATUS_NOT_SUPPORTED;
 716 }
 717
 718 /*
 719   set info on a open file
 720 */
 721 static NTSTATUS svfs_setfileinfo(struct ntvfs_module_context *ntvfs,
 722                                  struct ntvfs_request *req,
 723                                  union smb_setfileinfo *info)
 724 {
 725         struct svfs_private *p = ntvfs->private_data;
 726         struct svfs_file *f;
 727         struct utimbuf unix_times;
 728
 729         CHECK_READ_ONLY(req);
 730
 731         f = find_fd(p, info->generic.in.file.ntvfs);
 732         if (!f) {
 733                 return NT_STATUS_INVALID_HANDLE;
 734         }
 735
 736         switch (info->generic.level) {
 737         case RAW_SFILEINFO_END_OF_FILE_INFO:
 738         case RAW_SFILEINFO_END_OF_FILE_INFORMATION:
 739                 if (ftruncate(f->fd,
 740                               info->end_of_file_info.in.size) == -1) {
 741                         return map_nt_error_from_unix_common(errno);
 742                 }
 743                 break;
 744         case RAW_SFILEINFO_SETATTRE:
 745                 unix_times.actime = info->setattre.in.access_time;
 746                 unix_times.modtime = info->setattre.in.write_time;
 747
 748                 if (unix_times.actime == 0 && unix_times.modtime == 0) {
 749                         break;
 750                 }
 751
 752                 /* set modify time = to access time if modify time was 0 */
 753                 if (unix_times.actime != 0 && unix_times.modtime == 0) {
 754                         unix_times.modtime = unix_times.actime;
 755                 }
 756
 757                 /* Set the date on this file */
 758                 if (svfs_file_utime(f->fd, &unix_times) != 0) {
 759                         return NT_STATUS_ACCESS_DENIED;
 760                 }
 761                 break;
 762         default:
 763                 DEBUG(2,("svfs_setfileinfo: level %d not implemented\n",
 764                          info->generic.level));
 765                 return NT_STATUS_NOT_IMPLEMENTED;
 766         }
 767         return NT_STATUS_OK;
 768 }
 769
 770
 771 /*
 772   return filesystem space info
 773 */
 774 static NTSTATUS svfs_fsinfo(struct ntvfs_module_context *ntvfs,
 775                             struct ntvfs_request *req, union smb_fsinfo *fs)
 776 {
 777         struct svfs_private *p = ntvfs->private_data;
 778         struct stat st;
 779
 780         if (fs->generic.level != RAW_QFS_GENERIC) {
 781                 return ntvfs_map_fsinfo(ntvfs, req, fs);
 782         }
 783
 784         if (sys_fsusage(p->connectpath,
 785                         &fs->generic.out.blocks_free,
 786                         &fs->generic.out.blocks_total) == -1) {
 787                 return map_nt_error_from_unix_common(errno);
 788         }
 789
 790         fs->generic.out.block_size = 512;
 791
 792         if (stat(p->connectpath, &st) != 0) {
 793                 return NT_STATUS_DISK_CORRUPT_ERROR;
 794         }
 795
 796         fs->generic.out.fs_id = st.st_ino;
 797         unix_to_nt_time(&fs->generic.out.create_time, st.st_ctime);
 798         fs->generic.out.serial_number = st.st_ino;
 799         fs->generic.out.fs_attr = 0;
 800         fs->generic.out.max_file_component_length = 255;
 801         fs->generic.out.device_type = 0;
 802         fs->generic.out.device_characteristics = 0;
 803         fs->generic.out.quota_soft = 0;
 804         fs->generic.out.quota_hard = 0;
 805         fs->generic.out.quota_flags = 0;
 806         fs->generic.out.volume_name = talloc_strdup(req, ntvfs->ctx->config->name);
 807         fs->generic.out.fs_type = ntvfs->ctx->fs_type;
 808
 809         return NT_STATUS_OK;
 810 }
 811
 812 #if 0
 813 /*
 814   return filesystem attribute info
 815 */
 816 static NTSTATUS svfs_fsattr(struct ntvfs_module_context *ntvfs,
 817                             struct ntvfs_request *req, union smb_fsattr *fs)
 818 {
 819         struct stat st;
 820         struct svfs_private *p = ntvfs->private_data;
 821
 822         if (fs->generic.level != RAW_FSATTR_GENERIC) {
 823                 return ntvfs_map_fsattr(ntvfs, req, fs);
 824         }
 825
 826         if (stat(p->connectpath, &st) == -1) {
 827                 return map_nt_error_from_unix_common(errno);
 828         }
 829
 830         unix_to_nt_time(&fs->generic.out.create_time, st.st_ctime);
 831         fs->generic.out.fs_attr =
 832                 FILE_CASE_PRESERVED_NAMES |
 833                 FILE_CASE_SENSITIVE_SEARCH |
 834                 FILE_PERSISTENT_ACLS;
 835         fs->generic.out.max_file_component_length = 255;
 836         fs->generic.out.serial_number = 1;
 837         fs->generic.out.fs_type = talloc_strdup(req, "NTFS");
 838         fs->generic.out.volume_name = talloc_strdup(req,
 839                                                     lpcfg_servicename(req->tcon->service));
 840
 841         return NT_STATUS_OK;
 842 }
 843 #endif
 844
 845 /*
 846   return print queue info
 847 */
 848 static NTSTATUS svfs_lpq(struct ntvfs_module_context *ntvfs,
 849                          struct ntvfs_request *req, union smb_lpq *lpq)
 850 {
 851         return NT_STATUS_NOT_SUPPORTED;
 852 }
 853
 854 /*
 855    list files in a directory matching a wildcard pattern
 856 */
 857 static NTSTATUS svfs_search_first(struct ntvfs_module_context *ntvfs,
 858                                   struct ntvfs_request *req, union smb_search_first *io,
 859                                   void *search_private,
 860                                   bool (*callback)(void *, const union smb_search_data *))
 861 {
 862         struct svfs_dir *dir;
 863         int i;
 864         struct svfs_private *p = ntvfs->private_data;
 865         struct search_state *search;
 866         union smb_search_data file;
 867         unsigned int max_count;
 868
 869         if (io->generic.level != RAW_SEARCH_TRANS2) {
 870                 return NT_STATUS_NOT_SUPPORTED;
 871         }
 872
 873         if (io->generic.data_level != RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO) {
 874                 return NT_STATUS_NOT_SUPPORTED;
 875         }
 876
 877         search = talloc_zero(p, struct search_state);
 878         if (!search) {
 879                 return NT_STATUS_NO_MEMORY;
 880         }
 881
 882         max_count = io->t2ffirst.in.max_count;
 883
 884         dir = svfs_list(ntvfs, req, io->t2ffirst.in.pattern);
 885         if (!dir) {
 886                 return NT_STATUS_FOOBAR;
 887         }
 888
 889         search->handle = p->next_search_handle;
 890         search->dir = dir;
 891
 892         if (dir->count < max_count) {
 893                 max_count = dir->count;
 894         }
 895
 896         for (i=0; i < max_count;i++) {
 897                 ZERO_STRUCT(file);
 898                 unix_to_nt_time(&file.both_directory_info.create_time, dir->files[i].st.st_ctime);
 899                 unix_to_nt_time(&file.both_directory_info.access_time, dir->files[i].st.st_atime);
 900                 unix_to_nt_time(&file.both_directory_info.write_time,  dir->files[i].st.st_mtime);
 901                 unix_to_nt_time(&file.both_directory_info.change_time, dir->files[i].st.st_mtime);
 902                 file.both_directory_info.name.s = dir->files[i].name;
 903                 file.both_directory_info.short_name.s = dir->files[i].name;
 904                 file.both_directory_info.size = dir->files[i].st.st_size;
 905                 file.both_directory_info.attrib = svfs_unix_to_dos_attrib(dir->files[i].st.st_mode);
 906
 907                 if (!callback(search_private, &file)) {
 908                         break;
 909                 }
 910         }
 911
 912         search->current_index = i;
 913
 914         io->t2ffirst.out.count = i;
 915         io->t2ffirst.out.handle = search->handle;
 916         io->t2ffirst.out.end_of_search = (i == dir->count) ? 1 : 0;
 917
 918         /* work out if we are going to keep the search state */
 919         if ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
 920             ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
 921                 talloc_free(search);
 922         } else {
 923                 p->next_search_handle++;
 924                 DLIST_ADD(p->search, search);
 925         }
 926
 927         return NT_STATUS_OK;
 928 }
 929
 930 /* continue a search */
 931 static NTSTATUS svfs_search_next(struct ntvfs_module_context *ntvfs,
 932                                  struct ntvfs_request *req, union smb_search_next *io,
 933                                  void *search_private,
 934                                  bool (*callback)(void *, const union smb_search_data *))
 935 {
 936         struct svfs_dir *dir;
 937         int i;
 938         struct svfs_private *p = ntvfs->private_data;
 939         struct search_state *search;
 940         union smb_search_data file;
 941         unsigned int max_count;
 942
 943         if (io->generic.level != RAW_SEARCH_TRANS2) {
 944                 return NT_STATUS_NOT_SUPPORTED;
 945         }
 946
 947         if (io->generic.data_level != RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO) {
 948                 return NT_STATUS_NOT_SUPPORTED;
 949         }
 950
 951         for (search=p->search; search; search = search->next) {
 952                 if (search->handle == io->t2fnext.in.handle) break;
 953         }
 954
 955         if (!search) {
 956                 /* we didn't find the search handle */
 957                 return NT_STATUS_FOOBAR;
 958         }
 959
 960         dir = search->dir;
 961
 962         /* the client might be asking for something other than just continuing
 963            with the search */
 964         if (!(io->t2fnext.in.flags & FLAG_TRANS2_FIND_CONTINUE) &&
 965             (io->t2fnext.in.flags & FLAG_TRANS2_FIND_REQUIRE_RESUME) &&
 966             io->t2fnext.in.last_name && *io->t2fnext.in.last_name) {
 967                 /* look backwards first */
 968                 for (i=search->current_index; i > 0; i--) {
 969                         if (strcmp(io->t2fnext.in.last_name, dir->files[i-1].name) == 0) {
 970                                 search->current_index = i;
 971                                 goto found;
 972                         }
 973                 }
 974
 975                 /* then look forwards */
 976                 for (i=search->current_index+1; i <= dir->count; i++) {
 977                         if (strcmp(io->t2fnext.in.last_name, dir->files[i-1].name) == 0) {
 978                                 search->current_index = i;
 979                                 goto found;
 980                         }
 981                 }
 982         }
 983
 984 found:
 985         max_count = search->current_index + io->t2fnext.in.max_count;
 986
 987         if (max_count > dir->count) {
 988                 max_count = dir->count;
 989         }
 990
 991         for (i = search->current_index; i < max_count;i++) {
 992                 ZERO_STRUCT(file);
 993                 unix_to_nt_time(&file.both_directory_info.create_time, dir->files[i].st.st_ctime);
 994                 unix_to_nt_time(&file.both_directory_info.access_time, dir->files[i].st.st_atime);
 995                 unix_to_nt_time(&file.both_directory_info.write_time,  dir->files[i].st.st_mtime);
 996                 unix_to_nt_time(&file.both_directory_info.change_time, dir->files[i].st.st_mtime);
 997                 file.both_directory_info.name.s = dir->files[i].name;
 998                 file.both_directory_info.short_name.s = dir->files[i].name;
 999                 file.both_directory_info.size = dir->files[i].st.st_size;
1000                 file.both_directory_info.attrib = svfs_unix_to_dos_attrib(dir->files[i].st.st_mode);
1001
1002                 if (!callback(search_private, &file)) {
1003                         break;
1004                 }
1005         }
1006
1007         io->t2fnext.out.count = i - search->current_index;
1008         io->t2fnext.out.end_of_search = (i == dir->count) ? 1 : 0;
1009
1010         search->current_index = i;
1011
1012         /* work out if we are going to keep the search state */
1013         if ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
1014             ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
1015                 DLIST_REMOVE(p->search, search);
1016                 talloc_free(search);
1017         }
1018
1019         return NT_STATUS_OK;
1020 }
1021
1022 /* close a search */
1023 static NTSTATUS svfs_search_close(struct ntvfs_module_context *ntvfs,
1024                                   struct ntvfs_request *req, union smb_search_close *io)
1025 {
1026         struct svfs_private *p = ntvfs->private_data;
1027         struct search_state *search;
1028
1029         for (search=p->search; search; search = search->next) {
1030                 if (search->handle == io->findclose.in.handle) break;
1031         }
1032
1033         if (!search) {
1034                 /* we didn't find the search handle */
1035                 return NT_STATUS_FOOBAR;
1036         }
1037
1038         DLIST_REMOVE(p->search, search);
1039         talloc_free(search);
1040
1041         return NT_STATUS_OK;
1042 }
1043
1044 /* SMBtrans - not used on file shares */
1045 static NTSTATUS svfs_trans(struct ntvfs_module_context *ntvfs,
1046                            struct ntvfs_request *req, struct smb_trans2 *trans2)
1047 {
1048         return NT_STATUS_ACCESS_DENIED;
1049 }
1050
1051
1052 /*
1053   initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
1054  */
1055 NTSTATUS ntvfs_simple_init(void)
1056 {
1057         NTSTATUS ret;
1058         struct ntvfs_ops ops;
1059         NTVFS_CURRENT_CRITICAL_SIZES(vers);
1060
1061         ZERO_STRUCT(ops);
1062
1063         /* fill in all the operations */
1064         ops.connect_fn = svfs_connect;
1065         ops.disconnect_fn = svfs_disconnect;
1066         ops.unlink_fn = svfs_unlink;
1067         ops.chkpath_fn = svfs_chkpath;
1068         ops.qpathinfo_fn = svfs_qpathinfo;
1069         ops.setpathinfo_fn = svfs_setpathinfo;
1070         ops.open_fn = svfs_open;
1071         ops.mkdir_fn = svfs_mkdir;
1072         ops.rmdir_fn = svfs_rmdir;
1073         ops.rename_fn = svfs_rename;
1074         ops.copy_fn = svfs_copy;
1075         ops.ioctl_fn = svfs_ioctl;
1076         ops.read_fn = svfs_read;
1077         ops.write_fn = svfs_write;
1078         ops.seek_fn = svfs_seek;
1079         ops.flush_fn = svfs_flush;
1080         ops.close_fn = svfs_close;
1081         ops.exit_fn = svfs_exit;
1082         ops.lock_fn = svfs_lock;
1083         ops.setfileinfo_fn = svfs_setfileinfo;
1084         ops.qfileinfo_fn = svfs_qfileinfo;
1085         ops.fsinfo_fn = svfs_fsinfo;
1086         ops.lpq_fn = svfs_lpq;
1087         ops.search_first_fn = svfs_search_first;
1088         ops.search_next_fn = svfs_search_next;
1089         ops.search_close_fn = svfs_search_close;
1090         ops.trans_fn = svfs_trans;
1091         ops.logoff_fn = svfs_logoff;
1092         ops.async_setup_fn = svfs_async_setup;
1093         ops.cancel_fn = svfs_cancel;
1094
1095         /* register ourselves with the NTVFS subsystem. We register
1096            under names 'simple'
1097         */
1098
1099         ops.type = NTVFS_DISK;
1100         ops.name = "simple";
1101         ret = ntvfs_register(&ops, &vers);
1102
1103         if (!NT_STATUS_IS_OK(ret)) {
1104                 DEBUG(0,("Failed to register simple backend with name: %s!\n",
1105                          ops.name));
1106         }
1107
1108         return ret;
1109 }