CHANGES

   1 $Id: CHANGES,v 1.43 2000/02/10 10:22:04 stelian Exp $
   2
   3 Changes between versions 0.4b13 and 0.4b14 (released February 10, 2000)
   4 =======================================================================
   5
   6 1.      Fixed a bug in dump which may have caused invalid deleted
   7         directories to be dumped out if they were deleted after the
   8         mapping pass. This could occure on active filesystem and lead
   9         to heap corruption (causing dump malfunction in many possible ways).
  10         Thanks to Jan Sanislo <oystr@cs.washington.edu> for finding this
  11         bug and submitting the patch.
  12
  13 2.      Fixed the handling of the filesystem parameter in dump. A
  14         '/mnt/disk' parameter caused the disk contents to be dumped,
  15         but a '/mnt/disk/' parameter caused the mountpoint directory
  16         to be dumped (generally an empty directory).
  17
  18 3.      Improved the output of dump in order to tell which directory
  19         it is currently dumping (when dumping a subtree).
  20
  21 4.      Added the '-e' exclude inode option to dump. Thanks to
  22         Isaac Chuang <ike@isl.stanford.edu> for contributing with the patch.
  23
  24 5.      Added a REPORTING-BUGS file in order to provide a guide
  25         on how to correctly report a bug in dump/restore.
  26
  27 6.      Fixed a restore problem when restoring a hard link to an inode
  28         having the immutable or append-only attribute set. Thanks to
  29         Ambrose Li <acli@mingpaoxpress.com> for submitting the patch.
  30
  31 7.      Fixed a compatibility problem between dumps made on little
  32         endian machines (the format was correct) and big endian
  33         machines (the format was incorrect). This fix break the
  34         compatibility with the older dumps made on big endian
  35         machines (sparc, m86k, ppc etc). For the first time in
  36         linux dump's history (I believe), the dumps made by *BSD,
  37         Linux/alpha, Linux/sparc and Linux/x86 are compatible,
  38         so interchangeable. Thanks to Rob Cermak
  39         <cermak@ahab.rutgers.edu> for submitting the bug and
  40         helping me test the fix.
  41
  42 8.      Fixed the way dump reports the remaining percent/time, if
  43         the number of blocks actually dumped exceeds the estimated
  44         number of blocks. Thanks to Jean-Paul van der Jagt
  45         <jeanpaul@dutepp0.et.tudelft.nl> for reporting the bug.
  46
  47 Changes between versions 0.4b12 and 0.4b13 (released January 21, 2000)
  48 ======================================================================
  49
  50 1.      Small Y2K fix in the man pages :). Thanks to Bernhard Sadlowski
  51         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug.
  52
  53 2.      Removed the requirement to build the RPM as root from the
  54         spec file. Thanks to Christian Weisgerber
  55         <naddy@mips.rhein-neckar.de> for submitting this.
  56
  57 3.      Fixed a bug in dump related to the 'filetype' feature of ext2fs,
  58         causing dump to block when dumping really huge filesystems.
  59         Many thanks to Patrik Schindler <poc@pocnet.net> for
  60         helping me find this bug.
  61
  62 4.      Fixed the treatment for an interrupt signal when dump access
  63         the remote tape through RSH. Thanks to Christian Weisgerber
  64         <naddy@mips.rhein-neckar.de> for providing the patch.
  65
  66 5.      Fixed a bug which was causing dump/restore to display
  67         garbage characters instead of the remote host name.
  68
  69 Changes between versions 0.4b11 and 0.4b12 (released January 8, 2000)
  70 =====================================================================
  71
  72 1.      Small fix in the dump man page. Thanks to Thorsten Kukuk
  73         <kukuk@suse.de> for submitting the patch.
  74
  75 2.      Fix for the exit code when using the size estimate option of
  76         dump. Thanks to Matti Taskinen <mkt@rni.helsinki.fi> for
  77         submitting the patch.
  78
  79 3.      Handle EINTR in atomical reads/writes in dump, which was causing
  80         dump to fail on some systems. Thanks to Eric Jergensen
  81         <eric@dvns.com> for reporting the bug and submitting the patch.
  82
  83 4.      Handle more than 16 characters for the device names in dumpdates.
  84         (up to 255 now). Thanks to Rainer Clasen <bj@ncc.cicely.de> for
  85         tracking down the problem and proposing the solution.
  86
  87 5.      Fixed a bug in dump which prevented the creation of the
  88         dumpdates file when doing a 0-level dump without already
  89         having a dumpdates file. Thanks to Patrik Schindler
  90         <poc@pocnet.net> for reporting the bug.
  91
  92 6.      Changed the way dump 'S' flag reports the size estimate
  93         from number of blocks into bytes (making it compatible
  94         with the Solaris version, and simplifying things for
  95         amanda users). Thanks to Jason L Tibbitts III
  96         <tibbs@math.uh.edu> for reporting the bug.
  97
  98 7.      Fixed a compatibility problem in linux/alpha dump tape format.
  99         Now the linux/alpha dump are (again) compatible with the
 100         other dump formats. But this breaks compatibility with
 101         older dumps made on alpha. Thanks to Mike Tibor
 102         <tibor@lib.uaa.alaska.edu> for helping me in finding this bug.
 103
 104 Changes between versions 0.4b10 and 0.4b11 (released December 5, 1999)
 105 ======================================================================
 106
 107 1.      Added a '--enable-kerberos' to configure.
 108
 109 2.      Added a 'S' option to dump which determines the amount of space
 110         that is needed to perform the dump without actually doing it, similar
 111         to the Sun's ufsdump 'S' option. Patch contributed by Rob Cermak
 112         <cermak@ahab.rutgers.edu>.
 113
 114 3.      Added a 'M' multi-volume option to dump and restore which enables
 115         dumping to multiple files (useful when dumping to an ext2
 116         partition to make several dump files in order to bypass the 2GB
 117         file size limitation). The 'f' argument is treated as a prefix and
 118         the output files will be named <prefix>001, <prefix>002 etc. With
 119         the 'M' flag, restore automatically selects the right file without
 120         asking to enter a new tape each time.
 121
 122 4.      Fixed a memory leak which was causing dump to grow very big
 123         (270MB when dumping a 10GB filesystem...). Thanks to Jason
 124         Fearon <jasonf@netrider.org.au> for reporting the bug.
 125
 126 Changes between versions 0.4b9 and 0.4b10 (released November 21, 1999)
 127 ======================================================================
 128
 129 1.      Make configure test if the system glob routines support
 130         extended syntax (ALTDIRFUNC). If not, use the internal glob
 131         routines instead of system ones. Thanks to Bernhard Sadlowski
 132         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug
 133         and helping me resolve this and other minor libc5 compiling
 134         glitches.
 135
 136 2.      Fix a problem when dumping a ext2fs with the 'filetype'
 137         feature enabled. Thanks to Patrick J. LoPresti
 138         <patl@cag.lcs.mit.edu> for reporting the bug and to
 139         Theodore Y. Ts'o <tytso@mit.edu> for providing the patch.
 140
 141 3.      Made the nodump flag work on directories. A directory which
 142         has the nodump flag gets never dumped, regardless of its
 143         contents.
 144
 145 4.      Integrate a patch from Jeremy Fitzhardinge <jeremy@goop.org>
 146         which allows dump on an active ext3 filesystem. However, this
 147         is a "quick and dirty" patch which enables backup of an ext3
 148         filesystem through the ext2 compatibility (by ignoring the
 149         NEEDS_RECOVERY bit). The journal file is not recognized and
 150         it is dumped (it should not).
 151
 152 5.      Test the superblock compatibility flags when dumping, in order
 153         to be sure that we know how to deal with specific features.
 154
 155 Changes between versions 0.4b8 and 0.4b9 (released November 5, 1999)
 156 ====================================================================
 157
 158 1.      Use lchown instead of chown, fixing a possible security problem
 159         when restoring symlinks (a malicious user could use this
 160         to deliberately corrupt the ownership of important system files).
 161         Thanks to Chris Siebenmann <cks@utcc.utoronto.ca> for detecting
 162         this and providing the patch.
 163
 164 Changes between versions 0.4b7 and 0.4b8 (released November 3, 1999)
 165 ====================================================================
 166
 167 1.      Put dump sources under CVS, added Id tags in all files so
 168         one can use 'ident' on binary files.
 169
 170 2.      Added the dump/restore version in the usage text so one can
 171         easily verify the version he is using.
 172
 173 3.      Small patch from Nuno Oliveira <nuno@eq.uc.pt> which fixes
 174         a va_start/va_end problem on linux-ppc (always call va_start
 175         va_end in pairs each time we use a vararg function).
 176
 177 4.      Added again the DT_* constants because old libc does not
 178         contain them :(. Thanks to Eric Maisonobe <virnet@nat.fr>
 179         for submitting the bug report.
 180
 181 5.      Use ext2fs_llseek instead of llseek. With recent e2fsprogs
 182         this should enable dumping big (huge) filesystems.
 183
 184 6.      Added the RSH environment variable in order to be able to
 185         use a rsh replacement like ssh when doing remote backups (and
 186         bypass the security limitations of rcmd). Now you can do remote
 187         backups without being root (or making dump setuid root).
 188
 189 7.      Modified again the way dumpdates works. For incremental dumps,
 190         we need to read dumpdates even if we are not using 'u' option.
 191         Thanks to Bdale Garbee <bdale@gag.com> for his ideas on how
 192         this should work.
 193
 194 Changes between versions 0.4b6 and 0.4b7 (released October 8, 1999)
 195 ===================================================================
 196
 197 1.      Removed the 'k' flag from the restore 'about' text if kerberos
 198         was not compiled in.
 199
 200 2.      Prototyped (f)setflags from e2fsprogs and corrected the calls
 201         to them (fsetflags takes a char*, setflags an open fd!).
 202
 203 3.      (f)setflags is called only if the flags aren't empty. If the
 204         file is a special file, a warning is printed, because changing
 205         flags implies opening the device. Normally, a special file
 206         should not have any flag... (Debian bug #29775, patch provided
 207         by Abhijit Dasgupta <abhijit@ans.net>).
 208
 209 4.      Made possible to dump a file system not mentioned in /etc/fstab.
 210         (Debian bug #11904, patch provided by Eirik Fuller <eirik@netcom.com>).
 211
 212 5.      Changed the default behaviour to not create dumpdates
 213         unless 'u' option is specified. Removed the old "debian-patch"
 214         which provided the same thing. (Debian bug #38136, #33818).
 215
 216 6.      Removed all those dump*announce, since they were getting old...
 217
 218 7.      Added warning messages if dumpdates does not exist and
 219         when an inferior level dump does not exist (except for a level 0
 220         dump).
 221
 222 8.      Debugged the glob calls in interactive mode: restore used a
 223         dirent struct which was different from the /usr/include/dirent.h
 224         one (this used to work, is it a glibc2 change?), so none of the
 225         compat glob (which used /usr/include/dirent.h) or the system glob
 226         worked. Restore use now the system dirent (and the system
 227         DT_* constants), which are compatible with BSD ones.
 228
 229 9.      Added a configure flag (--with-dumpdatespath) to specify
 230         the location of dumpdates file. By default, it is
 231         /etc/dumpdates.
 232
 233 10.     Added the "AUTHOR" and "AVAILABILITY" sections and
 234         included the current date/version in man pages.
 235
 236 11.     Corrected the estimation of remaining time when
 237         the operator doesn't change the tapes quickly enough. This
 238         was an old bug, I thought I corrected it, and discovered
 239         that in fact it was corrected in two different places, so
 240         the results canceled each other...
 241
 242 Changes between versions 0.4b5 and 0.4b6 (released October 1, 1999)
 243 ===================================================================
 244
 245 1.      Integrated multiple patches from RedHat, Debian and SuSE:
 246
 247         - tweak dump/itime.c to not try to read dumpdates if the 'u' option
 248           isn't specified.
 249         - several fixes in the man pages.
 250         - update the default tape device to /dev/st0.
 251         - many updates for Linux Alpha (byte ordering, size_t etc).
 252         - buffer overruns.
 253         - use environment variable for TMPDIR (instead of /tmp).
 254         - use sigjmp_buf instead of jmp_buf (RedHat bug #3260).
 255         - workaround egcs bug (RedHat bugs #4281 and #2989).
 256         - wire $(OPT) throughout Makefile's.
 257
 258 2.      Upgrade the dump revision to 1, making possible to dump filesystems
 259         made with e2fsprogs-1.15 or newer. Nothing seems to break...
 260
 261 3.      Fix some compile warnings, prototype all functions.
 262
 263 4.      Use glibc err/glob instead of internal compatibility
 264         routines (only if available).
 265
 266 5.      Fix a compile error on Linux 2.2.7 / libc5 (5.4.44) (patch provided
 267         by Bernhard Sadlowski <sadlowsk@mathematik.uni-bielefeld.de>).
 268
 269 Changes between versions 0.4b4 and 0.4b5 (released September 22, 1999)
 270 ======================================================================
 271
 272 1.      Integrated the changes from FreeBSD-3.1-RELEASE
 273         (mostly bug fixes, buffer overruns, dump has now an "automatic
 274         tape length calculation" flag, dump/restore can use kerberos now
 275         (this is NOT tested), use environment variables for TAPE and
 276         RMT etc.).
 277
 278 2.      Integrated three RedHat patches ("glibc", "kernel" and "bread" patches)
 279
 280 3.      Corrected a bug in restore when using 'C' option with multi-volumes
 281         tapes (files splited accros two tapes give "size changed" errors
 282         when comparing).
 283
 284 4.      Corrected the long standing bug when dumping multiple tapes.
 285         This works for me, needs further testing.
 286
 287 Changes between versions 0.4b3 and 0.4b4 (released January 17, 1997)
 288 ====================================================================
 289
 290 1.      Dump now runs correctly on kernels 2.1.x
 291         Fix made by Gerald Peters <gapeters@worldnet.att.net>
 292
 293 Changes between versions 0.4b2 and 0.4b3
 294 ========================================
 295
 296 1.      Use realpath() if available
 297
 298 2.      Report statistics
 299
 300 Changes between versions 0.4b1 and 0.4b2
 301 ========================================
 302
 303 1.      Fixed the bug fix from Greg Lutz (I had made a mistake when integrating
 304         the patch)
 305
 306 2.      Fixed restore to make it able to read FreeBSD 2.x dumps again
 307
 308 3.      Fixed configure.in to correctly handle --enable-rmt
 309
 310 Changes between versions 0.3 and 0.4b1
 311 ======================================
 312
 313 1.      Integrated the changes from 4.4BSD-Lite2
 314
 315 2.      Integrated the patches from Debian and Red Hat
 316
 317 3.      Portability changes: use the __u32, __u16, __s32, and __s16 types
 318
 319 4.      Changed dump to use the Ext2fs library to get block addresses.  This
 320         should solve the endianness problem on SparcLinux.
 321
 322 5.      Created a configure.in file (shamelessly stolen from the e2fsprogs
 323         distribution's one) to use autoconf
 324
 325 6.      Fixed a few minor bugs
 326
 327 Changes between versions 0.2e and 0.2f
 328 ======================================
 329
 330 1.      Added the creation of named pipes (fifos) in restore.
 331
 332 2.      Added the -N flag in the restore manual page.
 333
 334 3.      Added the file kernel.patch which contains the llseek() optimization
 335         patch for 1.2.x kernels.
 336
 337 4.      Fixed a bug in the restoration of symbolic links: owner and group were
 338         not restored.
 339
 340 5.      Integrated some changes from FreeBSD 2.2.
 341
 342 6.      Added a call to ftruncate() after restoring each file to restore
 343         correctly files ending by a hole.
 344
 345 Changes between versions 0.2d and 0.2e
 346 ======================================
 347
 348 1.      Fixed a bug in the "set owner/mode" process.  Every file was restored
 349         with owner = root (0) and group = root/wheel/whatever (0).
 350
 351 Changes between versions 0.2c and 0.2d
 352 ======================================
 353
 354 1.      Dump is now able to backup 2GB+ filesystems.
 355
 356 2.      Dump and restore can now be linked as static binaries.
 357
 358 Changes between versions 0.2b and 0.2c
 359 ======================================
 360
 361 1.      Fixed a bug when dumping ``slow'' (i.e. normal) symbolic links.
 362
 363 Changes between versions 0.2a and 0.2b
 364 ======================================
 365
 366 1.      Really fixed the bug that I should have corrected in 0.2a.
 367
 368 2.      Enabled optimization again.
 369
 370 Changes between versions 0.2 and 0.2a
 371 =====================================
 372
 373 1.      Disabled the optimization during compilation.
 374
 375 Changes between versions 0.1 and 0.2
 376 ====================================
 377
 378 1.      Fixed a bug in fstab.c which caused a null pointer to be stored in
 379         the fs_type field (actually, I modified the file fstab.c to make it
 380         use the mntent functions).
 381
 382 2.      Dump and restore now use a 4.3 BSD compatible dump format.  Backups
 383         made by dump should be readable by the BSD restore and backups made
 384         by the BSD dump should be readable by restore.  Unfortunately, this
 385         means that the dump format has changed between version 0.1 and version
 386         0.2 :-(
 387
 388 3.      Dump is now able to backup a subtree, it is no longer limited to whole
 389         filesystems like the BSD version.
 390
 391 4.      Dump now uses ext2_llseek() so it is able to backup filesystems bigger
 392         than 2 GB.
 393
 394 Changes between versions 0.0 and 0.1
 395 ====================================
 396
 397 1.      Now create links rdump and rrestore during the `make install' step.
 398
 399 2.      Linux port specific bugs added to the manual pages
 400
 401 3.      Incorrect estimation of the number of tapes blocks fixed when doing
 402         incremental backups.
 403
 404 4.      Better ls-like format in restore in interactive mode.