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 = talloc_strdup(p, share_string_option(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         NT_STATUS_HAVE_NO_MEMORY(f);
 418         f->fd = fd;
 419         f->name = talloc_strdup(f, unix_path);
 420         NT_STATUS_HAVE_NO_MEMORY(f->name);
 421
 422         DLIST_ADD(p->open_files, f);
 423
 424         status = ntvfs_handle_set_backend_data(handle, ntvfs, f);
 425         NT_STATUS_NOT_OK_RETURN(status);
 426
 427         ZERO_STRUCT(io->generic.out);
 428
 429         unix_to_nt_time(&io->generic.out.create_time, st.st_ctime);
 430         unix_to_nt_time(&io->generic.out.access_time, st.st_atime);
 431         unix_to_nt_time(&io->generic.out.write_time,  st.st_mtime);
 432         unix_to_nt_time(&io->generic.out.change_time, st.st_mtime);
 433         io->generic.out.file.ntvfs = handle;
 434         io->generic.out.alloc_size = st.st_size;
 435         io->generic.out.size = st.st_size;
 436         io->generic.out.attrib = svfs_unix_to_dos_attrib(st.st_mode);
 437         io->generic.out.is_directory = S_ISDIR(st.st_mode) ? 1 : 0;
 438
 439         return NT_STATUS_OK;
 440 }
 441
 442 /*
 443   create a directory
 444 */
 445 static NTSTATUS svfs_mkdir(struct ntvfs_module_context *ntvfs,
 446                            struct ntvfs_request *req, union smb_mkdir *md)
 447 {
 448         char *unix_path;
 449
 450         CHECK_READ_ONLY(req);
 451
 452         if (md->generic.level != RAW_MKDIR_MKDIR) {
 453                 return NT_STATUS_INVALID_LEVEL;
 454         }
 455
 456         unix_path = svfs_unix_path(ntvfs, req, md->mkdir.in.path);
 457
 458         if (mkdir(unix_path, 0777) == -1) {
 459                 return map_nt_error_from_unix_common(errno);
 460         }
 461
 462         return NT_STATUS_OK;
 463 }
 464
 465 /*
 466   remove a directory
 467 */
 468 static NTSTATUS svfs_rmdir(struct ntvfs_module_context *ntvfs,
 469                            struct ntvfs_request *req, struct smb_rmdir *rd)
 470 {
 471         char *unix_path;
 472
 473         CHECK_READ_ONLY(req);
 474
 475         unix_path = svfs_unix_path(ntvfs, req, rd->in.path);
 476
 477         if (rmdir(unix_path) == -1) {
 478                 return map_nt_error_from_unix_common(errno);
 479         }
 480
 481         return NT_STATUS_OK;
 482 }
 483
 484 /*
 485   rename a set of files
 486 */
 487 static NTSTATUS svfs_rename(struct ntvfs_module_context *ntvfs,
 488                             struct ntvfs_request *req, union smb_rename *ren)
 489 {
 490         char *unix_path1, *unix_path2;
 491
 492         CHECK_READ_ONLY(req);
 493
 494         if (ren->generic.level != RAW_RENAME_RENAME) {
 495                 return NT_STATUS_INVALID_LEVEL;
 496         }
 497
 498         unix_path1 = svfs_unix_path(ntvfs, req, ren->rename.in.pattern1);
 499         unix_path2 = svfs_unix_path(ntvfs, req, ren->rename.in.pattern2);
 500
 501         if (rename(unix_path1, unix_path2) == -1) {
 502                 return map_nt_error_from_unix_common(errno);
 503         }
 504
 505         return NT_STATUS_OK;
 506 }
 507
 508 /*
 509   copy a set of files
 510 */
 511 static NTSTATUS svfs_copy(struct ntvfs_module_context *ntvfs,
 512                           struct ntvfs_request *req, struct smb_copy *cp)
 513 {
 514         return NT_STATUS_NOT_SUPPORTED;
 515 }
 516
 517 /*
 518   read from a file
 519 */
 520 static NTSTATUS svfs_read(struct ntvfs_module_context *ntvfs,
 521                           struct ntvfs_request *req, union smb_read *rd)
 522 {
 523         struct svfs_private *p = ntvfs->private_data;
 524         struct svfs_file *f;
 525         ssize_t ret;
 526
 527         if (rd->generic.level != RAW_READ_READX) {
 528                 return NT_STATUS_NOT_SUPPORTED;
 529         }
 530
 531         f = find_fd(p, rd->readx.in.file.ntvfs);
 532         if (!f) {
 533                 return NT_STATUS_INVALID_HANDLE;
 534         }
 535
 536         ret = pread(f->fd,
 537                     rd->readx.out.data,
 538                     rd->readx.in.maxcnt,
 539                     rd->readx.in.offset);
 540         if (ret == -1) {
 541                 return map_nt_error_from_unix_common(errno);
 542         }
 543
 544         rd->readx.out.nread = ret;
 545         rd->readx.out.remaining = 0; /* should fill this in? */
 546         rd->readx.out.compaction_mode = 0;
 547
 548         return NT_STATUS_OK;
 549 }
 550
 551 /*
 552   write to a file
 553 */
 554 static NTSTATUS svfs_write(struct ntvfs_module_context *ntvfs,
 555                            struct ntvfs_request *req, union smb_write *wr)
 556 {
 557         struct svfs_private *p = ntvfs->private_data;
 558         struct svfs_file *f;
 559         ssize_t ret;
 560
 561         if (wr->generic.level != RAW_WRITE_WRITEX) {
 562                 return ntvfs_map_write(ntvfs, req, wr);
 563         }
 564
 565         CHECK_READ_ONLY(req);
 566
 567         f = find_fd(p, wr->writex.in.file.ntvfs);
 568         if (!f) {
 569                 return NT_STATUS_INVALID_HANDLE;
 570         }
 571
 572         ret = pwrite(f->fd,
 573                      wr->writex.in.data,
 574                      wr->writex.in.count,
 575                      wr->writex.in.offset);
 576         if (ret == -1) {
 577                 return map_nt_error_from_unix_common(errno);
 578         }
 579
 580         wr->writex.out.nwritten = ret;
 581         wr->writex.out.remaining = 0; /* should fill this in? */
 582
 583         return NT_STATUS_OK;
 584 }
 585
 586 /*
 587   seek in a file
 588 */
 589 static NTSTATUS svfs_seek(struct ntvfs_module_context *ntvfs,
 590                           struct ntvfs_request *req,
 591                           union smb_seek *io)
 592 {
 593         return NT_STATUS_NOT_SUPPORTED;
 594 }
 595
 596 /*
 597   flush a file
 598 */
 599 static NTSTATUS svfs_flush(struct ntvfs_module_context *ntvfs,
 600                            struct ntvfs_request *req,
 601                            union smb_flush *io)
 602 {
 603         struct svfs_private *p = ntvfs->private_data;
 604         struct svfs_file *f;
 605
 606         switch (io->generic.level) {
 607         case RAW_FLUSH_FLUSH:
 608         case RAW_FLUSH_SMB2:
 609                 /* ignore the additional unknown option in SMB2 */
 610                 f = find_fd(p, io->generic.in.file.ntvfs);
 611                 if (!f) {
 612                         return NT_STATUS_INVALID_HANDLE;
 613                 }
 614                 fsync(f->fd);
 615                 return NT_STATUS_OK;
 616
 617         case RAW_FLUSH_ALL:
 618                 for (f=p->open_files;f;f=f->next) {
 619                         fsync(f->fd);
 620                 }
 621                 return NT_STATUS_OK;
 622         }
 623
 624         return NT_STATUS_INVALID_LEVEL;
 625 }
 626
 627 /*
 628   close a file
 629 */
 630 static NTSTATUS svfs_close(struct ntvfs_module_context *ntvfs,
 631                            struct ntvfs_request *req,
 632                            union smb_close *io)
 633 {
 634         struct svfs_private *p = ntvfs->private_data;
 635         struct svfs_file *f;
 636
 637         if (io->generic.level != RAW_CLOSE_CLOSE) {
 638                 /* we need a mapping function */
 639                 return NT_STATUS_INVALID_LEVEL;
 640         }
 641
 642         f = find_fd(p, io->close.in.file.ntvfs);
 643         if (!f) {
 644                 return NT_STATUS_INVALID_HANDLE;
 645         }
 646
 647         if (close(f->fd) == -1) {
 648                 return map_nt_error_from_unix_common(errno);
 649         }
 650
 651         DLIST_REMOVE(p->open_files, f);
 652         talloc_free(f->name);
 653         talloc_free(f);
 654
 655         return NT_STATUS_OK;
 656 }
 657
 658 /*
 659   exit - closing files
 660 */
 661 static NTSTATUS svfs_exit(struct ntvfs_module_context *ntvfs,
 662                           struct ntvfs_request *req)
 663 {
 664         return NT_STATUS_NOT_SUPPORTED;
 665 }
 666
 667 /*
 668   logoff - closing files
 669 */
 670 static NTSTATUS svfs_logoff(struct ntvfs_module_context *ntvfs,
 671                             struct ntvfs_request *req)
 672 {
 673         return NT_STATUS_NOT_SUPPORTED;
 674 }
 675
 676 /*
 677   setup for an async call
 678 */
 679 static NTSTATUS svfs_async_setup(struct ntvfs_module_context *ntvfs,
 680                                  struct ntvfs_request *req,
 681                                  void *private_data)
 682 {
 683         return NT_STATUS_OK;
 684 }
 685
 686 /*
 687   cancel an async call
 688 */
 689 static NTSTATUS svfs_cancel(struct ntvfs_module_context *ntvfs, struct ntvfs_request *req)
 690 {
 691         return NT_STATUS_UNSUCCESSFUL;
 692 }
 693
 694 /*
 695   lock a byte range
 696 */
 697 static NTSTATUS svfs_lock(struct ntvfs_module_context *ntvfs,
 698                           struct ntvfs_request *req, union smb_lock *lck)
 699 {
 700         DEBUG(0,("REWRITE: not doing byte range locking!\n"));
 701         return NT_STATUS_OK;
 702 }
 703
 704 /*
 705   set info on a pathname
 706 */
 707 static NTSTATUS svfs_setpathinfo(struct ntvfs_module_context *ntvfs,
 708                                  struct ntvfs_request *req, union smb_setfileinfo *st)
 709 {
 710         CHECK_READ_ONLY(req);
 711
 712         return NT_STATUS_NOT_SUPPORTED;
 713 }
 714
 715 /*
 716   set info on a open file
 717 */
 718 static NTSTATUS svfs_setfileinfo(struct ntvfs_module_context *ntvfs,
 719                                  struct ntvfs_request *req,
 720                                  union smb_setfileinfo *info)
 721 {
 722         struct svfs_private *p = ntvfs->private_data;
 723         struct svfs_file *f;
 724         struct utimbuf unix_times;
 725
 726         CHECK_READ_ONLY(req);
 727
 728         f = find_fd(p, info->generic.in.file.ntvfs);
 729         if (!f) {
 730                 return NT_STATUS_INVALID_HANDLE;
 731         }
 732
 733         switch (info->generic.level) {
 734         case RAW_SFILEINFO_END_OF_FILE_INFO:
 735         case RAW_SFILEINFO_END_OF_FILE_INFORMATION:
 736                 if (ftruncate(f->fd,
 737                               info->end_of_file_info.in.size) == -1) {
 738                         return map_nt_error_from_unix_common(errno);
 739                 }
 740                 break;
 741         case RAW_SFILEINFO_SETATTRE:
 742                 unix_times.actime = info->setattre.in.access_time;
 743                 unix_times.modtime = info->setattre.in.write_time;
 744
 745                 if (unix_times.actime == 0 && unix_times.modtime == 0) {
 746                         break;
 747                 }
 748
 749                 /* set modify time = to access time if modify time was 0 */
 750                 if (unix_times.actime != 0 && unix_times.modtime == 0) {
 751                         unix_times.modtime = unix_times.actime;
 752                 }
 753
 754                 /* Set the date on this file */
 755                 if (svfs_file_utime(f->fd, &unix_times) != 0) {
 756                         return NT_STATUS_ACCESS_DENIED;
 757                 }
 758                 break;
 759         default:
 760                 DEBUG(2,("svfs_setfileinfo: level %d not implemented\n",
 761                          info->generic.level));
 762                 return NT_STATUS_NOT_IMPLEMENTED;
 763         }
 764         return NT_STATUS_OK;
 765 }
 766
 767
 768 /*
 769   return filesystem space info
 770 */
 771 static NTSTATUS svfs_fsinfo(struct ntvfs_module_context *ntvfs,
 772                             struct ntvfs_request *req, union smb_fsinfo *fs)
 773 {
 774         struct svfs_private *p = ntvfs->private_data;
 775         struct stat st;
 776
 777         if (fs->generic.level != RAW_QFS_GENERIC) {
 778                 return ntvfs_map_fsinfo(ntvfs, req, fs);
 779         }
 780
 781         if (sys_fsusage(p->connectpath,
 782                         &fs->generic.out.blocks_free,
 783                         &fs->generic.out.blocks_total) == -1) {
 784                 return map_nt_error_from_unix_common(errno);
 785         }
 786
 787         fs->generic.out.block_size = 512;
 788
 789         if (stat(p->connectpath, &st) != 0) {
 790                 return NT_STATUS_DISK_CORRUPT_ERROR;
 791         }
 792
 793         fs->generic.out.fs_id = st.st_ino;
 794         unix_to_nt_time(&fs->generic.out.create_time, st.st_ctime);
 795         fs->generic.out.serial_number = st.st_ino;
 796         fs->generic.out.fs_attr = 0;
 797         fs->generic.out.max_file_component_length = 255;
 798         fs->generic.out.device_type = 0;
 799         fs->generic.out.device_characteristics = 0;
 800         fs->generic.out.quota_soft = 0;
 801         fs->generic.out.quota_hard = 0;
 802         fs->generic.out.quota_flags = 0;
 803         fs->generic.out.volume_name = talloc_strdup(req, ntvfs->ctx->config->name);
 804         fs->generic.out.fs_type = ntvfs->ctx->fs_type;
 805
 806         return NT_STATUS_OK;
 807 }
 808
 809 #if 0
 810 /*
 811   return filesystem attribute info
 812 */
 813 static NTSTATUS svfs_fsattr(struct ntvfs_module_context *ntvfs,
 814                             struct ntvfs_request *req, union smb_fsattr *fs)
 815 {
 816         struct stat st;
 817         struct svfs_private *p = ntvfs->private_data;
 818
 819         if (fs->generic.level != RAW_FSATTR_GENERIC) {
 820                 return ntvfs_map_fsattr(ntvfs, req, fs);
 821         }
 822
 823         if (stat(p->connectpath, &st) == -1) {
 824                 return map_nt_error_from_unix_common(errno);
 825         }
 826
 827         unix_to_nt_time(&fs->generic.out.create_time, st.st_ctime);
 828         fs->generic.out.fs_attr =
 829                 FILE_CASE_PRESERVED_NAMES |
 830                 FILE_CASE_SENSITIVE_SEARCH |
 831                 FILE_PERSISTENT_ACLS;
 832         fs->generic.out.max_file_component_length = 255;
 833         fs->generic.out.serial_number = 1;
 834         fs->generic.out.fs_type = talloc_strdup(req, "NTFS");
 835         fs->generic.out.volume_name = talloc_strdup(req,
 836                                                     lpcfg_servicename(req->tcon->service));
 837
 838         return NT_STATUS_OK;
 839 }
 840 #endif
 841
 842 /*
 843   return print queue info
 844 */
 845 static NTSTATUS svfs_lpq(struct ntvfs_module_context *ntvfs,
 846                          struct ntvfs_request *req, union smb_lpq *lpq)
 847 {
 848         return NT_STATUS_NOT_SUPPORTED;
 849 }
 850
 851 /*
 852    list files in a directory matching a wildcard pattern
 853 */
 854 static NTSTATUS svfs_search_first(struct ntvfs_module_context *ntvfs,
 855                                   struct ntvfs_request *req, union smb_search_first *io,
 856                                   void *search_private,
 857                                   bool (*callback)(void *, const union smb_search_data *))
 858 {
 859         struct svfs_dir *dir;
 860         int i;
 861         struct svfs_private *p = ntvfs->private_data;
 862         struct search_state *search;
 863         union smb_search_data file;
 864         unsigned int max_count;
 865
 866         if (io->generic.level != RAW_SEARCH_TRANS2) {
 867                 return NT_STATUS_NOT_SUPPORTED;
 868         }
 869
 870         if (io->generic.data_level != RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO) {
 871                 return NT_STATUS_NOT_SUPPORTED;
 872         }
 873
 874         search = talloc_zero(p, struct search_state);
 875         if (!search) {
 876                 return NT_STATUS_NO_MEMORY;
 877         }
 878
 879         max_count = io->t2ffirst.in.max_count;
 880
 881         dir = svfs_list(ntvfs, req, io->t2ffirst.in.pattern);
 882         if (!dir) {
 883                 return NT_STATUS_FOOBAR;
 884         }
 885
 886         search->handle = p->next_search_handle;
 887         search->dir = dir;
 888
 889         if (dir->count < max_count) {
 890                 max_count = dir->count;
 891         }
 892
 893         for (i=0; i < max_count;i++) {
 894                 ZERO_STRUCT(file);
 895                 unix_to_nt_time(&file.both_directory_info.create_time, dir->files[i].st.st_ctime);
 896                 unix_to_nt_time(&file.both_directory_info.access_time, dir->files[i].st.st_atime);
 897                 unix_to_nt_time(&file.both_directory_info.write_time,  dir->files[i].st.st_mtime);
 898                 unix_to_nt_time(&file.both_directory_info.change_time, dir->files[i].st.st_mtime);
 899                 file.both_directory_info.name.s = dir->files[i].name;
 900                 file.both_directory_info.short_name.s = dir->files[i].name;
 901                 file.both_directory_info.size = dir->files[i].st.st_size;
 902                 file.both_directory_info.attrib = svfs_unix_to_dos_attrib(dir->files[i].st.st_mode);
 903
 904                 if (!callback(search_private, &file)) {
 905                         break;
 906                 }
 907         }
 908
 909         search->current_index = i;
 910
 911         io->t2ffirst.out.count = i;
 912         io->t2ffirst.out.handle = search->handle;
 913         io->t2ffirst.out.end_of_search = (i == dir->count) ? 1 : 0;
 914
 915         /* work out if we are going to keep the search state */
 916         if ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
 917             ((io->t2ffirst.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
 918                 talloc_free(search);
 919         } else {
 920                 p->next_search_handle++;
 921                 DLIST_ADD(p->search, search);
 922         }
 923
 924         return NT_STATUS_OK;
 925 }
 926
 927 /* continue a search */
 928 static NTSTATUS svfs_search_next(struct ntvfs_module_context *ntvfs,
 929                                  struct ntvfs_request *req, union smb_search_next *io,
 930                                  void *search_private,
 931                                  bool (*callback)(void *, const union smb_search_data *))
 932 {
 933         struct svfs_dir *dir;
 934         int i;
 935         struct svfs_private *p = ntvfs->private_data;
 936         struct search_state *search;
 937         union smb_search_data file;
 938         unsigned int max_count;
 939
 940         if (io->generic.level != RAW_SEARCH_TRANS2) {
 941                 return NT_STATUS_NOT_SUPPORTED;
 942         }
 943
 944         if (io->generic.data_level != RAW_SEARCH_DATA_BOTH_DIRECTORY_INFO) {
 945                 return NT_STATUS_NOT_SUPPORTED;
 946         }
 947
 948         for (search=p->search; search; search = search->next) {
 949                 if (search->handle == io->t2fnext.in.handle) break;
 950         }
 951
 952         if (!search) {
 953                 /* we didn't find the search handle */
 954                 return NT_STATUS_FOOBAR;
 955         }
 956
 957         dir = search->dir;
 958
 959         /* the client might be asking for something other than just continuing
 960            with the search */
 961         if (!(io->t2fnext.in.flags & FLAG_TRANS2_FIND_CONTINUE) &&
 962             (io->t2fnext.in.flags & FLAG_TRANS2_FIND_REQUIRE_RESUME) &&
 963             io->t2fnext.in.last_name && *io->t2fnext.in.last_name) {
 964                 /* look backwards first */
 965                 for (i=search->current_index; i > 0; i--) {
 966                         if (strcmp(io->t2fnext.in.last_name, dir->files[i-1].name) == 0) {
 967                                 search->current_index = i;
 968                                 goto found;
 969                         }
 970                 }
 971
 972                 /* then look forwards */
 973                 for (i=search->current_index+1; i <= dir->count; i++) {
 974                         if (strcmp(io->t2fnext.in.last_name, dir->files[i-1].name) == 0) {
 975                                 search->current_index = i;
 976                                 goto found;
 977                         }
 978                 }
 979         }
 980
 981 found:
 982         max_count = search->current_index + io->t2fnext.in.max_count;
 983
 984         if (max_count > dir->count) {
 985                 max_count = dir->count;
 986         }
 987
 988         for (i = search->current_index; i < max_count;i++) {
 989                 ZERO_STRUCT(file);
 990                 unix_to_nt_time(&file.both_directory_info.create_time, dir->files[i].st.st_ctime);
 991                 unix_to_nt_time(&file.both_directory_info.access_time, dir->files[i].st.st_atime);
 992                 unix_to_nt_time(&file.both_directory_info.write_time,  dir->files[i].st.st_mtime);
 993                 unix_to_nt_time(&file.both_directory_info.change_time, dir->files[i].st.st_mtime);
 994                 file.both_directory_info.name.s = dir->files[i].name;
 995                 file.both_directory_info.short_name.s = dir->files[i].name;
 996                 file.both_directory_info.size = dir->files[i].st.st_size;
 997                 file.both_directory_info.attrib = svfs_unix_to_dos_attrib(dir->files[i].st.st_mode);
 998
 999                 if (!callback(search_private, &file)) {
1000                         break;
1001                 }
1002         }
1003
1004         io->t2fnext.out.count = i - search->current_index;
1005         io->t2fnext.out.end_of_search = (i == dir->count) ? 1 : 0;
1006
1007         search->current_index = i;
1008
1009         /* work out if we are going to keep the search state */
1010         if ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE) ||
1011             ((io->t2fnext.in.flags & FLAG_TRANS2_FIND_CLOSE_IF_END) && (i == dir->count))) {
1012                 DLIST_REMOVE(p->search, search);
1013                 talloc_free(search);
1014         }
1015
1016         return NT_STATUS_OK;
1017 }
1018
1019 /* close a search */
1020 static NTSTATUS svfs_search_close(struct ntvfs_module_context *ntvfs,
1021                                   struct ntvfs_request *req, union smb_search_close *io)
1022 {
1023         struct svfs_private *p = ntvfs->private_data;
1024         struct search_state *search;
1025
1026         for (search=p->search; search; search = search->next) {
1027                 if (search->handle == io->findclose.in.handle) break;
1028         }
1029
1030         if (!search) {
1031                 /* we didn't find the search handle */
1032                 return NT_STATUS_FOOBAR;
1033         }
1034
1035         DLIST_REMOVE(p->search, search);
1036         talloc_free(search);
1037
1038         return NT_STATUS_OK;
1039 }
1040
1041 /* SMBtrans - not used on file shares */
1042 static NTSTATUS svfs_trans(struct ntvfs_module_context *ntvfs,
1043                            struct ntvfs_request *req, struct smb_trans2 *trans2)
1044 {
1045         return NT_STATUS_ACCESS_DENIED;
1046 }
1047
1048
1049 /*
1050   initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
1051  */
1052 NTSTATUS ntvfs_simple_init(void)
1053 {
1054         NTSTATUS ret;
1055         struct ntvfs_ops ops;
1056         NTVFS_CURRENT_CRITICAL_SIZES(vers);
1057
1058         ZERO_STRUCT(ops);
1059
1060         /* fill in all the operations */
1061         ops.connect_fn = svfs_connect;
1062         ops.disconnect_fn = svfs_disconnect;
1063         ops.unlink_fn = svfs_unlink;
1064         ops.chkpath_fn = svfs_chkpath;
1065         ops.qpathinfo_fn = svfs_qpathinfo;
1066         ops.setpathinfo_fn = svfs_setpathinfo;
1067         ops.open_fn = svfs_open;
1068         ops.mkdir_fn = svfs_mkdir;
1069         ops.rmdir_fn = svfs_rmdir;
1070         ops.rename_fn = svfs_rename;
1071         ops.copy_fn = svfs_copy;
1072         ops.ioctl_fn = svfs_ioctl;
1073         ops.read_fn = svfs_read;
1074         ops.write_fn = svfs_write;
1075         ops.seek_fn = svfs_seek;
1076         ops.flush_fn = svfs_flush;
1077         ops.close_fn = svfs_close;
1078         ops.exit_fn = svfs_exit;
1079         ops.lock_fn = svfs_lock;
1080         ops.setfileinfo_fn = svfs_setfileinfo;
1081         ops.qfileinfo_fn = svfs_qfileinfo;
1082         ops.fsinfo_fn = svfs_fsinfo;
1083         ops.lpq_fn = svfs_lpq;
1084         ops.search_first_fn = svfs_search_first;
1085         ops.search_next_fn = svfs_search_next;
1086         ops.search_close_fn = svfs_search_close;
1087         ops.trans_fn = svfs_trans;
1088         ops.logoff_fn = svfs_logoff;
1089         ops.async_setup_fn = svfs_async_setup;
1090         ops.cancel_fn = svfs_cancel;
1091
1092         /* register ourselves with the NTVFS subsystem. We register
1093            under names 'simple'
1094         */
1095
1096         ops.type = NTVFS_DISK;
1097         ops.name = "simple";
1098         ret = ntvfs_register(&ops, &vers);
1099
1100         if (!NT_STATUS_IS_OK(ret)) {
1101                 DEBUG(0,("Failed to register simple backend with name: %s!\n",
1102                          ops.name));
1103         }
1104
1105         return ret;
1106 }