CHANGES

   1 $Id: CHANGES,v 1.52 2000/03/10 10:03:09 stelian Exp $
   2
   3 Changes between versions 0.4b15 and 0.4b16 (released ?????????????)
   4 ===================================================================
   5
   6 1.      Fixed some several duplicate 'DUMP: DUMP:' in the
   7         output of dump.
   8
   9 2.      Corrected the estimation of blocks to dump. Note that
  10         this is still wrong for large directory inodes, due
  11         to the size of a BSD directory entry on the tape
  12         (estimation is based on the size of the ext2 directory,
  13         which is smaller because it doesn't contain the null
  14         character at the end).
  15
  16 3.      Made dump report the total number of MB written to
  17         tape at the end of run. Thanks to W. Reilly Cooley
  18         <wcooley@nakedape.cc> for the patch.
  19
  20 4.      Added the -X option to restore giving the possibility
  21         to read the names of the files to be extracted/listed
  22         from a text file (in addition of the command line).
  23         Thanks to Dejan Muhamedagic <dejan@quant-x.com> for the
  24         patch.
  25
  26 5.      Added the device name and the current volume number
  27         as arguments to the end of tape script (dump -F option).
  28
  29 Changes between versions 0.4b14 and 0.4b15 (released March 2, 2000)
  30 ===================================================================
  31
  32 1.      Added a prompt command in interactive restore mode. Thanks
  33         to Andreas Dilger <adilger@home.com> for the patch.
  34
  35 2.      Fixed a buffer overflow problem in dump (caused by
  36         not checking the size of the filesystem parameter).
  37         Thanks to Kim Yong-jun <loveyou@hackerslab.org> for
  38         reporting this on Bugtraq (and to several dump users
  39         who forwarded me his mail).
  40
  41 3.      Added the '-F script' option to dump in order to
  42         launch a script at the end of each tape (to be used
  43         with a tape changer, or to notify the sysadmin by
  44         pager etc.).
  45
  46 4.      Fixed a bug in restore compare code caused by the changes
  47         I made in 0.4b14.
  48
  49 5.      Fixed the treatment of options using the old BSD syntax
  50         in both dump and restore.
  51
  52 Changes between versions 0.4b13 and 0.4b14 (released February 10, 2000)
  53 =======================================================================
  54
  55 1.      Fixed a bug in dump which may have caused invalid deleted
  56         directories to be dumped out if they were deleted after the
  57         mapping pass. This could occure on active filesystem and lead
  58         to heap corruption (causing dump malfunction in many possible ways).
  59         Thanks to Jan Sanislo <oystr@cs.washington.edu> for finding this
  60         bug and submitting the patch.
  61
  62 2.      Fixed the handling of the filesystem parameter in dump. A
  63         '/mnt/disk' parameter caused the disk contents to be dumped,
  64         but a '/mnt/disk/' parameter caused the mountpoint directory
  65         to be dumped (generally an empty directory).
  66
  67 3.      Improved the output of dump in order to tell which directory
  68         it is currently dumping (when dumping a subtree).
  69
  70 4.      Added the '-e' exclude inode option to dump. Thanks to
  71         Isaac Chuang <ike@isl.stanford.edu> for contributing with the patch.
  72
  73 5.      Added a REPORTING-BUGS file in order to provide a guide
  74         on how to correctly report a bug in dump/restore.
  75
  76 6.      Fixed a restore problem when restoring a hard link to an inode
  77         having the immutable or append-only attribute set. Thanks to
  78         Ambrose Li <acli@mingpaoxpress.com> for submitting the patch.
  79
  80 7.      Fixed a compatibility problem between dumps made on little
  81         endian machines (the format was correct) and big endian
  82         machines (the format was incorrect). This fix break the
  83         compatibility with the older dumps made on big endian
  84         machines (sparc, m86k, ppc etc). For the first time in
  85         linux dump's history (I believe), the dumps made by *BSD,
  86         Linux/alpha, Linux/sparc and Linux/x86 are compatible,
  87         so interchangeable. Thanks to Rob Cermak
  88         <cermak@ahab.rutgers.edu> for submitting the bug and
  89         helping me test the fix.
  90
  91 8.      Fixed the way dump reports the remaining percent/time, if
  92         the number of blocks actually dumped exceeds the estimated
  93         number of blocks. Thanks to Jean-Paul van der Jagt
  94         <jeanpaul@dutepp0.et.tudelft.nl> for reporting the bug.
  95
  96 Changes between versions 0.4b12 and 0.4b13 (released January 21, 2000)
  97 ======================================================================
  98
  99 1.      Small Y2K fix in the man pages :). Thanks to Bernhard Sadlowski
 100         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug.
 101
 102 2.      Removed the requirement to build the RPM as root from the
 103         spec file. Thanks to Christian Weisgerber
 104         <naddy@mips.rhein-neckar.de> for submitting this.
 105
 106 3.      Fixed a bug in dump related to the 'filetype' feature of ext2fs,
 107         causing dump to block when dumping really huge filesystems.
 108         Many thanks to Patrik Schindler <poc@pocnet.net> for
 109         helping me find this bug.
 110
 111 4.      Fixed the treatment for an interrupt signal when dump access
 112         the remote tape through RSH. Thanks to Christian Weisgerber
 113         <naddy@mips.rhein-neckar.de> for providing the patch.
 114
 115 5.      Fixed a bug which was causing dump/restore to display
 116         garbage characters instead of the remote host name.
 117
 118 Changes between versions 0.4b11 and 0.4b12 (released January 8, 2000)
 119 =====================================================================
 120
 121 1.      Small fix in the dump man page. Thanks to Thorsten Kukuk
 122         <kukuk@suse.de> for submitting the patch.
 123
 124 2.      Fix for the exit code when using the size estimate option of
 125         dump. Thanks to Matti Taskinen <mkt@rni.helsinki.fi> for
 126         submitting the patch.
 127
 128 3.      Handle EINTR in atomical reads/writes in dump, which was causing
 129         dump to fail on some systems. Thanks to Eric Jergensen
 130         <eric@dvns.com> for reporting the bug and submitting the patch.
 131
 132 4.      Handle more than 16 characters for the device names in dumpdates.
 133         (up to 255 now). Thanks to Rainer Clasen <bj@ncc.cicely.de> for
 134         tracking down the problem and proposing the solution.
 135
 136 5.      Fixed a bug in dump which prevented the creation of the
 137         dumpdates file when doing a 0-level dump without already
 138         having a dumpdates file. Thanks to Patrik Schindler
 139         <poc@pocnet.net> for reporting the bug.
 140
 141 6.      Changed the way dump 'S' flag reports the size estimate
 142         from number of blocks into bytes (making it compatible
 143         with the Solaris version, and simplifying things for
 144         amanda users). Thanks to Jason L Tibbitts III
 145         <tibbs@math.uh.edu> for reporting the bug.
 146
 147 7.      Fixed a compatibility problem in linux/alpha dump tape format.
 148         Now the linux/alpha dump are (again) compatible with the
 149         other dump formats. But this breaks compatibility with
 150         older dumps made on alpha. Thanks to Mike Tibor
 151         <tibor@lib.uaa.alaska.edu> for helping me in finding this bug.
 152
 153 Changes between versions 0.4b10 and 0.4b11 (released December 5, 1999)
 154 ======================================================================
 155
 156 1.      Added a '--enable-kerberos' to configure.
 157
 158 2.      Added a 'S' option to dump which determines the amount of space
 159         that is needed to perform the dump without actually doing it, similar
 160         to the Sun's ufsdump 'S' option. Patch contributed by Rob Cermak
 161         <cermak@ahab.rutgers.edu>.
 162
 163 3.      Added a 'M' multi-volume option to dump and restore which enables
 164         dumping to multiple files (useful when dumping to an ext2
 165         partition to make several dump files in order to bypass the 2GB
 166         file size limitation). The 'f' argument is treated as a prefix and
 167         the output files will be named <prefix>001, <prefix>002 etc. With
 168         the 'M' flag, restore automatically selects the right file without
 169         asking to enter a new tape each time.
 170
 171 4.      Fixed a memory leak which was causing dump to grow very big
 172         (270MB when dumping a 10GB filesystem...). Thanks to Jason
 173         Fearon <jasonf@netrider.org.au> for reporting the bug.
 174
 175 Changes between versions 0.4b9 and 0.4b10 (released November 21, 1999)
 176 ======================================================================
 177
 178 1.      Make configure test if the system glob routines support
 179         extended syntax (ALTDIRFUNC). If not, use the internal glob
 180         routines instead of system ones. Thanks to Bernhard Sadlowski
 181         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug
 182         and helping me resolve this and other minor libc5 compiling
 183         glitches.
 184
 185 2.      Fix a problem when dumping a ext2fs with the 'filetype'
 186         feature enabled. Thanks to Patrick J. LoPresti
 187         <patl@cag.lcs.mit.edu> for reporting the bug and to
 188         Theodore Y. Ts'o <tytso@mit.edu> for providing the patch.
 189
 190 3.      Made the nodump flag work on directories. A directory which
 191         has the nodump flag gets never dumped, regardless of its
 192         contents.
 193
 194 4.      Integrate a patch from Jeremy Fitzhardinge <jeremy@goop.org>
 195         which allows dump on an active ext3 filesystem. However, this
 196         is a "quick and dirty" patch which enables backup of an ext3
 197         filesystem through the ext2 compatibility (by ignoring the
 198         NEEDS_RECOVERY bit). The journal file is not recognized and
 199         it is dumped (it should not).
 200
 201 5.      Test the superblock compatibility flags when dumping, in order
 202         to be sure that we know how to deal with specific features.
 203
 204 Changes between versions 0.4b8 and 0.4b9 (released November 5, 1999)
 205 ====================================================================
 206
 207 1.      Use lchown instead of chown, fixing a possible security problem
 208         when restoring symlinks (a malicious user could use this
 209         to deliberately corrupt the ownership of important system files).
 210         Thanks to Chris Siebenmann <cks@utcc.utoronto.ca> for detecting
 211         this and providing the patch.
 212
 213 Changes between versions 0.4b7 and 0.4b8 (released November 3, 1999)
 214 ====================================================================
 215
 216 1.      Put dump sources under CVS, added Id tags in all files so
 217         one can use 'ident' on binary files.
 218
 219 2.      Added the dump/restore version in the usage text so one can
 220         easily verify the version he is using.
 221
 222 3.      Small patch from Nuno Oliveira <nuno@eq.uc.pt> which fixes
 223         a va_start/va_end problem on linux-ppc (always call va_start
 224         va_end in pairs each time we use a vararg function).
 225
 226 4.      Added again the DT_* constants because old libc does not
 227         contain them :(. Thanks to Eric Maisonobe <virnet@nat.fr>
 228         for submitting the bug report.
 229
 230 5.      Use ext2fs_llseek instead of llseek. With recent e2fsprogs
 231         this should enable dumping big (huge) filesystems.
 232
 233 6.      Added the RSH environment variable in order to be able to
 234         use a rsh replacement like ssh when doing remote backups (and
 235         bypass the security limitations of rcmd). Now you can do remote
 236         backups without being root (or making dump setuid root).
 237
 238 7.      Modified again the way dumpdates works. For incremental dumps,
 239         we need to read dumpdates even if we are not using 'u' option.
 240         Thanks to Bdale Garbee <bdale@gag.com> for his ideas on how
 241         this should work.
 242
 243 Changes between versions 0.4b6 and 0.4b7 (released October 8, 1999)
 244 ===================================================================
 245
 246 1.      Removed the 'k' flag from the restore 'about' text if kerberos
 247         was not compiled in.
 248
 249 2.      Prototyped (f)setflags from e2fsprogs and corrected the calls
 250         to them (fsetflags takes a char*, setflags an open fd!).
 251
 252 3.      (f)setflags is called only if the flags aren't empty. If the
 253         file is a special file, a warning is printed, because changing
 254         flags implies opening the device. Normally, a special file
 255         should not have any flag... (Debian bug #29775, patch provided
 256         by Abhijit Dasgupta <abhijit@ans.net>).
 257
 258 4.      Made possible to dump a file system not mentioned in /etc/fstab.
 259         (Debian bug #11904, patch provided by Eirik Fuller <eirik@netcom.com>).
 260
 261 5.      Changed the default behaviour to not create dumpdates
 262         unless 'u' option is specified. Removed the old "debian-patch"
 263         which provided the same thing. (Debian bug #38136, #33818).
 264
 265 6.      Removed all those dump*announce, since they were getting old...
 266
 267 7.      Added warning messages if dumpdates does not exist and
 268         when an inferior level dump does not exist (except for a level 0
 269         dump).
 270
 271 8.      Debugged the glob calls in interactive mode: restore used a
 272         dirent struct which was different from the /usr/include/dirent.h
 273         one (this used to work, is it a glibc2 change?), so none of the
 274         compat glob (which used /usr/include/dirent.h) or the system glob
 275         worked. Restore use now the system dirent (and the system
 276         DT_* constants), which are compatible with BSD ones.
 277
 278 9.      Added a configure flag (--with-dumpdatespath) to specify
 279         the location of dumpdates file. By default, it is
 280         /etc/dumpdates.
 281
 282 10.     Added the "AUTHOR" and "AVAILABILITY" sections and
 283         included the current date/version in man pages.
 284
 285 11.     Corrected the estimation of remaining time when
 286         the operator doesn't change the tapes quickly enough. This
 287         was an old bug, I thought I corrected it, and discovered
 288         that in fact it was corrected in two different places, so
 289         the results canceled each other...
 290
 291 Changes between versions 0.4b5 and 0.4b6 (released October 1, 1999)
 292 ===================================================================
 293
 294 1.      Integrated multiple patches from RedHat, Debian and SuSE:
 295
 296         - tweak dump/itime.c to not try to read dumpdates if the 'u' option
 297           isn't specified.
 298         - several fixes in the man pages.
 299         - update the default tape device to /dev/st0.
 300         - many updates for Linux Alpha (byte ordering, size_t etc).
 301         - buffer overruns.
 302         - use environment variable for TMPDIR (instead of /tmp).
 303         - use sigjmp_buf instead of jmp_buf (RedHat bug #3260).
 304         - workaround egcs bug (RedHat bugs #4281 and #2989).
 305         - wire $(OPT) throughout Makefile's.
 306
 307 2.      Upgrade the dump revision to 1, making possible to dump filesystems
 308         made with e2fsprogs-1.15 or newer. Nothing seems to break...
 309
 310 3.      Fix some compile warnings, prototype all functions.
 311
 312 4.      Use glibc err/glob instead of internal compatibility
 313         routines (only if available).
 314
 315 5.      Fix a compile error on Linux 2.2.7 / libc5 (5.4.44) (patch provided
 316         by Bernhard Sadlowski <sadlowsk@mathematik.uni-bielefeld.de>).
 317
 318 Changes between versions 0.4b4 and 0.4b5 (released September 22, 1999)
 319 ======================================================================
 320
 321 1.      Integrated the changes from FreeBSD-3.1-RELEASE
 322         (mostly bug fixes, buffer overruns, dump has now an "automatic
 323         tape length calculation" flag, dump/restore can use kerberos now
 324         (this is NOT tested), use environment variables for TAPE and
 325         RMT etc.).
 326
 327 2.      Integrated three RedHat patches ("glibc", "kernel" and "bread" patches)
 328
 329 3.      Corrected a bug in restore when using 'C' option with multi-volumes
 330         tapes (files splited accros two tapes give "size changed" errors
 331         when comparing).
 332
 333 4.      Corrected the long standing bug when dumping multiple tapes.
 334         This works for me, needs further testing.
 335
 336 Changes between versions 0.4b3 and 0.4b4 (released January 17, 1997)
 337 ====================================================================
 338
 339 1.      Dump now runs correctly on kernels 2.1.x
 340         Fix made by Gerald Peters <gapeters@worldnet.att.net>
 341
 342 Changes between versions 0.4b2 and 0.4b3
 343 ========================================
 344
 345 1.      Use realpath() if available
 346
 347 2.      Report statistics
 348
 349 Changes between versions 0.4b1 and 0.4b2
 350 ========================================
 351
 352 1.      Fixed the bug fix from Greg Lutz (I had made a mistake when integrating
 353         the patch)
 354
 355 2.      Fixed restore to make it able to read FreeBSD 2.x dumps again
 356
 357 3.      Fixed configure.in to correctly handle --enable-rmt
 358
 359 Changes between versions 0.3 and 0.4b1
 360 ======================================
 361
 362 1.      Integrated the changes from 4.4BSD-Lite2
 363
 364 2.      Integrated the patches from Debian and Red Hat
 365
 366 3.      Portability changes: use the __u32, __u16, __s32, and __s16 types
 367
 368 4.      Changed dump to use the Ext2fs library to get block addresses.  This
 369         should solve the endianness problem on SparcLinux.
 370
 371 5.      Created a configure.in file (shamelessly stolen from the e2fsprogs
 372         distribution's one) to use autoconf
 373
 374 6.      Fixed a few minor bugs
 375
 376 Changes between versions 0.2e and 0.2f
 377 ======================================
 378
 379 1.      Added the creation of named pipes (fifos) in restore.
 380
 381 2.      Added the -N flag in the restore manual page.
 382
 383 3.      Added the file kernel.patch which contains the llseek() optimization
 384         patch for 1.2.x kernels.
 385
 386 4.      Fixed a bug in the restoration of symbolic links: owner and group were
 387         not restored.
 388
 389 5.      Integrated some changes from FreeBSD 2.2.
 390
 391 6.      Added a call to ftruncate() after restoring each file to restore
 392         correctly files ending by a hole.
 393
 394 Changes between versions 0.2d and 0.2e
 395 ======================================
 396
 397 1.      Fixed a bug in the "set owner/mode" process.  Every file was restored
 398         with owner = root (0) and group = root/wheel/whatever (0).
 399
 400 Changes between versions 0.2c and 0.2d
 401 ======================================
 402
 403 1.      Dump is now able to backup 2GB+ filesystems.
 404
 405 2.      Dump and restore can now be linked as static binaries.
 406
 407 Changes between versions 0.2b and 0.2c
 408 ======================================
 409
 410 1.      Fixed a bug when dumping ``slow'' (i.e. normal) symbolic links.
 411
 412 Changes between versions 0.2a and 0.2b
 413 ======================================
 414
 415 1.      Really fixed the bug that I should have corrected in 0.2a.
 416
 417 2.      Enabled optimization again.
 418
 419 Changes between versions 0.2 and 0.2a
 420 =====================================
 421
 422 1.      Disabled the optimization during compilation.
 423
 424 Changes between versions 0.1 and 0.2
 425 ====================================
 426
 427 1.      Fixed a bug in fstab.c which caused a null pointer to be stored in
 428         the fs_type field (actually, I modified the file fstab.c to make it
 429         use the mntent functions).
 430
 431 2.      Dump and restore now use a 4.3 BSD compatible dump format.  Backups
 432         made by dump should be readable by the BSD restore and backups made
 433         by the BSD dump should be readable by restore.  Unfortunately, this
 434         means that the dump format has changed between version 0.1 and version
 435         0.2 :-(
 436
 437 3.      Dump is now able to backup a subtree, it is no longer limited to whole
 438         filesystems like the BSD version.
 439
 440 4.      Dump now uses ext2_llseek() so it is able to backup filesystems bigger
 441         than 2 GB.
 442
 443 Changes between versions 0.0 and 0.1
 444 ====================================
 445
 446 1.      Now create links rdump and rrestore during the `make install' step.
 447
 448 2.      Linux port specific bugs added to the manual pages
 449
 450 3.      Incorrect estimation of the number of tapes blocks fixed when doing
 451         incremental backups.
 452
 453 4.      Better ls-like format in restore in interactive mode.