git.gag.com Git - debian/dump/blob - restore/main.c

   1 /*
   2  *      Ported to Linux's Second Extended File System as part of the
   3  *      dump and restore backup suit
   4  *      Remy Card <card@Linux.EU.Org>, 1994-1997
   5  *      Stelian Pop <stelian@popies.net>, 1999-2000
   6  *      Stelian Pop <stelian@popies.net> - Alcôve <www.alcove.com>, 2000-2002
   7  */
   8
   9 /*
  10  * Copyright (c) 1983, 1993
  11  *      The Regents of the University of California.  All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions and the following disclaimer.
  18  * 2. Redistributions in binary form must reproduce the above copyright
  19  *    notice, this list of conditions and the following disclaimer in the
  20  *    documentation and/or other materials provided with the distribution.
  21  * 3. Neither the name of the University nor the names of its contributors
  22  *    may be used to endorse or promote products derived from this software
  23  *    without specific prior written permission.
  24  *
  25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  35  * SUCH DAMAGE.
  36  */
  37
  38 #ifndef lint
  39 static const char rcsid[] =
  40         "$Id: main.c,v 1.46 2004/04/13 13:04:33 stelian Exp $";
  41 #endif /* not lint */
  42
  43 #include <config.h>
  44 #include <compatlfs.h>
  45 #include <sys/types.h>
  46 #include <fcntl.h>
  47 #include <sys/param.h>
  48 #include <sys/stat.h>
  49 #include <errno.h>
  50
  51 #ifdef  __linux__
  52 #include <sys/time.h>
  53 #include <time.h>
  54 #ifdef HAVE_EXT2FS_EXT2_FS_H
  55 #include <ext2fs/ext2_fs.h>
  56 #else
  57 #include <linux/ext2_fs.h>
  58 #endif
  59 #include <bsdcompat.h>
  60 #include <signal.h>
  61 #include <string.h>
  62 #else   /* __linux__ */
  63 #ifdef sunos
  64 #include <signal.h>
  65 #include <string.h>
  66 #include <sys/fcntl.h>
  67 #include <bsdcompat.h>
  68 #include <sys/mtio.h>
  69 #else
  70 #include <ufs/ufs/dinode.h>
  71 #endif
  72 #endif  /* __linux__ */
  73 #include <protocols/dumprestore.h>
  74
  75 #include <compaterr.h>
  76 #include <stdio.h>
  77 #include <stdlib.h>
  78 #include <unistd.h>
  79
  80 #ifdef  __linux__
  81 #include <ext2fs/ext2fs.h>
  82 #include <getopt.h>
  83 #endif
  84
  85 #include "pathnames.h"
  86 #include "restore.h"
  87 #include "extern.h"
  88
  89 int abortifconnerr = 1;         /* set to 1 if lib dumprmt.o should exit on connection errors
  90                                 otherwise just print a message using msg */
  91
  92 int     aflag = 0, bflag = 0, cvtflag = 0, dflag = 0, vflag = 0, yflag = 0;
  93 int     hflag = 1, mflag = 1, Mflag = 0, Nflag = 0, Vflag = 0, zflag = 0;
  94 int     uflag = 0, lflag = 0, Lflag = 0, oflag = 0;
  95 int     ufs2flag = 0;
  96 char    *Afile = NULL;
  97 int     dokerberos = 0;
  98 char    command = '\0';
  99 long    dumpnum = 1;
 100 long    volno = 0;
 101 long    ntrec;
 102 char    *dumpmap = NULL;
 103 char    *usedinomap = NULL;
 104 dump_ino_t maxino;
 105 time_t  dumptime;
 106 time_t  dumpdate;
 107 FILE    *terminal;
 108 char    *tmpdir;
 109 int     compare_ignore_not_found;
 110 int     compare_errors;
 111 char    filesys[NAMELEN];
 112 static const char *stdin_opt = NULL;
 113 char    *bot_script = NULL;
 114 dump_ino_t volinfo[TP_NINOS];
 115
 116 #ifdef USE_QFA
 117 FILE    *gTapeposfp;
 118 char    *gTapeposfile;
 119 char    gTps[255];
 120 long    gSeekstart;
 121 int     tapeposflag;
 122 int     gTapeposfd;
 123 int     createtapeposflag;
 124 unsigned long qfadumpdate;
 125 long long curtapepos;
 126 #endif /* USE_QFA */
 127
 128 long smtc_errno;
 129
 130 #if defined(__linux__) || defined(sunos)
 131 char    *__progname;
 132 #endif
 133
 134 static void obsolete __P((int *, char **[]));
 135 static void usage __P((void));
 136 static void use_stdin __P((const char *));
 137
 138 #define FORCED_UMASK (077)
 139
 140 int
 141 main(int argc, char *argv[])
 142 {
 143         int ch;
 144         dump_ino_t ino;
 145         char *inputdev = _PATH_DEFTAPE;
 146         char *symtbl = "./restoresymtable";
 147         char *p, name[MAXPATHLEN];
 148         FILE *filelist = NULL;
 149         char fname[MAXPATHLEN];
 150         mode_t orig_umask;
 151 #ifdef DEBUG_QFA
 152         time_t tistart, tiend, titaken;
 153 #endif
 154 #ifdef USE_QFA
 155         tapeposflag = 0;
 156         createtapeposflag = 0;
 157 #endif /* USE_QFA */
 158
 159         /* Temp files should *not* be readable.  We set permissions later. */
 160         orig_umask = umask(FORCED_UMASK);
 161         filesys[0] = '\0';
 162 #if defined(__linux__) || defined(sunos)
 163         __progname = argv[0];
 164 #endif
 165
 166         if (argc < 2)
 167                 usage();
 168
 169         if ((inputdev = getenv("TAPE")) == NULL)
 170                 inputdev = _PATH_DEFTAPE;
 171         if ((tmpdir = getenv("TMPDIR")) == NULL)
 172                 tmpdir = _PATH_TMP;
 173         if ((tmpdir = strdup(tmpdir)) == NULL)
 174                 err(1, "malloc tmpdir");
 175         for (p = tmpdir + strlen(tmpdir) - 1; p >= tmpdir && *p == '/'; p--)
 176                 ;
 177         obsolete(&argc, &argv);
 178         while ((ch = getopt(argc, argv,
 179                 "aA:b:CcdD:f:F:hi"
 180 #ifdef KERBEROS
 181                 "k"
 182 #endif
 183                 "lL:mMNo"
 184 #ifdef USE_QFA
 185                 "P:Q:"
 186 #endif
 187                 "Rrs:tT:uvVxX:y")) != -1)
 188                 switch(ch) {
 189                 case 'a':
 190                         aflag = 1;
 191                         break;
 192                 case 'A':
 193                         Afile = optarg;
 194                         aflag = 1;
 195                         break;
 196                 case 'b':
 197                         /* Change default tape blocksize. */
 198                         bflag = 1;
 199                         ntrec = strtol(optarg, &p, 10);
 200                         if (*p)
 201                                 errx(1, "illegal blocksize -- %s", optarg);
 202                         if (ntrec <= 0)
 203                                 errx(1, "block size must be greater than 0");
 204                         break;
 205                 case 'c':
 206                         cvtflag = 1;
 207                         break;
 208                 case 'D':
 209                         strncpy(filesys, optarg, NAMELEN);
 210                         filesys[NAMELEN - 1] = '\0';
 211                         break;
 212                 case 'T':
 213                         tmpdir = optarg;
 214                         break;
 215                 case 'd':
 216                         dflag = 1;
 217                         break;
 218                 case 'f':
 219                         if( !strcmp(optarg,"-") )
 220                                 use_stdin("-f");
 221                         inputdev = optarg;
 222                         break;
 223                 case 'F':
 224                         bot_script = optarg;
 225                         break;
 226                 case 'h':
 227                         hflag = 0;
 228                         break;
 229 #ifdef KERBEROS
 230                 case 'k':
 231                         dokerberos = 1;
 232                         break;
 233 #endif
 234                 case 'C':
 235                 case 'i':
 236 #ifdef USE_QFA
 237                 case 'P':
 238 #endif
 239                 case 'R':
 240                 case 'r':
 241                 case 't':
 242                 case 'x':
 243                         if (command != '\0')
 244                                 errx(1,
 245                                     "%c and %c options are mutually exclusive",
 246                                     ch, command);
 247                         command = ch;
 248 #ifdef USE_QFA
 249                         if (ch == 'P') {
 250                                 gTapeposfile = optarg;
 251                                 createtapeposflag = 1;
 252                         }
 253 #endif
 254
 255                         break;
 256                 case 'l':
 257                         lflag = 1;
 258                         break;
 259                 case 'L':
 260                         Lflag = strtol(optarg, &p, 10);
 261                         if (*p)
 262                                 errx(1, "illegal limit -- %s", optarg);
 263                         if (Lflag < 0)
 264                                 errx(1, "limit must be greater than 0");
 265                         break;
 266                 case 'm':
 267                         mflag = 0;
 268                         break;
 269                 case 'M':
 270                         Mflag = 1;
 271                         break;
 272                 case 'N':
 273                         Nflag = 1;
 274                         break;
 275                 case 'o':
 276                         oflag = 1;
 277                         break;
 278 #ifdef USE_QFA
 279                 case 'Q':
 280                         gTapeposfile = optarg;
 281                         tapeposflag = 1;
 282                         aflag = 1;
 283                         break;
 284 #endif
 285                 case 's':
 286                         /* Dumpnum (skip to) for multifile dump tapes. */
 287                         dumpnum = strtol(optarg, &p, 10);
 288                         if (*p)
 289                                 errx(1, "illegal dump number -- %s", optarg);
 290                         if (dumpnum <= 0)
 291                                 errx(1, "dump number must be greater than 0");
 292                         break;
 293                 case 'u':
 294                         uflag = 1;
 295                         break;
 296                 case 'v':
 297                         vflag = 1;
 298                         break;
 299                 case 'V':
 300                         Vflag = 1;
 301                         break;
 302                 case 'X':
 303                         if( !strcmp(optarg,"-") ) {
 304                                 use_stdin("-X");
 305                                 filelist = stdin;
 306                         }
 307                         else
 308                                 if ( !(filelist = fopen(optarg,"r")) )
 309                                         errx(1, "can't open file for reading -- %s", optarg);
 310                         break;
 311                 case 'y':
 312                         yflag = 1;
 313                         break;
 314                 default:
 315                         usage();
 316                 }
 317         argc -= optind;
 318         argv += optind;
 319
 320         if (command == '\0')
 321                 errx(1, "none of C, i, R, r, t or x options specified");
 322
 323 #ifdef USE_QFA
 324         if (!mflag && tapeposflag)
 325                 errx(1, "m and Q options are mutually exclusive");
 326
 327         if (tapeposflag && command != 'i' && command != 'x' && command != 't')
 328                 errx(1, "Q option is not valid for %c command", command);
 329 #endif
 330
 331         if (Afile && command != 'i' && command != 'x' && command != 't')
 332                 errx(1, "A option is not valid for %c command", command);
 333
 334         if (signal(SIGINT, onintr) == SIG_IGN)
 335                 (void) signal(SIGINT, SIG_IGN);
 336         if (signal(SIGTERM, onintr) == SIG_IGN)
 337                 (void) signal(SIGTERM, SIG_IGN);
 338         setlinebuf(stderr);
 339
 340         atexit(cleanup);
 341
 342         if (command == 'C' && inputdev[0] != '/' && strcmp(inputdev, "-")
 343 #ifdef RRESTORE
 344             && !strchr(inputdev, ':')
 345 #endif
 346           ) {
 347                 /* since we chdir into the directory we are comparing
 348                  * to, we must retain the full tape path */
 349                 char wd[MAXPATHLEN], fullpathinput[MAXPATHLEN];
 350                 if (!getcwd(wd, MAXPATHLEN))
 351                         err(1, "can't get current directory");
 352                 snprintf(fullpathinput, MAXPATHLEN, "%s/%s", wd, inputdev);
 353                 fullpathinput[MAXPATHLEN - 1] = '\0';
 354                 setinput(fullpathinput);
 355         }
 356         else
 357                 setinput(inputdev);
 358
 359         if (argc == 0 && !filelist) {
 360                 argc = 1;
 361                 *--argv = ".";
 362         }
 363
 364 #ifdef USE_QFA
 365         if (tapeposflag) {
 366                 msg("reading QFA positions from %s\n", gTapeposfile);
 367                 if ((gTapeposfp = fopen(gTapeposfile, "r")) == NULL)
 368                         errx(1, "can't open file for reading -- %s",
 369                                 gTapeposfile);
 370                 /* start reading header info */
 371                 if (fgets(gTps, sizeof(gTps), gTapeposfp) == NULL)
 372                         errx(1, "not requested format of -- %s", gTapeposfile);
 373                 gTps[strlen(gTps) - 1] = 0;     /* delete end of line */
 374                 if (strcmp(gTps, QFA_MAGIC) != 0)
 375                         errx(1, "not requested format of -- %s", gTapeposfile);
 376                 if (fgets(gTps, sizeof(gTps), gTapeposfp) == NULL)
 377                         errx(1, "not requested format of -- %s", gTapeposfile);
 378                 gTps[strlen(gTps) - 1] = 0;
 379                 if (strcmp(gTps, QFA_VERSION) != 0)
 380                         errx(1, "not requested format of -- %s", gTapeposfile);
 381                 /* read dumpdate */
 382                 if (fgets(gTps, sizeof(gTps), gTapeposfp) == NULL)
 383                         errx(1, "not requested format of -- %s", gTapeposfile);
 384                 gTps[strlen(gTps) - 1] = 0;
 385                 qfadumpdate = atol(gTps);
 386                 /* read empty line */
 387                 if (fgets(gTps, sizeof(gTps), gTapeposfp) == NULL)
 388                         errx(1, "not requested format of -- %s", gTapeposfile);
 389                 gTps[strlen(gTps) - 1] = 0;
 390                 /* read table header line */
 391                 if (fgets(gTps, sizeof(gTps), gTapeposfp) == NULL)
 392                         errx(1, "not requested format of -- %s", gTapeposfile);
 393                 gTps[strlen(gTps) - 1] = 0;
 394                 /* end reading header info */
 395                 /* tape position table starts here */
 396                 gSeekstart = ftell(gTapeposfp); /* remember for later use */
 397 #ifdef sunos
 398                 if (GetSCSIIDFromPath(inputdev, &scsiid)) {
 399                         errx(1, "can't get SCSI-ID for %s\n", inputdev);
 400                 }
 401                 if (scsiid < 0) {
 402                         errx(1, "can't get SCSI-ID for %s\n", inputdev);
 403                 }
 404                 sprintf(smtcpath, "/dev/rsmtc%ld,0", scsiid);
 405                 if ((fdsmtc = open(smtcpath, O_RDWR)) == -1) {
 406                         errx(1, "can't open smtc device: %s, %d\n", smtcpath, errno);
 407                 }
 408 #endif
 409         }
 410 #endif /* USE_QFA */
 411
 412         switch (command) {
 413         /*
 414          * Compare contents of tape.
 415          */
 416         case 'C': {
 417                 struct STAT stbuf;
 418
 419                 Vprintf(stdout, "Begin compare restore\n");
 420                 compare_ignore_not_found = 0;
 421                 compare_errors = 0;
 422                 setup();
 423                 printf("filesys = %s\n", filesys);
 424                 if (STAT(filesys, &stbuf) < 0)
 425                         err(1, "cannot stat directory %s", filesys);
 426                 if (chdir(filesys) < 0)
 427                         err(1, "cannot cd to %s", filesys);
 428                 compare_ignore_not_found = dumptime > 0;
 429                 initsymtable((char *)0);
 430                 extractdirs(0);
 431                 treescan(".", ROOTINO, nodeupdates);
 432                 compareleaves();
 433                 checkrestore();
 434                 if (compare_errors) {
 435                         printf("Some files were modified!\n");
 436                         exit(2);
 437                 }
 438                 break;
 439         }
 440
 441         /*
 442          * Interactive mode.
 443          */
 444         case 'i':
 445                 setup();
 446                 extractdirs(1);
 447                 initsymtable(NULL);
 448                 runcmdshell();
 449                 break;
 450         /*
 451          * Incremental restoration of a file system.
 452          */
 453         case 'r':
 454                 aflag = 1;      /* in -r or -R mode, -a is default */
 455                 setup();
 456                 if (dumptime > 0) {
 457                         /*
 458                          * This is an incremental dump tape.
 459                          */
 460                         Vprintf(stdout, "Begin incremental restore\n");
 461                         initsymtable(symtbl);
 462                         extractdirs(1);
 463                         removeoldleaves();
 464                         Vprintf(stdout, "Calculate node updates.\n");
 465                         treescan(".", ROOTINO, nodeupdates);
 466                         findunreflinks();
 467                         removeoldnodes();
 468                 } else {
 469                         /*
 470                          * This is a level zero dump tape.
 471                          */
 472                         Vprintf(stdout, "Begin level 0 restore\n");
 473                         initsymtable((char *)0);
 474                         extractdirs(1);
 475                         Vprintf(stdout, "Calculate extraction list.\n");
 476                         treescan(".", ROOTINO, nodeupdates);
 477                 }
 478                 createleaves(symtbl);
 479                 createlinks();
 480                 setdirmodes(FORCE);
 481                 checkrestore();
 482                 if (dflag) {
 483                         Vprintf(stdout, "Verify the directory structure\n");
 484                         treescan(".", ROOTINO, verifyfile);
 485                 }
 486                 dumpsymtable(symtbl, (long)1);
 487                 break;
 488         /*
 489          * Resume an incremental file system restoration.
 490          */
 491         case 'R':
 492                 aflag = 1;      /* in -r or -R mode, -a is default */
 493                 initsymtable(symtbl);
 494                 skipmaps();
 495                 skipdirs();
 496                 createleaves(symtbl);
 497                 createlinks();
 498                 setdirmodes(FORCE);
 499                 checkrestore();
 500                 dumpsymtable(symtbl, (long)1);
 501                 break;
 502
 503 /* handle file names from either text file (-X) or the command line */
 504 #define NEXTFILE(p) \
 505         p = NULL; \
 506         if (argc) { \
 507                 --argc; \
 508                 p = *argv++; \
 509         } \
 510         else if (filelist) { \
 511                 if ((p = fgets(fname, MAXPATHLEN, filelist))) { \
 512                         if ( *p && *(p + strlen(p) - 1) == '\n' ) /* possible null string */ \
 513                                 *(p + strlen(p) - 1) = '\0'; \
 514                         if ( !*p ) /* skip empty lines */ \
 515                                 continue; \
 516                         } \
 517         }
 518
 519         /*
 520          * List contents of tape.
 521          */
 522         case 't':
 523                 setup();
 524                 extractdirs(0);
 525                 initsymtable((char *)0);
 526                 printvolinfo();
 527                 for (;;) {
 528                         NEXTFILE(p);
 529                         if (!p)
 530                                 break;
 531                         canon(p, name, sizeof(name));
 532                         ino = dirlookup(name);
 533                         if (ino == 0)
 534                                 continue;
 535                         treescan(name, ino, listfile);
 536                 }
 537                 break;
 538         /*
 539          * Batch extraction of tape contents.
 540          */
 541         case 'x':
 542 #ifdef DEBUG_QFA
 543                 tistart = time(NULL);
 544 #endif
 545                 setup();
 546                 extractdirs(1);
 547                 initsymtable((char *)0);
 548                 for (;;) {
 549                         NEXTFILE(p);
 550                         if (!p)
 551                                 break;
 552                         canon(p, name, sizeof(name));
 553                         ino = dirlookup(name);
 554                         if (ino == 0)
 555                                 continue;
 556                         if (mflag)
 557                                 pathcheck(name);
 558                         treescan(name, ino, addfile);
 559                 }
 560                 createfiles();
 561                 createlinks();
 562                 setdirmodes(oflag ? FORCE : 0);
 563                 if (dflag)
 564                         checkrestore();
 565 #ifdef sunos
 566                 if (fdsmtc != -1) {
 567                         close(fdsmtc);
 568                 }
 569 #endif /* sunos */
 570 #ifdef DEBUG_QFA
 571                 tiend = time(NULL);
 572                 titaken = tiend - tistart;
 573                 msg("restore took %d:%02d:%02d\n", titaken / 3600,
 574                         (titaken % 3600) / 60, titaken % 60);
 575 #endif /* DEBUG_QFA */
 576                 break;
 577 #ifdef USE_QFA
 578         case 'P':
 579 #ifdef DEBUG_QFA
 580                 tistart = time(NULL);
 581 #endif
 582 #ifdef sunos
 583                 if (GetSCSIIDFromPath(inputdev, &scsiid)) {
 584                         errx(1, "can't get SCSI-ID for %s\n", inputdev);
 585                 }
 586                 if (scsiid < 0) {
 587                         errx(1, "can't get SCSI-ID for %s\n", inputdev);
 588                 }
 589                 sprintf(smtcpath, "/dev/rsmtc%ld,0", scsiid);
 590                 if ((fdsmtc = open(smtcpath, O_RDWR)) == -1) {
 591                         errx(1, "can't open smtc device: %s, %d\n", smtcpath, errno);
 592                 }
 593 #endif /* sunos */
 594                 setup();
 595                 msg("writing QFA positions to %s\n", gTapeposfile);
 596                 (void) umask(orig_umask);
 597                 if ((gTapeposfd = open(gTapeposfile, O_WRONLY|O_CREAT|O_TRUNC,
 598                                        S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP
 599                                        |S_IROTH|S_IWOTH)) < 0)
 600                         errx(1, "can't create tapeposfile\n");
 601                 (void) umask(FORCED_UMASK);
 602                 /* print QFA-file header */
 603                 sprintf(gTps, "%s\n%s\n%ld\n\n", QFA_MAGIC, QFA_VERSION, (unsigned long)spcl.c_date);
 604                 if (write(gTapeposfd, gTps, strlen(gTps)) != (ssize_t)strlen(gTps))
 605                         errx(1, "can't write tapeposfile\n");
 606                 sprintf(gTps, "ino\ttapeno\ttapepos\n");
 607                 if (write(gTapeposfd, gTps, strlen(gTps)) != (ssize_t)strlen(gTps))
 608                         errx(1, "can't write tapeposfile\n");
 609
 610                 extractdirs(1);
 611                 initsymtable((char *)0);
 612                 for (;;) {
 613                         NEXTFILE(p);
 614                         if (!p)
 615                                 break;
 616                         canon(p, name, sizeof(name));
 617                         ino = dirlookup(name);
 618                         if (ino == 0)
 619                                 continue;
 620                         if (mflag)
 621                                 pathcheck(name);
 622                         treescan(name, ino, addfile);
 623                 }
 624                 createfiles();
 625 #ifdef sunos
 626                 if (fdsmtc != -1) {
 627                         close(fdsmtc);
 628                 }
 629 #endif /* sunos */
 630 #ifdef DEBUG_QFA
 631                 tiend = time(NULL);
 632                 titaken = tiend - tistart;
 633                 msg("writing QFA positions took %d:%02d:%02d\n", titaken / 3600,
 634                         (titaken % 3600) / 60, titaken % 60);
 635 #endif /* DEBUG_QFA */
 636                 break;
 637 #endif  /* USE_QFA */
 638         }
 639         exit(0);
 640         /* NOTREACHED */
 641         return 0;       /* gcc shut up */
 642 }
 643
 644 static void
 645 usage(void)
 646 {
 647         char white[MAXPATHLEN];
 648         const char *ext2ver, *ext2date;
 649
 650         memset(white, ' ', MAXPATHLEN);
 651         white[MIN(strlen(__progname), MAXPATHLEN - 1)] = '\0';
 652
 653 #ifdef __linux__
 654         ext2fs_get_library_version(&ext2ver, &ext2date);
 655         (void)fprintf(stderr, "%s %s (using libext2fs %s of %s)\n",
 656                       __progname, _DUMP_VERSION, ext2ver, ext2date);
 657 #else
 658         (void)fprintf(stderr, "%s %s\n", __progname, _DUMP_VERSION);
 659 #endif
 660
 661 #ifdef KERBEROS
 662 #define kerbflag "k"
 663 #else
 664 #define kerbflag
 665 #endif
 666
 667 #ifdef USE_QFA
 668 #define qfaflag "[-Q file] "
 669 #else
 670 #define qfaflag
 671 #endif
 672
 673         fprintf(stderr,
 674                 "usage:"
 675                 "\t%s -C [-cd" kerbflag "lMvVy] [-b blocksize] [-D filesystem] [-f file]\n"
 676                 "\t%s    [-F script] [-L limit] [-s fileno]\n"
 677                 "\t%s -i [-acdh" kerbflag "lmMouvVy] [-A file] [-b blocksize] [-f file]\n"
 678                 "\t%s    [-F script] " qfaflag "[-s fileno]\n"
 679 #ifdef USE_QFA
 680                 "\t%s -P file [-acdh" kerbflag "lmMuvVy] [-A file] [-b blocksize]\n"
 681                 "\t%s    [-f file] [-F script] [-s fileno] [-X filelist] [file ...]\n"
 682 #endif
 683                 "\t%s -r [-cd" kerbflag "lMuvVy] [-b blocksize] [-f file] [-F script]\n"
 684                 "\t%s    [-s fileno] [-T directory]\n"
 685                 "\t%s -R [-cd" kerbflag "lMuvVy] [-b blocksize] [-f file] [-F script]\n"
 686                 "\t%s    [-s fileno] [-T directory]\n"
 687                 "\t%s -t [-cdh" kerbflag "lMuvVy] [-A file] [-b blocksize] [-f file]\n"
 688                 "\t%s    [-F script] " qfaflag "[-s fileno] [-X filelist] [file ...]\n"
 689                 "\t%s -x [-acdh" kerbflag "lmMouvVy] [-A file] [-b blocksize] [-f file]\n"
 690                 "\t%s    [-F script] " qfaflag "[-s fileno] [-X filelist] [file ...]\n",
 691                 __progname, white,
 692                 __progname, white,
 693 #ifdef USE_QFA
 694                 __progname, white,
 695 #endif
 696                 __progname, white,
 697                 __progname, white,
 698                 __progname, white,
 699                 __progname, white);
 700         exit(1);
 701 }
 702
 703 /*
 704  * obsolete --
 705  *      Change set of key letters and ordered arguments into something
 706  *      getopt(3) will like.
 707  */
 708 static void
 709 obsolete(int *argcp, char **argvp[])
 710 {
 711         int argc, flags;
 712         char *ap, **argv, *flagsp = NULL, **nargv, *p = NULL;
 713
 714         /* Setup. */
 715         argv = *argvp;
 716         argc = *argcp;
 717
 718         /* Return if no arguments or first argument has leading dash. */
 719         ap = argv[1];
 720         if (argc == 1 || *ap == '-')
 721                 return;
 722
 723         /* Allocate space for new arguments. */
 724         if ((*argvp = nargv = malloc((argc + 1) * sizeof(char *))) == NULL ||
 725             (p = flagsp = malloc(strlen(ap) + 2)) == NULL)
 726                 err(1, "malloc args");
 727
 728         *nargv++ = *argv;
 729         argv += 2, argc -= 2;
 730
 731         for (flags = 0; *ap; ++ap) {
 732                 switch (*ap) {
 733                 case 'A':
 734                 case 'b':
 735                 case 'D':
 736                 case 'f':
 737                 case 'F':
 738                 case 'L':
 739                 case 'Q':
 740                 case 's':
 741                 case 'T':
 742                 case 'X':
 743                         if (*argv == NULL) {
 744                                 warnx("option requires an argument -- %c", *ap);
 745                                 usage();
 746                         }
 747                         if ((nargv[0] = malloc(strlen(*argv) + 2 + 1)) == NULL)
 748                                 err(1, "malloc arg");
 749                         nargv[0][0] = '-';
 750                         nargv[0][1] = *ap;
 751                         (void)strcpy(&nargv[0][2], *argv);
 752                         ++argv;
 753                         ++nargv;
 754                         break;
 755                 default:
 756                         if (!flags) {
 757                                 *p++ = '-';
 758                                 flags = 1;
 759                         }
 760                         *p++ = *ap;
 761                         break;
 762                 }
 763         }
 764
 765         /* Terminate flags. */
 766         if (flags) {
 767                 *p = '\0';
 768                 *nargv++ = flagsp;
 769         }
 770
 771         /* Copy remaining arguments. */
 772         while ((*nargv++ = *argv++));
 773
 774         /* Update argument count. */
 775         *argcp = nargv - *argvp - 1;
 776 }
 777
 778 /*
 779  * use_stdin --
 780  *      reserve stdin for opt (avoid conflicts)
 781  */
 782 void
 783 use_stdin(const char *opt)
 784 {
 785         if (stdin_opt)
 786                 errx(1, "can't handle standard input for both %s and %s",
 787                         stdin_opt, opt);
 788         stdin_opt = opt;
 789 }