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 static struct file_struct *make_file(int f, char *fname)
 413 {
 414         struct file_struct *file;
 415         STRUCT_STAT st;
 416         char sum[SUM_LENGTH];
 417         char *p;
 418         char cleaned_name[MAXPATHLEN];
 419         char linkbuf[MAXPATHLEN];
 420         extern int delete_excluded;
 421
 422         strlcpy(cleaned_name, fname, MAXPATHLEN);
 423         cleaned_name[MAXPATHLEN-1] = 0;
 424         clean_fname(cleaned_name);
 425         if (sanitize_paths) {
 426                 sanitize_path(cleaned_name, NULL);
 427         }
 428         fname = cleaned_name;
 429
 430         memset(sum,0,SUM_LENGTH);
 431
 432         if (readlink_stat(fname,&st,linkbuf) != 0) {
 433                 io_error = 1;
 434                 rprintf(FERROR,"%s: %s\n",
 435                         fname,strerror(errno));
 436                 return NULL;
 437         }
 438
 439         if (S_ISDIR(st.st_mode) && !recurse) {
 440                 rprintf(FINFO,"skipping directory %s\n",fname);
 441                 return NULL;
 442         }
 443
 444         if (one_file_system && st.st_dev != filesystem_dev) {
 445                 if (skip_filesystem(fname, &st))
 446                         return NULL;
 447         }
 448
 449         /* f is set to -1 when calculating deletion file list */
 450         if (((f != -1) || !delete_excluded) && !match_file_name(fname,&st))
 451                 return NULL;
 452
 453         if (verbose > 2)
 454                 rprintf(FINFO,"make_file(%d,%s)\n",f,fname);
 455
 456         file = (struct file_struct *)malloc(sizeof(*file));
 457         if (!file) out_of_memory("make_file");
 458         memset((char *)file,0,sizeof(*file));
 459
 460         if ((p = strrchr(fname,'/'))) {
 461                 static char *lastdir;
 462                 *p = 0;
 463                 if (lastdir && strcmp(fname, lastdir)==0) {
 464                         file->dirname = lastdir;
 465                 } else {
 466                         file->dirname = strdup(fname);
 467                         lastdir = file->dirname;
 468                 }
 469                 file->basename = strdup(p+1);
 470                 *p = '/';
 471         } else {
 472                 file->dirname = NULL;
 473                 file->basename = strdup(fname);
 474         }
 475
 476         file->modtime = st.st_mtime;
 477         file->length = st.st_size;
 478         file->mode = st.st_mode;
 479         file->uid = st.st_uid;
 480         file->gid = st.st_gid;
 481         file->dev = st.st_dev;
 482         file->inode = st.st_ino;
 483 #ifdef HAVE_ST_RDEV
 484         file->rdev = st.st_rdev;
 485 #endif
 486
 487 #if SUPPORT_LINKS
 488         if (S_ISLNK(st.st_mode)) {
 489                 file->link = strdup(linkbuf);
 490         }
 491 #endif
 492
 493         if (always_checksum) {
 494                 file->sum = (char *)malloc(MD4_SUM_LENGTH);
 495                 if (!file->sum) out_of_memory("md4 sum");
 496                 /* drat. we have to provide a null checksum for non-regular
 497                    files in order to be compatible with earlier versions
 498                    of rsync */
 499                 if (S_ISREG(st.st_mode)) {
 500                         file_checksum(fname,file->sum,st.st_size);
 501                 } else {
 502                         memset(file->sum, 0, MD4_SUM_LENGTH);
 503                 }
 504         }
 505
 506         if (flist_dir) {
 507                 static char *lastdir;
 508                 if (lastdir && strcmp(lastdir, flist_dir)==0) {
 509                         file->basedir = lastdir;
 510                 } else {
 511                         file->basedir = strdup(flist_dir);
 512                         lastdir = file->basedir;
 513                 }
 514         } else {
 515                 file->basedir = NULL;
 516         }
 517
 518         if (!S_ISDIR(st.st_mode))
 519                 stats.total_size += st.st_size;
 520
 521         return file;
 522 }
 523
 524
 525
 526 void send_file_name(int f,struct file_list *flist,char *fname,
 527                            int recursive, unsigned base_flags)
 528 {
 529   struct file_struct *file;
 530
 531   file = make_file(f,fname);
 532
 533   if (!file) return;
 534
 535   if (flist->count >= flist->malloced) {
 536           if (flist->malloced < 1000)
 537                   flist->malloced += 1000;
 538           else
 539                   flist->malloced *= 2;
 540           flist->files = (struct file_struct **)realloc(flist->files,
 541                                                         sizeof(flist->files[0])*
 542                                                         flist->malloced);
 543           if (!flist->files)
 544                   out_of_memory("send_file_name");
 545   }
 546
 547   if (strcmp(file->basename,"")) {
 548     flist->files[flist->count++] = file;
 549     send_file_entry(file,f,base_flags);
 550   }
 551
 552   if (S_ISDIR(file->mode) && recursive) {
 553           struct exclude_struct **last_exclude_list = local_exclude_list;
 554           send_directory(f,flist,f_name(file));
 555           local_exclude_list = last_exclude_list;
 556           return;
 557   }
 558 }
 559
 560
 561
 562 static void send_directory(int f,struct file_list *flist,char *dir)
 563 {
 564         DIR *d;
 565         struct dirent *di;
 566         char fname[MAXPATHLEN];
 567         int l;
 568         char *p;
 569
 570         d = opendir(dir);
 571         if (!d) {
 572                 io_error = 1;
 573                 rprintf(FERROR,"opendir(%s): %s\n",
 574                         dir,strerror(errno));
 575                 return;
 576         }
 577
 578         strlcpy(fname,dir,MAXPATHLEN);
 579         l = strlen(fname);
 580         if (fname[l-1] != '/') {
 581                 if (l == MAXPATHLEN-1) {
 582                         io_error = 1;
 583                         rprintf(FERROR,"skipping long-named directory %s\n",fname);
 584                         closedir(d);
 585                         return;
 586                 }
 587                 strlcat(fname,"/", MAXPATHLEN);
 588                 l++;
 589         }
 590         p = fname + strlen(fname);
 591
 592         local_exclude_list = NULL;
 593
 594         if (cvs_exclude) {
 595                 if (strlen(fname) + strlen(".cvsignore") <= MAXPATHLEN-1) {
 596                         strcpy(p,".cvsignore");
 597                         local_exclude_list = make_exclude_list(fname,NULL,0,0);
 598                 } else {
 599                         io_error = 1;
 600                         rprintf(FINFO,"cannot cvs-exclude in long-named directory %s\n",fname);
 601                 }
 602         }
 603
 604         for (di=readdir(d); di; di=readdir(d)) {
 605                 char *dname = d_name(di);
 606                 if (strcmp(dname,".")==0 ||
 607                     strcmp(dname,"..")==0)
 608                         continue;
 609                 strlcpy(p,dname,MAXPATHLEN-l);
 610                 send_file_name(f,flist,fname,recurse,0);
 611         }
 612
 613         if (local_exclude_list) {
 614                 add_exclude_list("!", &local_exclude_list, 0);
 615         }
 616
 617         closedir(d);
 618 }
 619
 620
 621
 622 struct file_list *send_file_list(int f,int argc,char *argv[])
 623 {
 624         int i,l;
 625         STRUCT_STAT st;
 626         char *p,*dir,*olddir;
 627         char lastpath[MAXPATHLEN]="";
 628         struct file_list *flist;
 629         int64 start_write;
 630
 631         if (verbose && recurse && !am_server && f != -1) {
 632                 rprintf(FINFO,"building file list ... ");
 633                 rflush(FINFO);
 634         }
 635
 636         start_write = stats.total_written;
 637
 638         flist = (struct file_list *)malloc(sizeof(flist[0]));
 639         if (!flist) out_of_memory("send_file_list");
 640
 641         flist->count=0;
 642         flist->malloced = 1000;
 643         flist->files = (struct file_struct **)malloc(sizeof(flist->files[0])*
 644                                                      flist->malloced);
 645         if (!flist->files) out_of_memory("send_file_list");
 646
 647         if (f != -1) {
 648                 io_start_buffering(f);
 649         }
 650
 651         for (i=0;i<argc;i++) {
 652                 char *fname = topsrcname;
 653
 654                 strlcpy(fname,argv[i],MAXPATHLEN);
 655
 656                 l = strlen(fname);
 657                 if (l != 1 && fname[l-1] == '/') {
 658                         if ((l == 2) && (fname[0] == '.')) {
 659                                 /*  Turn ./ into just . rather than ./.
 660                                     This was put in to avoid a problem with
 661                                       rsync -aR --delete from ./
 662                                     The send_file_name() below of ./ was
 663                                     mysteriously preventing deletes */
 664                                 fname[1] = 0;
 665                         } else {
 666                                 strlcat(fname,".",MAXPATHLEN);
 667                         }
 668                 }
 669
 670                 if (link_stat(fname,&st) != 0) {
 671                         io_error=1;
 672                         rprintf(FERROR,"%s : %s\n",fname,strerror(errno));
 673                         continue;
 674                 }
 675
 676                 if (S_ISDIR(st.st_mode) && !recurse) {
 677                         rprintf(FINFO,"skipping directory %s\n",fname);
 678                         continue;
 679                 }
 680
 681                 dir = NULL;
 682                 olddir = NULL;
 683
 684                 if (!relative_paths) {
 685                         p = strrchr(fname,'/');
 686                         if (p) {
 687                                 *p = 0;
 688                                 if (p == fname)
 689                                         dir = "/";
 690                                 else
 691                                         dir = fname;
 692                                 fname = p+1;
 693                         }
 694                 } else if (f != -1 && (p=strrchr(fname,'/'))) {
 695                         /* this ensures we send the intermediate directories,
 696                            thus getting their permissions right */
 697                         *p = 0;
 698                         if (strcmp(lastpath,fname)) {
 699                                 strlcpy(lastpath, fname, sizeof(lastpath));
 700                                 *p = '/';
 701                                 for (p=fname+1; (p=strchr(p,'/')); p++) {
 702                                         int copy_links_saved = copy_links;
 703                                         int recurse_saved = recurse;
 704                                         *p = 0;
 705                                         copy_links = copy_unsafe_links;
 706                                         /* set recurse to 1 to prevent make_file
 707                                            from ignoring directory, but still
 708                                            turn off the recursive parameter to
 709                                            send_file_name */
 710                                         recurse = 1;
 711                                         send_file_name(f, flist, fname, 0, 0);
 712                                         copy_links = copy_links_saved;
 713                                         recurse = recurse_saved;
 714                                         *p = '/';
 715                                 }
 716                         } else {
 717                                 *p = '/';
 718                         }
 719                 }
 720
 721                 if (!*fname)
 722                         fname = ".";
 723
 724                 if (dir && *dir) {
 725                         olddir = push_dir(dir, 1);
 726
 727                         if (!olddir) {
 728                                 io_error=1;
 729                                 rprintf(FERROR,"push_dir %s : %s\n",
 730                                         dir,strerror(errno));
 731                                 continue;
 732                         }
 733
 734                         flist_dir = dir;
 735                 }
 736
 737                 if (one_file_system)
 738                         set_filesystem(fname);
 739
 740                 send_file_name(f,flist,fname,recurse,FLAG_DELETE);
 741
 742                 if (olddir != NULL) {
 743                         flist_dir = NULL;
 744                         if (pop_dir(olddir) != 0) {
 745                                 rprintf(FERROR,"pop_dir %s : %s\n",
 746                                         dir,strerror(errno));
 747                                 exit_cleanup(RERR_FILESELECT);
 748                         }
 749                 }
 750         }
 751
 752         topsrcname[0] = '\0';
 753
 754         if (f != -1) {
 755                 send_file_entry(NULL,f,0);
 756         }
 757
 758         if (verbose && recurse && !am_server && f != -1)
 759                 rprintf(FINFO,"done\n");
 760
 761         clean_flist(flist, 0);
 762
 763         /* now send the uid/gid list. This was introduced in protocol
 764            version 15 */
 765         if (f != -1 && remote_version >= 15) {
 766                 send_uid_list(f);
 767         }
 768
 769         /* if protocol version is >= 17 then send the io_error flag */
 770         if (f != -1 && remote_version >= 17) {
 771                 extern int module_id;
 772                 write_int(f, lp_ignore_errors(module_id)? 0 : io_error);
 773         }
 774
 775         if (f != -1) {
 776                 io_end_buffering(f);
 777                 stats.flist_size = stats.total_written - start_write;
 778                 stats.num_files = flist->count;
 779         }
 780
 781         if (verbose > 2)
 782                 rprintf(FINFO,"send_file_list done\n");
 783
 784         return flist;
 785 }
 786
 787
 788 struct file_list *recv_file_list(int f)
 789 {
 790   struct file_list *flist;
 791   unsigned char flags;
 792   int64 start_read;
 793   extern int list_only;
 794
 795   if (verbose && recurse && !am_server) {
 796     rprintf(FINFO,"receiving file list ... ");
 797     rflush(FINFO);
 798   }
 799
 800   start_read = stats.total_read;
 801
 802   flist = (struct file_list *)malloc(sizeof(flist[0]));
 803   if (!flist)
 804     goto oom;
 805
 806   flist->count=0;
 807   flist->malloced=1000;
 808   flist->files = (struct file_struct **)malloc(sizeof(flist->files[0])*
 809                                                flist->malloced);
 810   if (!flist->files)
 811     goto oom;
 812
 813
 814   for (flags=read_byte(f); flags; flags=read_byte(f)) {
 815     int i = flist->count;
 816
 817     if (i >= flist->malloced) {
 818           if (flist->malloced < 1000)
 819                   flist->malloced += 1000;
 820           else
 821                   flist->malloced *= 2;
 822           flist->files =(struct file_struct **)realloc(flist->files,
 823                                                        sizeof(flist->files[0])*
 824                                                        flist->malloced);
 825           if (!flist->files)
 826                   goto oom;
 827     }
 828
 829     receive_file_entry(&flist->files[i],flags,f);
 830
 831     if (S_ISREG(flist->files[i]->mode))
 832             stats.total_size += flist->files[i]->length;
 833
 834     flist->count++;
 835
 836     if (verbose > 2)
 837       rprintf(FINFO,"recv_file_name(%s)\n",f_name(flist->files[i]));
 838   }
 839
 840
 841   if (verbose > 2)
 842     rprintf(FINFO,"received %d names\n",flist->count);
 843
 844   clean_flist(flist, relative_paths);
 845
 846   if (verbose && recurse && !am_server) {
 847     rprintf(FINFO,"done\n");
 848   }
 849
 850   /* now recv the uid/gid list. This was introduced in protocol version 15 */
 851   if (f != -1 && remote_version >= 15) {
 852           recv_uid_list(f, flist);
 853   }
 854
 855   /* if protocol version is >= 17 then recv the io_error flag */
 856   if (f != -1 && remote_version >= 17) {
 857           extern int module_id;
 858           if (lp_ignore_errors(module_id)) {
 859                   read_int(f);
 860           } else {
 861                   io_error |= read_int(f);
 862           }
 863   }
 864
 865   if (list_only) {
 866           int i;
 867           for (i=0;i<flist->count;i++) {
 868                   list_file_entry(flist->files[i]);
 869           }
 870   }
 871
 872
 873   if (verbose > 2)
 874     rprintf(FINFO,"recv_file_list done\n");
 875
 876   stats.flist_size = stats.total_read - start_read;
 877   stats.num_files = flist->count;
 878
 879   return flist;
 880
 881 oom:
 882     out_of_memory("recv_file_list");
 883     return NULL; /* not reached */
 884 }
 885
 886
 887 int file_compare(struct file_struct **f1,struct file_struct **f2)
 888 {
 889         if (!(*f1)->basename && !(*f2)->basename) return 0;
 890         if (!(*f1)->basename) return -1;
 891         if (!(*f2)->basename) return 1;
 892         if ((*f1)->dirname == (*f2)->dirname)
 893                 return u_strcmp((*f1)->basename, (*f2)->basename);
 894         return u_strcmp(f_name(*f1),f_name(*f2));
 895 }
 896
 897
 898 int flist_find(struct file_list *flist,struct file_struct *f)
 899 {
 900         int low=0,high=flist->count-1;
 901
 902         if (flist->count <= 0) return -1;
 903
 904         while (low != high) {
 905                 int mid = (low+high)/2;
 906                 int ret = file_compare(&flist->files[flist_up(flist, mid)],&f);
 907                 if (ret == 0) return flist_up(flist, mid);
 908                 if (ret > 0) {
 909                         high=mid;
 910                 } else {
 911                         low=mid+1;
 912                 }
 913         }
 914
 915         if (file_compare(&flist->files[flist_up(flist,low)],&f) == 0)
 916                 return flist_up(flist,low);
 917         return -1;
 918 }
 919
 920
 921 /*
 922  * free up one file
 923  */
 924 static void free_file(struct file_struct *file)
 925 {
 926         if (!file) return;
 927         if (file->basename) free(file->basename);
 928         if (file->link) free(file->link);
 929         if (file->sum) free(file->sum);
 930         memset((char *)file, 0, sizeof(*file));
 931 }
 932
 933
 934 /*
 935  * free up all elements in a flist
 936  */
 937 void flist_free(struct file_list *flist)
 938 {
 939         int i;
 940         for (i=1;i<flist->count;i++) {
 941                 free_file(flist->files[i]);
 942                 free(flist->files[i]);
 943         }
 944         memset((char *)flist->files, 0, sizeof(flist->files[0])*flist->count);
 945         free(flist->files);
 946         memset((char *)flist, 0, sizeof(*flist));
 947         free(flist);
 948 }
 949
 950
 951 /*
 952  * This routine ensures we don't have any duplicate names in our file list.
 953  * duplicate names can cause corruption because of the pipelining
 954  */
 955 static void clean_flist(struct file_list *flist, int strip_root)
 956 {
 957         int i;
 958
 959         if (!flist || flist->count == 0)
 960                 return;
 961
 962         qsort(flist->files,flist->count,
 963               sizeof(flist->files[0]),
 964               (int (*)())file_compare);
 965
 966         for (i=1;i<flist->count;i++) {
 967                 if (flist->files[i]->basename &&
 968                     flist->files[i-1]->basename &&
 969                     strcmp(f_name(flist->files[i]),
 970                            f_name(flist->files[i-1])) == 0) {
 971                         if (verbose > 1 && !am_server)
 972                                 rprintf(FINFO,"removing duplicate name %s from file list %d\n",
 973                                         f_name(flist->files[i-1]),i-1);
 974                         free_file(flist->files[i]);
 975                 }
 976         }
 977
 978         if (strip_root) {
 979                 /* we need to strip off the root directory in the case
 980                    of relative paths, but this must be done _after_
 981                    the sorting phase */
 982                 for (i=0;i<flist->count;i++) {
 983                         if (flist->files[i]->dirname &&
 984                             flist->files[i]->dirname[0] == '/') {
 985                                 memmove(&flist->files[i]->dirname[0],
 986                                         &flist->files[i]->dirname[1],
 987                                         strlen(flist->files[i]->dirname));
 988                         }
 989
 990                         if (flist->files[i]->dirname &&
 991                             !flist->files[i]->dirname[0]) {
 992                                 flist->files[i]->dirname = NULL;
 993                         }
 994                 }
 995         }
 996
 997
 998         if (verbose <= 3) return;
 999
1000         for (i=0;i<flist->count;i++) {
1001                 rprintf(FINFO,"[%d] i=%d %s %s mode=0%o len=%.0f\n",
1002                         getpid(), i,
1003                         NS(flist->files[i]->dirname),
1004                         NS(flist->files[i]->basename),
1005                         flist->files[i]->mode,
1006                         (double)flist->files[i]->length);
1007         }
1008 }
1009
1010
1011 /*
1012  * return the full filename of a flist entry
1013  */
1014 char *f_name(struct file_struct *f)
1015 {
1016         static char names[10][MAXPATHLEN];
1017         static int n;
1018         char *p = names[n];
1019
1020         if (!f || !f->basename) return NULL;
1021
1022         n = (n+1)%10;
1023
1024         if (f->dirname) {
1025                 strlcpy(p, f->dirname, MAXPATHLEN);
1026                 strlcat(p, "/", MAXPATHLEN);
1027                 strlcat(p, f->basename, MAXPATHLEN);
1028         } else {
1029                 strlcpy(p, f->basename, MAXPATHLEN);
1030         }
1031
1032         return p;
1033 }
1034