CHANGES

   1 $Id: CHANGES,v 1.45 2000/03/01 10:16:05 stelian Exp $
   2
   3 Changes between versions 0.4b14 and 0.4b15 (released ?????????????????)
   4 =======================================================================
   5
   6 1.      Added a prompt command in interactive restore mode. Thanks
   7         to Andreas Dilger <adilger@home.com> for the patch.
   8
   9 2.      Fixed a buffer overflow problem in dump (caused by
  10         not checking the size of the filesystem parameter).
  11         Thanks to Kim Yong-jun <loveyou@hackerslab.org> for
  12         reporting this on Bugtraq (and to several dump users
  13         who forwarded me his mail).
  14
  15 Changes between versions 0.4b13 and 0.4b14 (released February 10, 2000)
  16 =======================================================================
  17
  18 1.      Fixed a bug in dump which may have caused invalid deleted
  19         directories to be dumped out if they were deleted after the
  20         mapping pass. This could occure on active filesystem and lead
  21         to heap corruption (causing dump malfunction in many possible ways).
  22         Thanks to Jan Sanislo <oystr@cs.washington.edu> for finding this
  23         bug and submitting the patch.
  24
  25 2.      Fixed the handling of the filesystem parameter in dump. A
  26         '/mnt/disk' parameter caused the disk contents to be dumped,
  27         but a '/mnt/disk/' parameter caused the mountpoint directory
  28         to be dumped (generally an empty directory).
  29
  30 3.      Improved the output of dump in order to tell which directory
  31         it is currently dumping (when dumping a subtree).
  32
  33 4.      Added the '-e' exclude inode option to dump. Thanks to
  34         Isaac Chuang <ike@isl.stanford.edu> for contributing with the patch.
  35
  36 5.      Added a REPORTING-BUGS file in order to provide a guide
  37         on how to correctly report a bug in dump/restore.
  38
  39 6.      Fixed a restore problem when restoring a hard link to an inode
  40         having the immutable or append-only attribute set. Thanks to
  41         Ambrose Li <acli@mingpaoxpress.com> for submitting the patch.
  42
  43 7.      Fixed a compatibility problem between dumps made on little
  44         endian machines (the format was correct) and big endian
  45         machines (the format was incorrect). This fix break the
  46         compatibility with the older dumps made on big endian
  47         machines (sparc, m86k, ppc etc). For the first time in
  48         linux dump's history (I believe), the dumps made by *BSD,
  49         Linux/alpha, Linux/sparc and Linux/x86 are compatible,
  50         so interchangeable. Thanks to Rob Cermak
  51         <cermak@ahab.rutgers.edu> for submitting the bug and
  52         helping me test the fix.
  53
  54 8.      Fixed the way dump reports the remaining percent/time, if
  55         the number of blocks actually dumped exceeds the estimated
  56         number of blocks. Thanks to Jean-Paul van der Jagt
  57         <jeanpaul@dutepp0.et.tudelft.nl> for reporting the bug.
  58
  59 Changes between versions 0.4b12 and 0.4b13 (released January 21, 2000)
  60 ======================================================================
  61
  62 1.      Small Y2K fix in the man pages :). Thanks to Bernhard Sadlowski
  63         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug.
  64
  65 2.      Removed the requirement to build the RPM as root from the
  66         spec file. Thanks to Christian Weisgerber
  67         <naddy@mips.rhein-neckar.de> for submitting this.
  68
  69 3.      Fixed a bug in dump related to the 'filetype' feature of ext2fs,
  70         causing dump to block when dumping really huge filesystems.
  71         Many thanks to Patrik Schindler <poc@pocnet.net> for
  72         helping me find this bug.
  73
  74 4.      Fixed the treatment for an interrupt signal when dump access
  75         the remote tape through RSH. Thanks to Christian Weisgerber
  76         <naddy@mips.rhein-neckar.de> for providing the patch.
  77
  78 5.      Fixed a bug which was causing dump/restore to display
  79         garbage characters instead of the remote host name.
  80
  81 Changes between versions 0.4b11 and 0.4b12 (released January 8, 2000)
  82 =====================================================================
  83
  84 1.      Small fix in the dump man page. Thanks to Thorsten Kukuk
  85         <kukuk@suse.de> for submitting the patch.
  86
  87 2.      Fix for the exit code when using the size estimate option of
  88         dump. Thanks to Matti Taskinen <mkt@rni.helsinki.fi> for
  89         submitting the patch.
  90
  91 3.      Handle EINTR in atomical reads/writes in dump, which was causing
  92         dump to fail on some systems. Thanks to Eric Jergensen
  93         <eric@dvns.com> for reporting the bug and submitting the patch.
  94
  95 4.      Handle more than 16 characters for the device names in dumpdates.
  96         (up to 255 now). Thanks to Rainer Clasen <bj@ncc.cicely.de> for
  97         tracking down the problem and proposing the solution.
  98
  99 5.      Fixed a bug in dump which prevented the creation of the
 100         dumpdates file when doing a 0-level dump without already
 101         having a dumpdates file. Thanks to Patrik Schindler
 102         <poc@pocnet.net> for reporting the bug.
 103
 104 6.      Changed the way dump 'S' flag reports the size estimate
 105         from number of blocks into bytes (making it compatible
 106         with the Solaris version, and simplifying things for
 107         amanda users). Thanks to Jason L Tibbitts III
 108         <tibbs@math.uh.edu> for reporting the bug.
 109
 110 7.      Fixed a compatibility problem in linux/alpha dump tape format.
 111         Now the linux/alpha dump are (again) compatible with the
 112         other dump formats. But this breaks compatibility with
 113         older dumps made on alpha. Thanks to Mike Tibor
 114         <tibor@lib.uaa.alaska.edu> for helping me in finding this bug.
 115
 116 Changes between versions 0.4b10 and 0.4b11 (released December 5, 1999)
 117 ======================================================================
 118
 119 1.      Added a '--enable-kerberos' to configure.
 120
 121 2.      Added a 'S' option to dump which determines the amount of space
 122         that is needed to perform the dump without actually doing it, similar
 123         to the Sun's ufsdump 'S' option. Patch contributed by Rob Cermak
 124         <cermak@ahab.rutgers.edu>.
 125
 126 3.      Added a 'M' multi-volume option to dump and restore which enables
 127         dumping to multiple files (useful when dumping to an ext2
 128         partition to make several dump files in order to bypass the 2GB
 129         file size limitation). The 'f' argument is treated as a prefix and
 130         the output files will be named <prefix>001, <prefix>002 etc. With
 131         the 'M' flag, restore automatically selects the right file without
 132         asking to enter a new tape each time.
 133
 134 4.      Fixed a memory leak which was causing dump to grow very big
 135         (270MB when dumping a 10GB filesystem...). Thanks to Jason
 136         Fearon <jasonf@netrider.org.au> for reporting the bug.
 137
 138 Changes between versions 0.4b9 and 0.4b10 (released November 21, 1999)
 139 ======================================================================
 140
 141 1.      Make configure test if the system glob routines support
 142         extended syntax (ALTDIRFUNC). If not, use the internal glob
 143         routines instead of system ones. Thanks to Bernhard Sadlowski
 144         <sadlowsk@Mathematik.Uni-Bielefeld.DE> for reporting the bug
 145         and helping me resolve this and other minor libc5 compiling
 146         glitches.
 147
 148 2.      Fix a problem when dumping a ext2fs with the 'filetype'
 149         feature enabled. Thanks to Patrick J. LoPresti
 150         <patl@cag.lcs.mit.edu> for reporting the bug and to
 151         Theodore Y. Ts'o <tytso@mit.edu> for providing the patch.
 152
 153 3.      Made the nodump flag work on directories. A directory which
 154         has the nodump flag gets never dumped, regardless of its
 155         contents.
 156
 157 4.      Integrate a patch from Jeremy Fitzhardinge <jeremy@goop.org>
 158         which allows dump on an active ext3 filesystem. However, this
 159         is a "quick and dirty" patch which enables backup of an ext3
 160         filesystem through the ext2 compatibility (by ignoring the
 161         NEEDS_RECOVERY bit). The journal file is not recognized and
 162         it is dumped (it should not).
 163
 164 5.      Test the superblock compatibility flags when dumping, in order
 165         to be sure that we know how to deal with specific features.
 166
 167 Changes between versions 0.4b8 and 0.4b9 (released November 5, 1999)
 168 ====================================================================
 169
 170 1.      Use lchown instead of chown, fixing a possible security problem
 171         when restoring symlinks (a malicious user could use this
 172         to deliberately corrupt the ownership of important system files).
 173         Thanks to Chris Siebenmann <cks@utcc.utoronto.ca> for detecting
 174         this and providing the patch.
 175
 176 Changes between versions 0.4b7 and 0.4b8 (released November 3, 1999)
 177 ====================================================================
 178
 179 1.      Put dump sources under CVS, added Id tags in all files so
 180         one can use 'ident' on binary files.
 181
 182 2.      Added the dump/restore version in the usage text so one can
 183         easily verify the version he is using.
 184
 185 3.      Small patch from Nuno Oliveira <nuno@eq.uc.pt> which fixes
 186         a va_start/va_end problem on linux-ppc (always call va_start
 187         va_end in pairs each time we use a vararg function).
 188
 189 4.      Added again the DT_* constants because old libc does not
 190         contain them :(. Thanks to Eric Maisonobe <virnet@nat.fr>
 191         for submitting the bug report.
 192
 193 5.      Use ext2fs_llseek instead of llseek. With recent e2fsprogs
 194         this should enable dumping big (huge) filesystems.
 195
 196 6.      Added the RSH environment variable in order to be able to
 197         use a rsh replacement like ssh when doing remote backups (and
 198         bypass the security limitations of rcmd). Now you can do remote
 199         backups without being root (or making dump setuid root).
 200
 201 7.      Modified again the way dumpdates works. For incremental dumps,
 202         we need to read dumpdates even if we are not using 'u' option.
 203         Thanks to Bdale Garbee <bdale@gag.com> for his ideas on how
 204         this should work.
 205
 206 Changes between versions 0.4b6 and 0.4b7 (released October 8, 1999)
 207 ===================================================================
 208
 209 1.      Removed the 'k' flag from the restore 'about' text if kerberos
 210         was not compiled in.
 211
 212 2.      Prototyped (f)setflags from e2fsprogs and corrected the calls
 213         to them (fsetflags takes a char*, setflags an open fd!).
 214
 215 3.      (f)setflags is called only if the flags aren't empty. If the
 216         file is a special file, a warning is printed, because changing
 217         flags implies opening the device. Normally, a special file
 218         should not have any flag... (Debian bug #29775, patch provided
 219         by Abhijit Dasgupta <abhijit@ans.net>).
 220
 221 4.      Made possible to dump a file system not mentioned in /etc/fstab.
 222         (Debian bug #11904, patch provided by Eirik Fuller <eirik@netcom.com>).
 223
 224 5.      Changed the default behaviour to not create dumpdates
 225         unless 'u' option is specified. Removed the old "debian-patch"
 226         which provided the same thing. (Debian bug #38136, #33818).
 227
 228 6.      Removed all those dump*announce, since they were getting old...
 229
 230 7.      Added warning messages if dumpdates does not exist and
 231         when an inferior level dump does not exist (except for a level 0
 232         dump).
 233
 234 8.      Debugged the glob calls in interactive mode: restore used a
 235         dirent struct which was different from the /usr/include/dirent.h
 236         one (this used to work, is it a glibc2 change?), so none of the
 237         compat glob (which used /usr/include/dirent.h) or the system glob
 238         worked. Restore use now the system dirent (and the system
 239         DT_* constants), which are compatible with BSD ones.
 240
 241 9.      Added a configure flag (--with-dumpdatespath) to specify
 242         the location of dumpdates file. By default, it is
 243         /etc/dumpdates.
 244
 245 10.     Added the "AUTHOR" and "AVAILABILITY" sections and
 246         included the current date/version in man pages.
 247
 248 11.     Corrected the estimation of remaining time when
 249         the operator doesn't change the tapes quickly enough. This
 250         was an old bug, I thought I corrected it, and discovered
 251         that in fact it was corrected in two different places, so
 252         the results canceled each other...
 253
 254 Changes between versions 0.4b5 and 0.4b6 (released October 1, 1999)
 255 ===================================================================
 256
 257 1.      Integrated multiple patches from RedHat, Debian and SuSE:
 258
 259         - tweak dump/itime.c to not try to read dumpdates if the 'u' option
 260           isn't specified.
 261         - several fixes in the man pages.
 262         - update the default tape device to /dev/st0.
 263         - many updates for Linux Alpha (byte ordering, size_t etc).
 264         - buffer overruns.
 265         - use environment variable for TMPDIR (instead of /tmp).
 266         - use sigjmp_buf instead of jmp_buf (RedHat bug #3260).
 267         - workaround egcs bug (RedHat bugs #4281 and #2989).
 268         - wire $(OPT) throughout Makefile's.
 269
 270 2.      Upgrade the dump revision to 1, making possible to dump filesystems
 271         made with e2fsprogs-1.15 or newer. Nothing seems to break...
 272
 273 3.      Fix some compile warnings, prototype all functions.
 274
 275 4.      Use glibc err/glob instead of internal compatibility
 276         routines (only if available).
 277
 278 5.      Fix a compile error on Linux 2.2.7 / libc5 (5.4.44) (patch provided
 279         by Bernhard Sadlowski <sadlowsk@mathematik.uni-bielefeld.de>).
 280
 281 Changes between versions 0.4b4 and 0.4b5 (released September 22, 1999)
 282 ======================================================================
 283
 284 1.      Integrated the changes from FreeBSD-3.1-RELEASE
 285         (mostly bug fixes, buffer overruns, dump has now an "automatic
 286         tape length calculation" flag, dump/restore can use kerberos now
 287         (this is NOT tested), use environment variables for TAPE and
 288         RMT etc.).
 289
 290 2.      Integrated three RedHat patches ("glibc", "kernel" and "bread" patches)
 291
 292 3.      Corrected a bug in restore when using 'C' option with multi-volumes
 293         tapes (files splited accros two tapes give "size changed" errors
 294         when comparing).
 295
 296 4.      Corrected the long standing bug when dumping multiple tapes.
 297         This works for me, needs further testing.
 298
 299 Changes between versions 0.4b3 and 0.4b4 (released January 17, 1997)
 300 ====================================================================
 301
 302 1.      Dump now runs correctly on kernels 2.1.x
 303         Fix made by Gerald Peters <gapeters@worldnet.att.net>
 304
 305 Changes between versions 0.4b2 and 0.4b3
 306 ========================================
 307
 308 1.      Use realpath() if available
 309
 310 2.      Report statistics
 311
 312 Changes between versions 0.4b1 and 0.4b2
 313 ========================================
 314
 315 1.      Fixed the bug fix from Greg Lutz (I had made a mistake when integrating
 316         the patch)
 317
 318 2.      Fixed restore to make it able to read FreeBSD 2.x dumps again
 319
 320 3.      Fixed configure.in to correctly handle --enable-rmt
 321
 322 Changes between versions 0.3 and 0.4b1
 323 ======================================
 324
 325 1.      Integrated the changes from 4.4BSD-Lite2
 326
 327 2.      Integrated the patches from Debian and Red Hat
 328
 329 3.      Portability changes: use the __u32, __u16, __s32, and __s16 types
 330
 331 4.      Changed dump to use the Ext2fs library to get block addresses.  This
 332         should solve the endianness problem on SparcLinux.
 333
 334 5.      Created a configure.in file (shamelessly stolen from the e2fsprogs
 335         distribution's one) to use autoconf
 336
 337 6.      Fixed a few minor bugs
 338
 339 Changes between versions 0.2e and 0.2f
 340 ======================================
 341
 342 1.      Added the creation of named pipes (fifos) in restore.
 343
 344 2.      Added the -N flag in the restore manual page.
 345
 346 3.      Added the file kernel.patch which contains the llseek() optimization
 347         patch for 1.2.x kernels.
 348
 349 4.      Fixed a bug in the restoration of symbolic links: owner and group were
 350         not restored.
 351
 352 5.      Integrated some changes from FreeBSD 2.2.
 353
 354 6.      Added a call to ftruncate() after restoring each file to restore
 355         correctly files ending by a hole.
 356
 357 Changes between versions 0.2d and 0.2e
 358 ======================================
 359
 360 1.      Fixed a bug in the "set owner/mode" process.  Every file was restored
 361         with owner = root (0) and group = root/wheel/whatever (0).
 362
 363 Changes between versions 0.2c and 0.2d
 364 ======================================
 365
 366 1.      Dump is now able to backup 2GB+ filesystems.
 367
 368 2.      Dump and restore can now be linked as static binaries.
 369
 370 Changes between versions 0.2b and 0.2c
 371 ======================================
 372
 373 1.      Fixed a bug when dumping ``slow'' (i.e. normal) symbolic links.
 374
 375 Changes between versions 0.2a and 0.2b
 376 ======================================
 377
 378 1.      Really fixed the bug that I should have corrected in 0.2a.
 379
 380 2.      Enabled optimization again.
 381
 382 Changes between versions 0.2 and 0.2a
 383 =====================================
 384
 385 1.      Disabled the optimization during compilation.
 386
 387 Changes between versions 0.1 and 0.2
 388 ====================================
 389
 390 1.      Fixed a bug in fstab.c which caused a null pointer to be stored in
 391         the fs_type field (actually, I modified the file fstab.c to make it
 392         use the mntent functions).
 393
 394 2.      Dump and restore now use a 4.3 BSD compatible dump format.  Backups
 395         made by dump should be readable by the BSD restore and backups made
 396         by the BSD dump should be readable by restore.  Unfortunately, this
 397         means that the dump format has changed between version 0.1 and version
 398         0.2 :-(
 399
 400 3.      Dump is now able to backup a subtree, it is no longer limited to whole
 401         filesystems like the BSD version.
 402
 403 4.      Dump now uses ext2_llseek() so it is able to backup filesystems bigger
 404         than 2 GB.
 405
 406 Changes between versions 0.0 and 0.1
 407 ====================================
 408
 409 1.      Now create links rdump and rrestore during the `make install' step.
 410
 411 2.      Linux port specific bugs added to the manual pages
 412
 413 3.      Incorrect estimation of the number of tapes blocks fixed when doing
 414         incremental backups.
 415
 416 4.      Better ls-like format in restore in interactive mode.