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