CHANGES

   1 $Id: CHANGES,v 1.58 2000/05/28 18:16:42 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 Changes between versions 0.4b15 and 0.4b16 (released March 11, 2000)
  25 ====================================================================
  26
  27 1.      Fixed some several duplicate 'DUMP: DUMP:' in the
  28         output of dump.
  29
  30 2.      Corrected the estimation of blocks to dump. Note that
  31         this is still wrong for large directory inodes, due
  32         to the size of a BSD directory entry on the tape
  33         (estimation is based on the size of the ext2 directory,
  34         which is smaller because it doesn't contain the null
  35         character at the end).
  36
  37 3.      Made dump report the total number of MB written to
  38         tape at the end of run. Thanks to W. Reilly Cooley
  39         <wcooley@nakedape.cc> for the patch.
  40
  41 4.      Added the -X option to restore giving the possibility
  42         to read the names of the files to be extracted/listed
  43         from a text file (in addition of the command line).
  44         Thanks to Dejan Muhamedagic <dejan@quant-x.com> for the
  45         patch.
  46
  47 5.      Added the device name and the current volume number
  48         as arguments to the end of tape script (dump -F option).
  49
  50 6.      Made the multi-volume dump work again (after having
  51         broken it in 0.4b15).
  52
  53 Changes between versions 0.4b14 and 0.4b15 (released March 2, 2000)
  54 ===================================================================
  55
  56 1.      Added a prompt command in interactive restore mode. Thanks
  57         to Andreas Dilger <adilger@home.com> for the patch.
  58
  59 2.      Fixed a buffer overflow problem in dump (caused by
  60         not checking the size of the filesystem parameter).
  61         Thanks to Kim Yong-jun <loveyou@hackerslab.org> for
  62         reporting this on Bugtraq (and to several dump users
  63         who forwarded me his mail).
  64
  65 3.      Added the '-F script' option to dump in order to
  66         launch a script at the end of each tape (to be used
  67         with a tape changer, or to notify the sysadmin by
  68         pager etc.).
  69
  70 4.      Fixed a bug in restore compare code caused by the changes
  71         I made in 0.4b14.
  72
  73 5.      Fixed the treatment of options using the old BSD syntax
  74         in both dump and restore.
  75
  76 Changes between versions 0.4b13 and 0.4b14 (released February 10, 2000)
  77 =======================================================================
  78
  79 1.      Fixed a bug in dump which may have caused invalid deleted
  80         directories to be dumped out if they were deleted after the
  81         mapping pass. This could occure on active filesystem and lead
  82         to heap corruption (causing dump malfunction in many possible ways).
  83         Thanks to Jan Sanislo <oystr@cs.washington.edu> for finding this
  84         bug and submitting the patch.
  85
  86 2.      Fixed the handling of the filesystem parameter in dump. A
  87         '/mnt/disk' parameter caused the disk contents to be dumped,
  88         but a '/mnt/disk/' parameter caused the mountpoint directory
  89         to be dumped (generally an empty directory).
  90
  91 3.      Improved the output of dump in order to tell which directory
  92         it is currently dumping (when dumping a subtree).
  93
  94 4.      Added the '-e' exclude inode option to dump. Thanks to
  95         Isaac Chuang <ike@isl.stanford.edu> for contributing with the patch.
  96
  97 5.      Added a REPORTING-BUGS file in order to provide a guide
  98         on how to correctly report a bug in dump/restore.
  99
 100 6.      Fixed a restore problem when restoring a hard link to an inode
 101         having the immutable or append-only attribute set. Thanks to
 102         Ambrose Li <acli@mingpaoxpress.com> for submitting the patch.
 103
 104 7.      Fixed a compatibility problem between dumps made on little
 105         endian machines (the format was correct) and big endian
 106         machines (the format was incorrect). This fix break the
 107         compatibility with the older dumps made on big endian
 108         machines (sparc, m86k, ppc etc). For the first time in
 109         linux dump's history (I believe), the dumps made by *BSD,
 110         Linux/alpha, Linux/sparc and Linux/x86 are compatible,
 111         so interchangeable. Thanks to Rob Cermak
 112         <cermak@ahab.rutgers.edu> for submitting the bug and
 113         helping me test the fix.
 114
 115 8.      Fixed the way dump reports the remaining percent/time, if
 116         the number of blocks actually dumped exceeds the estimated
 117         number of blocks. Thanks to Jean-Paul van der Jagt
 118         <jeanpaul@dutepp0.et.tudelft.nl> for reporting the bug.
 119
 120 Changes between versions 0.4b12 and 0.4b13 (released January 21, 2000)
 121 ======================================================================
 122
 123 1.      Small Y2K fix in the man pages :). Thanks to Bernhard Sadlowski
 124         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug.
 125
 126 2.      Removed the requirement to build the RPM as root from the
 127         spec file. Thanks to Christian Weisgerber
 128         <naddy@mips.rhein-neckar.de> for submitting this.
 129
 130 3.      Fixed a bug in dump related to the 'filetype' feature of ext2fs,
 131         causing dump to block when dumping really huge filesystems.
 132         Many thanks to Patrik Schindler <poc@pocnet.net> for
 133         helping me find this bug.
 134
 135 4.      Fixed the treatment for an interrupt signal when dump access
 136         the remote tape through RSH. Thanks to Christian Weisgerber
 137         <naddy@mips.rhein-neckar.de> for providing the patch.
 138
 139 5.      Fixed a bug which was causing dump/restore to display
 140         garbage characters instead of the remote host name.
 141
 142 Changes between versions 0.4b11 and 0.4b12 (released January 8, 2000)
 143 =====================================================================
 144
 145 1.      Small fix in the dump man page. Thanks to Thorsten Kukuk
 146         <kukuk@suse.de> for submitting the patch.
 147
 148 2.      Fix for the exit code when using the size estimate option of
 149         dump. Thanks to Matti Taskinen <mkt@rni.helsinki.fi> for
 150         submitting the patch.
 151
 152 3.      Handle EINTR in atomical reads/writes in dump, which was causing
 153         dump to fail on some systems. Thanks to Eric Jergensen
 154         <eric@dvns.com> for reporting the bug and submitting the patch.
 155
 156 4.      Handle more than 16 characters for the device names in dumpdates.
 157         (up to 255 now). Thanks to Rainer Clasen <bj@ncc.cicely.de> for
 158         tracking down the problem and proposing the solution.
 159
 160 5.      Fixed a bug in dump which prevented the creation of the
 161         dumpdates file when doing a 0-level dump without already
 162         having a dumpdates file. Thanks to Patrik Schindler
 163         <poc@pocnet.net> for reporting the bug.
 164
 165 6.      Changed the way dump 'S' flag reports the size estimate
 166         from number of blocks into bytes (making it compatible
 167         with the Solaris version, and simplifying things for
 168         amanda users). Thanks to Jason L Tibbitts III
 169         <tibbs@math.uh.edu> for reporting the bug.
 170
 171 7.      Fixed a compatibility problem in linux/alpha dump tape format.
 172         Now the linux/alpha dump are (again) compatible with the
 173         other dump formats. But this breaks compatibility with
 174         older dumps made on alpha. Thanks to Mike Tibor
 175         <tibor@lib.uaa.alaska.edu> for helping me in finding this bug.
 176
 177 Changes between versions 0.4b10 and 0.4b11 (released December 5, 1999)
 178 ======================================================================
 179
 180 1.      Added a '--enable-kerberos' to configure.
 181
 182 2.      Added a 'S' option to dump which determines the amount of space
 183         that is needed to perform the dump without actually doing it, similar
 184         to the Sun's ufsdump 'S' option. Patch contributed by Rob Cermak
 185         <cermak@ahab.rutgers.edu>.
 186
 187 3.      Added a 'M' multi-volume option to dump and restore which enables
 188         dumping to multiple files (useful when dumping to an ext2
 189         partition to make several dump files in order to bypass the 2GB
 190         file size limitation). The 'f' argument is treated as a prefix and
 191         the output files will be named <prefix>001, <prefix>002 etc. With
 192         the 'M' flag, restore automatically selects the right file without
 193         asking to enter a new tape each time.
 194
 195 4.      Fixed a memory leak which was causing dump to grow very big
 196         (270MB when dumping a 10GB filesystem...). Thanks to Jason
 197         Fearon <jasonf@netrider.org.au> for reporting the bug.
 198
 199 Changes between versions 0.4b9 and 0.4b10 (released November 21, 1999)
 200 ======================================================================
 201
 202 1.      Make configure test if the system glob routines support
 203         extended syntax (ALTDIRFUNC). If not, use the internal glob
 204         routines instead of system ones. Thanks to Bernhard Sadlowski
 205         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug
 206         and helping me resolve this and other minor libc5 compiling
 207         glitches.
 208
 209 2.      Fix a problem when dumping a ext2fs with the 'filetype'
 210         feature enabled. Thanks to Patrick J. LoPresti
 211         <patl@cag.lcs.mit.edu> for reporting the bug and to
 212         Theodore Y. Ts'o <tytso@mit.edu> for providing the patch.
 213
 214 3.      Made the nodump flag work on directories. A directory which
 215         has the nodump flag gets never dumped, regardless of its
 216         contents.
 217
 218 4.      Integrate a patch from Jeremy Fitzhardinge <jeremy@goop.org>
 219         which allows dump on an active ext3 filesystem. However, this
 220         is a "quick and dirty" patch which enables backup of an ext3
 221         filesystem through the ext2 compatibility (by ignoring the
 222         NEEDS_RECOVERY bit). The journal file is not recognized and
 223         it is dumped (it should not).
 224
 225 5.      Test the superblock compatibility flags when dumping, in order
 226         to be sure that we know how to deal with specific features.
 227
 228 Changes between versions 0.4b8 and 0.4b9 (released November 5, 1999)
 229 ====================================================================
 230
 231 1.      Use lchown instead of chown, fixing a possible security problem
 232         when restoring symlinks (a malicious user could use this
 233         to deliberately corrupt the ownership of important system files).
 234         Thanks to Chris Siebenmann <cks@utcc.utoronto.ca> for detecting
 235         this and providing the patch.
 236
 237 Changes between versions 0.4b7 and 0.4b8 (released November 3, 1999)
 238 ====================================================================
 239
 240 1.      Put dump sources under CVS, added Id tags in all files so
 241         one can use 'ident' on binary files.
 242
 243 2.      Added the dump/restore version in the usage text so one can
 244         easily verify the version he is using.
 245
 246 3.      Small patch from Nuno Oliveira <nuno@eq.uc.pt> which fixes
 247         a va_start/va_end problem on linux-ppc (always call va_start
 248         va_end in pairs each time we use a vararg function).
 249
 250 4.      Added again the DT_* constants because old libc does not
 251         contain them :(. Thanks to Eric Maisonobe <virnet@nat.fr>
 252         for submitting the bug report.
 253
 254 5.      Use ext2fs_llseek instead of llseek. With recent e2fsprogs
 255         this should enable dumping big (huge) filesystems.
 256
 257 6.      Added the RSH environment variable in order to be able to
 258         use a rsh replacement like ssh when doing remote backups (and
 259         bypass the security limitations of rcmd). Now you can do remote
 260         backups without being root (or making dump setuid root).
 261
 262 7.      Modified again the way dumpdates works. For incremental dumps,
 263         we need to read dumpdates even if we are not using 'u' option.
 264         Thanks to Bdale Garbee <bdale@gag.com> for his ideas on how
 265         this should work.
 266
 267 Changes between versions 0.4b6 and 0.4b7 (released October 8, 1999)
 268 ===================================================================
 269
 270 1.      Removed the 'k' flag from the restore 'about' text if kerberos
 271         was not compiled in.
 272
 273 2.      Prototyped (f)setflags from e2fsprogs and corrected the calls
 274         to them (fsetflags takes a char*, setflags an open fd!).
 275
 276 3.      (f)setflags is called only if the flags aren't empty. If the
 277         file is a special file, a warning is printed, because changing
 278         flags implies opening the device. Normally, a special file
 279         should not have any flag... (Debian bug #29775, patch provided
 280         by Abhijit Dasgupta <abhijit@ans.net>).
 281
 282 4.      Made possible to dump a file system not mentioned in /etc/fstab.
 283         (Debian bug #11904, patch provided by Eirik Fuller <eirik@netcom.com>).
 284
 285 5.      Changed the default behaviour to not create dumpdates
 286         unless 'u' option is specified. Removed the old "debian-patch"
 287         which provided the same thing. (Debian bug #38136, #33818).
 288
 289 6.      Removed all those dump*announce, since they were getting old...
 290
 291 7.      Added warning messages if dumpdates does not exist and
 292         when an inferior level dump does not exist (except for a level 0
 293         dump).
 294
 295 8.      Debugged the glob calls in interactive mode: restore used a
 296         dirent struct which was different from the /usr/include/dirent.h
 297         one (this used to work, is it a glibc2 change?), so none of the
 298         compat glob (which used /usr/include/dirent.h) or the system glob
 299         worked. Restore use now the system dirent (and the system
 300         DT_* constants), which are compatible with BSD ones.
 301
 302 9.      Added a configure flag (--with-dumpdatespath) to specify
 303         the location of dumpdates file. By default, it is
 304         /etc/dumpdates.
 305
 306 10.     Added the "AUTHOR" and "AVAILABILITY" sections and
 307         included the current date/version in man pages.
 308
 309 11.     Corrected the estimation of remaining time when
 310         the operator doesn't change the tapes quickly enough. This
 311         was an old bug, I thought I corrected it, and discovered
 312         that in fact it was corrected in two different places, so
 313         the results canceled each other...
 314
 315 Changes between versions 0.4b5 and 0.4b6 (released October 1, 1999)
 316 ===================================================================
 317
 318 1.      Integrated multiple patches from RedHat, Debian and SuSE:
 319
 320         - tweak dump/itime.c to not try to read dumpdates if the 'u' option
 321           isn't specified.
 322         - several fixes in the man pages.
 323         - update the default tape device to /dev/st0.
 324         - many updates for Linux Alpha (byte ordering, size_t etc).
 325         - buffer overruns.
 326         - use environment variable for TMPDIR (instead of /tmp).
 327         - use sigjmp_buf instead of jmp_buf (RedHat bug #3260).
 328         - workaround egcs bug (RedHat bugs #4281 and #2989).
 329         - wire $(OPT) throughout Makefile's.
 330
 331 2.      Upgrade the dump revision to 1, making possible to dump filesystems
 332         made with e2fsprogs-1.15 or newer. Nothing seems to break...
 333
 334 3.      Fix some compile warnings, prototype all functions.
 335
 336 4.      Use glibc err/glob instead of internal compatibility
 337         routines (only if available).
 338
 339 5.      Fix a compile error on Linux 2.2.7 / libc5 (5.4.44) (patch provided
 340         by Bernhard Sadlowski <sadlowsk@mathematik.uni-bielefeld.de>).
 341
 342 Changes between versions 0.4b4 and 0.4b5 (released September 22, 1999)
 343 ======================================================================
 344
 345 1.      Integrated the changes from FreeBSD-3.1-RELEASE
 346         (mostly bug fixes, buffer overruns, dump has now an "automatic
 347         tape length calculation" flag, dump/restore can use kerberos now
 348         (this is NOT tested), use environment variables for TAPE and
 349         RMT etc.).
 350
 351 2.      Integrated three RedHat patches ("glibc", "kernel" and "bread" patches)
 352
 353 3.      Corrected a bug in restore when using 'C' option with multi-volumes
 354         tapes (files splited accros two tapes give "size changed" errors
 355         when comparing).
 356
 357 4.      Corrected the long standing bug when dumping multiple tapes.
 358         This works for me, needs further testing.
 359
 360 Changes between versions 0.4b3 and 0.4b4 (released January 17, 1997)
 361 ====================================================================
 362
 363 1.      Dump now runs correctly on kernels 2.1.x
 364         Fix made by Gerald Peters <gapeters@worldnet.att.net>
 365
 366 Changes between versions 0.4b2 and 0.4b3
 367 ========================================
 368
 369 1.      Use realpath() if available
 370
 371 2.      Report statistics
 372
 373 Changes between versions 0.4b1 and 0.4b2
 374 ========================================
 375
 376 1.      Fixed the bug fix from Greg Lutz (I had made a mistake when integrating
 377         the patch)
 378
 379 2.      Fixed restore to make it able to read FreeBSD 2.x dumps again
 380
 381 3.      Fixed configure.in to correctly handle --enable-rmt
 382
 383 Changes between versions 0.3 and 0.4b1
 384 ======================================
 385
 386 1.      Integrated the changes from 4.4BSD-Lite2
 387
 388 2.      Integrated the patches from Debian and Red Hat
 389
 390 3.      Portability changes: use the __u32, __u16, __s32, and __s16 types
 391
 392 4.      Changed dump to use the Ext2fs library to get block addresses.  This
 393         should solve the endianness problem on SparcLinux.
 394
 395 5.      Created a configure.in file (shamelessly stolen from the e2fsprogs
 396         distribution's one) to use autoconf
 397
 398 6.      Fixed a few minor bugs
 399
 400 Changes between versions 0.2e and 0.2f
 401 ======================================
 402
 403 1.      Added the creation of named pipes (fifos) in restore.
 404
 405 2.      Added the -N flag in the restore manual page.
 406
 407 3.      Added the file kernel.patch which contains the llseek() optimization
 408         patch for 1.2.x kernels.
 409
 410 4.      Fixed a bug in the restoration of symbolic links: owner and group were
 411         not restored.
 412
 413 5.      Integrated some changes from FreeBSD 2.2.
 414
 415 6.      Added a call to ftruncate() after restoring each file to restore
 416         correctly files ending by a hole.
 417
 418 Changes between versions 0.2d and 0.2e
 419 ======================================
 420
 421 1.      Fixed a bug in the "set owner/mode" process.  Every file was restored
 422         with owner = root (0) and group = root/wheel/whatever (0).
 423
 424 Changes between versions 0.2c and 0.2d
 425 ======================================
 426
 427 1.      Dump is now able to backup 2GB+ filesystems.
 428
 429 2.      Dump and restore can now be linked as static binaries.
 430
 431 Changes between versions 0.2b and 0.2c
 432 ======================================
 433
 434 1.      Fixed a bug when dumping ``slow'' (i.e. normal) symbolic links.
 435
 436 Changes between versions 0.2a and 0.2b
 437 ======================================
 438
 439 1.      Really fixed the bug that I should have corrected in 0.2a.
 440
 441 2.      Enabled optimization again.
 442
 443 Changes between versions 0.2 and 0.2a
 444 =====================================
 445
 446 1.      Disabled the optimization during compilation.
 447
 448 Changes between versions 0.1 and 0.2
 449 ====================================
 450
 451 1.      Fixed a bug in fstab.c which caused a null pointer to be stored in
 452         the fs_type field (actually, I modified the file fstab.c to make it
 453         use the mntent functions).
 454
 455 2.      Dump and restore now use a 4.3 BSD compatible dump format.  Backups
 456         made by dump should be readable by the BSD restore and backups made
 457         by the BSD dump should be readable by restore.  Unfortunately, this
 458         means that the dump format has changed between version 0.1 and version
 459         0.2 :-(
 460
 461 3.      Dump is now able to backup a subtree, it is no longer limited to whole
 462         filesystems like the BSD version.
 463
 464 4.      Dump now uses ext2_llseek() so it is able to backup filesystems bigger
 465         than 2 GB.
 466
 467 Changes between versions 0.0 and 0.1
 468 ====================================
 469
 470 1.      Now create links rdump and rrestore during the `make install' step.
 471
 472 2.      Linux port specific bugs added to the manual pages
 473
 474 3.      Incorrect estimation of the number of tapes blocks fixed when doing
 475         incremental backups.
 476
 477 4.      Better ls-like format in restore in interactive mode.