CHANGES

   1 $Id: CHANGES,v 1.59 2000/05/29 14:17:37 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 Chris
   8         <haul@informatik.tu-darmstadt.de> for the bug report.
   9
  10 2.      Use posix signal handling to preserve dump functionality
  11         with libc5. Thanks to Jeff Johnson <jbj@redhat.com> for
  12         the patch.
  13
  14 3.      Made the exit code of restore in case of a 'C'ompare
  15         command reflect the result of the compare. An exit status
  16         of 0 means the dump archive is correct, 1 means tape errors,
  17         2 means that some files were modified.
  18
  19 4.      Made quotes work in interactive restore.
  20
  21 5.      Small fixes in order to allow dump to compile with a
  22         really old e2fsprogs version.
  23
  24 6.      Add GNU readline capabilities to interactive restore.
  25         Use configure's --enable-readline flag to enable this feature.
  26
  27 Changes between versions 0.4b15 and 0.4b16 (released March 11, 2000)
  28 ====================================================================
  29
  30 1.      Fixed some several duplicate 'DUMP: DUMP:' in the
  31         output of dump.
  32
  33 2.      Corrected the estimation of blocks to dump. Note that
  34         this is still wrong for large directory inodes, due
  35         to the size of a BSD directory entry on the tape
  36         (estimation is based on the size of the ext2 directory,
  37         which is smaller because it doesn't contain the null
  38         character at the end).
  39
  40 3.      Made dump report the total number of MB written to
  41         tape at the end of run. Thanks to W. Reilly Cooley
  42         <wcooley@nakedape.cc> for the patch.
  43
  44 4.      Added the -X option to restore giving the possibility
  45         to read the names of the files to be extracted/listed
  46         from a text file (in addition of the command line).
  47         Thanks to Dejan Muhamedagic <dejan@quant-x.com> for the
  48         patch.
  49
  50 5.      Added the device name and the current volume number
  51         as arguments to the end of tape script (dump -F option).
  52
  53 6.      Made the multi-volume dump work again (after having
  54         broken it in 0.4b15).
  55
  56 Changes between versions 0.4b14 and 0.4b15 (released March 2, 2000)
  57 ===================================================================
  58
  59 1.      Added a prompt command in interactive restore mode. Thanks
  60         to Andreas Dilger <adilger@home.com> for the patch.
  61
  62 2.      Fixed a buffer overflow problem in dump (caused by
  63         not checking the size of the filesystem parameter).
  64         Thanks to Kim Yong-jun <loveyou@hackerslab.org> for
  65         reporting this on Bugtraq (and to several dump users
  66         who forwarded me his mail).
  67
  68 3.      Added the '-F script' option to dump in order to
  69         launch a script at the end of each tape (to be used
  70         with a tape changer, or to notify the sysadmin by
  71         pager etc.).
  72
  73 4.      Fixed a bug in restore compare code caused by the changes
  74         I made in 0.4b14.
  75
  76 5.      Fixed the treatment of options using the old BSD syntax
  77         in both dump and restore.
  78
  79 Changes between versions 0.4b13 and 0.4b14 (released February 10, 2000)
  80 =======================================================================
  81
  82 1.      Fixed a bug in dump which may have caused invalid deleted
  83         directories to be dumped out if they were deleted after the
  84         mapping pass. This could occure on active filesystem and lead
  85         to heap corruption (causing dump malfunction in many possible ways).
  86         Thanks to Jan Sanislo <oystr@cs.washington.edu> for finding this
  87         bug and submitting the patch.
  88
  89 2.      Fixed the handling of the filesystem parameter in dump. A
  90         '/mnt/disk' parameter caused the disk contents to be dumped,
  91         but a '/mnt/disk/' parameter caused the mountpoint directory
  92         to be dumped (generally an empty directory).
  93
  94 3.      Improved the output of dump in order to tell which directory
  95         it is currently dumping (when dumping a subtree).
  96
  97 4.      Added the '-e' exclude inode option to dump. Thanks to
  98         Isaac Chuang <ike@isl.stanford.edu> for contributing with the patch.
  99
 100 5.      Added a REPORTING-BUGS file in order to provide a guide
 101         on how to correctly report a bug in dump/restore.
 102
 103 6.      Fixed a restore problem when restoring a hard link to an inode
 104         having the immutable or append-only attribute set. Thanks to
 105         Ambrose Li <acli@mingpaoxpress.com> for submitting the patch.
 106
 107 7.      Fixed a compatibility problem between dumps made on little
 108         endian machines (the format was correct) and big endian
 109         machines (the format was incorrect). This fix break the
 110         compatibility with the older dumps made on big endian
 111         machines (sparc, m86k, ppc etc). For the first time in
 112         linux dump's history (I believe), the dumps made by *BSD,
 113         Linux/alpha, Linux/sparc and Linux/x86 are compatible,
 114         so interchangeable. Thanks to Rob Cermak
 115         <cermak@ahab.rutgers.edu> for submitting the bug and
 116         helping me test the fix.
 117
 118 8.      Fixed the way dump reports the remaining percent/time, if
 119         the number of blocks actually dumped exceeds the estimated
 120         number of blocks. Thanks to Jean-Paul van der Jagt
 121         <jeanpaul@dutepp0.et.tudelft.nl> for reporting the bug.
 122
 123 Changes between versions 0.4b12 and 0.4b13 (released January 21, 2000)
 124 ======================================================================
 125
 126 1.      Small Y2K fix in the man pages :). Thanks to Bernhard Sadlowski
 127         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug.
 128
 129 2.      Removed the requirement to build the RPM as root from the
 130         spec file. Thanks to Christian Weisgerber
 131         <naddy@mips.rhein-neckar.de> for submitting this.
 132
 133 3.      Fixed a bug in dump related to the 'filetype' feature of ext2fs,
 134         causing dump to block when dumping really huge filesystems.
 135         Many thanks to Patrik Schindler <poc@pocnet.net> for
 136         helping me find this bug.
 137
 138 4.      Fixed the treatment for an interrupt signal when dump access
 139         the remote tape through RSH. Thanks to Christian Weisgerber
 140         <naddy@mips.rhein-neckar.de> for providing the patch.
 141
 142 5.      Fixed a bug which was causing dump/restore to display
 143         garbage characters instead of the remote host name.
 144
 145 Changes between versions 0.4b11 and 0.4b12 (released January 8, 2000)
 146 =====================================================================
 147
 148 1.      Small fix in the dump man page. Thanks to Thorsten Kukuk
 149         <kukuk@suse.de> for submitting the patch.
 150
 151 2.      Fix for the exit code when using the size estimate option of
 152         dump. Thanks to Matti Taskinen <mkt@rni.helsinki.fi> for
 153         submitting the patch.
 154
 155 3.      Handle EINTR in atomical reads/writes in dump, which was causing
 156         dump to fail on some systems. Thanks to Eric Jergensen
 157         <eric@dvns.com> for reporting the bug and submitting the patch.
 158
 159 4.      Handle more than 16 characters for the device names in dumpdates.
 160         (up to 255 now). Thanks to Rainer Clasen <bj@ncc.cicely.de> for
 161         tracking down the problem and proposing the solution.
 162
 163 5.      Fixed a bug in dump which prevented the creation of the
 164         dumpdates file when doing a 0-level dump without already
 165         having a dumpdates file. Thanks to Patrik Schindler
 166         <poc@pocnet.net> for reporting the bug.
 167
 168 6.      Changed the way dump 'S' flag reports the size estimate
 169         from number of blocks into bytes (making it compatible
 170         with the Solaris version, and simplifying things for
 171         amanda users). Thanks to Jason L Tibbitts III
 172         <tibbs@math.uh.edu> for reporting the bug.
 173
 174 7.      Fixed a compatibility problem in linux/alpha dump tape format.
 175         Now the linux/alpha dump are (again) compatible with the
 176         other dump formats. But this breaks compatibility with
 177         older dumps made on alpha. Thanks to Mike Tibor
 178         <tibor@lib.uaa.alaska.edu> for helping me in finding this bug.
 179
 180 Changes between versions 0.4b10 and 0.4b11 (released December 5, 1999)
 181 ======================================================================
 182
 183 1.      Added a '--enable-kerberos' to configure.
 184
 185 2.      Added a 'S' option to dump which determines the amount of space
 186         that is needed to perform the dump without actually doing it, similar
 187         to the Sun's ufsdump 'S' option. Patch contributed by Rob Cermak
 188         <cermak@ahab.rutgers.edu>.
 189
 190 3.      Added a 'M' multi-volume option to dump and restore which enables
 191         dumping to multiple files (useful when dumping to an ext2
 192         partition to make several dump files in order to bypass the 2GB
 193         file size limitation). The 'f' argument is treated as a prefix and
 194         the output files will be named <prefix>001, <prefix>002 etc. With
 195         the 'M' flag, restore automatically selects the right file without
 196         asking to enter a new tape each time.
 197
 198 4.      Fixed a memory leak which was causing dump to grow very big
 199         (270MB when dumping a 10GB filesystem...). Thanks to Jason
 200         Fearon <jasonf@netrider.org.au> for reporting the bug.
 201
 202 Changes between versions 0.4b9 and 0.4b10 (released November 21, 1999)
 203 ======================================================================
 204
 205 1.      Make configure test if the system glob routines support
 206         extended syntax (ALTDIRFUNC). If not, use the internal glob
 207         routines instead of system ones. Thanks to Bernhard Sadlowski
 208         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug
 209         and helping me resolve this and other minor libc5 compiling
 210         glitches.
 211
 212 2.      Fix a problem when dumping a ext2fs with the 'filetype'
 213         feature enabled. Thanks to Patrick J. LoPresti
 214         <patl@cag.lcs.mit.edu> for reporting the bug and to
 215         Theodore Y. Ts'o <tytso@mit.edu> for providing the patch.
 216
 217 3.      Made the nodump flag work on directories. A directory which
 218         has the nodump flag gets never dumped, regardless of its
 219         contents.
 220
 221 4.      Integrate a patch from Jeremy Fitzhardinge <jeremy@goop.org>
 222         which allows dump on an active ext3 filesystem. However, this
 223         is a "quick and dirty" patch which enables backup of an ext3
 224         filesystem through the ext2 compatibility (by ignoring the
 225         NEEDS_RECOVERY bit). The journal file is not recognized and
 226         it is dumped (it should not).
 227
 228 5.      Test the superblock compatibility flags when dumping, in order
 229         to be sure that we know how to deal with specific features.
 230
 231 Changes between versions 0.4b8 and 0.4b9 (released November 5, 1999)
 232 ====================================================================
 233
 234 1.      Use lchown instead of chown, fixing a possible security problem
 235         when restoring symlinks (a malicious user could use this
 236         to deliberately corrupt the ownership of important system files).
 237         Thanks to Chris Siebenmann <cks@utcc.utoronto.ca> for detecting
 238         this and providing the patch.
 239
 240 Changes between versions 0.4b7 and 0.4b8 (released November 3, 1999)
 241 ====================================================================
 242
 243 1.      Put dump sources under CVS, added Id tags in all files so
 244         one can use 'ident' on binary files.
 245
 246 2.      Added the dump/restore version in the usage text so one can
 247         easily verify the version he is using.
 248
 249 3.      Small patch from Nuno Oliveira <nuno@eq.uc.pt> which fixes
 250         a va_start/va_end problem on linux-ppc (always call va_start
 251         va_end in pairs each time we use a vararg function).
 252
 253 4.      Added again the DT_* constants because old libc does not
 254         contain them :(. Thanks to Eric Maisonobe <virnet@nat.fr>
 255         for submitting the bug report.
 256
 257 5.      Use ext2fs_llseek instead of llseek. With recent e2fsprogs
 258         this should enable dumping big (huge) filesystems.
 259
 260 6.      Added the RSH environment variable in order to be able to
 261         use a rsh replacement like ssh when doing remote backups (and
 262         bypass the security limitations of rcmd). Now you can do remote
 263         backups without being root (or making dump setuid root).
 264
 265 7.      Modified again the way dumpdates works. For incremental dumps,
 266         we need to read dumpdates even if we are not using 'u' option.
 267         Thanks to Bdale Garbee <bdale@gag.com> for his ideas on how
 268         this should work.
 269
 270 Changes between versions 0.4b6 and 0.4b7 (released October 8, 1999)
 271 ===================================================================
 272
 273 1.      Removed the 'k' flag from the restore 'about' text if kerberos
 274         was not compiled in.
 275
 276 2.      Prototyped (f)setflags from e2fsprogs and corrected the calls
 277         to them (fsetflags takes a char*, setflags an open fd!).
 278
 279 3.      (f)setflags is called only if the flags aren't empty. If the
 280         file is a special file, a warning is printed, because changing
 281         flags implies opening the device. Normally, a special file
 282         should not have any flag... (Debian bug #29775, patch provided
 283         by Abhijit Dasgupta <abhijit@ans.net>).
 284
 285 4.      Made possible to dump a file system not mentioned in /etc/fstab.
 286         (Debian bug #11904, patch provided by Eirik Fuller <eirik@netcom.com>).
 287
 288 5.      Changed the default behaviour to not create dumpdates
 289         unless 'u' option is specified. Removed the old "debian-patch"
 290         which provided the same thing. (Debian bug #38136, #33818).
 291
 292 6.      Removed all those dump*announce, since they were getting old...
 293
 294 7.      Added warning messages if dumpdates does not exist and
 295         when an inferior level dump does not exist (except for a level 0
 296         dump).
 297
 298 8.      Debugged the glob calls in interactive mode: restore used a
 299         dirent struct which was different from the /usr/include/dirent.h
 300         one (this used to work, is it a glibc2 change?), so none of the
 301         compat glob (which used /usr/include/dirent.h) or the system glob
 302         worked. Restore use now the system dirent (and the system
 303         DT_* constants), which are compatible with BSD ones.
 304
 305 9.      Added a configure flag (--with-dumpdatespath) to specify
 306         the location of dumpdates file. By default, it is
 307         /etc/dumpdates.
 308
 309 10.     Added the "AUTHOR" and "AVAILABILITY" sections and
 310         included the current date/version in man pages.
 311
 312 11.     Corrected the estimation of remaining time when
 313         the operator doesn't change the tapes quickly enough. This
 314         was an old bug, I thought I corrected it, and discovered
 315         that in fact it was corrected in two different places, so
 316         the results canceled each other...
 317
 318 Changes between versions 0.4b5 and 0.4b6 (released October 1, 1999)
 319 ===================================================================
 320
 321 1.      Integrated multiple patches from RedHat, Debian and SuSE:
 322
 323         - tweak dump/itime.c to not try to read dumpdates if the 'u' option
 324           isn't specified.
 325         - several fixes in the man pages.
 326         - update the default tape device to /dev/st0.
 327         - many updates for Linux Alpha (byte ordering, size_t etc).
 328         - buffer overruns.
 329         - use environment variable for TMPDIR (instead of /tmp).
 330         - use sigjmp_buf instead of jmp_buf (RedHat bug #3260).
 331         - workaround egcs bug (RedHat bugs #4281 and #2989).
 332         - wire $(OPT) throughout Makefile's.
 333
 334 2.      Upgrade the dump revision to 1, making possible to dump filesystems
 335         made with e2fsprogs-1.15 or newer. Nothing seems to break...
 336
 337 3.      Fix some compile warnings, prototype all functions.
 338
 339 4.      Use glibc err/glob instead of internal compatibility
 340         routines (only if available).
 341
 342 5.      Fix a compile error on Linux 2.2.7 / libc5 (5.4.44) (patch provided
 343         by Bernhard Sadlowski <sadlowsk@mathematik.uni-bielefeld.de>).
 344
 345 Changes between versions 0.4b4 and 0.4b5 (released September 22, 1999)
 346 ======================================================================
 347
 348 1.      Integrated the changes from FreeBSD-3.1-RELEASE
 349         (mostly bug fixes, buffer overruns, dump has now an "automatic
 350         tape length calculation" flag, dump/restore can use kerberos now
 351         (this is NOT tested), use environment variables for TAPE and
 352         RMT etc.).
 353
 354 2.      Integrated three RedHat patches ("glibc", "kernel" and "bread" patches)
 355
 356 3.      Corrected a bug in restore when using 'C' option with multi-volumes
 357         tapes (files splited accros two tapes give "size changed" errors
 358         when comparing).
 359
 360 4.      Corrected the long standing bug when dumping multiple tapes.
 361         This works for me, needs further testing.
 362
 363 Changes between versions 0.4b3 and 0.4b4 (released January 17, 1997)
 364 ====================================================================
 365
 366 1.      Dump now runs correctly on kernels 2.1.x
 367         Fix made by Gerald Peters <gapeters@worldnet.att.net>
 368
 369 Changes between versions 0.4b2 and 0.4b3
 370 ========================================
 371
 372 1.      Use realpath() if available
 373
 374 2.      Report statistics
 375
 376 Changes between versions 0.4b1 and 0.4b2
 377 ========================================
 378
 379 1.      Fixed the bug fix from Greg Lutz (I had made a mistake when integrating
 380         the patch)
 381
 382 2.      Fixed restore to make it able to read FreeBSD 2.x dumps again
 383
 384 3.      Fixed configure.in to correctly handle --enable-rmt
 385
 386 Changes between versions 0.3 and 0.4b1
 387 ======================================
 388
 389 1.      Integrated the changes from 4.4BSD-Lite2
 390
 391 2.      Integrated the patches from Debian and Red Hat
 392
 393 3.      Portability changes: use the __u32, __u16, __s32, and __s16 types
 394
 395 4.      Changed dump to use the Ext2fs library to get block addresses.  This
 396         should solve the endianness problem on SparcLinux.
 397
 398 5.      Created a configure.in file (shamelessly stolen from the e2fsprogs
 399         distribution's one) to use autoconf
 400
 401 6.      Fixed a few minor bugs
 402
 403 Changes between versions 0.2e and 0.2f
 404 ======================================
 405
 406 1.      Added the creation of named pipes (fifos) in restore.
 407
 408 2.      Added the -N flag in the restore manual page.
 409
 410 3.      Added the file kernel.patch which contains the llseek() optimization
 411         patch for 1.2.x kernels.
 412
 413 4.      Fixed a bug in the restoration of symbolic links: owner and group were
 414         not restored.
 415
 416 5.      Integrated some changes from FreeBSD 2.2.
 417
 418 6.      Added a call to ftruncate() after restoring each file to restore
 419         correctly files ending by a hole.
 420
 421 Changes between versions 0.2d and 0.2e
 422 ======================================
 423
 424 1.      Fixed a bug in the "set owner/mode" process.  Every file was restored
 425         with owner = root (0) and group = root/wheel/whatever (0).
 426
 427 Changes between versions 0.2c and 0.2d
 428 ======================================
 429
 430 1.      Dump is now able to backup 2GB+ filesystems.
 431
 432 2.      Dump and restore can now be linked as static binaries.
 433
 434 Changes between versions 0.2b and 0.2c
 435 ======================================
 436
 437 1.      Fixed a bug when dumping ``slow'' (i.e. normal) symbolic links.
 438
 439 Changes between versions 0.2a and 0.2b
 440 ======================================
 441
 442 1.      Really fixed the bug that I should have corrected in 0.2a.
 443
 444 2.      Enabled optimization again.
 445
 446 Changes between versions 0.2 and 0.2a
 447 =====================================
 448
 449 1.      Disabled the optimization during compilation.
 450
 451 Changes between versions 0.1 and 0.2
 452 ====================================
 453
 454 1.      Fixed a bug in fstab.c which caused a null pointer to be stored in
 455         the fs_type field (actually, I modified the file fstab.c to make it
 456         use the mntent functions).
 457
 458 2.      Dump and restore now use a 4.3 BSD compatible dump format.  Backups
 459         made by dump should be readable by the BSD restore and backups made
 460         by the BSD dump should be readable by restore.  Unfortunately, this
 461         means that the dump format has changed between version 0.1 and version
 462         0.2 :-(
 463
 464 3.      Dump is now able to backup a subtree, it is no longer limited to whole
 465         filesystems like the BSD version.
 466
 467 4.      Dump now uses ext2_llseek() so it is able to backup filesystems bigger
 468         than 2 GB.
 469
 470 Changes between versions 0.0 and 0.1
 471 ====================================
 472
 473 1.      Now create links rdump and rrestore during the `make install' step.
 474
 475 2.      Linux port specific bugs added to the manual pages
 476
 477 3.      Incorrect estimation of the number of tapes blocks fixed when doing
 478         incremental backups.
 479
 480 4.      Better ls-like format in restore in interactive mode.