flist.c

   1 /*
   2    Copyright (C) Andrew Tridgell 1996
   3    Copyright (C) Paul Mackerras 1996
   4    Copyright (C) 2001 by Martin Pool <mbp@samba.org>
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 /* generate and receive file lists */
  22
  23 #include "rsync.h"
  24
  25 extern struct stats stats;
  26
  27 extern int verbose;
  28 extern int am_server;
  29 extern int always_checksum;
  30
  31 extern int cvs_exclude;
  32
  33 extern int recurse;
  34
  35 extern int one_file_system;
  36 extern int make_backups;
  37 extern int preserve_links;
  38 extern int preserve_hard_links;
  39 extern int preserve_perms;
  40 extern int preserve_devices;
  41 extern int preserve_uid;
  42 extern int preserve_gid;
  43 extern int preserve_times;
  44 extern int relative_paths;
  45 extern int copy_links;
  46 extern int copy_unsafe_links;
  47 extern int remote_version;
  48 extern int io_error;
  49 extern int sanitize_paths;
  50
  51 extern int read_batch;
  52 extern int write_batch;
  53
  54 static char topsrcname[MAXPATHLEN];
  55
  56 static struct exclude_struct **local_exclude_list;
  57
  58 static struct file_struct null_file;
  59
  60 static void clean_flist(struct file_list *flist, int strip_root);
  61
  62 static struct string_area *string_area_new(int size)
  63 {
  64         struct string_area *a;
  65
  66         if (size <= 0) size = ARENA_SIZE;
  67         a = malloc(sizeof(*a));
  68         if (!a) out_of_memory("string_area_new");
  69         a->current = a->base = malloc(size);
  70         if (!a->current) out_of_memory("string_area_new buffer");
  71         a->end = a->base + size;
  72         a->next = NULL;
  73
  74         return a;
  75 }
  76
  77 static void string_area_free(struct string_area *a)
  78 {
  79         struct string_area *next;
  80
  81         for ( ; a ; a = next) {
  82                 next = a->next;
  83                 free(a->base);
  84         }
  85 }
  86
  87 static char *string_area_malloc(struct string_area **ap, int size)
  88 {
  89         char *p;
  90         struct string_area *a;
  91
  92         /* does the request fit into the current space? */
  93         a = *ap;
  94         if (a->current + size >= a->end) {
  95                 /* no; get space, move new string_area to front of the list */
  96                 a = string_area_new(size > ARENA_SIZE ? size : ARENA_SIZE);
  97                 a->next = *ap;
  98                 *ap = a;
  99         }
 100
 101         /* have space; do the "allocation." */
 102         p = a->current;
 103         a->current += size;
 104         return p;
 105 }
 106
 107 static char *string_area_strdup(struct string_area **ap, const char *src)
 108 {
 109         char* dest = string_area_malloc(ap, strlen(src) + 1);
 110         return strcpy(dest, src);
 111 }
 112
 113 static void list_file_entry(struct file_struct *f)
 114 {
 115         char perms[11];
 116
 117         if (!f->basename)
 118                 /* this can happen if duplicate names were removed */
 119                 return;
 120
 121         permstring(perms, f->mode);
 122
 123         if (preserve_links && S_ISLNK(f->mode)) {
 124                 rprintf(FINFO,"%s %11.0f %s %s -> %s\n",
 125                         perms,
 126                         (double)f->length, timestring(f->modtime),
 127                         f_name(f), f->link);
 128         } else {
 129                 rprintf(FINFO,"%s %11.0f %s %s\n",
 130                         perms,
 131                         (double)f->length, timestring(f->modtime), f_name(f));
 132         }
 133 }
 134
 135
 136 int readlink_stat(const char *Path, STRUCT_STAT *Buffer, char *Linkbuf)
 137 {
 138 #if SUPPORT_LINKS
 139         if (copy_links) {
 140                 return do_stat(Path, Buffer);
 141         }
 142         if (do_lstat(Path, Buffer) == -1) {
 143                 return -1;
 144         }
 145         if (S_ISLNK(Buffer->st_mode)) {
 146                 int l;
 147                 if ((l = readlink((char *) Path, Linkbuf, MAXPATHLEN-1))== -1) {
 148                         return -1;
 149                 }
 150                 Linkbuf[l] = 0;
 151                 if (copy_unsafe_links && (topsrcname[0] != '\0') &&
 152                                     unsafe_symlink(Linkbuf, topsrcname)) {
 153                         return do_stat(Path, Buffer);
 154                 }
 155         }
 156         return 0;
 157 #else
 158         return do_stat(Path, Buffer);
 159 #endif
 160 }
 161
 162 int link_stat(const char *Path, STRUCT_STAT *Buffer)
 163 {
 164 #if SUPPORT_LINKS
 165     if (copy_links) {
 166         return do_stat(Path, Buffer);
 167     } else {
 168         return do_lstat(Path, Buffer);
 169     }
 170 #else
 171     return do_stat(Path, Buffer);
 172 #endif
 173 }
 174
 175 /*
 176   This function is used to check if a file should be included/excluded
 177   from the list of files based on its name and type etc
 178  */
 179 static int check_exclude_file(int f,char *fname,STRUCT_STAT *st)
 180 {
 181         extern int delete_excluded;
 182
 183         /* f is set to -1 when calculating deletion file list */
 184         if ((f == -1) && delete_excluded) {
 185                 return 0;
 186         }
 187         if (check_exclude(fname,local_exclude_list,st)) {
 188                 return 1;
 189         }
 190         return 0;
 191 }
 192
 193 /* used by the one_file_system code */
 194 static dev_t filesystem_dev;
 195
 196 static void set_filesystem(char *fname)
 197 {
 198   STRUCT_STAT st;
 199   if (link_stat(fname,&st) != 0) return;
 200   filesystem_dev = st.st_dev;
 201 }
 202
 203
 204 static int to_wire_mode(mode_t mode)
 205 {
 206         if (S_ISLNK(mode) && (_S_IFLNK != 0120000)) {
 207                 return (mode & ~(_S_IFMT)) | 0120000;
 208         }
 209         return (int)mode;
 210 }
 211
 212 static mode_t from_wire_mode(int mode)
 213 {
 214         if ((mode & (_S_IFMT)) == 0120000 && (_S_IFLNK != 0120000)) {
 215                 return (mode & ~(_S_IFMT)) | _S_IFLNK;
 216         }
 217         return (mode_t)mode;
 218 }
 219
 220
 221 static void send_directory(int f,struct file_list *flist,char *dir);
 222
 223 static char *flist_dir;
 224
 225
 226 static void send_file_entry(struct file_struct *file,int f,unsigned base_flags)
 227 {
 228         unsigned char flags;
 229         static time_t last_time;
 230         static mode_t last_mode;
 231         static dev_t last_rdev;
 232         static uid_t last_uid;
 233         static gid_t last_gid;
 234         static char lastname[MAXPATHLEN];
 235         char *fname;
 236         int l1,l2;
 237
 238         if (f == -1) return;
 239
 240         if (!file) {
 241                 write_byte(f,0);
 242                 return;
 243         }
 244
 245         fname = f_name(file);
 246
 247         flags = base_flags;
 248
 249         if (file->mode == last_mode) flags |= SAME_MODE;
 250         if (file->rdev == last_rdev) flags |= SAME_RDEV;
 251         if (file->uid == last_uid) flags |= SAME_UID;
 252         if (file->gid == last_gid) flags |= SAME_GID;
 253         if (file->modtime == last_time) flags |= SAME_TIME;
 254
 255         for (l1=0;lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);l1++) ;
 256         l2 = strlen(fname) - l1;
 257
 258         if (l1 > 0) flags |= SAME_NAME;
 259         if (l2 > 255) flags |= LONG_NAME;
 260
 261         /* we must make sure we don't send a zero flags byte or the other
 262            end will terminate the flist transfer */
 263         if (flags == 0 && !S_ISDIR(file->mode)) flags |= FLAG_DELETE;
 264         if (flags == 0) flags |= LONG_NAME;
 265
 266         write_byte(f,flags);
 267         if (flags & SAME_NAME)
 268                 write_byte(f,l1);
 269         if (flags & LONG_NAME)
 270                 write_int(f,l2);
 271         else
 272                 write_byte(f,l2);
 273         write_buf(f,fname+l1,l2);
 274
 275         write_longint(f,file->length);
 276         if (!(flags & SAME_TIME))
 277                 write_int(f,(int)file->modtime);
 278         if (!(flags & SAME_MODE))
 279                 write_int(f,to_wire_mode(file->mode));
 280         if (preserve_uid && !(flags & SAME_UID)) {
 281                 add_uid(file->uid);
 282                 write_int(f,(int)file->uid);
 283         }
 284         if (preserve_gid && !(flags & SAME_GID)) {
 285                 add_gid(file->gid);
 286                 write_int(f,(int)file->gid);
 287         }
 288         if (preserve_devices && IS_DEVICE(file->mode) && !(flags & SAME_RDEV))
 289                 write_int(f,(int)file->rdev);
 290
 291 #if SUPPORT_LINKS
 292         if (preserve_links && S_ISLNK(file->mode)) {
 293                 write_int(f,strlen(file->link));
 294                 write_buf(f,file->link,strlen(file->link));
 295         }
 296 #endif
 297
 298 #if SUPPORT_HARD_LINKS
 299         if (preserve_hard_links && S_ISREG(file->mode)) {
 300                 write_int(f,(int)file->dev);
 301                 write_int(f,(int)file->inode);
 302         }
 303 #endif
 304
 305         if (always_checksum) {
 306                 if (remote_version < 21) {
 307                         write_buf(f,file->sum,2);
 308                 } else {
 309                         write_buf(f,file->sum,MD4_SUM_LENGTH);
 310                 }
 311         }
 312
 313         last_mode = file->mode;
 314         last_rdev = file->rdev;
 315         last_uid = file->uid;
 316         last_gid = file->gid;
 317         last_time = file->modtime;
 318
 319         strlcpy(lastname,fname,MAXPATHLEN);
 320         lastname[MAXPATHLEN-1] = 0;
 321 }
 322
 323
 324
 325 static void receive_file_entry(struct file_struct **fptr,
 326                                unsigned flags,int f)
 327 {
 328         static time_t last_time;
 329         static mode_t last_mode;
 330         static dev_t last_rdev;
 331         static uid_t last_uid;
 332         static gid_t last_gid;
 333         static char lastname[MAXPATHLEN];
 334         char thisname[MAXPATHLEN];
 335         int l1=0,l2=0;
 336         char *p;
 337         struct file_struct *file;
 338
 339         if (flags & SAME_NAME)
 340                 l1 = read_byte(f);
 341
 342         if (flags & LONG_NAME)
 343                 l2 = read_int(f);
 344         else
 345                 l2 = read_byte(f);
 346
 347         file = (struct file_struct *)malloc(sizeof(*file));
 348         if (!file) out_of_memory("receive_file_entry");
 349         memset((char *)file, 0, sizeof(*file));
 350         (*fptr) = file;
 351
 352         if (l2 >= MAXPATHLEN-l1) {
 353                 rprintf(FERROR,"overflow: flags=0x%x l1=%d l2=%d lastname=%s\n",
 354                         flags, l1, l2, lastname);
 355                 overflow("receive_file_entry");
 356         }
 357
 358         strlcpy(thisname,lastname,l1+1);
 359         read_sbuf(f,&thisname[l1],l2);
 360         thisname[l1+l2] = 0;
 361
 362         strlcpy(lastname,thisname,MAXPATHLEN);
 363         lastname[MAXPATHLEN-1] = 0;
 364
 365         clean_fname(thisname);
 366
 367         if (sanitize_paths) {
 368                 sanitize_path(thisname, NULL);
 369         }
 370
 371         if ((p = strrchr(thisname,'/'))) {
 372                 static char *lastdir;
 373                 *p = 0;
 374                 if (lastdir && strcmp(thisname, lastdir)==0) {
 375                         file->dirname = lastdir;
 376                 } else {
 377                         file->dirname = strdup(thisname);
 378                         lastdir = file->dirname;
 379                 }
 380                 file->basename = strdup(p+1);
 381         } else {
 382                 file->dirname = NULL;
 383                 file->basename = strdup(thisname);
 384         }
 385
 386         if (!file->basename) out_of_memory("receive_file_entry 1");
 387
 388
 389         file->flags = flags;
 390         file->length = read_longint(f);
 391         file->modtime = (flags & SAME_TIME) ? last_time : (time_t)read_int(f);
 392         file->mode = (flags & SAME_MODE) ? last_mode : from_wire_mode(read_int(f));
 393         if (preserve_uid)
 394                 file->uid = (flags & SAME_UID) ? last_uid : (uid_t)read_int(f);
 395         if (preserve_gid)
 396                 file->gid = (flags & SAME_GID) ? last_gid : (gid_t)read_int(f);
 397         if (preserve_devices && IS_DEVICE(file->mode))
 398                 file->rdev = (flags & SAME_RDEV) ? last_rdev : (dev_t)read_int(f);
 399
 400         if (preserve_links && S_ISLNK(file->mode)) {
 401                 int l = read_int(f);
 402                 file->link = (char *)malloc(l+1);
 403                 if (!file->link) out_of_memory("receive_file_entry 2");
 404                 read_sbuf(f,file->link,l);
 405                 if (sanitize_paths) {
 406                         sanitize_path(file->link, file->dirname);
 407                 }
 408         }
 409
 410 #if SUPPORT_HARD_LINKS
 411         if (preserve_hard_links && S_ISREG(file->mode)) {
 412                 file->dev = read_int(f);
 413                 file->inode = read_int(f);
 414         }
 415 #endif
 416
 417         if (always_checksum) {
 418                 file->sum = (char *)malloc(MD4_SUM_LENGTH);
 419                 if (!file->sum) out_of_memory("md4 sum");
 420                 if (remote_version < 21) {
 421                         read_buf(f,file->sum,2);
 422                 } else {
 423                         read_buf(f,file->sum,MD4_SUM_LENGTH);
 424                 }
 425         }
 426
 427         last_mode = file->mode;
 428         last_rdev = file->rdev;
 429         last_uid = file->uid;
 430         last_gid = file->gid;
 431         last_time = file->modtime;
 432
 433         if (!preserve_perms) {
 434                 extern int orig_umask;
 435                 /* set an appropriate set of permissions based on original
 436                    permissions and umask. This emulates what GNU cp does */
 437                 file->mode &= ~orig_umask;
 438         }
 439 }
 440
 441
 442 /* determine if a file in a different filesstem should be skipped
 443    when one_file_system is set. We bascally only want to include
 444    the mount points - but they can be hard to find! */
 445 static int skip_filesystem(char *fname, STRUCT_STAT *st)
 446 {
 447         STRUCT_STAT st2;
 448         char *p = strrchr(fname, '/');
 449
 450         /* skip all but directories */
 451         if (!S_ISDIR(st->st_mode)) return 1;
 452
 453         /* if its not a subdirectory then allow */
 454         if (!p) return 0;
 455
 456         *p = 0;
 457         if (link_stat(fname, &st2)) {
 458                 *p = '/';
 459                 return 0;
 460         }
 461         *p = '/';
 462
 463         return (st2.st_dev != filesystem_dev);
 464 }
 465
 466 #define STRDUP(ap, p)   (ap ? string_area_strdup(ap, p) : strdup(p))
 467 #define MALLOC(ap, i)   (ap ? string_area_malloc(ap, i) : malloc(i))
 468
 469 /* create a file_struct for a named file */
 470 struct file_struct *make_file(int f, char *fname, struct string_area **ap,
 471                               int noexcludes)
 472 {
 473         struct file_struct *file;
 474         STRUCT_STAT st;
 475         char sum[SUM_LENGTH];
 476         char *p;
 477         char cleaned_name[MAXPATHLEN];
 478         char linkbuf[MAXPATHLEN];
 479         extern int module_id;
 480
 481         strlcpy(cleaned_name, fname, MAXPATHLEN);
 482         cleaned_name[MAXPATHLEN-1] = 0;
 483         clean_fname(cleaned_name);
 484         if (sanitize_paths) {
 485                 sanitize_path(cleaned_name, NULL);
 486         }
 487         fname = cleaned_name;
 488
 489         memset(sum,0,SUM_LENGTH);
 490
 491         if (readlink_stat(fname,&st,linkbuf) != 0) {
 492                 int save_errno = errno;
 493                 if ((errno == ENOENT) && copy_links && !noexcludes) {
 494                         /* symlink pointing nowhere, see if excluded */
 495                         memset((char *)&st, 0, sizeof(st));
 496                         if (check_exclude_file(f,fname,&st)) {
 497                                 /* file is excluded anyway, ignore silently */
 498                                 return NULL;
 499                         }
 500                 }
 501                 io_error = 1;
 502                 rprintf(FERROR,"readlink %s: %s\n",
 503                         fname,strerror(save_errno));
 504                 return NULL;
 505         }
 506
 507         /* we use noexcludes from backup.c */
 508         if (noexcludes) goto skip_excludes;
 509
 510         if (S_ISDIR(st.st_mode) && !recurse) {
 511                 rprintf(FINFO,"skipping directory %s\n",fname);
 512                 return NULL;
 513         }
 514
 515         if (one_file_system && st.st_dev != filesystem_dev) {
 516                 if (skip_filesystem(fname, &st))
 517                         return NULL;
 518         }
 519
 520         if (check_exclude_file(f,fname,&st))
 521                 return NULL;
 522
 523
 524         if (lp_ignore_nonreadable(module_id) && access(fname, R_OK) != 0)
 525                 return NULL;
 526
 527  skip_excludes:
 528
 529         if (verbose > 2)
 530                 rprintf(FINFO,"make_file(%d,%s)\n",f,fname);
 531
 532         file = (struct file_struct *)malloc(sizeof(*file));
 533         if (!file) out_of_memory("make_file");
 534         memset((char *)file,0,sizeof(*file));
 535
 536         if ((p = strrchr(fname,'/'))) {
 537                 static char *lastdir;
 538                 *p = 0;
 539                 if (lastdir && strcmp(fname, lastdir)==0) {
 540                         file->dirname = lastdir;
 541                 } else {
 542                         file->dirname = strdup(fname);
 543                         lastdir = file->dirname;
 544                 }
 545                 file->basename = STRDUP(ap, p+1);
 546                 *p = '/';
 547         } else {
 548                 file->dirname = NULL;
 549                 file->basename = STRDUP(ap, fname);
 550         }
 551
 552         file->modtime = st.st_mtime;
 553         file->length = st.st_size;
 554         file->mode = st.st_mode;
 555         file->uid = st.st_uid;
 556         file->gid = st.st_gid;
 557         file->dev = st.st_dev;
 558         file->inode = st.st_ino;
 559 #ifdef HAVE_ST_RDEV
 560         file->rdev = st.st_rdev;
 561 #endif
 562
 563 #if SUPPORT_LINKS
 564         if (S_ISLNK(st.st_mode)) {
 565                 file->link = STRDUP(ap, linkbuf);
 566         }
 567 #endif
 568
 569         if (always_checksum) {
 570                 file->sum = (char *)MALLOC(ap, MD4_SUM_LENGTH);
 571                 if (!file->sum) out_of_memory("md4 sum");
 572                 /* drat. we have to provide a null checksum for non-regular
 573                    files in order to be compatible with earlier versions
 574                    of rsync */
 575                 if (S_ISREG(st.st_mode)) {
 576                         file_checksum(fname,file->sum,st.st_size);
 577                 } else {
 578                         memset(file->sum, 0, MD4_SUM_LENGTH);
 579                 }
 580         }
 581
 582         if (flist_dir) {
 583                 static char *lastdir;
 584                 if (lastdir && strcmp(lastdir, flist_dir)==0) {
 585                         file->basedir = lastdir;
 586                 } else {
 587                         file->basedir = strdup(flist_dir);
 588                         lastdir = file->basedir;
 589                 }
 590         } else {
 591                 file->basedir = NULL;
 592         }
 593
 594         if (!S_ISDIR(st.st_mode))
 595                 stats.total_size += st.st_size;
 596
 597         return file;
 598 }
 599
 600
 601
 602 void send_file_name(int f,struct file_list *flist,char *fname,
 603                            int recursive, unsigned base_flags)
 604 {
 605   struct file_struct *file;
 606
 607   file = make_file(f,fname, &flist->string_area, 0);
 608
 609   if (!file) return;
 610
 611   if (flist->count >= flist->malloced) {
 612           if (flist->malloced < 1000)
 613                   flist->malloced += 1000;
 614           else
 615                   flist->malloced *= 2;
 616           flist->files = (struct file_struct **)realloc(flist->files,
 617                                                         sizeof(flist->files[0])*
 618                                                         flist->malloced);
 619           if (!flist->files)
 620                   out_of_memory("send_file_name");
 621   }
 622
 623   if (write_batch) /*  dw  */
 624     file->flags = FLAG_DELETE;
 625
 626   if (strcmp(file->basename,"")) {
 627     flist->files[flist->count++] = file;
 628     send_file_entry(file,f,base_flags);
 629   }
 630
 631   if (S_ISDIR(file->mode) && recursive) {
 632           struct exclude_struct **last_exclude_list = local_exclude_list;
 633           send_directory(f,flist,f_name(file));
 634           local_exclude_list = last_exclude_list;
 635           return;
 636   }
 637 }
 638
 639
 640
 641 static void send_directory(int f,struct file_list *flist,char *dir)
 642 {
 643         DIR *d;
 644         struct dirent *di;
 645         char fname[MAXPATHLEN];
 646         int l;
 647         char *p;
 648
 649         d = opendir(dir);
 650         if (!d) {
 651                 io_error = 1;
 652                 rprintf(FERROR,"opendir(%s): %s\n",
 653                         dir,strerror(errno));
 654                 return;
 655         }
 656
 657         strlcpy(fname,dir,MAXPATHLEN);
 658         l = strlen(fname);
 659         if (fname[l-1] != '/') {
 660                 if (l == MAXPATHLEN-1) {
 661                         io_error = 1;
 662                         rprintf(FERROR,"skipping long-named directory %s\n",fname);
 663                         closedir(d);
 664                         return;
 665                 }
 666                 strlcat(fname,"/", MAXPATHLEN);
 667                 l++;
 668         }
 669         p = fname + strlen(fname);
 670
 671         local_exclude_list = NULL;
 672
 673         if (cvs_exclude) {
 674                 if (strlen(fname) + strlen(".cvsignore") <= MAXPATHLEN-1) {
 675                         strcpy(p,".cvsignore");
 676                         local_exclude_list = make_exclude_list(fname,NULL,0,0);
 677                 } else {
 678                         io_error = 1;
 679                         rprintf(FINFO,"cannot cvs-exclude in long-named directory %s\n",fname);
 680                 }
 681         }
 682
 683         for (di=readdir(d); di; di=readdir(d)) {
 684                 char *dname = d_name(di);
 685                 if (strcmp(dname,".")==0 ||
 686                     strcmp(dname,"..")==0)
 687                         continue;
 688                 strlcpy(p,dname,MAXPATHLEN-l);
 689                 send_file_name(f,flist,fname,recurse,0);
 690         }
 691
 692         if (local_exclude_list) {
 693                 add_exclude_list("!", &local_exclude_list, 0);
 694         }
 695
 696         closedir(d);
 697 }
 698
 699
 700 struct file_list *send_file_list(int f,int argc,char *argv[])
 701 {
 702         int i,l;
 703         STRUCT_STAT st;
 704         char *p,*dir,*olddir;
 705         char lastpath[MAXPATHLEN]="";
 706         struct file_list *flist;
 707         int64 start_write;
 708
 709         if (verbose && recurse && !am_server && f != -1) {
 710                 rprintf(FINFO,"building file list ... ");
 711                 if (verbose > 1)
 712                         rprintf(FINFO, "\n");
 713                 rflush(FINFO);
 714         }
 715
 716         start_write = stats.total_written;
 717
 718         flist = flist_new();
 719
 720         if (f != -1) {
 721                 io_start_buffering(f);
 722         }
 723
 724         for (i=0;i<argc;i++) {
 725                 char *fname = topsrcname;
 726
 727                 strlcpy(fname,argv[i],MAXPATHLEN);
 728
 729                 l = strlen(fname);
 730                 if (l != 1 && fname[l-1] == '/') {
 731                         if ((l == 2) && (fname[0] == '.')) {
 732                                 /*  Turn ./ into just . rather than ./.
 733                                     This was put in to avoid a problem with
 734                                       rsync -aR --delete from ./
 735                                     The send_file_name() below of ./ was
 736                                     mysteriously preventing deletes */
 737                                 fname[1] = 0;
 738                         } else {
 739                                 strlcat(fname,".",MAXPATHLEN);
 740                         }
 741                 }
 742
 743                 if (link_stat(fname,&st) != 0) {
 744                         if (f != -1) {
 745                                 io_error=1;
 746                                 rprintf(FERROR,"link_stat %s : %s\n",fname,strerror(errno));
 747                         }
 748                         continue;
 749                 }
 750
 751                 if (S_ISDIR(st.st_mode) && !recurse) {
 752                         rprintf(FINFO,"skipping directory %s\n",fname);
 753                         continue;
 754                 }
 755
 756                 dir = NULL;
 757                 olddir = NULL;
 758
 759                 if (!relative_paths) {
 760                         p = strrchr(fname,'/');
 761                         if (p) {
 762                                 *p = 0;
 763                                 if (p == fname)
 764                                         dir = "/";
 765                                 else
 766                                         dir = fname;
 767                                 fname = p+1;
 768                         }
 769                 } else if (f != -1 && (p=strrchr(fname,'/'))) {
 770                         /* this ensures we send the intermediate directories,
 771                            thus getting their permissions right */
 772                         *p = 0;
 773                         if (strcmp(lastpath,fname)) {
 774                                 strlcpy(lastpath, fname, sizeof(lastpath));
 775                                 *p = '/';
 776                                 for (p=fname+1; (p=strchr(p,'/')); p++) {
 777                                         int copy_links_saved = copy_links;
 778                                         int recurse_saved = recurse;
 779                                         *p = 0;
 780                                         copy_links = copy_unsafe_links;
 781                                         /* set recurse to 1 to prevent make_file
 782                                            from ignoring directory, but still
 783                                            turn off the recursive parameter to
 784                                            send_file_name */
 785                                         recurse = 1;
 786                                         send_file_name(f, flist, fname, 0, 0);
 787                                         copy_links = copy_links_saved;
 788                                         recurse = recurse_saved;
 789                                         *p = '/';
 790                                 }
 791                         } else {
 792                                 *p = '/';
 793                         }
 794                 }
 795
 796                 if (!*fname)
 797                         fname = ".";
 798
 799                 if (dir && *dir) {
 800                         olddir = push_dir(dir, 1);
 801
 802                         if (!olddir) {
 803                                 io_error=1;
 804                                 rprintf(FERROR,"push_dir %s : %s\n",
 805                                         dir,strerror(errno));
 806                                 continue;
 807                         }
 808
 809                         flist_dir = dir;
 810                 }
 811
 812                 if (one_file_system)
 813                         set_filesystem(fname);
 814
 815                 send_file_name(f,flist,fname,recurse,FLAG_DELETE);
 816
 817                 if (olddir != NULL) {
 818                         flist_dir = NULL;
 819                         if (pop_dir(olddir) != 0) {
 820                                 rprintf(FERROR,"pop_dir %s : %s\n",
 821                                         dir,strerror(errno));
 822                                 exit_cleanup(RERR_FILESELECT);
 823                         }
 824                 }
 825         }
 826
 827         topsrcname[0] = '\0';
 828
 829         if (f != -1) {
 830                 send_file_entry(NULL,f,0);
 831         }
 832
 833         if (verbose && recurse && !am_server && f != -1)
 834                 rprintf(FINFO,"done\n");
 835
 836         clean_flist(flist, 0);
 837
 838         /* now send the uid/gid list. This was introduced in protocol
 839            version 15 */
 840         if (f != -1 && remote_version >= 15) {
 841                 send_uid_list(f);
 842         }
 843
 844         /* if protocol version is >= 17 then send the io_error flag */
 845         if (f != -1 && remote_version >= 17) {
 846                 extern int module_id;
 847                 write_int(f, lp_ignore_errors(module_id)? 0 : io_error);
 848         }
 849
 850         if (f != -1) {
 851                 io_end_buffering(f);
 852                 stats.flist_size = stats.total_written - start_write;
 853                 stats.num_files = flist->count;
 854                 if (write_batch) /*  dw  */
 855                     write_batch_flist_info(flist->count, flist->files);
 856         }
 857
 858         if (verbose > 2)
 859                 rprintf(FINFO,"send_file_list done\n");
 860
 861         return flist;
 862 }
 863
 864
 865 struct file_list *recv_file_list(int f)
 866 {
 867   struct file_list *flist;
 868   unsigned char flags;
 869   int64 start_read;
 870   extern int list_only;
 871
 872   if (verbose && recurse && !am_server) {
 873     rprintf(FINFO,"receiving file list ... ");
 874     rflush(FINFO);
 875   }
 876
 877   start_read = stats.total_read;
 878
 879   flist = (struct file_list *)malloc(sizeof(flist[0]));
 880   if (!flist)
 881     goto oom;
 882
 883   flist->count=0;
 884   flist->malloced=1000;
 885   flist->files = (struct file_struct **)malloc(sizeof(flist->files[0])*
 886                                                flist->malloced);
 887   if (!flist->files)
 888     goto oom;
 889
 890
 891   for (flags=read_byte(f); flags; flags=read_byte(f)) {
 892     int i = flist->count;
 893
 894     if (i >= flist->malloced) {
 895           if (flist->malloced < 1000)
 896                   flist->malloced += 1000;
 897           else
 898                   flist->malloced *= 2;
 899           flist->files =(struct file_struct **)realloc(flist->files,
 900                                                        sizeof(flist->files[0])*
 901                                                        flist->malloced);
 902           if (!flist->files)
 903                   goto oom;
 904     }
 905
 906     receive_file_entry(&flist->files[i],flags,f);
 907
 908     if (S_ISREG(flist->files[i]->mode))
 909             stats.total_size += flist->files[i]->length;
 910
 911     flist->count++;
 912
 913     if (verbose > 2)
 914       rprintf(FINFO,"recv_file_name(%s)\n",f_name(flist->files[i]));
 915   }
 916
 917
 918   if (verbose > 2)
 919     rprintf(FINFO,"received %d names\n",flist->count);
 920
 921   clean_flist(flist, relative_paths);
 922
 923   if (verbose && recurse && !am_server) {
 924     rprintf(FINFO,"done\n");
 925   }
 926
 927   /* now recv the uid/gid list. This was introduced in protocol version 15 */
 928   if (f != -1 && remote_version >= 15) {
 929           recv_uid_list(f, flist);
 930   }
 931
 932   /* if protocol version is >= 17 then recv the io_error flag */
 933   if (f != -1 && remote_version >= 17  && !read_batch) {  /* dw-added readbatch */
 934           extern int module_id;
 935           extern int ignore_errors;
 936           if (lp_ignore_errors(module_id) || ignore_errors) {
 937                   read_int(f);
 938           } else {
 939                   io_error |= read_int(f);
 940           }
 941   }
 942
 943   if (list_only) {
 944           int i;
 945           for (i=0;i<flist->count;i++) {
 946                   list_file_entry(flist->files[i]);
 947           }
 948   }
 949
 950
 951   if (verbose > 2)
 952     rprintf(FINFO,"recv_file_list done\n");
 953
 954   stats.flist_size = stats.total_read - start_read;
 955   stats.num_files = flist->count;
 956
 957   return flist;
 958
 959 oom:
 960     out_of_memory("recv_file_list");
 961     return NULL; /* not reached */
 962 }
 963
 964
 965 int file_compare(struct file_struct **f1,struct file_struct **f2)
 966 {
 967         if (!(*f1)->basename && !(*f2)->basename) return 0;
 968         if (!(*f1)->basename) return -1;
 969         if (!(*f2)->basename) return 1;
 970         if ((*f1)->dirname == (*f2)->dirname)
 971                 return u_strcmp((*f1)->basename, (*f2)->basename);
 972         return u_strcmp(f_name(*f1),f_name(*f2));
 973 }
 974
 975
 976 int flist_find(struct file_list *flist,struct file_struct *f)
 977 {
 978         int low=0,high=flist->count-1;
 979
 980         if (flist->count <= 0) return -1;
 981
 982         while (low != high) {
 983                 int mid = (low+high)/2;
 984                 int ret = file_compare(&flist->files[flist_up(flist, mid)],&f);
 985                 if (ret == 0) return flist_up(flist, mid);
 986                 if (ret > 0) {
 987                         high=mid;
 988                 } else {
 989                         low=mid+1;
 990                 }
 991         }
 992
 993         if (file_compare(&flist->files[flist_up(flist,low)],&f) == 0)
 994                 return flist_up(flist,low);
 995         return -1;
 996 }
 997
 998
 999 /*
1000  * free up one file
1001  */
1002 void free_file(struct file_struct *file)
1003 {
1004         if (!file) return;
1005         if (file->basename) free(file->basename);
1006         if (file->link) free(file->link);
1007         if (file->sum) free(file->sum);
1008         *file = null_file;
1009 }
1010
1011
1012 /*
1013  * allocate a new file list
1014  */
1015 struct file_list *flist_new()
1016 {
1017         struct file_list *flist;
1018
1019         flist = (struct file_list *)malloc(sizeof(flist[0]));
1020         if (!flist) out_of_memory("send_file_list");
1021
1022         flist->count=0;
1023         flist->malloced = 1000;
1024         flist->files = (struct file_struct **)malloc(sizeof(flist->files[0])*
1025                                                      flist->malloced);
1026         if (!flist->files) out_of_memory("send_file_list");
1027 #if ARENA_SIZE > 0
1028         flist->string_area = string_area_new(0);
1029 #else
1030         flist->string_area = NULL;
1031 #endif
1032         return flist;
1033 }
1034 /*
1035  * free up all elements in a flist
1036  */
1037 void flist_free(struct file_list *flist)
1038 {
1039         int i;
1040         for (i=1;i<flist->count;i++) {
1041                 if (!flist->string_area)
1042                         free_file(flist->files[i]);
1043                 free(flist->files[i]);
1044         }
1045         memset((char *)flist->files, 0, sizeof(flist->files[0])*flist->count);
1046         free(flist->files);
1047         if (flist->string_area)
1048                 string_area_free(flist->string_area);
1049         memset((char *)flist, 0, sizeof(*flist));
1050         free(flist);
1051 }
1052
1053
1054 /*
1055  * This routine ensures we don't have any duplicate names in our file list.
1056  * duplicate names can cause corruption because of the pipelining
1057  */
1058 static void clean_flist(struct file_list *flist, int strip_root)
1059 {
1060         int i;
1061
1062         if (!flist || flist->count == 0)
1063                 return;
1064
1065         qsort(flist->files,flist->count,
1066               sizeof(flist->files[0]),
1067               (int (*)())file_compare);
1068
1069         for (i=1;i<flist->count;i++) {
1070                 if (flist->files[i]->basename &&
1071                     flist->files[i-1]->basename &&
1072                     strcmp(f_name(flist->files[i]),
1073                            f_name(flist->files[i-1])) == 0) {
1074                         if (verbose > 1 && !am_server)
1075                                 rprintf(FINFO,"removing duplicate name %s from file list %d\n",
1076                                         f_name(flist->files[i-1]),i-1);
1077                         /* it's not great that the flist knows the semantics of the
1078                          * file memory usage, but i'd rather not add a flag byte
1079                          * to that struct. XXX can i use a bit in the flags field? */
1080                         if (flist->string_area)
1081                                 flist->files[i][0] = null_file;
1082                         else
1083                                 free_file(flist->files[i]);
1084                 }
1085         }
1086
1087         if (strip_root) {
1088                 /* we need to strip off the root directory in the case
1089                    of relative paths, but this must be done _after_
1090                    the sorting phase */
1091                 for (i=0;i<flist->count;i++) {
1092                         if (flist->files[i]->dirname &&
1093                             flist->files[i]->dirname[0] == '/') {
1094                                 memmove(&flist->files[i]->dirname[0],
1095                                         &flist->files[i]->dirname[1],
1096                                         strlen(flist->files[i]->dirname));
1097                         }
1098
1099                         if (flist->files[i]->dirname &&
1100                             !flist->files[i]->dirname[0]) {
1101                                 flist->files[i]->dirname = NULL;
1102                         }
1103                 }
1104         }
1105
1106
1107         if (verbose <= 3) return;
1108
1109         for (i=0;i<flist->count;i++) {
1110                 rprintf(FINFO,"[%d] i=%d %s %s mode=0%o len=%.0f\n",
1111                         (int) getpid(), i,
1112                         NS(flist->files[i]->dirname),
1113                         NS(flist->files[i]->basename),
1114                         (int) flist->files[i]->mode,
1115                         (double)flist->files[i]->length);
1116         }
1117 }
1118
1119
1120 /*
1121  * return the full filename of a flist entry
1122  */
1123 char *f_name(struct file_struct *f)
1124 {
1125         static char names[10][MAXPATHLEN];
1126         static int n;
1127         char *p = names[n];
1128
1129         if (!f || !f->basename) return NULL;
1130
1131         n = (n+1)%10;
1132
1133         if (f->dirname) {
1134                 strlcpy(p, f->dirname, MAXPATHLEN);
1135                 strlcat(p, "/", MAXPATHLEN);
1136                 strlcat(p, f->basename, MAXPATHLEN);
1137         } else {
1138                 strlcpy(p, f->basename, MAXPATHLEN);
1139         }
1140
1141         return p;
1142 }
1143