flist.c

   1 /*
   2    Copyright (C) Andrew Tridgell 1996
   3    Copyright (C) Paul Mackerras 1996
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18 */
  19
  20 /* generate and receive file lists */
  21
  22 #include "rsync.h"
  23
  24 extern struct stats stats;
  25
  26 extern int verbose;
  27 extern int am_server;
  28 extern int always_checksum;
  29
  30 extern int cvs_exclude;
  31
  32 extern int recurse;
  33
  34 extern int one_file_system;
  35 extern int make_backups;
  36 extern int preserve_links;
  37 extern int preserve_hard_links;
  38 extern int preserve_perms;
  39 extern int preserve_devices;
  40 extern int preserve_uid;
  41 extern int preserve_gid;
  42 extern int preserve_times;
  43 extern int relative_paths;
  44 extern int copy_links;
  45 extern int copy_unsafe_links;
  46 extern int remote_version;
  47 extern int io_error;
  48 extern int sanitize_paths;
  49
  50 static char topsrcname[MAXPATHLEN];
  51
  52 static struct exclude_struct **local_exclude_list;
  53
  54 static void clean_flist(struct file_list *flist, int strip_root);
  55
  56
  57 static void list_file_entry(struct file_struct *f)
  58 {
  59         char perms[11] = "----------";
  60         char *perm_map = "rwxrwxrwx";
  61         int i;
  62
  63         if (!f->basename)
  64                 /* this can happen if duplicate names were removed */
  65                 return;
  66
  67         for (i=0;i<9;i++) {
  68                 if (f->mode & (1<<i)) perms[9-i] = perm_map[8-i];
  69         }
  70         if (S_ISLNK(f->mode)) perms[0] = 'l';
  71         if (S_ISDIR(f->mode)) perms[0] = 'd';
  72         if (S_ISBLK(f->mode)) perms[0] = 'b';
  73         if (S_ISCHR(f->mode)) perms[0] = 'c';
  74         if (S_ISSOCK(f->mode)) perms[0] = 's';
  75         if (S_ISFIFO(f->mode)) perms[0] = 'p';
  76
  77         if (preserve_links && S_ISLNK(f->mode)) {
  78                 rprintf(FINFO,"%s %11.0f %s %s -> %s\n",
  79                         perms,
  80                         (double)f->length, timestring(f->modtime),
  81                         f_name(f), f->link);
  82         } else {
  83                 rprintf(FINFO,"%s %11.0f %s %s\n",
  84                         perms,
  85                         (double)f->length, timestring(f->modtime), f_name(f));
  86         }
  87 }
  88
  89
  90 int readlink_stat(const char *Path, STRUCT_STAT *Buffer, char *Linkbuf)
  91 {
  92 #if SUPPORT_LINKS
  93         if (copy_links) {
  94                 return do_stat(Path, Buffer);
  95         }
  96         if (do_lstat(Path, Buffer) == -1) {
  97                 return -1;
  98         }
  99         if (S_ISLNK(Buffer->st_mode)) {
 100                 int l;
 101                 if ((l = readlink(Path,Linkbuf,MAXPATHLEN-1)) == -1) {
 102                         return -1;
 103                 }
 104                 Linkbuf[l] = 0;
 105                 if (copy_unsafe_links && (topsrcname[0] != '\0') &&
 106                                     unsafe_symlink(Linkbuf, topsrcname)) {
 107                         return do_stat(Path, Buffer);
 108                 }
 109         }
 110         return 0;
 111 #else
 112         return do_stat(Path, Buffer);
 113 #endif
 114 }
 115
 116 int link_stat(const char *Path, STRUCT_STAT *Buffer)
 117 {
 118 #if SUPPORT_LINKS
 119     if (copy_links) {
 120         return do_stat(Path, Buffer);
 121     } else {
 122         return do_lstat(Path, Buffer);
 123     }
 124 #else
 125     return do_stat(Path, Buffer);
 126 #endif
 127 }
 128
 129 /*
 130   This function is used to check if a file should be included/excluded
 131   from the list of files based on its name and type etc
 132  */
 133 static int match_file_name(char *fname,STRUCT_STAT *st)
 134 {
 135   if (check_exclude(fname,local_exclude_list,st)) {
 136     if (verbose > 2)
 137       rprintf(FINFO,"excluding file %s\n",fname);
 138     return 0;
 139   }
 140   return 1;
 141 }
 142
 143 /* used by the one_file_system code */
 144 static dev_t filesystem_dev;
 145
 146 static void set_filesystem(char *fname)
 147 {
 148   STRUCT_STAT st;
 149   if (link_stat(fname,&st) != 0) return;
 150   filesystem_dev = st.st_dev;
 151 }
 152
 153
 154 static int to_wire_mode(mode_t mode)
 155 {
 156         if (S_ISLNK(mode) && (S_IFLNK != 0120000)) {
 157                 return (mode & ~(_S_IFMT)) | 0120000;
 158         }
 159         return (int)mode;
 160 }
 161
 162 static mode_t from_wire_mode(int mode)
 163 {
 164         if ((mode & (_S_IFMT)) == 0120000 && (S_IFLNK != 0120000)) {
 165                 return (mode & ~(_S_IFMT)) | S_IFLNK;
 166         }
 167         return (mode_t)mode;
 168 }
 169
 170
 171 static void send_directory(int f,struct file_list *flist,char *dir);
 172
 173 static char *flist_dir;
 174
 175
 176 static void send_file_entry(struct file_struct *file,int f,unsigned base_flags)
 177 {
 178         unsigned char flags;
 179         static time_t last_time;
 180         static mode_t last_mode;
 181         static dev_t last_rdev;
 182         static uid_t last_uid;
 183         static gid_t last_gid;
 184         static char lastname[MAXPATHLEN];
 185         char *fname;
 186         int l1,l2;
 187
 188         if (f == -1) return;
 189
 190         if (!file) {
 191                 write_byte(f,0);
 192                 return;
 193         }
 194
 195         fname = f_name(file);
 196
 197         flags = base_flags;
 198
 199         if (file->mode == last_mode) flags |= SAME_MODE;
 200         if (file->rdev == last_rdev) flags |= SAME_RDEV;
 201         if (file->uid == last_uid) flags |= SAME_UID;
 202         if (file->gid == last_gid) flags |= SAME_GID;
 203         if (file->modtime == last_time) flags |= SAME_TIME;
 204
 205         for (l1=0;lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);l1++) ;
 206         l2 = strlen(fname) - l1;
 207
 208         if (l1 > 0) flags |= SAME_NAME;
 209         if (l2 > 255) flags |= LONG_NAME;
 210
 211         /* we must make sure we don't send a zero flags byte or the other
 212            end will terminate the flist transfer */
 213         if (flags == 0 && !S_ISDIR(file->mode)) flags |= FLAG_DELETE;
 214         if (flags == 0) flags |= LONG_NAME;
 215
 216         write_byte(f,flags);
 217         if (flags & SAME_NAME)
 218                 write_byte(f,l1);
 219         if (flags & LONG_NAME)
 220                 write_int(f,l2);
 221         else
 222                 write_byte(f,l2);
 223         write_buf(f,fname+l1,l2);
 224
 225         write_longint(f,file->length);
 226         if (!(flags & SAME_TIME))
 227                 write_int(f,(int)file->modtime);
 228         if (!(flags & SAME_MODE))
 229                 write_int(f,to_wire_mode(file->mode));
 230         if (preserve_uid && !(flags & SAME_UID)) {
 231                 add_uid(file->uid);
 232                 write_int(f,(int)file->uid);
 233         }
 234         if (preserve_gid && !(flags & SAME_GID)) {
 235                 add_gid(file->gid);
 236                 write_int(f,(int)file->gid);
 237         }
 238         if (preserve_devices && IS_DEVICE(file->mode) && !(flags & SAME_RDEV))
 239                 write_int(f,(int)file->rdev);
 240
 241 #if SUPPORT_LINKS
 242         if (preserve_links && S_ISLNK(file->mode)) {
 243                 write_int(f,strlen(file->link));
 244                 write_buf(f,file->link,strlen(file->link));
 245         }
 246 #endif
 247
 248 #if SUPPORT_HARD_LINKS
 249         if (preserve_hard_links && S_ISREG(file->mode)) {
 250                 write_int(f,(int)file->dev);
 251                 write_int(f,(int)file->inode);
 252         }
 253 #endif
 254
 255         if (always_checksum) {
 256                 if (remote_version < 21) {
 257                         write_buf(f,file->sum,2);
 258                 } else {
 259                         write_buf(f,file->sum,MD4_SUM_LENGTH);
 260                 }
 261         }
 262
 263         last_mode = file->mode;
 264         last_rdev = file->rdev;
 265         last_uid = file->uid;
 266         last_gid = file->gid;
 267         last_time = file->modtime;
 268
 269         strlcpy(lastname,fname,MAXPATHLEN);
 270         lastname[MAXPATHLEN-1] = 0;
 271 }
 272
 273
 274
 275 static void receive_file_entry(struct file_struct **fptr,
 276                                unsigned flags,int f)
 277 {
 278         static time_t last_time;
 279         static mode_t last_mode;
 280         static dev_t last_rdev;
 281         static uid_t last_uid;
 282         static gid_t last_gid;
 283         static char lastname[MAXPATHLEN];
 284         char thisname[MAXPATHLEN];
 285         int l1=0,l2=0;
 286         char *p;
 287         struct file_struct *file;
 288
 289         if (flags & SAME_NAME)
 290                 l1 = read_byte(f);
 291
 292         if (flags & LONG_NAME)
 293                 l2 = read_int(f);
 294         else
 295                 l2 = read_byte(f);
 296
 297         file = (struct file_struct *)malloc(sizeof(*file));
 298         if (!file) out_of_memory("receive_file_entry");
 299         memset((char *)file, 0, sizeof(*file));
 300         (*fptr) = file;
 301
 302         if (l2 >= MAXPATHLEN-l1) overflow("receive_file_entry");
 303
 304         strlcpy(thisname,lastname,l1+1);
 305         read_sbuf(f,&thisname[l1],l2);
 306         thisname[l1+l2] = 0;
 307
 308         strlcpy(lastname,thisname,MAXPATHLEN);
 309         lastname[MAXPATHLEN-1] = 0;
 310
 311         clean_fname(thisname);
 312
 313         if (sanitize_paths) {
 314                 sanitize_path(thisname, NULL);
 315         }
 316
 317         if ((p = strrchr(thisname,'/'))) {
 318                 static char *lastdir;
 319                 *p = 0;
 320                 if (lastdir && strcmp(thisname, lastdir)==0) {
 321                         file->dirname = lastdir;
 322                 } else {
 323                         file->dirname = strdup(thisname);
 324                         lastdir = file->dirname;
 325                 }
 326                 file->basename = strdup(p+1);
 327         } else {
 328                 file->dirname = NULL;
 329                 file->basename = strdup(thisname);
 330         }
 331
 332         if (!file->basename) out_of_memory("receive_file_entry 1");
 333
 334
 335         file->flags = flags;
 336         file->length = read_longint(f);
 337         file->modtime = (flags & SAME_TIME) ? last_time : (time_t)read_int(f);
 338         file->mode = (flags & SAME_MODE) ? last_mode : from_wire_mode(read_int(f));
 339         if (preserve_uid)
 340                 file->uid = (flags & SAME_UID) ? last_uid : (uid_t)read_int(f);
 341         if (preserve_gid)
 342                 file->gid = (flags & SAME_GID) ? last_gid : (gid_t)read_int(f);
 343         if (preserve_devices && IS_DEVICE(file->mode))
 344                 file->rdev = (flags & SAME_RDEV) ? last_rdev : (dev_t)read_int(f);
 345
 346         if (preserve_links && S_ISLNK(file->mode)) {
 347                 int l = read_int(f);
 348                 file->link = (char *)malloc(l+1);
 349                 if (!file->link) out_of_memory("receive_file_entry 2");
 350                 read_sbuf(f,file->link,l);
 351                 if (sanitize_paths) {
 352                         sanitize_path(file->link, file->dirname);
 353                 }
 354         }
 355
 356 #if SUPPORT_HARD_LINKS
 357         if (preserve_hard_links && S_ISREG(file->mode)) {
 358                 file->dev = read_int(f);
 359                 file->inode = read_int(f);
 360         }
 361 #endif
 362
 363         if (always_checksum) {
 364                 file->sum = (char *)malloc(MD4_SUM_LENGTH);
 365                 if (!file->sum) out_of_memory("md4 sum");
 366                 if (remote_version < 21) {
 367                         read_buf(f,file->sum,2);
 368                 } else {
 369                         read_buf(f,file->sum,MD4_SUM_LENGTH);
 370                 }
 371         }
 372
 373         last_mode = file->mode;
 374         last_rdev = file->rdev;
 375         last_uid = file->uid;
 376         last_gid = file->gid;
 377         last_time = file->modtime;
 378
 379         if (!preserve_perms) {
 380                 extern int orig_umask;
 381                 /* set an appropriate set of permissions based on original
 382                    permissions and umask. This emulates what GNU cp does */
 383                 file->mode &= ~orig_umask;
 384         }
 385 }
 386
 387
 388 /* determine if a file in a different filesstem should be skipped
 389    when one_file_system is set. We bascally only want to include
 390    the mount points - but they can be hard to find! */
 391 static int skip_filesystem(char *fname, STRUCT_STAT *st)
 392 {
 393         STRUCT_STAT st2;
 394         char *p = strrchr(fname, '/');
 395
 396         /* skip all but directories */
 397         if (!S_ISDIR(st->st_mode)) return 1;
 398
 399         /* if its not a subdirectory then allow */
 400         if (!p) return 0;
 401
 402         *p = 0;
 403         if (link_stat(fname, &st2)) {
 404                 *p = '/';
 405                 return 0;
 406         }
 407         *p = '/';
 408
 409         return (st2.st_dev != filesystem_dev);
 410 }
 411
 412 /* create a file_struct for a named file */
 413 struct file_struct *make_file(int f, char *fname)
 414 {
 415         struct file_struct *file;
 416         STRUCT_STAT st;
 417         char sum[SUM_LENGTH];
 418         char *p;
 419         char cleaned_name[MAXPATHLEN];
 420         char linkbuf[MAXPATHLEN];
 421         extern int delete_excluded;
 422
 423         strlcpy(cleaned_name, fname, MAXPATHLEN);
 424         cleaned_name[MAXPATHLEN-1] = 0;
 425         clean_fname(cleaned_name);
 426         if (sanitize_paths) {
 427                 sanitize_path(cleaned_name, NULL);
 428         }
 429         fname = cleaned_name;
 430
 431         memset(sum,0,SUM_LENGTH);
 432
 433         if (readlink_stat(fname,&st,linkbuf) != 0) {
 434                 io_error = 1;
 435                 rprintf(FERROR,"%s: %s\n",
 436                         fname,strerror(errno));
 437                 return NULL;
 438         }
 439
 440         if (S_ISDIR(st.st_mode) && !recurse) {
 441                 rprintf(FINFO,"skipping directory %s\n",fname);
 442                 return NULL;
 443         }
 444
 445         if (one_file_system && st.st_dev != filesystem_dev) {
 446                 if (skip_filesystem(fname, &st))
 447                         return NULL;
 448         }
 449
 450         /* f is set to -1 when calculating deletion file list */
 451         if (((f != -1) || !delete_excluded) && !match_file_name(fname,&st))
 452                 return NULL;
 453
 454         if (verbose > 2)
 455                 rprintf(FINFO,"make_file(%d,%s)\n",f,fname);
 456
 457         file = (struct file_struct *)malloc(sizeof(*file));
 458         if (!file) out_of_memory("make_file");
 459         memset((char *)file,0,sizeof(*file));
 460
 461         if ((p = strrchr(fname,'/'))) {
 462                 static char *lastdir;
 463                 *p = 0;
 464                 if (lastdir && strcmp(fname, lastdir)==0) {
 465                         file->dirname = lastdir;
 466                 } else {
 467                         file->dirname = strdup(fname);
 468                         lastdir = file->dirname;
 469                 }
 470                 file->basename = strdup(p+1);
 471                 *p = '/';
 472         } else {
 473                 file->dirname = NULL;
 474                 file->basename = strdup(fname);
 475         }
 476
 477         file->modtime = st.st_mtime;
 478         file->length = st.st_size;
 479         file->mode = st.st_mode;
 480         file->uid = st.st_uid;
 481         file->gid = st.st_gid;
 482         file->dev = st.st_dev;
 483         file->inode = st.st_ino;
 484 #ifdef HAVE_ST_RDEV
 485         file->rdev = st.st_rdev;
 486 #endif
 487
 488 #if SUPPORT_LINKS
 489         if (S_ISLNK(st.st_mode)) {
 490                 file->link = strdup(linkbuf);
 491         }
 492 #endif
 493
 494         if (always_checksum) {
 495                 file->sum = (char *)malloc(MD4_SUM_LENGTH);
 496                 if (!file->sum) out_of_memory("md4 sum");
 497                 /* drat. we have to provide a null checksum for non-regular
 498                    files in order to be compatible with earlier versions
 499                    of rsync */
 500                 if (S_ISREG(st.st_mode)) {
 501                         file_checksum(fname,file->sum,st.st_size);
 502                 } else {
 503                         memset(file->sum, 0, MD4_SUM_LENGTH);
 504                 }
 505         }
 506
 507         if (flist_dir) {
 508                 static char *lastdir;
 509                 if (lastdir && strcmp(lastdir, flist_dir)==0) {
 510                         file->basedir = lastdir;
 511                 } else {
 512                         file->basedir = strdup(flist_dir);
 513                         lastdir = file->basedir;
 514                 }
 515         } else {
 516                 file->basedir = NULL;
 517         }
 518
 519         if (!S_ISDIR(st.st_mode))
 520                 stats.total_size += st.st_size;
 521
 522         return file;
 523 }
 524
 525
 526
 527 void send_file_name(int f,struct file_list *flist,char *fname,
 528                            int recursive, unsigned base_flags)
 529 {
 530   struct file_struct *file;
 531
 532   file = make_file(f,fname);
 533
 534   if (!file) return;
 535
 536   if (flist->count >= flist->malloced) {
 537           if (flist->malloced < 1000)
 538                   flist->malloced += 1000;
 539           else
 540                   flist->malloced *= 2;
 541           flist->files = (struct file_struct **)realloc(flist->files,
 542                                                         sizeof(flist->files[0])*
 543                                                         flist->malloced);
 544           if (!flist->files)
 545                   out_of_memory("send_file_name");
 546   }
 547
 548   if (strcmp(file->basename,"")) {
 549     flist->files[flist->count++] = file;
 550     send_file_entry(file,f,base_flags);
 551   }
 552
 553   if (S_ISDIR(file->mode) && recursive) {
 554           struct exclude_struct **last_exclude_list = local_exclude_list;
 555           send_directory(f,flist,f_name(file));
 556           local_exclude_list = last_exclude_list;
 557           return;
 558   }
 559 }
 560
 561
 562
 563 static void send_directory(int f,struct file_list *flist,char *dir)
 564 {
 565         DIR *d;
 566         struct dirent *di;
 567         char fname[MAXPATHLEN];
 568         int l;
 569         char *p;
 570
 571         d = opendir(dir);
 572         if (!d) {
 573                 io_error = 1;
 574                 rprintf(FERROR,"opendir(%s): %s\n",
 575                         dir,strerror(errno));
 576                 return;
 577         }
 578
 579         strlcpy(fname,dir,MAXPATHLEN);
 580         l = strlen(fname);
 581         if (fname[l-1] != '/') {
 582                 if (l == MAXPATHLEN-1) {
 583                         io_error = 1;
 584                         rprintf(FERROR,"skipping long-named directory %s\n",fname);
 585                         closedir(d);
 586                         return;
 587                 }
 588                 strlcat(fname,"/", MAXPATHLEN);
 589                 l++;
 590         }
 591         p = fname + strlen(fname);
 592
 593         local_exclude_list = NULL;
 594
 595         if (cvs_exclude) {
 596                 if (strlen(fname) + strlen(".cvsignore") <= MAXPATHLEN-1) {
 597                         strcpy(p,".cvsignore");
 598                         local_exclude_list = make_exclude_list(fname,NULL,0,0);
 599                 } else {
 600                         io_error = 1;
 601                         rprintf(FINFO,"cannot cvs-exclude in long-named directory %s\n",fname);
 602                 }
 603         }
 604
 605         for (di=readdir(d); di; di=readdir(d)) {
 606                 char *dname = d_name(di);
 607                 if (strcmp(dname,".")==0 ||
 608                     strcmp(dname,"..")==0)
 609                         continue;
 610                 strlcpy(p,dname,MAXPATHLEN-l);
 611                 send_file_name(f,flist,fname,recurse,0);
 612         }
 613
 614         if (local_exclude_list) {
 615                 add_exclude_list("!", &local_exclude_list, 0);
 616         }
 617
 618         closedir(d);
 619 }
 620
 621
 622
 623 struct file_list *send_file_list(int f,int argc,char *argv[])
 624 {
 625         int i,l;
 626         STRUCT_STAT st;
 627         char *p,*dir,*olddir;
 628         char lastpath[MAXPATHLEN]="";
 629         struct file_list *flist;
 630         int64 start_write;
 631
 632         if (verbose && recurse && !am_server && f != -1) {
 633                 rprintf(FINFO,"building file list ... ");
 634                 rflush(FINFO);
 635         }
 636
 637         start_write = stats.total_written;
 638
 639         flist = (struct file_list *)malloc(sizeof(flist[0]));
 640         if (!flist) out_of_memory("send_file_list");
 641
 642         flist->count=0;
 643         flist->malloced = 1000;
 644         flist->files = (struct file_struct **)malloc(sizeof(flist->files[0])*
 645                                                      flist->malloced);
 646         if (!flist->files) out_of_memory("send_file_list");
 647
 648         if (f != -1) {
 649                 io_start_buffering(f);
 650         }
 651
 652         for (i=0;i<argc;i++) {
 653                 char *fname = topsrcname;
 654
 655                 strlcpy(fname,argv[i],MAXPATHLEN);
 656
 657                 l = strlen(fname);
 658                 if (l != 1 && fname[l-1] == '/') {
 659                         if ((l == 2) && (fname[0] == '.')) {
 660                                 /*  Turn ./ into just . rather than ./.
 661                                     This was put in to avoid a problem with
 662                                       rsync -aR --delete from ./
 663                                     The send_file_name() below of ./ was
 664                                     mysteriously preventing deletes */
 665                                 fname[1] = 0;
 666                         } else {
 667                                 strlcat(fname,".",MAXPATHLEN);
 668                         }
 669                 }
 670
 671                 if (link_stat(fname,&st) != 0) {
 672                         io_error=1;
 673                         rprintf(FERROR,"%s : %s\n",fname,strerror(errno));
 674                         continue;
 675                 }
 676
 677                 if (S_ISDIR(st.st_mode) && !recurse) {
 678                         rprintf(FINFO,"skipping directory %s\n",fname);
 679                         continue;
 680                 }
 681
 682                 dir = NULL;
 683                 olddir = NULL;
 684
 685                 if (!relative_paths) {
 686                         p = strrchr(fname,'/');
 687                         if (p) {
 688                                 *p = 0;
 689                                 if (p == fname)
 690                                         dir = "/";
 691                                 else
 692                                         dir = fname;
 693                                 fname = p+1;
 694                         }
 695                 } else if (f != -1 && (p=strrchr(fname,'/'))) {
 696                         /* this ensures we send the intermediate directories,
 697                            thus getting their permissions right */
 698                         *p = 0;
 699                         if (strcmp(lastpath,fname)) {
 700                                 strlcpy(lastpath, fname, sizeof(lastpath));
 701                                 *p = '/';
 702                                 for (p=fname+1; (p=strchr(p,'/')); p++) {
 703                                         int copy_links_saved = copy_links;
 704                                         int recurse_saved = recurse;
 705                                         *p = 0;
 706                                         copy_links = copy_unsafe_links;
 707                                         /* set recurse to 1 to prevent make_file
 708                                            from ignoring directory, but still
 709                                            turn off the recursive parameter to
 710                                            send_file_name */
 711                                         recurse = 1;
 712                                         send_file_name(f, flist, fname, 0, 0);
 713                                         copy_links = copy_links_saved;
 714                                         recurse = recurse_saved;
 715                                         *p = '/';
 716                                 }
 717                         } else {
 718                                 *p = '/';
 719                         }
 720                 }
 721
 722                 if (!*fname)
 723                         fname = ".";
 724
 725                 if (dir && *dir) {
 726                         olddir = push_dir(dir, 1);
 727
 728                         if (!olddir) {
 729                                 io_error=1;
 730                                 rprintf(FERROR,"push_dir %s : %s\n",
 731                                         dir,strerror(errno));
 732                                 continue;
 733                         }
 734
 735                         flist_dir = dir;
 736                 }
 737
 738                 if (one_file_system)
 739                         set_filesystem(fname);
 740
 741                 send_file_name(f,flist,fname,recurse,FLAG_DELETE);
 742
 743                 if (olddir != NULL) {
 744                         flist_dir = NULL;
 745                         if (pop_dir(olddir) != 0) {
 746                                 rprintf(FERROR,"pop_dir %s : %s\n",
 747                                         dir,strerror(errno));
 748                                 exit_cleanup(RERR_FILESELECT);
 749                         }
 750                 }
 751         }
 752
 753         topsrcname[0] = '\0';
 754
 755         if (f != -1) {
 756                 send_file_entry(NULL,f,0);
 757         }
 758
 759         if (verbose && recurse && !am_server && f != -1)
 760                 rprintf(FINFO,"done\n");
 761
 762         clean_flist(flist, 0);
 763
 764         /* now send the uid/gid list. This was introduced in protocol
 765            version 15 */
 766         if (f != -1 && remote_version >= 15) {
 767                 send_uid_list(f);
 768         }
 769
 770         /* if protocol version is >= 17 then send the io_error flag */
 771         if (f != -1 && remote_version >= 17) {
 772                 extern int module_id;
 773                 write_int(f, lp_ignore_errors(module_id)? 0 : io_error);
 774         }
 775
 776         if (f != -1) {
 777                 io_end_buffering(f);
 778                 stats.flist_size = stats.total_written - start_write;
 779                 stats.num_files = flist->count;
 780         }
 781
 782         if (verbose > 2)
 783                 rprintf(FINFO,"send_file_list done\n");
 784
 785         return flist;
 786 }
 787
 788
 789 struct file_list *recv_file_list(int f)
 790 {
 791   struct file_list *flist;
 792   unsigned char flags;
 793   int64 start_read;
 794   extern int list_only;
 795
 796   if (verbose && recurse && !am_server) {
 797     rprintf(FINFO,"receiving file list ... ");
 798     rflush(FINFO);
 799   }
 800
 801   start_read = stats.total_read;
 802
 803   flist = (struct file_list *)malloc(sizeof(flist[0]));
 804   if (!flist)
 805     goto oom;
 806
 807   flist->count=0;
 808   flist->malloced=1000;
 809   flist->files = (struct file_struct **)malloc(sizeof(flist->files[0])*
 810                                                flist->malloced);
 811   if (!flist->files)
 812     goto oom;
 813
 814
 815   for (flags=read_byte(f); flags; flags=read_byte(f)) {
 816     int i = flist->count;
 817
 818     if (i >= flist->malloced) {
 819           if (flist->malloced < 1000)
 820                   flist->malloced += 1000;
 821           else
 822                   flist->malloced *= 2;
 823           flist->files =(struct file_struct **)realloc(flist->files,
 824                                                        sizeof(flist->files[0])*
 825                                                        flist->malloced);
 826           if (!flist->files)
 827                   goto oom;
 828     }
 829
 830     receive_file_entry(&flist->files[i],flags,f);
 831
 832     if (S_ISREG(flist->files[i]->mode))
 833             stats.total_size += flist->files[i]->length;
 834
 835     flist->count++;
 836
 837     if (verbose > 2)
 838       rprintf(FINFO,"recv_file_name(%s)\n",f_name(flist->files[i]));
 839   }
 840
 841
 842   if (verbose > 2)
 843     rprintf(FINFO,"received %d names\n",flist->count);
 844
 845   clean_flist(flist, relative_paths);
 846
 847   if (verbose && recurse && !am_server) {
 848     rprintf(FINFO,"done\n");
 849   }
 850
 851   /* now recv the uid/gid list. This was introduced in protocol version 15 */
 852   if (f != -1 && remote_version >= 15) {
 853           recv_uid_list(f, flist);
 854   }
 855
 856   /* if protocol version is >= 17 then recv the io_error flag */
 857   if (f != -1 && remote_version >= 17) {
 858           extern int module_id;
 859           if (lp_ignore_errors(module_id)) {
 860                   read_int(f);
 861           } else {
 862                   io_error |= read_int(f);
 863           }
 864   }
 865
 866   if (list_only) {
 867           int i;
 868           for (i=0;i<flist->count;i++) {
 869                   list_file_entry(flist->files[i]);
 870           }
 871   }
 872
 873
 874   if (verbose > 2)
 875     rprintf(FINFO,"recv_file_list done\n");
 876
 877   stats.flist_size = stats.total_read - start_read;
 878   stats.num_files = flist->count;
 879
 880   return flist;
 881
 882 oom:
 883     out_of_memory("recv_file_list");
 884     return NULL; /* not reached */
 885 }
 886
 887
 888 int file_compare(struct file_struct **f1,struct file_struct **f2)
 889 {
 890         if (!(*f1)->basename && !(*f2)->basename) return 0;
 891         if (!(*f1)->basename) return -1;
 892         if (!(*f2)->basename) return 1;
 893         if ((*f1)->dirname == (*f2)->dirname)
 894                 return u_strcmp((*f1)->basename, (*f2)->basename);
 895         return u_strcmp(f_name(*f1),f_name(*f2));
 896 }
 897
 898
 899 int flist_find(struct file_list *flist,struct file_struct *f)
 900 {
 901         int low=0,high=flist->count-1;
 902
 903         if (flist->count <= 0) return -1;
 904
 905         while (low != high) {
 906                 int mid = (low+high)/2;
 907                 int ret = file_compare(&flist->files[flist_up(flist, mid)],&f);
 908                 if (ret == 0) return flist_up(flist, mid);
 909                 if (ret > 0) {
 910                         high=mid;
 911                 } else {
 912                         low=mid+1;
 913                 }
 914         }
 915
 916         if (file_compare(&flist->files[flist_up(flist,low)],&f) == 0)
 917                 return flist_up(flist,low);
 918         return -1;
 919 }
 920
 921
 922 /*
 923  * free up one file
 924  */
 925 void free_file(struct file_struct *file)
 926 {
 927         if (!file) return;
 928         if (file->basename) free(file->basename);
 929         if (file->link) free(file->link);
 930         if (file->sum) free(file->sum);
 931         memset((char *)file, 0, sizeof(*file));
 932 }
 933
 934
 935 /*
 936  * free up all elements in a flist
 937  */
 938 void flist_free(struct file_list *flist)
 939 {
 940         int i;
 941         for (i=1;i<flist->count;i++) {
 942                 free_file(flist->files[i]);
 943                 free(flist->files[i]);
 944         }
 945         memset((char *)flist->files, 0, sizeof(flist->files[0])*flist->count);
 946         free(flist->files);
 947         memset((char *)flist, 0, sizeof(*flist));
 948         free(flist);
 949 }
 950
 951
 952 /*
 953  * This routine ensures we don't have any duplicate names in our file list.
 954  * duplicate names can cause corruption because of the pipelining
 955  */
 956 static void clean_flist(struct file_list *flist, int strip_root)
 957 {
 958         int i;
 959
 960         if (!flist || flist->count == 0)
 961                 return;
 962
 963         qsort(flist->files,flist->count,
 964               sizeof(flist->files[0]),
 965               (int (*)())file_compare);
 966
 967         for (i=1;i<flist->count;i++) {
 968                 if (flist->files[i]->basename &&
 969                     flist->files[i-1]->basename &&
 970                     strcmp(f_name(flist->files[i]),
 971                            f_name(flist->files[i-1])) == 0) {
 972                         if (verbose > 1 && !am_server)
 973                                 rprintf(FINFO,"removing duplicate name %s from file list %d\n",
 974                                         f_name(flist->files[i-1]),i-1);
 975                         free_file(flist->files[i]);
 976                 }
 977         }
 978
 979         if (strip_root) {
 980                 /* we need to strip off the root directory in the case
 981                    of relative paths, but this must be done _after_
 982                    the sorting phase */
 983                 for (i=0;i<flist->count;i++) {
 984                         if (flist->files[i]->dirname &&
 985                             flist->files[i]->dirname[0] == '/') {
 986                                 memmove(&flist->files[i]->dirname[0],
 987                                         &flist->files[i]->dirname[1],
 988                                         strlen(flist->files[i]->dirname));
 989                         }
 990
 991                         if (flist->files[i]->dirname &&
 992                             !flist->files[i]->dirname[0]) {
 993                                 flist->files[i]->dirname = NULL;
 994                         }
 995                 }
 996         }
 997
 998
 999         if (verbose <= 3) return;
1000
1001         for (i=0;i<flist->count;i++) {
1002                 rprintf(FINFO,"[%d] i=%d %s %s mode=0%o len=%.0f\n",
1003                         getpid(), i,
1004                         NS(flist->files[i]->dirname),
1005                         NS(flist->files[i]->basename),
1006                         flist->files[i]->mode,
1007                         (double)flist->files[i]->length);
1008         }
1009 }
1010
1011
1012 /*
1013  * return the full filename of a flist entry
1014  */
1015 char *f_name(struct file_struct *f)
1016 {
1017         static char names[10][MAXPATHLEN];
1018         static int n;
1019         char *p = names[n];
1020
1021         if (!f || !f->basename) return NULL;
1022
1023         n = (n+1)%10;
1024
1025         if (f->dirname) {
1026                 strlcpy(p, f->dirname, MAXPATHLEN);
1027                 strlcat(p, "/", MAXPATHLEN);
1028                 strlcat(p, f->basename, MAXPATHLEN);
1029         } else {
1030                 strlcpy(p, f->basename, MAXPATHLEN);
1031         }
1032
1033         return p;
1034 }
1035