source/smbwrapper/smbw.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 2.0
   4    SMB wrapper functions
   5    Copyright (C) Andrew Tridgell 1998
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23 #include "wrapper.h"
  24
  25 pstring smb_cwd;
  26
  27 static struct smbw_file *smbw_files;
  28 static struct smbw_server *smbw_srvs;
  29
  30 struct bitmap *smbw_file_bmap;
  31 extern pstring global_myname;
  32 extern int DEBUGLEVEL;
  33
  34 int smbw_busy=0;
  35
  36 /*****************************************************
  37 initialise structures
  38 *******************************************************/
  39 void smbw_init(void)
  40 {
  41         extern BOOL in_client;
  42         static int initialised;
  43         static pstring servicesf = CONFIGFILE;
  44         extern FILE *dbf;
  45         char *p;
  46
  47         if (initialised) return;
  48         initialised = 1;
  49
  50         smbw_busy++;
  51
  52         DEBUGLEVEL = 0;
  53         setup_logging("smbw",True);
  54
  55         dbf = stderr;
  56
  57         if ((p=getenv("SMBW_LOGFILE"))) {
  58                 dbf = fopen(p, "a");
  59         }
  60
  61         smbw_file_bmap = bitmap_allocate(SMBW_MAX_OPEN);
  62         if (!smbw_file_bmap) {
  63                 exit(1);
  64         }
  65
  66         charset_initialise();
  67
  68         in_client = True;
  69
  70         load_interfaces();
  71
  72         lp_load(servicesf,True,False,False);
  73
  74         get_myname(global_myname,NULL);
  75
  76         if ((p=getenv("SMBW_DEBUG"))) {
  77                 DEBUGLEVEL = atoi(p);
  78         }
  79
  80         if ((p=getenv(SMBW_PWD_ENV))) {
  81                 pstrcpy(smb_cwd, p);
  82                 DEBUG(4,("Initial cwd from smb_cwd is %s\n", smb_cwd));
  83         } else {
  84                 sys_getwd(smb_cwd);
  85                 DEBUG(4,("Initial cwd from getwd is %s\n", smb_cwd));
  86         }
  87         smbw_busy--;
  88
  89         set_maxfiles();
  90 }
  91
  92 /*****************************************************
  93 determine if a file descriptor is a smb one
  94 *******************************************************/
  95 int smbw_fd(int fd)
  96 {
  97         if (smbw_busy) return 0;
  98         return smbw_file_bmap && bitmap_query(smbw_file_bmap, fd);
  99 }
 100
 101 /*****************************************************
 102 a crude inode number generator
 103 *******************************************************/
 104 ino_t smbw_inode(const char *name)
 105 {
 106         return (ino_t)str_checksum(name);
 107 }
 108
 109 /*****************************************************
 110 remove redundent stuff from a filename
 111 *******************************************************/
 112 void clean_fname(char *name)
 113 {
 114         char *p, *p2;
 115         int l;
 116         int modified = 1;
 117
 118         if (!name) return;
 119
 120         while (modified) {
 121                 modified = 0;
 122
 123                 DEBUG(5,("cleaning %s\n", name));
 124
 125                 if ((p=strstr(name,"/./"))) {
 126                         modified = 1;
 127                         while (*p) {
 128                                 p[0] = p[2];
 129                                 p++;
 130                         }
 131                 }
 132
 133                 if ((p=strstr(name,"//"))) {
 134                         modified = 1;
 135                         while (*p) {
 136                                 p[0] = p[1];
 137                                 p++;
 138                         }
 139                 }
 140
 141                 if (strcmp(name,"/../")==0) {
 142                         modified = 1;
 143                         name[1] = 0;
 144                 }
 145
 146                 if ((p=strstr(name,"/../"))) {
 147                         modified = 1;
 148                         for (p2=(p>name?p-1:p);p2>name;p2--) {
 149                                 if (p2[0] == '/') break;
 150                         }
 151                         while (*p2) {
 152                                 p2[0] = p2[3];
 153                                 p2++;
 154                         }
 155                 }
 156
 157                 if (strcmp(name,"/..")==0) {
 158                         modified = 1;
 159                         name[1] = 0;
 160                 }
 161
 162                 l = strlen(name);
 163                 p = l>=3?(name+l-3):name;
 164                 if (strcmp(p,"/..")==0) {
 165                         modified = 1;
 166                         for (p2=p-1;p2>name;p2--) {
 167                                 if (p2[0] == '/') break;
 168                         }
 169                         if (p2==name) {
 170                                 p[0] = '/';
 171                                 p[1] = 0;
 172                         } else {
 173                                 p2[0] = 0;
 174                         }
 175                 }
 176
 177                 l = strlen(name);
 178                 p = l>=2?(name+l-2):name;
 179                 if (strcmp(p,"/.")==0) {
 180                         if (p == name) {
 181                                 p[1] = 0;
 182                         } else {
 183                                 p[0] = 0;
 184                         }
 185                 }
 186
 187                 if (strncmp(p=name,"./",2) == 0) {
 188                         modified = 1;
 189                         do {
 190                                 p[0] = p[2];
 191                         } while (*p++);
 192                 }
 193
 194                 l = strlen(p=name);
 195                 if (l > 1 && p[l-1] == '/') {
 196                         modified = 1;
 197                         p[l-1] = 0;
 198                 }
 199         }
 200 }
 201
 202
 203 /*****************************************************
 204 parse a smb path into its components.
 205 *******************************************************/
 206 char *smbw_parse_path(const char *fname, char *server, char *share, char *path)
 207 {
 208         static pstring s;
 209         char *p, *p2;
 210         int len = strlen(SMBW_PREFIX)-1;
 211
 212         *server = *share = *path = 0;
 213
 214         if (fname[0] == '/') {
 215                 pstrcpy(s, fname);
 216         } else {
 217                 slprintf(s,sizeof(s)-1, "%s/%s", smb_cwd, fname);
 218         }
 219         clean_fname(s);
 220
 221         DEBUG(5,("cleaned %s (fname=%s cwd=%s)\n",
 222                  s, fname, smb_cwd));
 223
 224         if (strncmp(s,SMBW_PREFIX,len) ||
 225             (s[len] != '/' && s[len] != 0)) return s;
 226
 227         p = s + len;
 228         if (*p == '/') p++;
 229
 230         p2 = strchr(p,'/');
 231
 232         if (p2) {
 233                 len = (int)(p2-p);
 234         } else {
 235                 len = strlen(p);
 236         }
 237
 238         len = MIN(len,sizeof(fstring)-1);
 239
 240         strncpy(server, p, len);
 241         server[len] = 0;
 242
 243         p = p2;
 244         if (!p) {
 245                 if (len == 0) {
 246                         char *workgroup = getenv("SMBW_WORKGROUP");
 247                         if (!workgroup) workgroup = lp_workgroup();
 248                         slprintf(server,sizeof(fstring)-1, "%s#1D", workgroup);
 249                 }
 250                 fstrcpy(share,"IPC$");
 251                 pstrcpy(path,"");
 252                 goto ok;
 253         }
 254
 255         p++;
 256         p2 = strchr(p,'/');
 257
 258         if (p2) {
 259                 len = (int)(p2-p);
 260         } else {
 261                 len = strlen(p);
 262         }
 263
 264         len = MIN(len,sizeof(fstring)-1);
 265
 266         strncpy(share, p, len);
 267         share[len] = 0;
 268
 269         p = p2;
 270         if (!p) {
 271                 pstrcpy(path,"\\");
 272                 goto ok;
 273         }
 274
 275         pstrcpy(path,p);
 276
 277         string_sub(path, "/", "\\");
 278
 279  ok:
 280         DEBUG(5,("parsed path name=%s cwd=%s [%s] [%s] [%s]\n",
 281                  fname, smb_cwd,
 282                  server, share, path));
 283
 284         return s;
 285 }
 286
 287 /*****************************************************
 288 determine if a path name (possibly relative) is in the
 289 smb name space
 290 *******************************************************/
 291 int smbw_path(const char *path)
 292 {
 293         fstring server, share;
 294         pstring s;
 295         char *cwd;
 296         int l=strlen(SMBW_PREFIX)-1;
 297
 298         if (path[0] == '/' && strncmp(path,SMBW_PREFIX,l)) {
 299                 return 0;
 300         }
 301
 302         if (smbw_busy) return 0;
 303
 304         smbw_init();
 305
 306         DEBUG(3,("smbw_path(%s)\n", path));
 307
 308         cwd = smbw_parse_path(path, server, share, s);
 309
 310         if (strncmp(cwd,SMBW_PREFIX,l) == 0 &&
 311             (cwd[l] == '/' || cwd[l] == 0)) {
 312                 return 1;
 313         }
 314
 315         return 0;
 316 }
 317
 318 /*****************************************************
 319 return a unix errno from a SMB error pair
 320 *******************************************************/
 321 int smbw_errno(struct cli_state *c)
 322 {
 323         uint8 eclass;
 324         uint32 ecode;
 325         int ret;
 326
 327         ret = cli_error(c, &eclass, &ecode);
 328
 329         if (ret) {
 330                 DEBUG(3,("smbw_error %d %d (0x%x) -> %d\n",
 331                          (int)eclass, (int)ecode, (int)ecode, ret));
 332         }
 333         return ret;
 334 }
 335
 336 /*****************************************************
 337 return a connection to a server (existing or new)
 338 *******************************************************/
 339 struct smbw_server *smbw_server(char *server, char *share)
 340 {
 341         struct smbw_server *srv=NULL;
 342         struct cli_state c;
 343         char *username;
 344         char *password;
 345         char *workgroup;
 346         struct nmb_name called, calling;
 347         char *p, *server_n = server;
 348         fstring group;
 349
 350         ZERO_STRUCT(c);
 351
 352         username = getenv("SMBW_USER");
 353         if (!username) username = getenv("USER");
 354         if (!username) username = "guest";
 355
 356         workgroup = getenv("SMBW_WORKGROUP");
 357         if (!workgroup) workgroup = lp_workgroup();
 358
 359         password = getenv("SMBW_PASSWORD");
 360         if (!password) password = "";
 361
 362         /* try to use an existing connection */
 363         for (srv=smbw_srvs;srv;srv=srv->next) {
 364                 if (strcmp(server,srv->server_name)==0 &&
 365                     strcmp(share,srv->share_name)==0) return srv;
 366         }
 367
 368         if (server[0] == 0) {
 369                 errno = EPERM;
 370                 return NULL;
 371         }
 372
 373         make_nmb_name(&calling, global_myname, 0x0, "");
 374         make_nmb_name(&called , server, 0x20, "");
 375
 376         DEBUG(5,("server_n=[%s] server=[%s]\n", server_n, server));
 377
 378         if ((p=strchr(server_n,'#')) && strcmp(p+1,"1D")==0) {
 379                 struct in_addr ip;
 380                 fstrcpy(group, server_n);
 381                 p = strchr(group,'#');
 382                 *p = 0;
 383                 if (!find_master(group, &ip)) {
 384                         errno = ENOENT;
 385                         return NULL;
 386                 }
 387                 fstrcpy(group, inet_ntoa(ip));
 388                 server_n = group;
 389         }
 390
 391         DEBUG(5,(" -> server_n=[%s] server=[%s]\n", server_n, server));
 392
 393  again:
 394         /* have to open a new connection */
 395         if (!cli_initialise(&c) || !cli_connect(&c, server_n, NULL)) {
 396                 errno = ENOENT;
 397                 return NULL;
 398         }
 399
 400         if (!cli_session_request(&c, &calling, &called)) {
 401                 cli_shutdown(&c);
 402                 if (strcmp(called.name, "*SMBSERVER")) {
 403                         make_nmb_name(&called , "*SMBSERVER", 0x20, "");
 404                         goto again;
 405                 }
 406                 errno = ENOENT;
 407                 return NULL;
 408         }
 409
 410
 411         if (!cli_negprot(&c)) {
 412                 cli_shutdown(&c);
 413                 errno = ENOENT;
 414                 return NULL;
 415         }
 416
 417         if (!cli_session_setup(&c, username,
 418                                password, strlen(password),
 419                                password, strlen(password),
 420                                workgroup)) {
 421                 cli_shutdown(&c);
 422                 errno = EPERM;
 423                 return NULL;
 424         }
 425
 426         if (!cli_send_tconX(&c, share, "?????",
 427                             password, strlen(password)+1)) {
 428                 errno = smbw_errno(&c);
 429                 cli_shutdown(&c);
 430                 return NULL;
 431         }
 432
 433         srv = (struct smbw_server *)malloc(sizeof(*srv));
 434         if (!srv) {
 435                 errno = ENOMEM;
 436                 goto failed;
 437         }
 438
 439         ZERO_STRUCTP(srv);
 440
 441         srv->cli = c;
 442
 443         srv->dev = (dev_t)(str_checksum(server) ^ str_checksum(share));
 444
 445         srv->server_name = strdup(server);
 446         if (!srv->server_name) {
 447                 errno = ENOMEM;
 448                 goto failed;
 449         }
 450
 451         srv->share_name = strdup(share);
 452         if (!srv->share_name) {
 453                 errno = ENOMEM;
 454                 goto failed;
 455         }
 456
 457         /* some programs play with file descriptors fairly intimately. We
 458            try to get out of the way by duping to a high fd number */
 459         if (fcntl(SMBW_CLI_FD + srv->cli.fd, F_GETFD) && errno == EBADF) {
 460                 if (dup2(srv->cli.fd,SMBW_CLI_FD+srv->cli.fd) ==
 461                     srv->cli.fd+SMBW_CLI_FD) {
 462                         close(srv->cli.fd);
 463                         srv->cli.fd += SMBW_CLI_FD;
 464                 }
 465         }
 466
 467         DLIST_ADD(smbw_srvs, srv);
 468
 469         return srv;
 470
 471  failed:
 472         cli_shutdown(&c);
 473         if (!srv) return NULL;
 474
 475         if (srv->server_name) free(srv->server_name);
 476         if (srv->share_name) free(srv->share_name);
 477         free(srv);
 478         return NULL;
 479 }
 480
 481
 482 /*****************************************************
 483 map a fd to a smbw_file structure
 484 *******************************************************/
 485 struct smbw_file *smbw_file(int fd)
 486 {
 487         struct smbw_file *file;
 488
 489         for (file=smbw_files;file;file=file->next) {
 490                 if (file->fd == fd) return file;
 491         }
 492         return NULL;
 493 }
 494
 495 /*****************************************************
 496 a wrapper for open()
 497 *******************************************************/
 498 int smbw_open(const char *fname, int flags, mode_t mode)
 499 {
 500         fstring server, share;
 501         pstring path;
 502         struct smbw_server *srv=NULL;
 503         int eno, fd = -1;
 504         struct smbw_file *file=NULL;
 505
 506         smbw_init();
 507
 508         if (!fname) {
 509                 errno = EINVAL;
 510                 return -1;
 511         }
 512
 513         smbw_busy++;
 514
 515         /* work out what server they are after */
 516         smbw_parse_path(fname, server, share, path);
 517
 518         /* get a connection to the server */
 519         srv = smbw_server(server, share);
 520         if (!srv) {
 521                 /* smbw_server sets errno */
 522                 goto failed;
 523         }
 524
 525         if (path[strlen(path)-1] == '\\') {
 526                 fd = -1;
 527         } else {
 528                 fd = cli_open(&srv->cli, path, flags, DENY_NONE);
 529         }
 530         if (fd == -1) {
 531                 /* it might be a directory. Maybe we should use chkpath? */
 532                 fd = smbw_dir_open(fname);
 533                 smbw_busy--;
 534                 return fd;
 535         }
 536         if (fd == -1) {
 537                 errno = eno;
 538                 goto failed;
 539         }
 540
 541         file = (struct smbw_file *)malloc(sizeof(*file));
 542         if (!file) {
 543                 errno = ENOMEM;
 544                 goto failed;
 545         }
 546
 547         ZERO_STRUCTP(file);
 548
 549         file->f = (struct smbw_filedes *)malloc(sizeof(*(file->f)));
 550         if (!file->f) {
 551                 errno = ENOMEM;
 552                 goto failed;
 553         }
 554
 555         ZERO_STRUCTP(file->f);
 556
 557         file->f->cli_fd = fd;
 558         file->f->fname = strdup(path);
 559         if (!file->f->fname) {
 560                 errno = ENOMEM;
 561                 goto failed;
 562         }
 563         file->srv = srv;
 564         file->fd = open(SMBW_DUMMY, O_WRONLY);
 565         if (file->fd == -1) {
 566                 errno = EMFILE;
 567                 goto failed;
 568         }
 569
 570         if (bitmap_query(smbw_file_bmap, file->fd)) {
 571                 DEBUG(0,("ERROR: fd used in smbw_open\n"));
 572                 errno = EIO;
 573                 goto failed;
 574         }
 575
 576         file->f->ref_count=1;
 577
 578         bitmap_set(smbw_file_bmap, file->fd);
 579
 580         DLIST_ADD(smbw_files, file);
 581
 582         DEBUG(4,("opened %s\n", fname));
 583
 584         smbw_busy--;
 585         return file->fd;
 586
 587  failed:
 588         if (fd != -1) {
 589                 cli_close(&srv->cli, fd);
 590         }
 591         if (file) {
 592                 if (file->f) {
 593                         if (file->f->fname) {
 594                                 free(file->f->fname);
 595                         }
 596                         free(file->f);
 597                 }
 598                 free(file);
 599         }
 600         smbw_busy--;
 601         return -1;
 602 }
 603
 604
 605 /*****************************************************
 606 a wrapper for pread()
 607 *******************************************************/
 608 ssize_t smbw_pread(int fd, void *buf, size_t count, off_t ofs)
 609 {
 610         struct smbw_file *file;
 611         int ret;
 612
 613         smbw_busy++;
 614
 615         file = smbw_file(fd);
 616         if (!file) {
 617                 errno = EBADF;
 618                 smbw_busy--;
 619                 return -1;
 620         }
 621
 622         ret = cli_read(&file->srv->cli, file->f->cli_fd, buf, ofs, count);
 623
 624         if (ret == -1) {
 625                 errno = smbw_errno(&file->srv->cli);
 626                 smbw_busy--;
 627                 return -1;
 628         }
 629
 630         smbw_busy--;
 631         return ret;
 632 }
 633
 634 /*****************************************************
 635 a wrapper for read()
 636 *******************************************************/
 637 ssize_t smbw_read(int fd, void *buf, size_t count)
 638 {
 639         struct smbw_file *file;
 640         int ret;
 641
 642         smbw_busy++;
 643
 644         file = smbw_file(fd);
 645         if (!file) {
 646                 errno = EBADF;
 647                 smbw_busy--;
 648                 return -1;
 649         }
 650
 651         ret = cli_read(&file->srv->cli, file->f->cli_fd, buf,
 652                        file->f->offset, count);
 653
 654         if (ret == -1) {
 655                 errno = smbw_errno(&file->srv->cli);
 656                 smbw_busy--;
 657                 return -1;
 658         }
 659
 660         file->f->offset += ret;
 661
 662         smbw_busy--;
 663         return ret;
 664 }
 665
 666
 667
 668 /*****************************************************
 669 a wrapper for write()
 670 *******************************************************/
 671 ssize_t smbw_write(int fd, void *buf, size_t count)
 672 {
 673         struct smbw_file *file;
 674         int ret;
 675
 676         smbw_busy++;
 677
 678         file = smbw_file(fd);
 679         if (!file) {
 680                 DEBUG(3,("bad fd in read\n"));
 681                 errno = EBADF;
 682                 smbw_busy--;
 683                 return -1;
 684         }
 685
 686         ret = cli_write(&file->srv->cli, file->f->cli_fd, buf, file->f->offset, count);
 687
 688         if (ret == -1) {
 689                 errno = smbw_errno(&file->srv->cli);
 690                 smbw_busy--;
 691                 return -1;
 692         }
 693
 694         file->f->offset += ret;
 695
 696         smbw_busy--;
 697         return ret;
 698 }
 699
 700 /*****************************************************
 701 a wrapper for pwrite()
 702 *******************************************************/
 703 ssize_t smbw_pwrite(int fd, void *buf, size_t count, off_t ofs)
 704 {
 705         struct smbw_file *file;
 706         int ret;
 707
 708         smbw_busy++;
 709
 710         file = smbw_file(fd);
 711         if (!file) {
 712                 DEBUG(3,("bad fd in read\n"));
 713                 errno = EBADF;
 714                 smbw_busy--;
 715                 return -1;
 716         }
 717
 718         ret = cli_write(&file->srv->cli, file->f->cli_fd, buf, ofs, count);
 719
 720         if (ret == -1) {
 721                 errno = smbw_errno(&file->srv->cli);
 722                 smbw_busy--;
 723                 return -1;
 724         }
 725
 726         smbw_busy--;
 727         return ret;
 728 }
 729
 730 /*****************************************************
 731 a wrapper for close()
 732 *******************************************************/
 733 int smbw_close(int fd)
 734 {
 735         struct smbw_file *file;
 736
 737         smbw_busy++;
 738
 739         file = smbw_file(fd);
 740         if (!file) {
 741                 int ret = smbw_dir_close(fd);
 742                 smbw_busy--;
 743                 return ret;
 744         }
 745
 746         if (file->f->ref_count == 1 &&
 747             !cli_close(&file->srv->cli, file->f->cli_fd)) {
 748                 errno = smbw_errno(&file->srv->cli);
 749                 smbw_busy--;
 750                 return -1;
 751         }
 752
 753
 754         bitmap_clear(smbw_file_bmap, file->fd);
 755         close(file->fd);
 756
 757         DLIST_REMOVE(smbw_files, file);
 758
 759         file->f->ref_count--;
 760         if (file->f->ref_count == 0) {
 761                 free(file->f->fname);
 762                 free(file->f);
 763         }
 764         ZERO_STRUCTP(file);
 765         free(file);
 766
 767         smbw_busy--;
 768
 769         return 0;
 770 }
 771
 772
 773 /*****************************************************
 774 a wrapper for fcntl()
 775 *******************************************************/
 776 int smbw_fcntl(int fd, int cmd, long arg)
 777 {
 778         return 0;
 779 }
 780
 781
 782 /*****************************************************
 783 a wrapper for access()
 784 *******************************************************/
 785 int smbw_access(const char *name, int mode)
 786 {
 787         struct stat st;
 788         /* how do we map this properly ?? */
 789         return smbw_stat(name, &st);
 790 }
 791
 792 /*****************************************************
 793 a wrapper for realink() - needed for correct errno setting
 794 *******************************************************/
 795 int smbw_readlink(const char *path, char *buf, size_t bufsize)
 796 {
 797         struct stat st;
 798         int ret;
 799
 800         ret = smbw_stat(path, &st);
 801         if (ret != 0) {
 802                 DEBUG(4,("readlink(%s) failed\n", path));
 803                 return -1;
 804         }
 805
 806         /* it exists - say it isn't a link */
 807         DEBUG(4,("readlink(%s) not a link\n", path));
 808
 809         errno = EINVAL;
 810         return -1;
 811 }
 812
 813
 814 /*****************************************************
 815 a wrapper for unlink()
 816 *******************************************************/
 817 int smbw_unlink(const char *fname)
 818 {
 819         struct smbw_server *srv;
 820         fstring server, share;
 821         pstring path;
 822
 823         if (!fname) {
 824                 errno = EINVAL;
 825                 return -1;
 826         }
 827
 828         smbw_init();
 829
 830         smbw_busy++;
 831
 832         /* work out what server they are after */
 833         smbw_parse_path(fname, server, share, path);
 834
 835         /* get a connection to the server */
 836         srv = smbw_server(server, share);
 837         if (!srv) {
 838                 /* smbw_server sets errno */
 839                 goto failed;
 840         }
 841
 842         if (strncmp(srv->cli.dev, "LPT", 3) == 0) {
 843                 int job = smbw_stat_printjob(srv, path, NULL, NULL);
 844                 if (job == -1) {
 845                         goto failed;
 846                 }
 847                 if (cli_printjob_del(&srv->cli, job) != 0) {
 848                         goto failed;
 849                 }
 850         } else if (!cli_unlink(&srv->cli, path)) {
 851                 errno = smbw_errno(&srv->cli);
 852                 goto failed;
 853         }
 854
 855         smbw_busy--;
 856         return 0;
 857
 858  failed:
 859         smbw_busy--;
 860         return -1;
 861 }
 862
 863
 864 /*****************************************************
 865 a wrapper for rename()
 866 *******************************************************/
 867 int smbw_rename(const char *oldname, const char *newname)
 868 {
 869         struct smbw_server *srv;
 870         fstring server1, share1;
 871         pstring path1;
 872         fstring server2, share2;
 873         pstring path2;
 874
 875         if (!oldname || !newname) {
 876                 errno = EINVAL;
 877                 return -1;
 878         }
 879
 880         smbw_init();
 881
 882         smbw_busy++;
 883
 884         /* work out what server they are after */
 885         smbw_parse_path(oldname, server1, share1, path1);
 886         smbw_parse_path(newname, server2, share2, path2);
 887
 888         if (strcmp(server1, server2) || strcmp(share1, share2)) {
 889                 /* can't cross filesystems */
 890                 errno = EXDEV;
 891                 return -1;
 892         }
 893
 894         /* get a connection to the server */
 895         srv = smbw_server(server1, share1);
 896         if (!srv) {
 897                 /* smbw_server sets errno */
 898                 goto failed;
 899         }
 900
 901         if (!cli_rename(&srv->cli, path1, path2)) {
 902                 errno = smbw_errno(&srv->cli);
 903                 goto failed;
 904         }
 905
 906         smbw_busy--;
 907         return 0;
 908
 909  failed:
 910         smbw_busy--;
 911         return -1;
 912 }
 913
 914
 915 /*****************************************************
 916 a wrapper for utime and utimes
 917 *******************************************************/
 918 static int smbw_settime(const char *fname, time_t t)
 919 {
 920         struct smbw_server *srv;
 921         fstring server, share;
 922         pstring path;
 923         uint32 mode;
 924
 925         if (!fname) {
 926                 errno = EINVAL;
 927                 return -1;
 928         }
 929
 930         smbw_init();
 931
 932         smbw_busy++;
 933
 934         /* work out what server they are after */
 935         smbw_parse_path(fname, server, share, path);
 936
 937         /* get a connection to the server */
 938         srv = smbw_server(server, share);
 939         if (!srv) {
 940                 /* smbw_server sets errno */
 941                 goto failed;
 942         }
 943
 944         if (!cli_getatr(&srv->cli, path, &mode, NULL, NULL)) {
 945                 errno = smbw_errno(&srv->cli);
 946                 goto failed;
 947         }
 948
 949         if (!cli_setatr(&srv->cli, path, mode, t)) {
 950                 errno = smbw_errno(&srv->cli);
 951                 goto failed;
 952         }
 953
 954         smbw_busy--;
 955         return 0;
 956
 957  failed:
 958         smbw_busy--;
 959         return -1;
 960 }
 961
 962 /*****************************************************
 963 a wrapper for utime
 964 *******************************************************/
 965 int smbw_utime(const char *fname, void *buf)
 966 {
 967         struct utimbuf *tbuf = (struct utimbuf *)buf;
 968         return smbw_settime(fname, tbuf?tbuf->modtime:time(NULL));
 969 }
 970
 971 /*****************************************************
 972 a wrapper for utime
 973 *******************************************************/
 974 int smbw_utimes(const char *fname, void *buf)
 975 {
 976         struct timeval *tbuf = (struct timeval *)buf;
 977         return smbw_settime(fname, tbuf?tbuf->tv_sec:time(NULL));
 978 }
 979
 980
 981 /*****************************************************
 982 a wrapper for chown()
 983 *******************************************************/
 984 int smbw_chown(const char *fname, uid_t owner, gid_t group)
 985 {
 986         struct smbw_server *srv;
 987         fstring server, share;
 988         pstring path;
 989         uint32 mode;
 990
 991         if (!fname) {
 992                 errno = EINVAL;
 993                 return -1;
 994         }
 995
 996         smbw_init();
 997
 998         smbw_busy++;
 999
1000         /* work out what server they are after */
1001         smbw_parse_path(fname, server, share, path);
1002
1003         /* get a connection to the server */
1004         srv = smbw_server(server, share);
1005         if (!srv) {
1006                 /* smbw_server sets errno */
1007                 goto failed;
1008         }
1009
1010         if (!cli_getatr(&srv->cli, path, &mode, NULL, NULL)) {
1011                 errno = smbw_errno(&srv->cli);
1012                 goto failed;
1013         }
1014
1015         /* assume success */
1016
1017         smbw_busy--;
1018         return 0;
1019
1020  failed:
1021         smbw_busy--;
1022         return -1;
1023 }
1024
1025 /*****************************************************
1026 a wrapper for chmod()
1027 *******************************************************/
1028 int smbw_chmod(const char *fname, mode_t newmode)
1029 {
1030         struct smbw_server *srv;
1031         fstring server, share;
1032         pstring path;
1033         uint32 mode;
1034
1035         if (!fname) {
1036                 errno = EINVAL;
1037                 return -1;
1038         }
1039
1040         smbw_init();
1041
1042         smbw_busy++;
1043
1044         /* work out what server they are after */
1045         smbw_parse_path(fname, server, share, path);
1046
1047         /* get a connection to the server */
1048         srv = smbw_server(server, share);
1049         if (!srv) {
1050                 /* smbw_server sets errno */
1051                 goto failed;
1052         }
1053
1054         if (!cli_getatr(&srv->cli, path, &mode, NULL, NULL)) {
1055                 errno = smbw_errno(&srv->cli);
1056                 goto failed;
1057         }
1058
1059         /* assume success for the moment - need to add attribute mapping */
1060
1061         smbw_busy--;
1062         return 0;
1063
1064  failed:
1065         smbw_busy--;
1066         return -1;
1067 }
1068
1069 /*****************************************************
1070 a wrapper for lseek()
1071 *******************************************************/
1072 off_t smbw_lseek(int fd, off_t offset, int whence)
1073 {
1074         struct smbw_file *file;
1075         uint32 size;
1076
1077         smbw_busy++;
1078
1079         file = smbw_file(fd);
1080         if (!file) {
1081                 off_t ret = smbw_dir_lseek(fd, offset, whence);
1082                 smbw_busy--;
1083                 return ret;
1084         }
1085
1086         switch (whence) {
1087         case SEEK_SET:
1088                 file->f->offset = offset;
1089                 break;
1090         case SEEK_CUR:
1091                 file->f->offset += offset;
1092                 break;
1093         case SEEK_END:
1094                 if (!cli_qfileinfo(&file->srv->cli, file->f->cli_fd,
1095                                    NULL, &size, NULL, NULL, NULL) &&
1096                     !cli_getattrE(&file->srv->cli, file->f->cli_fd,
1097                                   NULL, &size, NULL, NULL, NULL)) {
1098                         errno = EINVAL;
1099                         smbw_busy--;
1100                         return -1;
1101                 }
1102                 file->f->offset = size + offset;
1103                 break;
1104         }
1105
1106         smbw_busy--;
1107         return file->f->offset;
1108 }
1109
1110
1111 /*****************************************************
1112 a wrapper for dup()
1113 *******************************************************/
1114 int smbw_dup(int fd)
1115 {
1116         int fd2;
1117         struct smbw_file *file, *file2;
1118
1119         smbw_busy++;
1120
1121         file = smbw_file(fd);
1122         if (!file) {
1123                 errno = EBADF;
1124                 goto failed;
1125         }
1126
1127         fd2 = dup(file->fd);
1128         if (fd2 == -1) {
1129                 goto failed;
1130         }
1131
1132         if (bitmap_query(smbw_file_bmap, fd2)) {
1133                 DEBUG(0,("ERROR: fd already open in dup!\n"));
1134                 errno = EIO;
1135                 goto failed;
1136         }
1137
1138         file2 = (struct smbw_file *)malloc(sizeof(*file2));
1139         if (!file2) {
1140                 close(fd2);
1141                 errno = ENOMEM;
1142                 goto failed;
1143         }
1144
1145         ZERO_STRUCTP(file2);
1146
1147         *file2 = *file;
1148         file2->fd = fd2;
1149
1150         file->f->ref_count++;
1151
1152         bitmap_set(smbw_file_bmap, fd2);
1153
1154         DLIST_ADD(smbw_files, file2);
1155
1156         smbw_busy--;
1157         return fd2;
1158
1159  failed:
1160         smbw_busy--;
1161         return -1;
1162 }
1163
1164
1165 /*****************************************************
1166 a wrapper for dup2()
1167 *******************************************************/
1168 int smbw_dup2(int fd, int fd2)
1169 {
1170         struct smbw_file *file, *file2;
1171
1172         smbw_busy++;
1173
1174         file = smbw_file(fd);
1175         if (!file) {
1176                 errno = EBADF;
1177                 goto failed;
1178         }
1179
1180         if (bitmap_query(smbw_file_bmap, fd2)) {
1181                 DEBUG(0,("ERROR: fd already open in dup2!\n"));
1182                 errno = EIO;
1183                 goto failed;
1184         }
1185
1186         if (dup2(file->fd, fd2) != fd2) {
1187                 goto failed;
1188         }
1189
1190         file2 = (struct smbw_file *)malloc(sizeof(*file2));
1191         if (!file2) {
1192                 close(fd2);
1193                 errno = ENOMEM;
1194                 goto failed;
1195         }
1196
1197         ZERO_STRUCTP(file2);
1198
1199         *file2 = *file;
1200         file2->fd = fd2;
1201
1202         file->f->ref_count++;
1203
1204         bitmap_set(smbw_file_bmap, fd2);
1205
1206         DLIST_ADD(smbw_files, file2);
1207
1208         smbw_busy--;
1209         return fd2;
1210
1211  failed:
1212         smbw_busy--;
1213         return -1;
1214 }
1215