CHANGES

   1 $Id: CHANGES,v 1.61 2000/06/01 18:51:22 stelian Exp $
   2
   3 Changes between versions 0.4b16 and 0.4b17 (released ??????????????)
   4 ====================================================================
   5
   6 1.      The -F script is called now *only* at the end of a tape,
   7         not at the end of the dump. Thanks to Christian Haul
   8         <haul@informatik.tu-darmstadt.de> for the bug report.
   9
  10         Normally, the device name and the current volume number
  11         are passed on the command line of the script. However,
  12         if you want the old style script (with no arguments
  13         passed on the command line), you can enable it in
  14         configure with the --enable-oldstylefscript.
  15
  16 2.      Use posix signal handling to preserve dump functionality
  17         with libc5. Thanks to Jeff Johnson <jbj@redhat.com> for
  18         the patch.
  19
  20 3.      Made the exit code of restore in case of a 'C'ompare
  21         command reflect the result of the compare. An exit status
  22         of 0 means the dump archive is correct, 1 means tape errors,
  23         2 means that some files were modified. Thanks to Kenneth Porter
  24         <shiva@well.com> for the suggestion.
  25
  26 4.      Made (finally) quotes work in interactive restore.
  27
  28 5.      Small fixes in order to allow dump to compile with a
  29         really old e2fsprogs version. Thanks to Ian Zimmerman
  30         <itz@speakeasy.org> for the bug report.
  31
  32 6.      Add GNU readline capabilities to interactive restore.
  33         Use configure's --enable-readline flag to enable this feature.
  34         Thanks to Patrik Schindler <poc@pocnet.net> for the
  35         suggestion.
  36
  37 7.      Do the compare on the fly in restore 'C' mode (this will
  38         allow not to exhaust the available /tmp space when
  39         ccmparing large files). Thanks to Kenneth Porter
  40         <shiva@well.com> for the suggestion.
  41
  42 Changes between versions 0.4b15 and 0.4b16 (released March 11, 2000)
  43 ====================================================================
  44
  45 1.      Fixed some several duplicate 'DUMP: DUMP:' in the
  46         output of dump.
  47
  48 2.      Corrected the estimation of blocks to dump. Note that
  49         this is still wrong for large directory inodes, due
  50         to the size of a BSD directory entry on the tape
  51         (estimation is based on the size of the ext2 directory,
  52         which is smaller because it doesn't contain the null
  53         character at the end).
  54
  55 3.      Made dump report the total number of MB written to
  56         tape at the end of run. Thanks to W. Reilly Cooley
  57         <wcooley@nakedape.cc> for the patch.
  58
  59 4.      Added the -X option to restore giving the possibility
  60         to read the names of the files to be extracted/listed
  61         from a text file (in addition of the command line).
  62         Thanks to Dejan Muhamedagic <dejan@quant-x.com> for the
  63         patch.
  64
  65 5.      Added the device name and the current volume number
  66         as arguments to the end of tape script (dump -F option).
  67
  68 6.      Made the multi-volume dump work again (after having
  69         broken it in 0.4b15).
  70
  71 Changes between versions 0.4b14 and 0.4b15 (released March 2, 2000)
  72 ===================================================================
  73
  74 1.      Added a prompt command in interactive restore mode. Thanks
  75         to Andreas Dilger <adilger@home.com> for the patch.
  76
  77 2.      Fixed a buffer overflow problem in dump (caused by
  78         not checking the size of the filesystem parameter).
  79         Thanks to Kim Yong-jun <loveyou@hackerslab.org> for
  80         reporting this on Bugtraq (and to several dump users
  81         who forwarded me his mail).
  82
  83 3.      Added the '-F script' option to dump in order to
  84         launch a script at the end of each tape (to be used
  85         with a tape changer, or to notify the sysadmin by
  86         pager etc.).
  87
  88 4.      Fixed a bug in restore compare code caused by the changes
  89         I made in 0.4b14.
  90
  91 5.      Fixed the treatment of options using the old BSD syntax
  92         in both dump and restore.
  93
  94 Changes between versions 0.4b13 and 0.4b14 (released February 10, 2000)
  95 =======================================================================
  96
  97 1.      Fixed a bug in dump which may have caused invalid deleted
  98         directories to be dumped out if they were deleted after the
  99         mapping pass. This could occure on active filesystem and lead
 100         to heap corruption (causing dump malfunction in many possible ways).
 101         Thanks to Jan Sanislo <oystr@cs.washington.edu> for finding this
 102         bug and submitting the patch.
 103
 104 2.      Fixed the handling of the filesystem parameter in dump. A
 105         '/mnt/disk' parameter caused the disk contents to be dumped,
 106         but a '/mnt/disk/' parameter caused the mountpoint directory
 107         to be dumped (generally an empty directory).
 108
 109 3.      Improved the output of dump in order to tell which directory
 110         it is currently dumping (when dumping a subtree).
 111
 112 4.      Added the '-e' exclude inode option to dump. Thanks to
 113         Isaac Chuang <ike@isl.stanford.edu> for contributing with the patch.
 114
 115 5.      Added a REPORTING-BUGS file in order to provide a guide
 116         on how to correctly report a bug in dump/restore.
 117
 118 6.      Fixed a restore problem when restoring a hard link to an inode
 119         having the immutable or append-only attribute set. Thanks to
 120         Ambrose Li <acli@mingpaoxpress.com> for submitting the patch.
 121
 122 7.      Fixed a compatibility problem between dumps made on little
 123         endian machines (the format was correct) and big endian
 124         machines (the format was incorrect). This fix break the
 125         compatibility with the older dumps made on big endian
 126         machines (sparc, m86k, ppc etc). For the first time in
 127         linux dump's history (I believe), the dumps made by *BSD,
 128         Linux/alpha, Linux/sparc and Linux/x86 are compatible,
 129         so interchangeable. Thanks to Rob Cermak
 130         <cermak@ahab.rutgers.edu> for submitting the bug and
 131         helping me test the fix.
 132
 133 8.      Fixed the way dump reports the remaining percent/time, if
 134         the number of blocks actually dumped exceeds the estimated
 135         number of blocks. Thanks to Jean-Paul van der Jagt
 136         <jeanpaul@dutepp0.et.tudelft.nl> for reporting the bug.
 137
 138 Changes between versions 0.4b12 and 0.4b13 (released January 21, 2000)
 139 ======================================================================
 140
 141 1.      Small Y2K fix in the man pages :). Thanks to Bernhard Sadlowski
 142         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug.
 143
 144 2.      Removed the requirement to build the RPM as root from the
 145         spec file. Thanks to Christian Weisgerber
 146         <naddy@mips.rhein-neckar.de> for submitting this.
 147
 148 3.      Fixed a bug in dump related to the 'filetype' feature of ext2fs,
 149         causing dump to block when dumping really huge filesystems.
 150         Many thanks to Patrik Schindler <poc@pocnet.net> for
 151         helping me find this bug.
 152
 153 4.      Fixed the treatment for an interrupt signal when dump access
 154         the remote tape through RSH. Thanks to Christian Weisgerber
 155         <naddy@mips.rhein-neckar.de> for providing the patch.
 156
 157 5.      Fixed a bug which was causing dump/restore to display
 158         garbage characters instead of the remote host name.
 159
 160 Changes between versions 0.4b11 and 0.4b12 (released January 8, 2000)
 161 =====================================================================
 162
 163 1.      Small fix in the dump man page. Thanks to Thorsten Kukuk
 164         <kukuk@suse.de> for submitting the patch.
 165
 166 2.      Fix for the exit code when using the size estimate option of
 167         dump. Thanks to Matti Taskinen <mkt@rni.helsinki.fi> for
 168         submitting the patch.
 169
 170 3.      Handle EINTR in atomical reads/writes in dump, which was causing
 171         dump to fail on some systems. Thanks to Eric Jergensen
 172         <eric@dvns.com> for reporting the bug and submitting the patch.
 173
 174 4.      Handle more than 16 characters for the device names in dumpdates.
 175         (up to 255 now). Thanks to Rainer Clasen <bj@ncc.cicely.de> for
 176         tracking down the problem and proposing the solution.
 177
 178 5.      Fixed a bug in dump which prevented the creation of the
 179         dumpdates file when doing a 0-level dump without already
 180         having a dumpdates file. Thanks to Patrik Schindler
 181         <poc@pocnet.net> for reporting the bug.
 182
 183 6.      Changed the way dump 'S' flag reports the size estimate
 184         from number of blocks into bytes (making it compatible
 185         with the Solaris version, and simplifying things for
 186         amanda users). Thanks to Jason L Tibbitts III
 187         <tibbs@math.uh.edu> for reporting the bug.
 188
 189 7.      Fixed a compatibility problem in linux/alpha dump tape format.
 190         Now the linux/alpha dump are (again) compatible with the
 191         other dump formats. But this breaks compatibility with
 192         older dumps made on alpha. Thanks to Mike Tibor
 193         <tibor@lib.uaa.alaska.edu> for helping me in finding this bug.
 194
 195 Changes between versions 0.4b10 and 0.4b11 (released December 5, 1999)
 196 ======================================================================
 197
 198 1.      Added a '--enable-kerberos' to configure.
 199
 200 2.      Added a 'S' option to dump which determines the amount of space
 201         that is needed to perform the dump without actually doing it, similar
 202         to the Sun's ufsdump 'S' option. Patch contributed by Rob Cermak
 203         <cermak@ahab.rutgers.edu>.
 204
 205 3.      Added a 'M' multi-volume option to dump and restore which enables
 206         dumping to multiple files (useful when dumping to an ext2
 207         partition to make several dump files in order to bypass the 2GB
 208         file size limitation). The 'f' argument is treated as a prefix and
 209         the output files will be named <prefix>001, <prefix>002 etc. With
 210         the 'M' flag, restore automatically selects the right file without
 211         asking to enter a new tape each time.
 212
 213 4.      Fixed a memory leak which was causing dump to grow very big
 214         (270MB when dumping a 10GB filesystem...). Thanks to Jason
 215         Fearon <jasonf@netrider.org.au> for reporting the bug.
 216
 217 Changes between versions 0.4b9 and 0.4b10 (released November 21, 1999)
 218 ======================================================================
 219
 220 1.      Make configure test if the system glob routines support
 221         extended syntax (ALTDIRFUNC). If not, use the internal glob
 222         routines instead of system ones. Thanks to Bernhard Sadlowski
 223         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug
 224         and helping me resolve this and other minor libc5 compiling
 225         glitches.
 226
 227 2.      Fix a problem when dumping a ext2fs with the 'filetype'
 228         feature enabled. Thanks to Patrick J. LoPresti
 229         <patl@cag.lcs.mit.edu> for reporting the bug and to
 230         Theodore Y. Ts'o <tytso@mit.edu> for providing the patch.
 231
 232 3.      Made the nodump flag work on directories. A directory which
 233         has the nodump flag gets never dumped, regardless of its
 234         contents.
 235
 236 4.      Integrate a patch from Jeremy Fitzhardinge <jeremy@goop.org>
 237         which allows dump on an active ext3 filesystem. However, this
 238         is a "quick and dirty" patch which enables backup of an ext3
 239         filesystem through the ext2 compatibility (by ignoring the
 240         NEEDS_RECOVERY bit). The journal file is not recognized and
 241         it is dumped (it should not).
 242
 243 5.      Test the superblock compatibility flags when dumping, in order
 244         to be sure that we know how to deal with specific features.
 245
 246 Changes between versions 0.4b8 and 0.4b9 (released November 5, 1999)
 247 ====================================================================
 248
 249 1.      Use lchown instead of chown, fixing a possible security problem
 250         when restoring symlinks (a malicious user could use this
 251         to deliberately corrupt the ownership of important system files).
 252         Thanks to Chris Siebenmann <cks@utcc.utoronto.ca> for detecting
 253         this and providing the patch.
 254
 255 Changes between versions 0.4b7 and 0.4b8 (released November 3, 1999)
 256 ====================================================================
 257
 258 1.      Put dump sources under CVS, added Id tags in all files so
 259         one can use 'ident' on binary files.
 260
 261 2.      Added the dump/restore version in the usage text so one can
 262         easily verify the version he is using.
 263
 264 3.      Small patch from Nuno Oliveira <nuno@eq.uc.pt> which fixes
 265         a va_start/va_end problem on linux-ppc (always call va_start
 266         va_end in pairs each time we use a vararg function).
 267
 268 4.      Added again the DT_* constants because old libc does not
 269         contain them :(. Thanks to Eric Maisonobe <virnet@nat.fr>
 270         for submitting the bug report.
 271
 272 5.      Use ext2fs_llseek instead of llseek. With recent e2fsprogs
 273         this should enable dumping big (huge) filesystems.
 274
 275 6.      Added the RSH environment variable in order to be able to
 276         use a rsh replacement like ssh when doing remote backups (and
 277         bypass the security limitations of rcmd). Now you can do remote
 278         backups without being root (or making dump setuid root).
 279
 280 7.      Modified again the way dumpdates works. For incremental dumps,
 281         we need to read dumpdates even if we are not using 'u' option.
 282         Thanks to Bdale Garbee <bdale@gag.com> for his ideas on how
 283         this should work.
 284
 285 Changes between versions 0.4b6 and 0.4b7 (released October 8, 1999)
 286 ===================================================================
 287
 288 1.      Removed the 'k' flag from the restore 'about' text if kerberos
 289         was not compiled in.
 290
 291 2.      Prototyped (f)setflags from e2fsprogs and corrected the calls
 292         to them (fsetflags takes a char*, setflags an open fd!).
 293
 294 3.      (f)setflags is called only if the flags aren't empty. If the
 295         file is a special file, a warning is printed, because changing
 296         flags implies opening the device. Normally, a special file
 297         should not have any flag... (Debian bug #29775, patch provided
 298         by Abhijit Dasgupta <abhijit@ans.net>).
 299
 300 4.      Made possible to dump a file system not mentioned in /etc/fstab.
 301         (Debian bug #11904, patch provided by Eirik Fuller <eirik@netcom.com>).
 302
 303 5.      Changed the default behaviour to not create dumpdates
 304         unless 'u' option is specified. Removed the old "debian-patch"
 305         which provided the same thing. (Debian bug #38136, #33818).
 306
 307 6.      Removed all those dump*announce, since they were getting old...
 308
 309 7.      Added warning messages if dumpdates does not exist and
 310         when an inferior level dump does not exist (except for a level 0
 311         dump).
 312
 313 8.      Debugged the glob calls in interactive mode: restore used a
 314         dirent struct which was different from the /usr/include/dirent.h
 315         one (this used to work, is it a glibc2 change?), so none of the
 316         compat glob (which used /usr/include/dirent.h) or the system glob
 317         worked. Restore use now the system dirent (and the system
 318         DT_* constants), which are compatible with BSD ones.
 319
 320 9.      Added a configure flag (--with-dumpdatespath) to specify
 321         the location of dumpdates file. By default, it is
 322         /etc/dumpdates.
 323
 324 10.     Added the "AUTHOR" and "AVAILABILITY" sections and
 325         included the current date/version in man pages.
 326
 327 11.     Corrected the estimation of remaining time when
 328         the operator doesn't change the tapes quickly enough. This
 329         was an old bug, I thought I corrected it, and discovered
 330         that in fact it was corrected in two different places, so
 331         the results canceled each other...
 332
 333 Changes between versions 0.4b5 and 0.4b6 (released October 1, 1999)
 334 ===================================================================
 335
 336 1.      Integrated multiple patches from RedHat, Debian and SuSE:
 337
 338         - tweak dump/itime.c to not try to read dumpdates if the 'u' option
 339           isn't specified.
 340         - several fixes in the man pages.
 341         - update the default tape device to /dev/st0.
 342         - many updates for Linux Alpha (byte ordering, size_t etc).
 343         - buffer overruns.
 344         - use environment variable for TMPDIR (instead of /tmp).
 345         - use sigjmp_buf instead of jmp_buf (RedHat bug #3260).
 346         - workaround egcs bug (RedHat bugs #4281 and #2989).
 347         - wire $(OPT) throughout Makefile's.
 348
 349 2.      Upgrade the dump revision to 1, making possible to dump filesystems
 350         made with e2fsprogs-1.15 or newer. Nothing seems to break...
 351
 352 3.      Fix some compile warnings, prototype all functions.
 353
 354 4.      Use glibc err/glob instead of internal compatibility
 355         routines (only if available).
 356
 357 5.      Fix a compile error on Linux 2.2.7 / libc5 (5.4.44) (patch provided
 358         by Bernhard Sadlowski <sadlowsk@mathematik.uni-bielefeld.de>).
 359
 360 Changes between versions 0.4b4 and 0.4b5 (released September 22, 1999)
 361 ======================================================================
 362
 363 1.      Integrated the changes from FreeBSD-3.1-RELEASE
 364         (mostly bug fixes, buffer overruns, dump has now an "automatic
 365         tape length calculation" flag, dump/restore can use kerberos now
 366         (this is NOT tested), use environment variables for TAPE and
 367         RMT etc.).
 368
 369 2.      Integrated three RedHat patches ("glibc", "kernel" and "bread" patches)
 370
 371 3.      Corrected a bug in restore when using 'C' option with multi-volumes
 372         tapes (files splited accros two tapes give "size changed" errors
 373         when comparing).
 374
 375 4.      Corrected the long standing bug when dumping multiple tapes.
 376         This works for me, needs further testing.
 377
 378 Changes between versions 0.4b3 and 0.4b4 (released January 17, 1997)
 379 ====================================================================
 380
 381 1.      Dump now runs correctly on kernels 2.1.x
 382         Fix made by Gerald Peters <gapeters@worldnet.att.net>
 383
 384 Changes between versions 0.4b2 and 0.4b3
 385 ========================================
 386
 387 1.      Use realpath() if available
 388
 389 2.      Report statistics
 390
 391 Changes between versions 0.4b1 and 0.4b2
 392 ========================================
 393
 394 1.      Fixed the bug fix from Greg Lutz (I had made a mistake when integrating
 395         the patch)
 396
 397 2.      Fixed restore to make it able to read FreeBSD 2.x dumps again
 398
 399 3.      Fixed configure.in to correctly handle --enable-rmt
 400
 401 Changes between versions 0.3 and 0.4b1
 402 ======================================
 403
 404 1.      Integrated the changes from 4.4BSD-Lite2
 405
 406 2.      Integrated the patches from Debian and Red Hat
 407
 408 3.      Portability changes: use the __u32, __u16, __s32, and __s16 types
 409
 410 4.      Changed dump to use the Ext2fs library to get block addresses.  This
 411         should solve the endianness problem on SparcLinux.
 412
 413 5.      Created a configure.in file (shamelessly stolen from the e2fsprogs
 414         distribution's one) to use autoconf
 415
 416 6.      Fixed a few minor bugs
 417
 418 Changes between versions 0.2e and 0.2f
 419 ======================================
 420
 421 1.      Added the creation of named pipes (fifos) in restore.
 422
 423 2.      Added the -N flag in the restore manual page.
 424
 425 3.      Added the file kernel.patch which contains the llseek() optimization
 426         patch for 1.2.x kernels.
 427
 428 4.      Fixed a bug in the restoration of symbolic links: owner and group were
 429         not restored.
 430
 431 5.      Integrated some changes from FreeBSD 2.2.
 432
 433 6.      Added a call to ftruncate() after restoring each file to restore
 434         correctly files ending by a hole.
 435
 436 Changes between versions 0.2d and 0.2e
 437 ======================================
 438
 439 1.      Fixed a bug in the "set owner/mode" process.  Every file was restored
 440         with owner = root (0) and group = root/wheel/whatever (0).
 441
 442 Changes between versions 0.2c and 0.2d
 443 ======================================
 444
 445 1.      Dump is now able to backup 2GB+ filesystems.
 446
 447 2.      Dump and restore can now be linked as static binaries.
 448
 449 Changes between versions 0.2b and 0.2c
 450 ======================================
 451
 452 1.      Fixed a bug when dumping ``slow'' (i.e. normal) symbolic links.
 453
 454 Changes between versions 0.2a and 0.2b
 455 ======================================
 456
 457 1.      Really fixed the bug that I should have corrected in 0.2a.
 458
 459 2.      Enabled optimization again.
 460
 461 Changes between versions 0.2 and 0.2a
 462 =====================================
 463
 464 1.      Disabled the optimization during compilation.
 465
 466 Changes between versions 0.1 and 0.2
 467 ====================================
 468
 469 1.      Fixed a bug in fstab.c which caused a null pointer to be stored in
 470         the fs_type field (actually, I modified the file fstab.c to make it
 471         use the mntent functions).
 472
 473 2.      Dump and restore now use a 4.3 BSD compatible dump format.  Backups
 474         made by dump should be readable by the BSD restore and backups made
 475         by the BSD dump should be readable by restore.  Unfortunately, this
 476         means that the dump format has changed between version 0.1 and version
 477         0.2 :-(
 478
 479 3.      Dump is now able to backup a subtree, it is no longer limited to whole
 480         filesystems like the BSD version.
 481
 482 4.      Dump now uses ext2_llseek() so it is able to backup filesystems bigger
 483         than 2 GB.
 484
 485 Changes between versions 0.0 and 0.1
 486 ====================================
 487
 488 1.      Now create links rdump and rrestore during the `make install' step.
 489
 490 2.      Linux port specific bugs added to the manual pages
 491
 492 3.      Incorrect estimation of the number of tapes blocks fixed when doing
 493         incremental backups.
 494
 495 4.      Better ls-like format in restore in interactive mode.