CHANGES

   1 $Id: CHANGES,v 1.48 2000/03/02 13:33:00 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 Changes between versions 0.4b14 and 0.4b15 (released March 2, 2000)
  10 ===================================================================
  11
  12 1.      Added a prompt command in interactive restore mode. Thanks
  13         to Andreas Dilger <adilger@home.com> for the patch.
  14
  15 2.      Fixed a buffer overflow problem in dump (caused by
  16         not checking the size of the filesystem parameter).
  17         Thanks to Kim Yong-jun <loveyou@hackerslab.org> for
  18         reporting this on Bugtraq (and to several dump users
  19         who forwarded me his mail).
  20
  21 3.      Added the '-F script' option to dump in order to
  22         launch a script at the end of each tape (to be used
  23         with a tape changer, or to notify the sysadmin by
  24         pager etc.).
  25
  26 4.      Fixed a bug in restore compare code caused by the changes
  27         I made in 0.4b14.
  28
  29 5.      Fixed the treatment of options using the old BSD syntax
  30         in both dump and restore.
  31
  32 Changes between versions 0.4b13 and 0.4b14 (released February 10, 2000)
  33 =======================================================================
  34
  35 1.      Fixed a bug in dump which may have caused invalid deleted
  36         directories to be dumped out if they were deleted after the
  37         mapping pass. This could occure on active filesystem and lead
  38         to heap corruption (causing dump malfunction in many possible ways).
  39         Thanks to Jan Sanislo <oystr@cs.washington.edu> for finding this
  40         bug and submitting the patch.
  41
  42 2.      Fixed the handling of the filesystem parameter in dump. A
  43         '/mnt/disk' parameter caused the disk contents to be dumped,
  44         but a '/mnt/disk/' parameter caused the mountpoint directory
  45         to be dumped (generally an empty directory).
  46
  47 3.      Improved the output of dump in order to tell which directory
  48         it is currently dumping (when dumping a subtree).
  49
  50 4.      Added the '-e' exclude inode option to dump. Thanks to
  51         Isaac Chuang <ike@isl.stanford.edu> for contributing with the patch.
  52
  53 5.      Added a REPORTING-BUGS file in order to provide a guide
  54         on how to correctly report a bug in dump/restore.
  55
  56 6.      Fixed a restore problem when restoring a hard link to an inode
  57         having the immutable or append-only attribute set. Thanks to
  58         Ambrose Li <acli@mingpaoxpress.com> for submitting the patch.
  59
  60 7.      Fixed a compatibility problem between dumps made on little
  61         endian machines (the format was correct) and big endian
  62         machines (the format was incorrect). This fix break the
  63         compatibility with the older dumps made on big endian
  64         machines (sparc, m86k, ppc etc). For the first time in
  65         linux dump's history (I believe), the dumps made by *BSD,
  66         Linux/alpha, Linux/sparc and Linux/x86 are compatible,
  67         so interchangeable. Thanks to Rob Cermak
  68         <cermak@ahab.rutgers.edu> for submitting the bug and
  69         helping me test the fix.
  70
  71 8.      Fixed the way dump reports the remaining percent/time, if
  72         the number of blocks actually dumped exceeds the estimated
  73         number of blocks. Thanks to Jean-Paul van der Jagt
  74         <jeanpaul@dutepp0.et.tudelft.nl> for reporting the bug.
  75
  76 Changes between versions 0.4b12 and 0.4b13 (released January 21, 2000)
  77 ======================================================================
  78
  79 1.      Small Y2K fix in the man pages :). Thanks to Bernhard Sadlowski
  80         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug.
  81
  82 2.      Removed the requirement to build the RPM as root from the
  83         spec file. Thanks to Christian Weisgerber
  84         <naddy@mips.rhein-neckar.de> for submitting this.
  85
  86 3.      Fixed a bug in dump related to the 'filetype' feature of ext2fs,
  87         causing dump to block when dumping really huge filesystems.
  88         Many thanks to Patrik Schindler <poc@pocnet.net> for
  89         helping me find this bug.
  90
  91 4.      Fixed the treatment for an interrupt signal when dump access
  92         the remote tape through RSH. Thanks to Christian Weisgerber
  93         <naddy@mips.rhein-neckar.de> for providing the patch.
  94
  95 5.      Fixed a bug which was causing dump/restore to display
  96         garbage characters instead of the remote host name.
  97
  98 Changes between versions 0.4b11 and 0.4b12 (released January 8, 2000)
  99 =====================================================================
 100
 101 1.      Small fix in the dump man page. Thanks to Thorsten Kukuk
 102         <kukuk@suse.de> for submitting the patch.
 103
 104 2.      Fix for the exit code when using the size estimate option of
 105         dump. Thanks to Matti Taskinen <mkt@rni.helsinki.fi> for
 106         submitting the patch.
 107
 108 3.      Handle EINTR in atomical reads/writes in dump, which was causing
 109         dump to fail on some systems. Thanks to Eric Jergensen
 110         <eric@dvns.com> for reporting the bug and submitting the patch.
 111
 112 4.      Handle more than 16 characters for the device names in dumpdates.
 113         (up to 255 now). Thanks to Rainer Clasen <bj@ncc.cicely.de> for
 114         tracking down the problem and proposing the solution.
 115
 116 5.      Fixed a bug in dump which prevented the creation of the
 117         dumpdates file when doing a 0-level dump without already
 118         having a dumpdates file. Thanks to Patrik Schindler
 119         <poc@pocnet.net> for reporting the bug.
 120
 121 6.      Changed the way dump 'S' flag reports the size estimate
 122         from number of blocks into bytes (making it compatible
 123         with the Solaris version, and simplifying things for
 124         amanda users). Thanks to Jason L Tibbitts III
 125         <tibbs@math.uh.edu> for reporting the bug.
 126
 127 7.      Fixed a compatibility problem in linux/alpha dump tape format.
 128         Now the linux/alpha dump are (again) compatible with the
 129         other dump formats. But this breaks compatibility with
 130         older dumps made on alpha. Thanks to Mike Tibor
 131         <tibor@lib.uaa.alaska.edu> for helping me in finding this bug.
 132
 133 Changes between versions 0.4b10 and 0.4b11 (released December 5, 1999)
 134 ======================================================================
 135
 136 1.      Added a '--enable-kerberos' to configure.
 137
 138 2.      Added a 'S' option to dump which determines the amount of space
 139         that is needed to perform the dump without actually doing it, similar
 140         to the Sun's ufsdump 'S' option. Patch contributed by Rob Cermak
 141         <cermak@ahab.rutgers.edu>.
 142
 143 3.      Added a 'M' multi-volume option to dump and restore which enables
 144         dumping to multiple files (useful when dumping to an ext2
 145         partition to make several dump files in order to bypass the 2GB
 146         file size limitation). The 'f' argument is treated as a prefix and
 147         the output files will be named <prefix>001, <prefix>002 etc. With
 148         the 'M' flag, restore automatically selects the right file without
 149         asking to enter a new tape each time.
 150
 151 4.      Fixed a memory leak which was causing dump to grow very big
 152         (270MB when dumping a 10GB filesystem...). Thanks to Jason
 153         Fearon <jasonf@netrider.org.au> for reporting the bug.
 154
 155 Changes between versions 0.4b9 and 0.4b10 (released November 21, 1999)
 156 ======================================================================
 157
 158 1.      Make configure test if the system glob routines support
 159         extended syntax (ALTDIRFUNC). If not, use the internal glob
 160         routines instead of system ones. Thanks to Bernhard Sadlowski
 161         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug
 162         and helping me resolve this and other minor libc5 compiling
 163         glitches.
 164
 165 2.      Fix a problem when dumping a ext2fs with the 'filetype'
 166         feature enabled. Thanks to Patrick J. LoPresti
 167         <patl@cag.lcs.mit.edu> for reporting the bug and to
 168         Theodore Y. Ts'o <tytso@mit.edu> for providing the patch.
 169
 170 3.      Made the nodump flag work on directories. A directory which
 171         has the nodump flag gets never dumped, regardless of its
 172         contents.
 173
 174 4.      Integrate a patch from Jeremy Fitzhardinge <jeremy@goop.org>
 175         which allows dump on an active ext3 filesystem. However, this
 176         is a "quick and dirty" patch which enables backup of an ext3
 177         filesystem through the ext2 compatibility (by ignoring the
 178         NEEDS_RECOVERY bit). The journal file is not recognized and
 179         it is dumped (it should not).
 180
 181 5.      Test the superblock compatibility flags when dumping, in order
 182         to be sure that we know how to deal with specific features.
 183
 184 Changes between versions 0.4b8 and 0.4b9 (released November 5, 1999)
 185 ====================================================================
 186
 187 1.      Use lchown instead of chown, fixing a possible security problem
 188         when restoring symlinks (a malicious user could use this
 189         to deliberately corrupt the ownership of important system files).
 190         Thanks to Chris Siebenmann <cks@utcc.utoronto.ca> for detecting
 191         this and providing the patch.
 192
 193 Changes between versions 0.4b7 and 0.4b8 (released November 3, 1999)
 194 ====================================================================
 195
 196 1.      Put dump sources under CVS, added Id tags in all files so
 197         one can use 'ident' on binary files.
 198
 199 2.      Added the dump/restore version in the usage text so one can
 200         easily verify the version he is using.
 201
 202 3.      Small patch from Nuno Oliveira <nuno@eq.uc.pt> which fixes
 203         a va_start/va_end problem on linux-ppc (always call va_start
 204         va_end in pairs each time we use a vararg function).
 205
 206 4.      Added again the DT_* constants because old libc does not
 207         contain them :(. Thanks to Eric Maisonobe <virnet@nat.fr>
 208         for submitting the bug report.
 209
 210 5.      Use ext2fs_llseek instead of llseek. With recent e2fsprogs
 211         this should enable dumping big (huge) filesystems.
 212
 213 6.      Added the RSH environment variable in order to be able to
 214         use a rsh replacement like ssh when doing remote backups (and
 215         bypass the security limitations of rcmd). Now you can do remote
 216         backups without being root (or making dump setuid root).
 217
 218 7.      Modified again the way dumpdates works. For incremental dumps,
 219         we need to read dumpdates even if we are not using 'u' option.
 220         Thanks to Bdale Garbee <bdale@gag.com> for his ideas on how
 221         this should work.
 222
 223 Changes between versions 0.4b6 and 0.4b7 (released October 8, 1999)
 224 ===================================================================
 225
 226 1.      Removed the 'k' flag from the restore 'about' text if kerberos
 227         was not compiled in.
 228
 229 2.      Prototyped (f)setflags from e2fsprogs and corrected the calls
 230         to them (fsetflags takes a char*, setflags an open fd!).
 231
 232 3.      (f)setflags is called only if the flags aren't empty. If the
 233         file is a special file, a warning is printed, because changing
 234         flags implies opening the device. Normally, a special file
 235         should not have any flag... (Debian bug #29775, patch provided
 236         by Abhijit Dasgupta <abhijit@ans.net>).
 237
 238 4.      Made possible to dump a file system not mentioned in /etc/fstab.
 239         (Debian bug #11904, patch provided by Eirik Fuller <eirik@netcom.com>).
 240
 241 5.      Changed the default behaviour to not create dumpdates
 242         unless 'u' option is specified. Removed the old "debian-patch"
 243         which provided the same thing. (Debian bug #38136, #33818).
 244
 245 6.      Removed all those dump*announce, since they were getting old...
 246
 247 7.      Added warning messages if dumpdates does not exist and
 248         when an inferior level dump does not exist (except for a level 0
 249         dump).
 250
 251 8.      Debugged the glob calls in interactive mode: restore used a
 252         dirent struct which was different from the /usr/include/dirent.h
 253         one (this used to work, is it a glibc2 change?), so none of the
 254         compat glob (which used /usr/include/dirent.h) or the system glob
 255         worked. Restore use now the system dirent (and the system
 256         DT_* constants), which are compatible with BSD ones.
 257
 258 9.      Added a configure flag (--with-dumpdatespath) to specify
 259         the location of dumpdates file. By default, it is
 260         /etc/dumpdates.
 261
 262 10.     Added the "AUTHOR" and "AVAILABILITY" sections and
 263         included the current date/version in man pages.
 264
 265 11.     Corrected the estimation of remaining time when
 266         the operator doesn't change the tapes quickly enough. This
 267         was an old bug, I thought I corrected it, and discovered
 268         that in fact it was corrected in two different places, so
 269         the results canceled each other...
 270
 271 Changes between versions 0.4b5 and 0.4b6 (released October 1, 1999)
 272 ===================================================================
 273
 274 1.      Integrated multiple patches from RedHat, Debian and SuSE:
 275
 276         - tweak dump/itime.c to not try to read dumpdates if the 'u' option
 277           isn't specified.
 278         - several fixes in the man pages.
 279         - update the default tape device to /dev/st0.
 280         - many updates for Linux Alpha (byte ordering, size_t etc).
 281         - buffer overruns.
 282         - use environment variable for TMPDIR (instead of /tmp).
 283         - use sigjmp_buf instead of jmp_buf (RedHat bug #3260).
 284         - workaround egcs bug (RedHat bugs #4281 and #2989).
 285         - wire $(OPT) throughout Makefile's.
 286
 287 2.      Upgrade the dump revision to 1, making possible to dump filesystems
 288         made with e2fsprogs-1.15 or newer. Nothing seems to break...
 289
 290 3.      Fix some compile warnings, prototype all functions.
 291
 292 4.      Use glibc err/glob instead of internal compatibility
 293         routines (only if available).
 294
 295 5.      Fix a compile error on Linux 2.2.7 / libc5 (5.4.44) (patch provided
 296         by Bernhard Sadlowski <sadlowsk@mathematik.uni-bielefeld.de>).
 297
 298 Changes between versions 0.4b4 and 0.4b5 (released September 22, 1999)
 299 ======================================================================
 300
 301 1.      Integrated the changes from FreeBSD-3.1-RELEASE
 302         (mostly bug fixes, buffer overruns, dump has now an "automatic
 303         tape length calculation" flag, dump/restore can use kerberos now
 304         (this is NOT tested), use environment variables for TAPE and
 305         RMT etc.).
 306
 307 2.      Integrated three RedHat patches ("glibc", "kernel" and "bread" patches)
 308
 309 3.      Corrected a bug in restore when using 'C' option with multi-volumes
 310         tapes (files splited accros two tapes give "size changed" errors
 311         when comparing).
 312
 313 4.      Corrected the long standing bug when dumping multiple tapes.
 314         This works for me, needs further testing.
 315
 316 Changes between versions 0.4b3 and 0.4b4 (released January 17, 1997)
 317 ====================================================================
 318
 319 1.      Dump now runs correctly on kernels 2.1.x
 320         Fix made by Gerald Peters <gapeters@worldnet.att.net>
 321
 322 Changes between versions 0.4b2 and 0.4b3
 323 ========================================
 324
 325 1.      Use realpath() if available
 326
 327 2.      Report statistics
 328
 329 Changes between versions 0.4b1 and 0.4b2
 330 ========================================
 331
 332 1.      Fixed the bug fix from Greg Lutz (I had made a mistake when integrating
 333         the patch)
 334
 335 2.      Fixed restore to make it able to read FreeBSD 2.x dumps again
 336
 337 3.      Fixed configure.in to correctly handle --enable-rmt
 338
 339 Changes between versions 0.3 and 0.4b1
 340 ======================================
 341
 342 1.      Integrated the changes from 4.4BSD-Lite2
 343
 344 2.      Integrated the patches from Debian and Red Hat
 345
 346 3.      Portability changes: use the __u32, __u16, __s32, and __s16 types
 347
 348 4.      Changed dump to use the Ext2fs library to get block addresses.  This
 349         should solve the endianness problem on SparcLinux.
 350
 351 5.      Created a configure.in file (shamelessly stolen from the e2fsprogs
 352         distribution's one) to use autoconf
 353
 354 6.      Fixed a few minor bugs
 355
 356 Changes between versions 0.2e and 0.2f
 357 ======================================
 358
 359 1.      Added the creation of named pipes (fifos) in restore.
 360
 361 2.      Added the -N flag in the restore manual page.
 362
 363 3.      Added the file kernel.patch which contains the llseek() optimization
 364         patch for 1.2.x kernels.
 365
 366 4.      Fixed a bug in the restoration of symbolic links: owner and group were
 367         not restored.
 368
 369 5.      Integrated some changes from FreeBSD 2.2.
 370
 371 6.      Added a call to ftruncate() after restoring each file to restore
 372         correctly files ending by a hole.
 373
 374 Changes between versions 0.2d and 0.2e
 375 ======================================
 376
 377 1.      Fixed a bug in the "set owner/mode" process.  Every file was restored
 378         with owner = root (0) and group = root/wheel/whatever (0).
 379
 380 Changes between versions 0.2c and 0.2d
 381 ======================================
 382
 383 1.      Dump is now able to backup 2GB+ filesystems.
 384
 385 2.      Dump and restore can now be linked as static binaries.
 386
 387 Changes between versions 0.2b and 0.2c
 388 ======================================
 389
 390 1.      Fixed a bug when dumping ``slow'' (i.e. normal) symbolic links.
 391
 392 Changes between versions 0.2a and 0.2b
 393 ======================================
 394
 395 1.      Really fixed the bug that I should have corrected in 0.2a.
 396
 397 2.      Enabled optimization again.
 398
 399 Changes between versions 0.2 and 0.2a
 400 =====================================
 401
 402 1.      Disabled the optimization during compilation.
 403
 404 Changes between versions 0.1 and 0.2
 405 ====================================
 406
 407 1.      Fixed a bug in fstab.c which caused a null pointer to be stored in
 408         the fs_type field (actually, I modified the file fstab.c to make it
 409         use the mntent functions).
 410
 411 2.      Dump and restore now use a 4.3 BSD compatible dump format.  Backups
 412         made by dump should be readable by the BSD restore and backups made
 413         by the BSD dump should be readable by restore.  Unfortunately, this
 414         means that the dump format has changed between version 0.1 and version
 415         0.2 :-(
 416
 417 3.      Dump is now able to backup a subtree, it is no longer limited to whole
 418         filesystems like the BSD version.
 419
 420 4.      Dump now uses ext2_llseek() so it is able to backup filesystems bigger
 421         than 2 GB.
 422
 423 Changes between versions 0.0 and 0.1
 424 ====================================
 425
 426 1.      Now create links rdump and rrestore during the `make install' step.
 427
 428 2.      Linux port specific bugs added to the manual pages
 429
 430 3.      Incorrect estimation of the number of tapes blocks fixed when doing
 431         incremental backups.
 432
 433 4.      Better ls-like format in restore in interactive mode.