CHANGES

   1 $Id: CHANGES,v 1.56 2000/05/28 16:51:13 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 Changes between versions 0.4b15 and 0.4b16 (released March 11, 2000)
  20 ====================================================================
  21
  22 1.      Fixed some several duplicate 'DUMP: DUMP:' in the
  23         output of dump.
  24
  25 2.      Corrected the estimation of blocks to dump. Note that
  26         this is still wrong for large directory inodes, due
  27         to the size of a BSD directory entry on the tape
  28         (estimation is based on the size of the ext2 directory,
  29         which is smaller because it doesn't contain the null
  30         character at the end).
  31
  32 3.      Made dump report the total number of MB written to
  33         tape at the end of run. Thanks to W. Reilly Cooley
  34         <wcooley@nakedape.cc> for the patch.
  35
  36 4.      Added the -X option to restore giving the possibility
  37         to read the names of the files to be extracted/listed
  38         from a text file (in addition of the command line).
  39         Thanks to Dejan Muhamedagic <dejan@quant-x.com> for the
  40         patch.
  41
  42 5.      Added the device name and the current volume number
  43         as arguments to the end of tape script (dump -F option).
  44
  45 6.      Made the multi-volume dump work again (after having
  46         broken it in 0.4b15).
  47
  48 Changes between versions 0.4b14 and 0.4b15 (released March 2, 2000)
  49 ===================================================================
  50
  51 1.      Added a prompt command in interactive restore mode. Thanks
  52         to Andreas Dilger <adilger@home.com> for the patch.
  53
  54 2.      Fixed a buffer overflow problem in dump (caused by
  55         not checking the size of the filesystem parameter).
  56         Thanks to Kim Yong-jun <loveyou@hackerslab.org> for
  57         reporting this on Bugtraq (and to several dump users
  58         who forwarded me his mail).
  59
  60 3.      Added the '-F script' option to dump in order to
  61         launch a script at the end of each tape (to be used
  62         with a tape changer, or to notify the sysadmin by
  63         pager etc.).
  64
  65 4.      Fixed a bug in restore compare code caused by the changes
  66         I made in 0.4b14.
  67
  68 5.      Fixed the treatment of options using the old BSD syntax
  69         in both dump and restore.
  70
  71 Changes between versions 0.4b13 and 0.4b14 (released February 10, 2000)
  72 =======================================================================
  73
  74 1.      Fixed a bug in dump which may have caused invalid deleted
  75         directories to be dumped out if they were deleted after the
  76         mapping pass. This could occure on active filesystem and lead
  77         to heap corruption (causing dump malfunction in many possible ways).
  78         Thanks to Jan Sanislo <oystr@cs.washington.edu> for finding this
  79         bug and submitting the patch.
  80
  81 2.      Fixed the handling of the filesystem parameter in dump. A
  82         '/mnt/disk' parameter caused the disk contents to be dumped,
  83         but a '/mnt/disk/' parameter caused the mountpoint directory
  84         to be dumped (generally an empty directory).
  85
  86 3.      Improved the output of dump in order to tell which directory
  87         it is currently dumping (when dumping a subtree).
  88
  89 4.      Added the '-e' exclude inode option to dump. Thanks to
  90         Isaac Chuang <ike@isl.stanford.edu> for contributing with the patch.
  91
  92 5.      Added a REPORTING-BUGS file in order to provide a guide
  93         on how to correctly report a bug in dump/restore.
  94
  95 6.      Fixed a restore problem when restoring a hard link to an inode
  96         having the immutable or append-only attribute set. Thanks to
  97         Ambrose Li <acli@mingpaoxpress.com> for submitting the patch.
  98
  99 7.      Fixed a compatibility problem between dumps made on little
 100         endian machines (the format was correct) and big endian
 101         machines (the format was incorrect). This fix break the
 102         compatibility with the older dumps made on big endian
 103         machines (sparc, m86k, ppc etc). For the first time in
 104         linux dump's history (I believe), the dumps made by *BSD,
 105         Linux/alpha, Linux/sparc and Linux/x86 are compatible,
 106         so interchangeable. Thanks to Rob Cermak
 107         <cermak@ahab.rutgers.edu> for submitting the bug and
 108         helping me test the fix.
 109
 110 8.      Fixed the way dump reports the remaining percent/time, if
 111         the number of blocks actually dumped exceeds the estimated
 112         number of blocks. Thanks to Jean-Paul van der Jagt
 113         <jeanpaul@dutepp0.et.tudelft.nl> for reporting the bug.
 114
 115 Changes between versions 0.4b12 and 0.4b13 (released January 21, 2000)
 116 ======================================================================
 117
 118 1.      Small Y2K fix in the man pages :). Thanks to Bernhard Sadlowski
 119         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug.
 120
 121 2.      Removed the requirement to build the RPM as root from the
 122         spec file. Thanks to Christian Weisgerber
 123         <naddy@mips.rhein-neckar.de> for submitting this.
 124
 125 3.      Fixed a bug in dump related to the 'filetype' feature of ext2fs,
 126         causing dump to block when dumping really huge filesystems.
 127         Many thanks to Patrik Schindler <poc@pocnet.net> for
 128         helping me find this bug.
 129
 130 4.      Fixed the treatment for an interrupt signal when dump access
 131         the remote tape through RSH. Thanks to Christian Weisgerber
 132         <naddy@mips.rhein-neckar.de> for providing the patch.
 133
 134 5.      Fixed a bug which was causing dump/restore to display
 135         garbage characters instead of the remote host name.
 136
 137 Changes between versions 0.4b11 and 0.4b12 (released January 8, 2000)
 138 =====================================================================
 139
 140 1.      Small fix in the dump man page. Thanks to Thorsten Kukuk
 141         <kukuk@suse.de> for submitting the patch.
 142
 143 2.      Fix for the exit code when using the size estimate option of
 144         dump. Thanks to Matti Taskinen <mkt@rni.helsinki.fi> for
 145         submitting the patch.
 146
 147 3.      Handle EINTR in atomical reads/writes in dump, which was causing
 148         dump to fail on some systems. Thanks to Eric Jergensen
 149         <eric@dvns.com> for reporting the bug and submitting the patch.
 150
 151 4.      Handle more than 16 characters for the device names in dumpdates.
 152         (up to 255 now). Thanks to Rainer Clasen <bj@ncc.cicely.de> for
 153         tracking down the problem and proposing the solution.
 154
 155 5.      Fixed a bug in dump which prevented the creation of the
 156         dumpdates file when doing a 0-level dump without already
 157         having a dumpdates file. Thanks to Patrik Schindler
 158         <poc@pocnet.net> for reporting the bug.
 159
 160 6.      Changed the way dump 'S' flag reports the size estimate
 161         from number of blocks into bytes (making it compatible
 162         with the Solaris version, and simplifying things for
 163         amanda users). Thanks to Jason L Tibbitts III
 164         <tibbs@math.uh.edu> for reporting the bug.
 165
 166 7.      Fixed a compatibility problem in linux/alpha dump tape format.
 167         Now the linux/alpha dump are (again) compatible with the
 168         other dump formats. But this breaks compatibility with
 169         older dumps made on alpha. Thanks to Mike Tibor
 170         <tibor@lib.uaa.alaska.edu> for helping me in finding this bug.
 171
 172 Changes between versions 0.4b10 and 0.4b11 (released December 5, 1999)
 173 ======================================================================
 174
 175 1.      Added a '--enable-kerberos' to configure.
 176
 177 2.      Added a 'S' option to dump which determines the amount of space
 178         that is needed to perform the dump without actually doing it, similar
 179         to the Sun's ufsdump 'S' option. Patch contributed by Rob Cermak
 180         <cermak@ahab.rutgers.edu>.
 181
 182 3.      Added a 'M' multi-volume option to dump and restore which enables
 183         dumping to multiple files (useful when dumping to an ext2
 184         partition to make several dump files in order to bypass the 2GB
 185         file size limitation). The 'f' argument is treated as a prefix and
 186         the output files will be named <prefix>001, <prefix>002 etc. With
 187         the 'M' flag, restore automatically selects the right file without
 188         asking to enter a new tape each time.
 189
 190 4.      Fixed a memory leak which was causing dump to grow very big
 191         (270MB when dumping a 10GB filesystem...). Thanks to Jason
 192         Fearon <jasonf@netrider.org.au> for reporting the bug.
 193
 194 Changes between versions 0.4b9 and 0.4b10 (released November 21, 1999)
 195 ======================================================================
 196
 197 1.      Make configure test if the system glob routines support
 198         extended syntax (ALTDIRFUNC). If not, use the internal glob
 199         routines instead of system ones. Thanks to Bernhard Sadlowski
 200         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug
 201         and helping me resolve this and other minor libc5 compiling
 202         glitches.
 203
 204 2.      Fix a problem when dumping a ext2fs with the 'filetype'
 205         feature enabled. Thanks to Patrick J. LoPresti
 206         <patl@cag.lcs.mit.edu> for reporting the bug and to
 207         Theodore Y. Ts'o <tytso@mit.edu> for providing the patch.
 208
 209 3.      Made the nodump flag work on directories. A directory which
 210         has the nodump flag gets never dumped, regardless of its
 211         contents.
 212
 213 4.      Integrate a patch from Jeremy Fitzhardinge <jeremy@goop.org>
 214         which allows dump on an active ext3 filesystem. However, this
 215         is a "quick and dirty" patch which enables backup of an ext3
 216         filesystem through the ext2 compatibility (by ignoring the
 217         NEEDS_RECOVERY bit). The journal file is not recognized and
 218         it is dumped (it should not).
 219
 220 5.      Test the superblock compatibility flags when dumping, in order
 221         to be sure that we know how to deal with specific features.
 222
 223 Changes between versions 0.4b8 and 0.4b9 (released November 5, 1999)
 224 ====================================================================
 225
 226 1.      Use lchown instead of chown, fixing a possible security problem
 227         when restoring symlinks (a malicious user could use this
 228         to deliberately corrupt the ownership of important system files).
 229         Thanks to Chris Siebenmann <cks@utcc.utoronto.ca> for detecting
 230         this and providing the patch.
 231
 232 Changes between versions 0.4b7 and 0.4b8 (released November 3, 1999)
 233 ====================================================================
 234
 235 1.      Put dump sources under CVS, added Id tags in all files so
 236         one can use 'ident' on binary files.
 237
 238 2.      Added the dump/restore version in the usage text so one can
 239         easily verify the version he is using.
 240
 241 3.      Small patch from Nuno Oliveira <nuno@eq.uc.pt> which fixes
 242         a va_start/va_end problem on linux-ppc (always call va_start
 243         va_end in pairs each time we use a vararg function).
 244
 245 4.      Added again the DT_* constants because old libc does not
 246         contain them :(. Thanks to Eric Maisonobe <virnet@nat.fr>
 247         for submitting the bug report.
 248
 249 5.      Use ext2fs_llseek instead of llseek. With recent e2fsprogs
 250         this should enable dumping big (huge) filesystems.
 251
 252 6.      Added the RSH environment variable in order to be able to
 253         use a rsh replacement like ssh when doing remote backups (and
 254         bypass the security limitations of rcmd). Now you can do remote
 255         backups without being root (or making dump setuid root).
 256
 257 7.      Modified again the way dumpdates works. For incremental dumps,
 258         we need to read dumpdates even if we are not using 'u' option.
 259         Thanks to Bdale Garbee <bdale@gag.com> for his ideas on how
 260         this should work.
 261
 262 Changes between versions 0.4b6 and 0.4b7 (released October 8, 1999)
 263 ===================================================================
 264
 265 1.      Removed the 'k' flag from the restore 'about' text if kerberos
 266         was not compiled in.
 267
 268 2.      Prototyped (f)setflags from e2fsprogs and corrected the calls
 269         to them (fsetflags takes a char*, setflags an open fd!).
 270
 271 3.      (f)setflags is called only if the flags aren't empty. If the
 272         file is a special file, a warning is printed, because changing
 273         flags implies opening the device. Normally, a special file
 274         should not have any flag... (Debian bug #29775, patch provided
 275         by Abhijit Dasgupta <abhijit@ans.net>).
 276
 277 4.      Made possible to dump a file system not mentioned in /etc/fstab.
 278         (Debian bug #11904, patch provided by Eirik Fuller <eirik@netcom.com>).
 279
 280 5.      Changed the default behaviour to not create dumpdates
 281         unless 'u' option is specified. Removed the old "debian-patch"
 282         which provided the same thing. (Debian bug #38136, #33818).
 283
 284 6.      Removed all those dump*announce, since they were getting old...
 285
 286 7.      Added warning messages if dumpdates does not exist and
 287         when an inferior level dump does not exist (except for a level 0
 288         dump).
 289
 290 8.      Debugged the glob calls in interactive mode: restore used a
 291         dirent struct which was different from the /usr/include/dirent.h
 292         one (this used to work, is it a glibc2 change?), so none of the
 293         compat glob (which used /usr/include/dirent.h) or the system glob
 294         worked. Restore use now the system dirent (and the system
 295         DT_* constants), which are compatible with BSD ones.
 296
 297 9.      Added a configure flag (--with-dumpdatespath) to specify
 298         the location of dumpdates file. By default, it is
 299         /etc/dumpdates.
 300
 301 10.     Added the "AUTHOR" and "AVAILABILITY" sections and
 302         included the current date/version in man pages.
 303
 304 11.     Corrected the estimation of remaining time when
 305         the operator doesn't change the tapes quickly enough. This
 306         was an old bug, I thought I corrected it, and discovered
 307         that in fact it was corrected in two different places, so
 308         the results canceled each other...
 309
 310 Changes between versions 0.4b5 and 0.4b6 (released October 1, 1999)
 311 ===================================================================
 312
 313 1.      Integrated multiple patches from RedHat, Debian and SuSE:
 314
 315         - tweak dump/itime.c to not try to read dumpdates if the 'u' option
 316           isn't specified.
 317         - several fixes in the man pages.
 318         - update the default tape device to /dev/st0.
 319         - many updates for Linux Alpha (byte ordering, size_t etc).
 320         - buffer overruns.
 321         - use environment variable for TMPDIR (instead of /tmp).
 322         - use sigjmp_buf instead of jmp_buf (RedHat bug #3260).
 323         - workaround egcs bug (RedHat bugs #4281 and #2989).
 324         - wire $(OPT) throughout Makefile's.
 325
 326 2.      Upgrade the dump revision to 1, making possible to dump filesystems
 327         made with e2fsprogs-1.15 or newer. Nothing seems to break...
 328
 329 3.      Fix some compile warnings, prototype all functions.
 330
 331 4.      Use glibc err/glob instead of internal compatibility
 332         routines (only if available).
 333
 334 5.      Fix a compile error on Linux 2.2.7 / libc5 (5.4.44) (patch provided
 335         by Bernhard Sadlowski <sadlowsk@mathematik.uni-bielefeld.de>).
 336
 337 Changes between versions 0.4b4 and 0.4b5 (released September 22, 1999)
 338 ======================================================================
 339
 340 1.      Integrated the changes from FreeBSD-3.1-RELEASE
 341         (mostly bug fixes, buffer overruns, dump has now an "automatic
 342         tape length calculation" flag, dump/restore can use kerberos now
 343         (this is NOT tested), use environment variables for TAPE and
 344         RMT etc.).
 345
 346 2.      Integrated three RedHat patches ("glibc", "kernel" and "bread" patches)
 347
 348 3.      Corrected a bug in restore when using 'C' option with multi-volumes
 349         tapes (files splited accros two tapes give "size changed" errors
 350         when comparing).
 351
 352 4.      Corrected the long standing bug when dumping multiple tapes.
 353         This works for me, needs further testing.
 354
 355 Changes between versions 0.4b3 and 0.4b4 (released January 17, 1997)
 356 ====================================================================
 357
 358 1.      Dump now runs correctly on kernels 2.1.x
 359         Fix made by Gerald Peters <gapeters@worldnet.att.net>
 360
 361 Changes between versions 0.4b2 and 0.4b3
 362 ========================================
 363
 364 1.      Use realpath() if available
 365
 366 2.      Report statistics
 367
 368 Changes between versions 0.4b1 and 0.4b2
 369 ========================================
 370
 371 1.      Fixed the bug fix from Greg Lutz (I had made a mistake when integrating
 372         the patch)
 373
 374 2.      Fixed restore to make it able to read FreeBSD 2.x dumps again
 375
 376 3.      Fixed configure.in to correctly handle --enable-rmt
 377
 378 Changes between versions 0.3 and 0.4b1
 379 ======================================
 380
 381 1.      Integrated the changes from 4.4BSD-Lite2
 382
 383 2.      Integrated the patches from Debian and Red Hat
 384
 385 3.      Portability changes: use the __u32, __u16, __s32, and __s16 types
 386
 387 4.      Changed dump to use the Ext2fs library to get block addresses.  This
 388         should solve the endianness problem on SparcLinux.
 389
 390 5.      Created a configure.in file (shamelessly stolen from the e2fsprogs
 391         distribution's one) to use autoconf
 392
 393 6.      Fixed a few minor bugs
 394
 395 Changes between versions 0.2e and 0.2f
 396 ======================================
 397
 398 1.      Added the creation of named pipes (fifos) in restore.
 399
 400 2.      Added the -N flag in the restore manual page.
 401
 402 3.      Added the file kernel.patch which contains the llseek() optimization
 403         patch for 1.2.x kernels.
 404
 405 4.      Fixed a bug in the restoration of symbolic links: owner and group were
 406         not restored.
 407
 408 5.      Integrated some changes from FreeBSD 2.2.
 409
 410 6.      Added a call to ftruncate() after restoring each file to restore
 411         correctly files ending by a hole.
 412
 413 Changes between versions 0.2d and 0.2e
 414 ======================================
 415
 416 1.      Fixed a bug in the "set owner/mode" process.  Every file was restored
 417         with owner = root (0) and group = root/wheel/whatever (0).
 418
 419 Changes between versions 0.2c and 0.2d
 420 ======================================
 421
 422 1.      Dump is now able to backup 2GB+ filesystems.
 423
 424 2.      Dump and restore can now be linked as static binaries.
 425
 426 Changes between versions 0.2b and 0.2c
 427 ======================================
 428
 429 1.      Fixed a bug when dumping ``slow'' (i.e. normal) symbolic links.
 430
 431 Changes between versions 0.2a and 0.2b
 432 ======================================
 433
 434 1.      Really fixed the bug that I should have corrected in 0.2a.
 435
 436 2.      Enabled optimization again.
 437
 438 Changes between versions 0.2 and 0.2a
 439 =====================================
 440
 441 1.      Disabled the optimization during compilation.
 442
 443 Changes between versions 0.1 and 0.2
 444 ====================================
 445
 446 1.      Fixed a bug in fstab.c which caused a null pointer to be stored in
 447         the fs_type field (actually, I modified the file fstab.c to make it
 448         use the mntent functions).
 449
 450 2.      Dump and restore now use a 4.3 BSD compatible dump format.  Backups
 451         made by dump should be readable by the BSD restore and backups made
 452         by the BSD dump should be readable by restore.  Unfortunately, this
 453         means that the dump format has changed between version 0.1 and version
 454         0.2 :-(
 455
 456 3.      Dump is now able to backup a subtree, it is no longer limited to whole
 457         filesystems like the BSD version.
 458
 459 4.      Dump now uses ext2_llseek() so it is able to backup filesystems bigger
 460         than 2 GB.
 461
 462 Changes between versions 0.0 and 0.1
 463 ====================================
 464
 465 1.      Now create links rdump and rrestore during the `make install' step.
 466
 467 2.      Linux port specific bugs added to the manual pages
 468
 469 3.      Incorrect estimation of the number of tapes blocks fixed when doing
 470         incremental backups.
 471
 472 4.      Better ls-like format in restore in interactive mode.