CHANGES

   1 $Id: CHANGES,v 1.121 2001/07/18 11:46:31 stelian Exp $
   2
   3 Changes between versions 0.4b22 and 0.4b23 (released ????????????)
   4 ==================================================================
   5
   6 1.      Fixed a buffer overflow in restore/tape.c. Patch provided by
   7         Marcus Meissner (Caldera International Security Dept.).
   8
   9 2.      Implement the Sun rmt extended protocol. Patch submitted
  10         by Ian Gordon <iangordon@users.sourceforge.net>.
  11
  12 3.      Check for the e2fsprogs header <ext2fs/ext2_fs.h> instead of
  13         the linux kernel header. This ensures that dump always has the
  14         latest version of this file. Patch submitted by
  15         Andreas Dilger <adilger@turbolinux.com>.
  16
  17 4.      Report any filesystem present in either /etc/fstab with a
  18         positive passno or /etc/dumpdates in dump -w output.
  19         Patch submitted by Andreas Dilger <adilger@turbolinux.com>.
  20
  21 5.      Fixed the looping problem in dump introduced in the
  22         previous version.
  23
  24 6.      Changed the -B option of dump to limit the size of
  25         _compressed_ output per volume if compression is on.
  26         Patch contributed by Helmut Jarausch
  27         <jarausch@igpm.rwth-aachen.de>.
  28
  29 7.      Fixed a bug in reading the operator typed file/tape path for
  30         the next volume in restore.
  31
  32 Changes between versions 0.4b21 and 0.4b22 (released May 12, 2001)
  33 ==================================================================
  34
  35 1.      Made dump report the number of blocks dumped per volume.
  36         Thanks to Kenneth Porter <shiva@well.com> for the suggestion.
  37
  38 2.      Fix a bug in dump where waiting too much at the 'change volumes'
  39         question caused the volume to be rewritten. Thanks to
  40         Graham Reed <greed@users.sourceforge.net> for reporting the
  41         bug and providing a patch.
  42
  43 3.      Added a compression option to dump, contributed by Jerry
  44         Peters <gapeters@worldnet.att.net>.
  45
  46         WARNING: the compression works only on files/pipes and
  47         drives supporting variable block size.
  48
  49         WARNING2: tapes created using the compression feature are
  50         incompatible with the standard dump tape format, and a
  51         version of restore >= 0.4b22 will be needed for extraction.
  52
  53 4.      Fixed some compilation problems for glibc 2.2.2 and 64 bit
  54         architectures. Thanks to Paul Slootman <paul@debian.org> for
  55         the patch and to Bdale Garbee <bdale@gag.com> for forwarding
  56         it upstream.
  57
  58 5.      Many cleanups (CPP defines, const char warnings, check of
  59         ext2fs COMPAT flags, time_t cleanups, added libext2 version
  60         in dump usage text) by Andreas Dilger <adilger@turbolinux.com>.
  61
  62 6.      Made --prefix option work in configure. All the install path
  63         are now based on the configure parameters.
  64
  65 7.      Added the Quick File Access mode in dump/restore, contributed
  66         by Uwe Gohlke <uwe@ugsoft.de>. In this mode, dump stores in
  67         a file tape position for each inode, and this file is used by
  68         restore (if called with parameter Q and the filename)
  69         to directly position the tape at the file restore is currently
  70         working on.  This saves hours when restoring single files from
  71         large backups, saves the tapes and the drive's head. Use
  72         --enable-qfa option of configure to compile in the QFA support.
  73
  74 8.      Added the possibility to dump several files and directories
  75         in a single invocation of dump. Thanks to Uwe Gohlke
  76         <uwe@ugsoft.de> for implementing this option.
  77
  78 9.      Fixed the dumping and restoring of files with holes
  79         (files ending with holes didn't get dumped or restored
  80         correctly).
  81
  82 10.     Fixed a socket descriptor leak in dump, which leaved opened
  83         3 file descriptors per dump process (and there is one dump
  84         process per tape).
  85
  86 11.     Fixed dump large file system support, by explicit use of
  87         open64/lseek64/etc functions (explicit use needed because
  88         e2fsprogs libraries don't behave well when compiled with
  89         FILE_OFFSET_BITS=64).
  90
  91 Changes between versions 0.4b20 and 0.4b21 (released January 13, 2001)
  92 ======================================================================
  93
  94 1.      Fixed some bugs in the dump -w|-W logic introduced by
  95         the previous version. Thanks to Andreas Dilger
  96         <adilger@turbolinux.com> for his help on this one.
  97
  98 2.      Fixed again a compilation problem when using old e2fs
  99         headers (filesystem label related). Thanks to many users
 100         who reported this stupid error.
 101
 102 3.      Fixed a build problem on old lib5 based systems dealing with
 103         _PATH_MNTTAB being undefined. Thanks to John Adams
 104         <johna@onevista.com> for reporting the bug.
 105
 106 4.      Improved the error detection in restore when creating
 107         the temporary files in TMPDIR. Now restore will corectly
 108         report a 'no space left on device' error instead of
 109         strange errors which could imply an archive corruption.
 110         Thanks to Gabriel Somlo <somlo@cs.colostate.edu> and
 111         bgjenero <bgjenero@sympatico.ca> for reporting the bug.
 112
 113 5.      Added the throughput information in dump's progression
 114         messages.  Thanks to Andreas Dilger <adilger@turbolinux.com>
 115         for the patch.
 116
 117 6.      Use libext2fs's inode scanning routines, which are particularly
 118         robust when dealing with errors (especially when having some
 119         bad blocks on the filesystem). Many thanks to Colin
 120         <colin@horizon.com> for reporting the bug, investigating
 121         the issues, finding a workaround, writing the patch and
 122         fully testing it... (of course, if this patch will break
 123         anything, he is to blame for :-)).
 124
 125 7.      Made dump and restore LFS aware. Dump can dump a filesystem
 126         containing large files, generate a large file on output and
 127         restore can restore them. This feature is not enabled by
 128         default, use --enable-largefile option of configure to enable
 129         it (you need to have a LFS aware glibc though). Thanks to
 130         Andrea Arcangeli <andrea@suse.de> for submitting the patch,
 131         and to Theodore T'so <tytso@valinux.com> for his always
 132         useful thoughts.
 133
 134 8.      Made dump ask upon a tape write error if it should rewrite
 135         the current volume (assume this is a bad tape) or if it should
 136         assume an end-of-tape condition (useful for tape drives which
 137         behaves badly at the end of the tape). Thanks to Andreas
 138         Dilger <adilger@turbolinux.com> for the suggestion.
 139
 140 Changes between versions 0.4b19 and 0.4b20 (released November 10, 2000)
 141 =======================================================================
 142
 143 1.      Fixed a small compilation problem due to a change
 144         in the definintion of the struct sigaction in
 145         glibc 2.0 / libc5. Thanks to Gunther Schlegel
 146         <schlegel@riege.de> for reporting the bug and to
 147         Dave Platt <dplatt@snulbug.mtview.ca.us> for suggesting
 148         a fix.
 149
 150 2.      Modified the label and uuid analysis in order to be
 151         self-contained (independant of kernel/libc headers). This
 152         should fix the compile with older kernel/libc headers and
 153         will preserve the functionality. Thanks to Bernhard Erdmann
 154         <bernhard.erdmann@gmx.de> for reporting the bug.
 155
 156 3.      The 'exclude inode' option, if applied to a directory
 157         inode, excludes now correctly all the leaves of this
 158         directory. Thanks to John R. Dennison
 159         <gerdesas@users.sourceforge.net> for reporting the bug.
 160
 161 4.      Fixed the '-e' option to disable the possibility
 162         to exclude the root inode (which causes the dumps to
 163         be unreadable by restore). Prevented array overflow
 164         when multiple -e options are used.
 165
 166 5.      Fixed dump to correctly interpret a filesystem argument
 167         which is a mountpoint and it is not an absolute path
 168         (as specified in the fstab). Thanks to Bernhard R. Erdmann
 169         <be@berdmann.de> for reporting the bug.
 170
 171 6.      Made dump able to backup files larger than 2 GB. Note that
 172         dump still doesn't cope with files larger than 4 GB.
 173
 174 7.      Restore the real uid and gid before invoking an external
 175         RSH program (big hole when dump or restore is suid root!).
 176
 177 8.      Get the values for the default tape device and the location
 178         of fstab file from the system headers. Thanks to
 179         Andreas Dilger <adilger@turbolinux.com> for the patch.
 180
 181 9.      Made dump -w|-W report all recognized filesystems
 182         present in either /etc/fstab or /etc/dumpdates, and present
 183         the list in the same order as in fstab file. Thanks
 184         to Andreas Dilger <adilger@turbolinux.com> for the patch.
 185
 186 10.     Made dump's -a (automatic end of tape detection) the
 187         default. Specifying one of -B, -c, -d or -s options will
 188         override the EOM detection. Thanks to Andreas Dilger
 189         <adilger@turbolinux.com> for the patch.
 190
 191 11.     Save the ext2 filesystem label into the dump volume label.
 192         Specifying a volume label on the command line (-L option)
 193         will override this feature. Thanks to Andreas Dilger
 194         <adilger@turbolinux.com> for the patch.
 195
 196 Changes between versions 0.4b18 and 0.4b19 (released August 20, 2000)
 197 =====================================================================
 198
 199 1.      Fixed the signal handling in dump (which I broke in 0.4b17)
 200         which was causing several strange dump failures (dump
 201         hanged or segmentation faults etc).
 202
 203 2.      Specified the default blocksize in the dump man page.
 204
 205 3.      Changed two info messages of restore to be written on stdout
 206         instead of stderr in order to leave stderr only for errors
 207         or warnings. Thanks to Stephen Atwell
 208         <satwell@urbana.css.mot.com> for the suggestion.
 209
 210 4.      Corrected an off by one calculation which prevented
 211         dumping a directory having a 1 character name length.
 212         Thanks to Bernhard Erdmann <bernhard.erdmann@gmx.de>
 213         for reporting the bug.
 214
 215 5.      Reinforce dump in order to allow only level 0 and no
 216         -u option when dumping a subdirectory, and document
 217         this in the man page. Thanks to Bernhard Erdmann
 218         <bernhard.erdmann@gmx.de> for reporting the bug.
 219
 220 6.      Fixed a small harmless bug in restore which caused
 221         in some conditions hard links to be restored several
 222         times (therefore generation some warning messages).
 223         Thanks to Kenneth Porter <shiva@well.com> for
 224         reporting the bug.
 225
 226 7.      Updated the RPM spec file to the latest RedHat version,
 227         providing FHS packaging and other cosmetic changes.
 228         You will need RPM version >= 3.0.5 in order to build the RPM.
 229
 230 8.      Updated the configure script to check for libtermcap
 231         before checking for libreadline, because we need this
 232         library in order to compile the readline support.
 233
 234 9.      Made dump understand the LABEL= and UUID= notation
 235         both in /etc/fstab and on the command line. Note that
 236         you will need the /proc filesystem in order to use
 237         these notations. Thanks to Erik Troan <ewt@redhat.com>
 238         for providing the patch.
 239
 240 Changes between versions 0.4b17 and 0.4b18 (released June 30, 2000)
 241 ===================================================================
 242
 243 1.      Fixed a potential buffer overflow in restore. Thanks
 244         to Stan Bubrouski <satan@fastdial.net> for reporting
 245         the bug.
 246
 247 2.      Fixed a readline-related bug which prevented
 248         'cat DUMPFILE | restore -i -f -' from working. Thanks
 249         to Charles Karney <karney@users.sourceforge.net>
 250         for the bug report.
 251
 252 3.      Changed a few "panic" into "exit", causing restore to
 253         be more stable against some attacks (like the last one
 254         reported on Bugtraq, although the last version of restore
 255         was not vulnerable - just dumped core). Thanks to
 256         Andreas Hasenack <andreas@conectiva.com.br> for reporting
 257         the bugs to me.
 258
 259 4.      Removed the suid-root bit on dump and restore in the
 260         default build (and generated RPMs). It should be safer
 261         now. Users who need the suid-root capabilities in order
 262         to make network backups should read first the man page
 263         of dump and enable the suid bit manually.
 264
 265 5.      Added -ltermcap to the compile parameters for restore
 266         when using readline support, in order to make the compile
 267         process work on some systems (SuSE ?). Thanks to
 268         Patrik Schindler <poc@pocnet.net> for reporting the bug.
 269
 270 Changes between versions 0.4b16 and 0.4b17 (released June 1st, 2000)
 271 ====================================================================
 272
 273 1.      The -F script is called now *only* at the end of a tape,
 274         not at the end of the dump. Thanks to Christian Haul
 275         <haul@informatik.tu-darmstadt.de> for the bug report.
 276
 277         Normally, the device name and the current volume number
 278         are passed on the command line of the script. However,
 279         if you want the old style script (with no arguments
 280         passed on the command line), you can enable it in
 281         configure with the --enable-oldstylefscript.
 282
 283 2.      Use posix signal handling to preserve dump functionality
 284         with libc5. Thanks to Jeff Johnson <jbj@redhat.com> for
 285         the patch.
 286
 287 3.      Made the exit code of restore in case of a 'C'ompare
 288         command reflect the result of the compare. An exit status
 289         of 0 means the dump archive is correct, 1 means tape errors,
 290         2 means that some files were modified. Thanks to Kenneth Porter
 291         <shiva@well.com> for the suggestion.
 292
 293 4.      Made (finally) quotes work in interactive restore.
 294
 295 5.      Small fixes in order to allow dump to compile with a
 296         really old e2fsprogs version. Thanks to Ian Zimmerman
 297         <itz@speakeasy.org> for the bug report.
 298
 299 6.      Add GNU readline capabilities to interactive restore.
 300         Use configure's --enable-readline flag to enable this feature.
 301         Thanks to Patrik Schindler <poc@pocnet.net> for the
 302         suggestion.
 303
 304 7.      Do the compare on the fly in restore 'C' mode (this will
 305         allow not to exhaust the available /tmp space when
 306         ccmparing large files). Thanks to Kenneth Porter
 307         <shiva@well.com> for the suggestion.
 308
 309 Changes between versions 0.4b15 and 0.4b16 (released March 11, 2000)
 310 ====================================================================
 311
 312 1.      Fixed some several duplicate 'DUMP: DUMP:' in the
 313         output of dump.
 314
 315 2.      Corrected the estimation of blocks to dump. Note that
 316         this is still wrong for large directory inodes, due
 317         to the size of a BSD directory entry on the tape
 318         (estimation is based on the size of the ext2 directory,
 319         which is smaller because it doesn't contain the null
 320         character at the end).
 321
 322 3.      Made dump report the total number of MB written to
 323         tape at the end of run. Thanks to W. Reilly Cooley
 324         <wcooley@nakedape.cc> for the patch.
 325
 326 4.      Added the -X option to restore giving the possibility
 327         to read the names of the files to be extracted/listed
 328         from a text file (in addition of the command line).
 329         Thanks to Dejan Muhamedagic <dejan@quant-x.com> for the
 330         patch.
 331
 332 5.      Added the device name and the current volume number
 333         as arguments to the end of tape script (dump -F option).
 334
 335 6.      Made the multi-volume dump work again (after having
 336         broken it in 0.4b15).
 337
 338 Changes between versions 0.4b14 and 0.4b15 (released March 2, 2000)
 339 ===================================================================
 340
 341 1.      Added a prompt command in interactive restore mode. Thanks
 342         to Andreas Dilger <adilger@home.com> for the patch.
 343
 344 2.      Fixed a buffer overflow problem in dump (caused by
 345         not checking the size of the filesystem parameter).
 346         Thanks to Kim Yong-jun <loveyou@hackerslab.org> for
 347         reporting this on Bugtraq (and to several dump users
 348         who forwarded me his mail).
 349
 350 3.      Added the '-F script' option to dump in order to
 351         launch a script at the end of each tape (to be used
 352         with a tape changer, or to notify the sysadmin by
 353         pager etc.).
 354
 355 4.      Fixed a bug in restore compare code caused by the changes
 356         I made in 0.4b14.
 357
 358 5.      Fixed the treatment of options using the old BSD syntax
 359         in both dump and restore.
 360
 361 Changes between versions 0.4b13 and 0.4b14 (released February 10, 2000)
 362 =======================================================================
 363
 364 1.      Fixed a bug in dump which may have caused invalid deleted
 365         directories to be dumped out if they were deleted after the
 366         mapping pass. This could occure on active filesystem and lead
 367         to heap corruption (causing dump malfunction in many possible ways).
 368         Thanks to Jan Sanislo <oystr@cs.washington.edu> for finding this
 369         bug and submitting the patch.
 370
 371 2.      Fixed the handling of the filesystem parameter in dump. A
 372         '/mnt/disk' parameter caused the disk contents to be dumped,
 373         but a '/mnt/disk/' parameter caused the mountpoint directory
 374         to be dumped (generally an empty directory).
 375
 376 3.      Improved the output of dump in order to tell which directory
 377         it is currently dumping (when dumping a subtree).
 378
 379 4.      Added the '-e' exclude inode option to dump. Thanks to
 380         Isaac Chuang <ike@isl.stanford.edu> for contributing with the patch.
 381
 382 5.      Added a REPORTING-BUGS file in order to provide a guide
 383         on how to correctly report a bug in dump/restore.
 384
 385 6.      Fixed a restore problem when restoring a hard link to an inode
 386         having the immutable or append-only attribute set. Thanks to
 387         Ambrose Li <acli@mingpaoxpress.com> for submitting the patch.
 388
 389 7.      Fixed a compatibility problem between dumps made on little
 390         endian machines (the format was correct) and big endian
 391         machines (the format was incorrect). This fix break the
 392         compatibility with the older dumps made on big endian
 393         machines (sparc, m86k, ppc etc). For the first time in
 394         linux dump's history (I believe), the dumps made by *BSD,
 395         Linux/alpha, Linux/sparc and Linux/x86 are compatible,
 396         so interchangeable. Thanks to Rob Cermak
 397         <cermak@ahab.rutgers.edu> for submitting the bug and
 398         helping me test the fix.
 399
 400 8.      Fixed the way dump reports the remaining percent/time, if
 401         the number of blocks actually dumped exceeds the estimated
 402         number of blocks. Thanks to Jean-Paul van der Jagt
 403         <jeanpaul@dutepp0.et.tudelft.nl> for reporting the bug.
 404
 405 Changes between versions 0.4b12 and 0.4b13 (released January 21, 2000)
 406 ======================================================================
 407
 408 1.      Small Y2K fix in the man pages :). Thanks to Bernhard Sadlowski
 409         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug.
 410
 411 2.      Removed the requirement to build the RPM as root from the
 412         spec file. Thanks to Christian Weisgerber
 413         <naddy@mips.rhein-neckar.de> for submitting this.
 414
 415 3.      Fixed a bug in dump related to the 'filetype' feature of ext2fs,
 416         causing dump to block when dumping really huge filesystems.
 417         Many thanks to Patrik Schindler <poc@pocnet.net> for
 418         helping me find this bug.
 419
 420 4.      Fixed the treatment for an interrupt signal when dump access
 421         the remote tape through RSH. Thanks to Christian Weisgerber
 422         <naddy@mips.rhein-neckar.de> for providing the patch.
 423
 424 5.      Fixed a bug which was causing dump/restore to display
 425         garbage characters instead of the remote host name.
 426
 427 Changes between versions 0.4b11 and 0.4b12 (released January 8, 2000)
 428 =====================================================================
 429
 430 1.      Small fix in the dump man page. Thanks to Thorsten Kukuk
 431         <kukuk@suse.de> for submitting the patch.
 432
 433 2.      Fix for the exit code when using the size estimate option of
 434         dump. Thanks to Matti Taskinen <mkt@rni.helsinki.fi> for
 435         submitting the patch.
 436
 437 3.      Handle EINTR in atomical reads/writes in dump, which was causing
 438         dump to fail on some systems. Thanks to Eric Jergensen
 439         <eric@dvns.com> for reporting the bug and submitting the patch.
 440
 441 4.      Handle more than 16 characters for the device names in dumpdates.
 442         (up to 255 now). Thanks to Rainer Clasen <bj@ncc.cicely.de> for
 443         tracking down the problem and proposing the solution.
 444
 445 5.      Fixed a bug in dump which prevented the creation of the
 446         dumpdates file when doing a 0-level dump without already
 447         having a dumpdates file. Thanks to Patrik Schindler
 448         <poc@pocnet.net> for reporting the bug.
 449
 450 6.      Changed the way dump 'S' flag reports the size estimate
 451         from number of blocks into bytes (making it compatible
 452         with the Solaris version, and simplifying things for
 453         amanda users). Thanks to Jason L Tibbitts III
 454         <tibbs@math.uh.edu> for reporting the bug.
 455
 456 7.      Fixed a compatibility problem in linux/alpha dump tape format.
 457         Now the linux/alpha dump are (again) compatible with the
 458         other dump formats. But this breaks compatibility with
 459         older dumps made on alpha. Thanks to Mike Tibor
 460         <tibor@lib.uaa.alaska.edu> for helping me in finding this bug.
 461
 462 Changes between versions 0.4b10 and 0.4b11 (released December 5, 1999)
 463 ======================================================================
 464
 465 1.      Added a '--enable-kerberos' to configure.
 466
 467 2.      Added a 'S' option to dump which determines the amount of space
 468         that is needed to perform the dump without actually doing it, similar
 469         to the Sun's ufsdump 'S' option. Patch contributed by Rob Cermak
 470         <cermak@ahab.rutgers.edu>.
 471
 472 3.      Added a 'M' multi-volume option to dump and restore which enables
 473         dumping to multiple files (useful when dumping to an ext2
 474         partition to make several dump files in order to bypass the 2GB
 475         file size limitation). The 'f' argument is treated as a prefix and
 476         the output files will be named <prefix>001, <prefix>002 etc. With
 477         the 'M' flag, restore automatically selects the right file without
 478         asking to enter a new tape each time.
 479
 480 4.      Fixed a memory leak which was causing dump to grow very big
 481         (270MB when dumping a 10GB filesystem...). Thanks to Jason
 482         Fearon <jasonf@netrider.org.au> for reporting the bug.
 483
 484 Changes between versions 0.4b9 and 0.4b10 (released November 21, 1999)
 485 ======================================================================
 486
 487 1.      Make configure test if the system glob routines support
 488         extended syntax (ALTDIRFUNC). If not, use the internal glob
 489         routines instead of system ones. Thanks to Bernhard Sadlowski
 490         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug
 491         and helping me resolve this and other minor libc5 compiling
 492         glitches.
 493
 494 2.      Fix a problem when dumping a ext2fs with the 'filetype'
 495         feature enabled. Thanks to Patrick J. LoPresti
 496         <patl@cag.lcs.mit.edu> for reporting the bug and to
 497         Theodore Y. Ts'o <tytso@mit.edu> for providing the patch.
 498
 499 3.      Made the nodump flag work on directories. A directory which
 500         has the nodump flag gets never dumped, regardless of its
 501         contents.
 502
 503 4.      Integrate a patch from Jeremy Fitzhardinge <jeremy@goop.org>
 504         which allows dump on an active ext3 filesystem. However, this
 505         is a "quick and dirty" patch which enables backup of an ext3
 506         filesystem through the ext2 compatibility (by ignoring the
 507         NEEDS_RECOVERY bit). The journal file is not recognized and
 508         it is dumped (it should not).
 509
 510 5.      Test the superblock compatibility flags when dumping, in order
 511         to be sure that we know how to deal with specific features.
 512
 513 Changes between versions 0.4b8 and 0.4b9 (released November 5, 1999)
 514 ====================================================================
 515
 516 1.      Use lchown instead of chown, fixing a possible security problem
 517         when restoring symlinks (a malicious user could use this
 518         to deliberately corrupt the ownership of important system files).
 519         Thanks to Chris Siebenmann <cks@utcc.utoronto.ca> for detecting
 520         this and providing the patch.
 521
 522 Changes between versions 0.4b7 and 0.4b8 (released November 3, 1999)
 523 ====================================================================
 524
 525 1.      Put dump sources under CVS, added Id tags in all files so
 526         one can use 'ident' on binary files.
 527
 528 2.      Added the dump/restore version in the usage text so one can
 529         easily verify the version he is using.
 530
 531 3.      Small patch from Nuno Oliveira <nuno@eq.uc.pt> which fixes
 532         a va_start/va_end problem on linux-ppc (always call va_start
 533         va_end in pairs each time we use a vararg function).
 534
 535 4.      Added again the DT_* constants because old libc does not
 536         contain them :(. Thanks to Eric Maisonobe <virnet@nat.fr>
 537         for submitting the bug report.
 538
 539 5.      Use ext2fs_llseek instead of llseek. With recent e2fsprogs
 540         this should enable dumping big (huge) filesystems.
 541
 542 6.      Added the RSH environment variable in order to be able to
 543         use a rsh replacement like ssh when doing remote backups (and
 544         bypass the security limitations of rcmd). Now you can do remote
 545         backups without being root (or making dump setuid root).
 546
 547 7.      Modified again the way dumpdates works. For incremental dumps,
 548         we need to read dumpdates even if we are not using 'u' option.
 549         Thanks to Bdale Garbee <bdale@gag.com> for his ideas on how
 550         this should work.
 551
 552 Changes between versions 0.4b6 and 0.4b7 (released October 8, 1999)
 553 ===================================================================
 554
 555 1.      Removed the 'k' flag from the restore 'about' text if kerberos
 556         was not compiled in.
 557
 558 2.      Prototyped (f)setflags from e2fsprogs and corrected the calls
 559         to them (fsetflags takes a char*, setflags an open fd!).
 560
 561 3.      (f)setflags is called only if the flags aren't empty. If the
 562         file is a special file, a warning is printed, because changing
 563         flags implies opening the device. Normally, a special file
 564         should not have any flag... (Debian bug #29775, patch provided
 565         by Abhijit Dasgupta <abhijit@ans.net>).
 566
 567 4.      Made possible to dump a file system not mentioned in /etc/fstab.
 568         (Debian bug #11904, patch provided by Eirik Fuller <eirik@netcom.com>).
 569
 570 5.      Changed the default behaviour to not create dumpdates
 571         unless 'u' option is specified. Removed the old "debian-patch"
 572         which provided the same thing. (Debian bug #38136, #33818).
 573
 574 6.      Removed all those dump*announce, since they were getting old...
 575
 576 7.      Added warning messages if dumpdates does not exist and
 577         when an inferior level dump does not exist (except for a level 0
 578         dump).
 579
 580 8.      Debugged the glob calls in interactive mode: restore used a
 581         dirent struct which was different from the /usr/include/dirent.h
 582         one (this used to work, is it a glibc2 change?), so none of the
 583         compat glob (which used /usr/include/dirent.h) or the system glob
 584         worked. Restore use now the system dirent (and the system
 585         DT_* constants), which are compatible with BSD ones.
 586
 587 9.      Added a configure flag (--with-dumpdatespath) to specify
 588         the location of dumpdates file. By default, it is
 589         /etc/dumpdates.
 590
 591 10.     Added the "AUTHOR" and "AVAILABILITY" sections and
 592         included the current date/version in man pages.
 593
 594 11.     Corrected the estimation of remaining time when
 595         the operator doesn't change the tapes quickly enough. This
 596         was an old bug, I thought I corrected it, and discovered
 597         that in fact it was corrected in two different places, so
 598         the results canceled each other...
 599
 600 Changes between versions 0.4b5 and 0.4b6 (released October 1, 1999)
 601 ===================================================================
 602
 603 1.      Integrated multiple patches from RedHat, Debian and SuSE:
 604
 605         - tweak dump/itime.c to not try to read dumpdates if the 'u' option
 606           isn't specified.
 607         - several fixes in the man pages.
 608         - update the default tape device to /dev/st0.
 609         - many updates for Linux Alpha (byte ordering, size_t etc).
 610         - buffer overruns.
 611         - use environment variable for TMPDIR (instead of /tmp).
 612         - use sigjmp_buf instead of jmp_buf (RedHat bug #3260).
 613         - workaround egcs bug (RedHat bugs #4281 and #2989).
 614         - wire $(OPT) throughout Makefile's.
 615
 616 2.      Upgrade the dump revision to 1, making possible to dump filesystems
 617         made with e2fsprogs-1.15 or newer. Nothing seems to break...
 618
 619 3.      Fix some compile warnings, prototype all functions.
 620
 621 4.      Use glibc err/glob instead of internal compatibility
 622         routines (only if available).
 623
 624 5.      Fix a compile error on Linux 2.2.7 / libc5 (5.4.44) (patch provided
 625         by Bernhard Sadlowski <sadlowsk@mathematik.uni-bielefeld.de>).
 626
 627 Changes between versions 0.4b4 and 0.4b5 (released September 22, 1999)
 628 ======================================================================
 629
 630 1.      Integrated the changes from FreeBSD-3.1-RELEASE
 631         (mostly bug fixes, buffer overruns, dump has now an "automatic
 632         tape length calculation" flag, dump/restore can use kerberos now
 633         (this is NOT tested), use environment variables for TAPE and
 634         RMT etc.).
 635
 636 2.      Integrated three RedHat patches ("glibc", "kernel" and "bread" patches)
 637
 638 3.      Corrected a bug in restore when using 'C' option with multi-volumes
 639         tapes (files splited accros two tapes give "size changed" errors
 640         when comparing).
 641
 642 4.      Corrected the long standing bug when dumping multiple tapes.
 643         This works for me, needs further testing.
 644
 645 Changes between versions 0.4b3 and 0.4b4 (released January 17, 1997)
 646 ====================================================================
 647
 648 1.      Dump now runs correctly on kernels 2.1.x
 649         Fix made by Gerald Peters <gapeters@worldnet.att.net>
 650
 651 Changes between versions 0.4b2 and 0.4b3
 652 ========================================
 653
 654 1.      Use realpath() if available
 655
 656 2.      Report statistics
 657
 658 Changes between versions 0.4b1 and 0.4b2
 659 ========================================
 660
 661 1.      Fixed the bug fix from Greg Lutz (I had made a mistake when integrating
 662         the patch)
 663
 664 2.      Fixed restore to make it able to read FreeBSD 2.x dumps again
 665
 666 3.      Fixed configure.in to correctly handle --enable-rmt
 667
 668 Changes between versions 0.3 and 0.4b1
 669 ======================================
 670
 671 1.      Integrated the changes from 4.4BSD-Lite2
 672
 673 2.      Integrated the patches from Debian and Red Hat
 674
 675 3.      Portability changes: use the __u32, __u16, __s32, and __s16 types
 676
 677 4.      Changed dump to use the Ext2fs library to get block addresses.  This
 678         should solve the endianness problem on SparcLinux.
 679
 680 5.      Created a configure.in file (shamelessly stolen from the e2fsprogs
 681         distribution's one) to use autoconf
 682
 683 6.      Fixed a few minor bugs
 684
 685 Changes between versions 0.2e and 0.2f
 686 ======================================
 687
 688 1.      Added the creation of named pipes (fifos) in restore.
 689
 690 2.      Added the -N flag in the restore manual page.
 691
 692 3.      Added the file kernel.patch which contains the llseek() optimization
 693         patch for 1.2.x kernels.
 694
 695 4.      Fixed a bug in the restoration of symbolic links: owner and group were
 696         not restored.
 697
 698 5.      Integrated some changes from FreeBSD 2.2.
 699
 700 6.      Added a call to ftruncate() after restoring each file to restore
 701         correctly files ending by a hole.
 702
 703 Changes between versions 0.2d and 0.2e
 704 ======================================
 705
 706 1.      Fixed a bug in the "set owner/mode" process.  Every file was restored
 707         with owner = root (0) and group = root/wheel/whatever (0).
 708
 709 Changes between versions 0.2c and 0.2d
 710 ======================================
 711
 712 1.      Dump is now able to backup 2GB+ filesystems.
 713
 714 2.      Dump and restore can now be linked as static binaries.
 715
 716 Changes between versions 0.2b and 0.2c
 717 ======================================
 718
 719 1.      Fixed a bug when dumping ``slow'' (i.e. normal) symbolic links.
 720
 721 Changes between versions 0.2a and 0.2b
 722 ======================================
 723
 724 1.      Really fixed the bug that I should have corrected in 0.2a.
 725
 726 2.      Enabled optimization again.
 727
 728 Changes between versions 0.2 and 0.2a
 729 =====================================
 730
 731 1.      Disabled the optimization during compilation.
 732
 733 Changes between versions 0.1 and 0.2
 734 ====================================
 735
 736 1.      Fixed a bug in fstab.c which caused a null pointer to be stored in
 737         the fs_type field (actually, I modified the file fstab.c to make it
 738         use the mntent functions).
 739
 740 2.      Dump and restore now use a 4.3 BSD compatible dump format.  Backups
 741         made by dump should be readable by the BSD restore and backups made
 742         by the BSD dump should be readable by restore.  Unfortunately, this
 743         means that the dump format has changed between version 0.1 and version
 744         0.2 :-(
 745
 746 3.      Dump is now able to backup a subtree, it is no longer limited to whole
 747         filesystems like the BSD version.
 748
 749 4.      Dump now uses ext2_llseek() so it is able to backup filesystems bigger
 750         than 2 GB.
 751
 752 Changes between versions 0.0 and 0.1
 753 ====================================
 754
 755 1.      Now create links rdump and rrestore during the `make install' step.
 756
 757 2.      Linux port specific bugs added to the manual pages
 758
 759 3.      Incorrect estimation of the number of tapes blocks fixed when doing
 760         incremental backups.
 761
 762 4.      Better ls-like format in restore in interactive mode.