usr.sbin/ctm/mkCTM/mkctm.c

   1 /* $FreeBSD: src/usr.sbin/ctm/mkCTM/mkctm.c,v 1.9.6.1 2000/12/11 01:03:30 obrien Exp $ */
   2
   3 /* Still missing:
   4  *
   5  * mkctm
   6  *      -B regex        Bogus
   7  *      -I regex        Ignore
   8  *      -D int          Damage
   9  *      -q              decrease verbosity
  10  *      -v              increase verbosity
  11  *      -l file         logfile
  12  *      name            cvs-cur
  13  *      prefix          src/secure
  14  *      dir1            "Soll"
  15  *      dir2            "Ist"
  16  *
  17  */
  18
  19 #include <sys/types.h>
  20 #include <sys/stat.h>
  21 #include <sys/mman.h>
  22 #include <sys/wait.h>
  23 #include <dirent.h>
  24 #include <regex.h>
  25 #include <stdio.h>
  26 #include <fcntl.h>
  27 #include <string.h>
  28 #include <stdlib.h>
  29 #include <unistd.h>
  30 #include <md5.h>
  31 #include <err.h>
  32 #include <paths.h>
  33 #include <signal.h>
  34
  35 #define DEFAULT_IGNORE  "/CVS$|/\\.#|00_TRANS\\.TBL$"
  36 #define DEFAULT_BOGUS   "\\.core$|\\.orig$|\\.rej$|\\.o$"
  37 regex_t reg_ignore,  reg_bogus;
  38 int     flag_ignore, flag_bogus;
  39
  40 int     verbose;
  41 int     damage, damage_limit;
  42 int     change;
  43
  44 FILE    *logf;
  45
  46 u_long s1_ignored,      s2_ignored;
  47 u_long s1_bogus,        s2_bogus;
  48 u_long s1_wrong,        s2_wrong;
  49 u_long s_new_dirs,      s_new_files,    s_new_bytes;
  50 u_long s_del_dirs,      s_del_files,                    s_del_bytes;
  51 u_long                  s_files_chg,    s_bytes_add,    s_bytes_del;
  52 u_long s_same_dirs,     s_same_files,   s_same_bytes;
  53 u_long                  s_edit_files,   s_edit_bytes,   s_edit_saves;
  54 u_long                  s_sub_files,    s_sub_bytes;
  55
  56 void
  57 Usage(void)
  58 {
  59         fprintf(stderr,
  60                 "usage: mkctm [-options] name number timestamp prefix dir1 dir2\n");
  61         fprintf(stderr, "options:\n");
  62         fprintf(stderr, "\t\t-B bogus_regexp\n");
  63         fprintf(stderr, "\t\t-D damage_limit\n");
  64         fprintf(stderr, "\t\t-I ignore_regexp\n");
  65         fprintf(stderr, "\t\t-q\n");
  66         fprintf(stderr, "\t\t-v\n");
  67 }
  68
  69 void
  70 print_stat(FILE *fd, char *pre)
  71 {
  72     fprintf(fd, "%sNames:\n", pre);
  73     fprintf(fd, "%s  ignore:  %5lu ref   %5lu target\n",
  74             pre, s1_ignored, s2_ignored);
  75     fprintf(fd, "%s  bogus:   %5lu ref   %5lu target\n",
  76             pre, s1_bogus, s2_bogus);
  77     fprintf(fd, "%s  wrong:   %5lu ref   %5lu target\n",
  78             pre, s1_wrong, s2_wrong);
  79     fprintf(fd, "%sDelta:\n", pre);
  80     fprintf(fd, "%s  new:     %5lu dirs  %5lu files  %9lu plus\n",
  81             pre, s_new_dirs, s_new_files, s_new_bytes);
  82     fprintf(fd, "%s  del:     %5lu dirs  %5lu files                   %9lu minus\n",
  83             pre, s_del_dirs, s_del_files, s_del_bytes);
  84     fprintf(fd, "%s  chg:                 %5lu files  %9lu plus   %9lu minus\n",
  85             pre, s_files_chg, s_bytes_add, s_bytes_del);
  86     fprintf(fd, "%s  same:    %5lu dirs  %5lu files  %9lu bytes\n",
  87             pre, s_same_dirs, s_same_files, s_same_bytes);
  88     fprintf(fd, "%sMethod:\n", pre);
  89     fprintf(fd, "%s  edit:                %5lu files  %9lu bytes  %9lu saved\n",
  90             pre, s_edit_files, s_edit_bytes, s_edit_saves);
  91     fprintf(fd, "%s  sub:                 %5lu files  %9lu bytes\n",
  92             pre, s_sub_files, s_sub_bytes);
  93
  94 }
  95
  96 void
  97 stat_info(int foo)
  98 {
  99         signal(SIGINFO, stat_info);
 100         print_stat(stderr, "INFO: ");
 101 }
 102
 103 void DoDir(const char *dir1, const char *dir2, const char *name);
 104
 105 static struct stat st;
 106 static __inline struct stat *
 107 StatFile(char *name)
 108 {
 109         if (lstat(name, &st) < 0)
 110                 err(1, "couldn't stat %s", name);
 111         return &st;
 112 }
 113
 114 int
 115 dirselect(struct dirent *de)
 116 {
 117         if (!strcmp(de->d_name, "."))   return 0;
 118         if (!strcmp(de->d_name, ".."))  return 0;
 119         return 1;
 120 }
 121
 122 void
 123 name_stat(const char *pfx, const char *dir, const char *name, struct dirent *de)
 124 {
 125         char *buf = alloca(strlen(dir) + strlen(name) +
 126                 strlen(de->d_name) + 3);
 127         struct stat *st;
 128
 129         strcpy(buf, dir);
 130                 strcat(buf, "/"); strcat(buf, name);
 131                 strcat(buf, "/"); strcat(buf, de->d_name);
 132         st = StatFile(buf);
 133         printf("%s %s%s %u %u %o",
 134             pfx, name, de->d_name,
 135             st->st_uid, st->st_gid, st->st_mode & ~S_IFMT);
 136         fprintf(logf, "%s %s%s\n", pfx, name, de->d_name);
 137         if (verbose > 1) {
 138                 fprintf(stderr, "%s %s%s\n", pfx, name, de->d_name);
 139         }
 140 }
 141
 142 void
 143 Equ(const char *dir1, const char *dir2, const char *name, struct dirent *de)
 144 {
 145         if (de->d_type == DT_DIR) {
 146                 char *p = alloca(strlen(name)+strlen(de->d_name)+2);
 147
 148                 strcpy(p, name);  strcat(p, de->d_name); strcat(p, "/");
 149                 DoDir(dir1, dir2, p);
 150                 s_same_dirs++;
 151         } else {
 152                 char *buf1 = alloca(strlen(dir1) + strlen(name) +
 153                         strlen(de->d_name) + 3);
 154                 char *buf2 = alloca(strlen(dir2) + strlen(name) +
 155                         strlen(de->d_name) + 3);
 156                 char *m1, md5_1[33], *m2, md5_2[33];
 157                 u_char *p1, *p2;
 158                 int fd1, fd2;
 159                 struct stat s1, s2;
 160
 161                 strcpy(buf1, dir1);
 162                         strcat(buf1, "/"); strcat(buf1, name);
 163                         strcat(buf1, "/"); strcat(buf1, de->d_name);
 164                 fd1 = open(buf1, O_RDONLY);
 165                 if(fd1 < 0) { err(3, "%s", buf1); }
 166                 fstat(fd1, &s1);
 167                 strcpy(buf2, dir2);
 168                         strcat(buf2, "/"); strcat(buf2, name);
 169                         strcat(buf2, "/"); strcat(buf2, de->d_name);
 170                 fd2 = open(buf2, O_RDONLY);
 171                 if(fd2 < 0) { err(3, "%s", buf2); }
 172                 fstat(fd2, &s2);
 173 #if 0
 174                 /* XXX if we could just trust the size to change... */
 175                 if (s1.st_size == s2.st_size) {
 176                         s_same_files++;
 177                         s_same_bytes += s1.st_size;
 178                         close(fd1);
 179                         close(fd2);
 180                         goto finish;
 181                 }
 182 #endif
 183                 p1=mmap(0, s1.st_size, PROT_READ, MAP_PRIVATE, fd1, 0);
 184                 if (p1 == (u_char *)MAP_FAILED) { err(3, "%s", buf1); }
 185                 close(fd1);
 186
 187                 p2=mmap(0, s2.st_size, PROT_READ, MAP_PRIVATE, fd2, 0);
 188                 if (p2 == (u_char *)MAP_FAILED) { err(3, "%s", buf2); }
 189                 close(fd2);
 190
 191                 /* If identical, we're done. */
 192                 if((s1.st_size == s2.st_size) && !memcmp(p1, p2, s1.st_size)) {
 193                         s_same_files++;
 194                         s_same_bytes += s1.st_size;
 195                         goto finish;
 196                 }
 197
 198                 s_files_chg++;
 199                 change++;
 200                 if (s1.st_size > s2.st_size)
 201                         s_bytes_del += (s1.st_size - s2.st_size);
 202                 else
 203                         s_bytes_add += (s2.st_size - s1.st_size);
 204
 205                 m1 = MD5Data(p1, s1.st_size, md5_1);
 206                 m2 = MD5Data(p2, s2.st_size, md5_2);
 207
 208                 /* Just a curiosity... */
 209                 if(!strcmp(m1, m2)) {
 210                         if (s1.st_size != s2.st_size)
 211                                 fprintf(stderr,
 212                 "Notice: MD5 same for files of diffent size:\n\t%s\n\t%s\n",
 213                                         buf1, buf2);
 214                         goto finish;
 215                 }
 216
 217                 {
 218                         u_long l = s2.st_size + 2;
 219                         u_char *cmd = alloca(strlen(buf1)+strlen(buf2)+100);
 220                         u_char *ob = alloca(l), *p;
 221                         int j;
 222                         FILE *F;
 223
 224                         if (s1.st_size && p1[s1.st_size-1] != '\n') {
 225                                 if (verbose > 0)
 226                                         fprintf(stderr,
 227                                             "last char != \\n in %s\n",
 228                                              buf1);
 229                                 goto subst;
 230                         }
 231
 232                         if (s2.st_size && p2[s2.st_size-1] != '\n') {
 233                                 if (verbose > 0)
 234                                         fprintf(stderr,
 235                                             "last char != \\n in %s\n",
 236                                              buf2);
 237                                 goto subst;
 238                         }
 239
 240                         for (p=p1; p<p1+s1.st_size; p++)
 241                                 if (!*p) {
 242                                         if (verbose > 0)
 243                                                 fprintf(stderr,
 244                                                     "NULL char in %s\n",
 245                                                      buf1);
 246                                         goto subst;
 247                                 }
 248
 249                         for (p=p2; p<p2+s2.st_size; p++)
 250                                 if (!*p) {
 251                                         if (verbose > 0)
 252                                                 fprintf(stderr,
 253                                                     "NULL char in %s\n",
 254                                                      buf2);
 255                                         goto subst;
 256                                 }
 257
 258                         strcpy(cmd, "diff -n ");
 259                         strcat(cmd, buf1);
 260                         strcat(cmd, " ");
 261                         strcat(cmd, buf2);
 262                         F = popen(cmd, "r");
 263                         for (j = 1, l = 0; l < s2.st_size; ) {
 264                                 j = fread(ob+l, 1, s2.st_size - l, F);
 265                                 if (j < 1)
 266                                         break;
 267                                 l += j;
 268                                 continue;
 269                         }
 270                         if (j) {
 271                                 l = 0;
 272                                 while (EOF != fgetc(F))
 273                                         continue;
 274                         }
 275                         pclose(F);
 276
 277                         if (l && l < s2.st_size) {
 278                                 name_stat("CTMFN", dir2, name, de);
 279                                 printf(" %s %s %d\n", m1, m2, (unsigned)l);
 280                                 fwrite(ob, 1, l, stdout);
 281                                 putchar('\n');
 282                                 s_edit_files++;
 283                                 s_edit_bytes += l;
 284                                 s_edit_saves += (s2.st_size - l);
 285                         } else {
 286                         subst:
 287                                 name_stat("CTMFS", dir2, name, de);
 288                                 printf(" %s %s %u\n", m1, m2, (unsigned)s2.st_size);
 289                                 fwrite(p2, 1, s2.st_size, stdout);
 290                                 putchar('\n');
 291                                 s_sub_files++;
 292                                 s_sub_bytes += s2.st_size;
 293                         }
 294                 }
 295             finish:
 296                 munmap(p1, s1.st_size);
 297                 munmap(p2, s2.st_size);
 298         }
 299 }
 300
 301 void
 302 Add(const char *dir1, const char *dir2, const char *name, struct dirent *de)
 303 {
 304         change++;
 305         if (de->d_type == DT_DIR) {
 306                 char *p = alloca(strlen(name)+strlen(de->d_name)+2);
 307                 strcpy(p, name);  strcat(p, de->d_name); strcat(p, "/");
 308                 name_stat("CTMDM", dir2, name, de);
 309                 putchar('\n');
 310                 s_new_dirs++;
 311                 DoDir(dir1, dir2, p);
 312         } else if (de->d_type == DT_REG) {
 313                 char *buf2 = alloca(strlen(dir2) + strlen(name) +
 314                         strlen(de->d_name) + 3);
 315                 char *m2, md5_2[33];
 316                 u_char *p1;
 317                 struct stat st;
 318                 int fd1;
 319
 320                 strcpy(buf2, dir2);
 321                         strcat(buf2, "/"); strcat(buf2, name);
 322                         strcat(buf2, "/"); strcat(buf2, de->d_name);
 323                 fd1 = open(buf2, O_RDONLY);
 324                 if (fd1 < 0) { err(3, "%s", buf2); }
 325                 fstat(fd1, &st);
 326                 p1=mmap(0, st.st_size, PROT_READ, MAP_PRIVATE, fd1, 0);
 327                 if (p1 == (u_char *)MAP_FAILED) { err(3, "%s", buf2); }
 328                 close(fd1);
 329                 m2 = MD5Data(p1, st.st_size, md5_2);
 330                 name_stat("CTMFM", dir2, name, de);
 331                 printf(" %s %u\n", m2, (unsigned)st.st_size);
 332                 fwrite(p1, 1, st.st_size, stdout);
 333                 putchar('\n');
 334                 munmap(p1, st.st_size);
 335                 s_new_files++;
 336                 s_new_bytes += st.st_size;
 337         }
 338 }
 339
 340 void
 341 Del (const char *dir1, const char *dir2, const char *name, struct dirent *de)
 342 {
 343         damage++;
 344         change++;
 345         if (de->d_type == DT_DIR) {
 346                 char *p = alloca(strlen(name)+strlen(de->d_name)+2);
 347                 strcpy(p, name);  strcat(p, de->d_name); strcat(p, "/");
 348                 DoDir(dir1, dir2, p);
 349                 printf("CTMDR %s%s\n", name, de->d_name);
 350                 fprintf(logf, "CTMDR %s%s\n", name, de->d_name);
 351                 if (verbose > 1) {
 352                         fprintf(stderr, "CTMDR %s%s\n", name, de->d_name);
 353                 }
 354                 s_del_dirs++;
 355         } else if (de->d_type == DT_REG) {
 356                 char *buf1 = alloca(strlen(dir1) + strlen(name) +
 357                         strlen(de->d_name) + 3);
 358                 char *m1, md5_1[33];
 359                 strcpy(buf1, dir1);
 360                         strcat(buf1, "/"); strcat(buf1, name);
 361                         strcat(buf1, "/"); strcat(buf1, de->d_name);
 362                 m1 = MD5File(buf1, md5_1);
 363                 printf("CTMFR %s%s %s\n", name, de->d_name, m1);
 364                 fprintf(logf, "CTMFR %s%s %s\n", name, de->d_name, m1);
 365                 if (verbose > 1) {
 366                         fprintf(stderr, "CTMFR %s%s\n", name, de->d_name);
 367                 }
 368                 s_del_files++;
 369                 s_del_bytes += StatFile(buf1)->st_size;
 370         }
 371 }
 372
 373 void
 374 GetNext(int *i, int *n, struct dirent **nl, const char *dir, const char *name, u_long *ignored, u_long *bogus, u_long *wrong)
 375 {
 376         char buf[BUFSIZ];
 377         char buf1[BUFSIZ];
 378
 379         for (;;) {
 380                 for (;;) {
 381                         (*i)++;
 382                         if (*i >= *n)
 383                                 return;
 384                         strcpy(buf1, name);
 385                         if (buf1[strlen(buf1)-1] != '/')
 386                                 strcat(buf1, "/");
 387                         strcat(buf1, nl[*i]->d_name);
 388                         if (flag_ignore &&
 389                             !regexec(&reg_ignore, buf1, 0, 0, 0)) {
 390                                 (*ignored)++;
 391                                 fprintf(logf, "Ignore %s\n", buf1);
 392                                 if (verbose > 2) {
 393                                         fprintf(stderr, "Ignore %s\n", buf1);
 394                                 }
 395                         } else if (flag_bogus &&
 396                             !regexec(&reg_bogus, buf1, 0, 0, 0)) {
 397                                 (*bogus)++;
 398                                 fprintf(logf, "Bogus %s\n", buf1);
 399                                 fprintf(stderr, "Bogus %s\n", buf1);
 400                                 damage++;
 401                         } else {
 402                                 *buf = 0;
 403                                 if (*dir != '/')
 404                                         strcat(buf, "/");
 405                                 strcat(buf, dir);
 406                                 if (buf[strlen(buf)-1] != '/')
 407                                         strcat(buf, "/");
 408                                 strcat(buf, buf1);
 409                                 break;
 410                         }
 411                         free(nl[*i]); nl[*i] = 0;
 412                 }
 413                 /* If the filesystem didn't tell us, find type */
 414                 if (nl[*i]->d_type == DT_UNKNOWN)
 415                         nl[*i]->d_type = IFTODT(StatFile(buf)->st_mode);
 416                 if (nl[*i]->d_type == DT_REG || nl[*i]->d_type == DT_DIR)
 417                         break;
 418                 (*wrong)++;
 419                 if (verbose > 0)
 420                         fprintf(stderr, "Wrong %s\n", buf);
 421                 free(nl[*i]); nl[*i] = 0;
 422         }
 423 }
 424
 425 void
 426 DoDir(const char *dir1, const char *dir2, const char *name)
 427 {
 428         int i1, i2, n1, n2, i;
 429         struct dirent **nl1, **nl2;
 430         char *buf1 = alloca(strlen(dir1) + strlen(name) + 4);
 431         char *buf2 = alloca(strlen(dir2) + strlen(name) + 4);
 432
 433         strcpy(buf1, dir1); strcat(buf1, "/"); strcat(buf1, name);
 434         strcpy(buf2, dir2); strcat(buf2, "/"); strcat(buf2, name);
 435         n1 = scandir(buf1, &nl1, dirselect, alphasort);
 436         n2 = scandir(buf2, &nl2, dirselect, alphasort);
 437         i1 = i2 = -1;
 438         GetNext(&i1, &n1, nl1, dir1, name, &s1_ignored, &s1_bogus, &s1_wrong);
 439         GetNext(&i2, &n2, nl2, dir2, name, &s2_ignored, &s2_bogus, &s2_wrong);
 440         for (;i1 < n1 || i2 < n2;) {
 441
 442                 if (damage_limit && damage > damage_limit)
 443                         break;
 444
 445                 /* Get next item from list 1 */
 446                 if (i1 < n1 && !nl1[i1])
 447                         GetNext(&i1, &n1, nl1, dir1, name,
 448                                 &s1_ignored, &s1_bogus, &s1_wrong);
 449
 450                 /* Get next item from list 2 */
 451                 if (i2 < n2 && !nl2[i2])
 452                         GetNext(&i2, &n2, nl2, dir2, name,
 453                                 &s2_ignored, &s2_bogus, &s2_wrong);
 454
 455                 if (i1 >= n1 && i2 >= n2) {
 456                         /* Done */
 457                         break;
 458                 } else if (i1 >= n1 && i2 < n2) {
 459                         /* end of list 1, add anything left on list 2 */
 460                         Add(dir1, dir2, name, nl2[i2]);
 461                         free(nl2[i2]); nl2[i2] = 0;
 462                 } else if (i1 < n1 && i2 >= n2) {
 463                         /* end of list 2, delete anything left on list 1 */
 464                         Del(dir1, dir2, name, nl1[i1]);
 465                         free(nl1[i1]); nl1[i1] = 0;
 466                 } else if (!(i = strcmp(nl1[i1]->d_name, nl2[i2]->d_name))) {
 467                         /* Identical names */
 468                         if (nl1[i1]->d_type == nl2[i2]->d_type) {
 469                                 /* same type */
 470                                 Equ(dir1, dir2, name, nl1[i1]);
 471                         } else {
 472                                 /* different types */
 473                                 Del(dir1, dir2, name, nl1[i1]);
 474                                 Add(dir1, dir2, name, nl2[i2]);
 475                         }
 476                         free(nl1[i1]); nl1[i1] = 0;
 477                         free(nl2[i2]); nl2[i2] = 0;
 478                 } else if (i < 0) {
 479                         /* Something extra in list 1, delete it */
 480                         Del(dir1, dir2, name, nl1[i1]);
 481                         free(nl1[i1]); nl1[i1] = 0;
 482                 } else {
 483                         /* Something extra in list 2, add it */
 484                         Add(dir1, dir2, name, nl2[i2]);
 485                         free(nl2[i2]); nl2[i2] = 0;
 486                 }
 487         }
 488         if (n1 >= 0)
 489                 free(nl1);
 490         if (n2 >= 0)
 491                 free(nl2);
 492 }
 493
 494 int
 495 main(int argc, char **argv)
 496 {
 497         int i;
 498         extern char *optarg;
 499         extern int optind;
 500
 501         setbuf(stderr, NULL);
 502
 503 #if 0
 504         if (regcomp(&reg_bogus, DEFAULT_BOGUS, REG_EXTENDED | REG_NEWLINE))
 505                 /* XXX use regerror to explain it */
 506                 errx(1, "default regular expression argument to -B is botched");
 507         flag_bogus = 1;
 508
 509         if (regcomp(&reg_ignore, DEFAULT_IGNORE, REG_EXTENDED | REG_NEWLINE))
 510                 /* XXX use regerror to explain it */
 511                 errx(1, "default regular expression argument to -I is botched");
 512         flag_ignore = 1;
 513 #endif
 514
 515         while ((i = getopt(argc, argv, "D:I:B:l:qv")) != -1)
 516                 switch (i) {
 517                 case 'D':
 518                         damage_limit = strtol(optarg, 0, 0);
 519                         if (damage_limit < 0)
 520                                 errx(1, "damage limit must be positive");
 521                         break;
 522                 case 'I':
 523                         if (flag_ignore)
 524                                 regfree(&reg_ignore);
 525                         flag_ignore = 0;
 526                         if (!*optarg)
 527                                 break;
 528                         if (regcomp(&reg_ignore, optarg,
 529                             REG_EXTENDED | REG_NEWLINE))
 530                                 /* XXX use regerror to explain it */
 531                                 errx(1, "regular expression argument to -I is botched");
 532                         flag_ignore = 1;
 533                         break;
 534                 case 'B':
 535                         if (flag_bogus)
 536                                 regfree(&reg_bogus);
 537                         flag_bogus = 0;
 538                         if (!*optarg)
 539                                 break;
 540                         if (regcomp(&reg_bogus, optarg,
 541                             REG_EXTENDED | REG_NEWLINE))
 542                                 /* XXX use regerror to explain it */
 543                                 errx(1, "regular expression argument to -B is botched");
 544                         flag_bogus = 1;
 545                         break;
 546                 case 'l':
 547                         logf = fopen(optarg, "w");
 548                         if (!logf)
 549                                 err(1, "%s", optarg);
 550                         break;
 551                 case 'q':
 552                         verbose--;
 553                         break;
 554                 case 'v':
 555                         verbose++;
 556                         break;
 557                 case '?':
 558                 default:
 559                         Usage();
 560                         return (1);
 561                 }
 562         argc -= optind;
 563         argv += optind;
 564
 565         if (!logf)
 566                 logf = fopen(_PATH_DEVNULL, "w");
 567
 568         setbuf(stdout, 0);
 569
 570         if (argc != 6) {
 571                 Usage();
 572                 return (1);
 573         }
 574
 575         signal(SIGINFO, stat_info);
 576
 577         fprintf(stderr, "CTM_BEGIN 2.0 %s %s %s %s\n",
 578                 argv[0], argv[1], argv[2], argv[3]);
 579         fprintf(logf, "CTM_BEGIN 2.0 %s %s %s %s\n",
 580                 argv[0], argv[1], argv[2], argv[3]);
 581         printf("CTM_BEGIN 2.0 %s %s %s %s\n",
 582                 argv[0], argv[1], argv[2], argv[3]);
 583         DoDir(argv[4], argv[5], "");
 584         if (damage_limit && damage > damage_limit) {
 585                 print_stat(stderr, "DAMAGE: ");
 586                 errx(1, "damage of %d would exceed %d files",
 587                         damage, damage_limit);
 588         } else if (change < 2) {
 589                 errx(4, "no changes");
 590         } else {
 591                 printf("CTM_END ");
 592                 fprintf(logf, "CTM_END\n");
 593                 print_stat(stderr, "END: ");
 594         }
 595         exit(0);
 596 }