blob: aae69b054738b1b8a8b500c7b01c80baa4624387 [file] [log] [blame]
Theodore Ts'o767de092001-06-02 01:20:18 +00001E2fsprogs 1.21-WIP (June 1, 2001)
2=================================
3
Theodore Ts'oc05b5522001-06-08 12:03:36 +00004Fixed a ext3 recovery bug in the revoke handling; synchornized with
5ext3 0.7a.
6
Theodore Ts'o767de092001-06-02 01:20:18 +00007Fixed two bugs in e2fsck's handling of dup block handling, dealing
8with relatively uncommon edge cases: a directory with an indirect
9block which is claimed by another file, and when the last inode in the
10filesystem has blocks claimed by another file.
11
Theodore Ts'o5a9c0362001-06-02 04:55:57 +000012E2fsck now checks to see if the i_size field of a fast symlink is too
13big, and offers to clear the symlink if so.
14
15E2fsck now checks to see if i_size_high of special files is non-zero,
16and offers to clear i_size_high.
17
18Fixed byte-ordering conversion bug which caused e2fsck's revoke
19handling to essentially not work.
20
Theodore Ts'o767de092001-06-02 01:20:18 +000021Fix e2fsck's handling of incompatible journal flags so that the user
22has chance to abort, and then has the option to clear out the journal
23entirely.
24
Theodore Ts'oc05b5522001-06-08 12:03:36 +000025Fixed a bug in debugfs which caused read errors when copying a file to
26not be noticed.
27
28Fixed a bug in lsattr and chattr which was accidentally introduced in
291.20 to support > 2GB files; both lsattr and chattr wasn't reading
30directories correctly because the change modified the layout of struct
31dirent to be incompatible with the libe2p shared library.
32
Theodore Ts'o767de092001-06-02 01:20:18 +000033Programmer's notes:
34-------------------
35
36Fix general gcc -Wall complaints.
37
38The types needed by the ext2 header files are now provided by
39lib/ext2fs/ext2_types.h, instead of include/asm/types.h.
40
Theodore Ts'oc05b5522001-06-08 12:03:36 +000041Integers are now preferred to longs when trying to find a 32-bit type
42in ext2_types.h.
43
Theodore Ts'o767de092001-06-02 01:20:18 +000044Fixed make depend script so that it automatically corrects the
45pathname cleanups performed by make -M, so I don't have to fix them up
46by hand.
47
48Fixed the d_loaddump test case to be more robust, and not depend on
49bash'isms.
50
51Removed debugfs's dependence on pread(), which was accidentally
52intrudced in e2fsprogs 1.20
53
Theodore Ts'oc05b5522001-06-08 12:03:36 +000054Fixed a performance bug in the libext2fs's icount routine; the size
55estimate of the icount array was incorrectly being calculated.
56
57
Theodore Ts'o767de092001-06-02 01:20:18 +000058
Theodore Ts'o5a009bb2001-05-21 05:27:45 +000059E2fsprogs 1.20 (May 20, 2001)
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +000060=============================
Theodore Ts'o5570a652000-08-21 01:23:39 +000061
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +000062Add support for replaying the ext3 journal purely in user mode,
63including handling the orphaned inode list. Used code contributed by
64Andreas Dilger, with bug fixes and the orphaned inode handling done
65by Theodore Ts'o.
66
67The mke2fs and tune2fs programs can create or modify a filesystem to
68include an ext3 journal. Tune2fs also can be used to remove an ext3
69journal from a filesystem.
Theodore Ts'o5570a652000-08-21 01:23:39 +000070
71E2fsck will now check for the existence of a linked list of orphan
72inodes in the superblock, and clear those inodes before starting the
73rest of the filesystem check (but after the journal playback).
74
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +000075E2fsck now validates the file descriptor passed to the -C option,
76which saves against the completion bar getting written to an
77unexpected location, such as the disk being checked. (Debian
78bug/wishlist #55220)
79
80E2fsck will now bump the filesystem revision number from zero to one
81if any of the compatibility bits are set.
82
83Fixed a bug where a badly corrupted directory on a big endian system
84could cause e2fsck to die with a bus error. The
85ext2fs_read_dir_block() and ext2fs_process_dir_block() functions in
86the ext2 library now does alignment sanity checks on the rec_len field
87of the directory entry before using it.
88
89The ext2 library has been enhanced to make tune2fs safe to run on
90mounted filesystems. (Users could usually get away with using tune2fs
91on mounted filesystems before, but with the advent of ext3 and
92journaling, it became important to make tune2fs was *really* safe for
93use even when the filesystem being modified is mounted.) E2label is
94now implemented by tune2fs using an argv[0] dispatch, so that e2label
95is also now safe for use on mounted filesystems.
96
97Added a new program, e2image, which creates a backup of critical ext2
98filesystem data structures. The generated image file can be examined
99using dumpe2fs and debugfs. In the future, e2fsck will be able to use
100the image file to help recover very badly damaged filesystems.
101
102Fixed a number of LFS bugs in e2fsck; very, very large (> 2**42) files
103no longer cause e2fsck to bomb out. Also treat files > 2GB as being
104large file when deciding whether or not the filesystem has large files.
105
106Fixed lsattr and chattr so that they work correctly on large files.
107(Fixes Debian bug #72690.)
108
109Removed limitation in get_device_size() which imposed a one terrabyte
110filesystem limitation. (Most 2.2 kernels still have a signed int
111problem which cause 1 TB block device limitation. Fortunately, the
112kernel patches to fix this are much easier than fixing the 2TB
113limitation in the kernel. :-)
114
115A max_mount_count of zero is now treated as if no mount count were
116set. (Previously, no mount count was indicated by using -1, and a
117mount count of zero caused e2fsck to always be run.)
118
Theodore Ts'o77648562001-05-14 13:04:44 +0000119Mke2fs supports two new filesystem types largefile and largefile4.
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +0000120
121Mke2fs now adds some randomness in s_max_mount_count so that multiple
122filesystems won't be all checked at the same time under normal
123operations.
124
Theodore Ts'o5570a652000-08-21 01:23:39 +0000125Fixed bug in the progress bar printing code which could cause e2fsck
126to core dump on an illegal filesystem.
127
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +0000128Fixed bug in fsck which could allow more than one instance of e2fsck
129to be printing a progress bar. (Debian bug #65267)
130
Theodore Ts'o5570a652000-08-21 01:23:39 +0000131Fsck using a UUID or a LABEL specifier will work even if devfs is
132compiled into the kernel and not mounted. If the pathnames in
133/proc/partitions are incorrect, fsck will search /dev for the correct
134device (using the new ext2fs_find_block_device library function).
135Fsck now also checks the RAID devices first so that they are properly
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +0000136found when they are in use. Support has also been added to support
137additional IDE disks and the DAC 960 device names. (Debian bug #94159)
138
139Fixed a bug in fsck which caused it not deal properly with 16
140byte long filesystem labels.
Theodore Ts'o5570a652000-08-21 01:23:39 +0000141
Theodore Ts'o5a009bb2001-05-21 05:27:45 +0000142Fsck's -t option has been made a lot more flexible. The semantics for
143what happens if a comma-separated list to fsck has been regularized,
144and it is now possible to filter what filesystems will get checked
145based what is in the filesystem's fstab entry's option field. (Debian
146bug #89483.)
147
Theodore Ts'o5570a652000-08-21 01:23:39 +0000148The dumpe2fs program can now print out the group description
149information in hex, and also prints the location of the superblock and
150block group descriptor for those block groups that have them.
151
152Mke2fs now clears the ext2 superblock before it starts creating a
153filesystem, so that the superblock magic number is only written if the
154filesystem creation process successfully completes.
155
156The debugfs program's stat command now pretty-prints the blocks used
157by an inode so that it's more compact and informative.
158
159The debugfs stats command now uses the same libe2p code (which is used
160by dumpe2fs) to print the superblock header information. This is more
161complete, and it avoids a bit of code duplication.
162
163Added a new debugfs command, set_super_value (ssv) which allows the
164user to set arbitrary superblock fields.
165
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +0000166Debugfs was extended to support inode numbers in hex (by prefixing
167them with 0x), and so that modify_inode can set the inode generation
168number. Also, there is now a new function command called logdump
169which will dump an ext3 journal.
170
171Fixed a bug in debugfs so that quitting out of the pager doesn't kill
172debugfs.
173
174Debugfs's dump command now stops immediately upon reporting a disk
175read error. (Fixed a bug in ext2fs_file_read library routine which
176caused debugfs not to stop.) (Debian bug #79163)
177
178On systems with /proc/mounts (mainly Linux systems), /proc/mounts is
179checked before /etc/mtab is used, since /proc/mounts is more likely to
180be accurate.
181
182Added portability fixes for Solaris and Linux/ia64.
183
184Various manual pages were clarified and cleaned up. (Fixed debian
185bugs #63442, #67446, and #87216)
186
Theodore Ts'o5570a652000-08-21 01:23:39 +0000187
188Programmer's notes:
189-------------------
190
191The e2fsck message printer now supports %Iu and %Ig, which will print
192out the inode's user and group owners, respectively.
193
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +0000194E2fsprogs now includes its own version of include/linux/ext2_fs.h, so
195that no longer dependent on the system having the correct version of
196the kernel header files.
197
Theodore Ts'o5570a652000-08-21 01:23:39 +0000198Added a new function to libext2, ext2fs_find_block_device(), which
199searches the system (i.e., /dev, /devfs, /devices) for a pathname to a
200device given its device number.
201
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +0000202Added a new function to libext2, ext2fs_sync_device, which centralizes
203all of the places which might try to use the BLKFLSBUF or FDFLUSH
204ioctls (and usually failing to define them since the system header
205files don't usually do this for us, and we're trying to avoid usage of
206kernel include files now).
207
Theodore Ts'o5570a652000-08-21 01:23:39 +0000208Added new utility programs in tests/progs: random_exercise and
209hold_inode. They aren't built by default; they're useful for
210exercising ext3 filesystem code.
211
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +0000212Added a new ext2 filesystem flag, EXT2_FLAG_SUPER_ONLY, which causes
213the filesystem close functions to only update the superblock, and to
214not touch the block group descriptors. Needed by tune2fs when
215modifying a mounted filesystem.
216
217Got rid of struct ext2fs_sb and replaced it with the standard struct
218ext2_super_block from include/linux/ext2_fs.h. Note: this may break
219source (but not binary) compatibility of some users of the ext2
220library. Those applications should just simply do a global search and
Theodore Ts'o7d614e32001-06-13 23:49:05 +0000221replace of struct ext2fs_sb with struct ext2_super_block, and include
222the new header file <ext2fs/ext2_fs.h> which defines it.
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +0000223
224The ino_t type has been renamed ext2_ino_t to protect applications
225that attempt to compile -D_FILE_OFFSET_BITS=64, since this
226inexplicably changes ino_t(!?). So we use ext2_ino_t to avoid an
227unexpected ABI change.
228
229The Makefiles have been reworked so that "make check" can be run from
230the top-level Makefile.
231
232Fix general gcc -Wall complaints and removed dead code.
233
234Remove use of NOARGS, because we assume everyone does ANSI C these
235days.
236
237Added build-rpm script from sct.
238
239New functions ext2fs_image_{inode,super,bitmap}_{read,write} added
240to support e2image.
241
242New function ext2fs_flush_icache which must be called if the
243application program modifies the inode table blocks without going
244through ext2fs_write_inode() interface.
245
246New ext2fs_check_mount_point() function, which will return the mount
247point of a device if mounted.
248
249The io_channel abstraction now has an optional interface,
250io_channel_write_range, which allows specific byte ranges to be
251written.
252
253The unix_io IO channel now supports write-through caching, so that
254journal creation is more efficient.
255
256Added x86 assembly language routines to support byte swapping, to
257reduce executable size.
258
259Fixed bug in the utility program subst so that it's possible to
260replace a substitution variable with a zero-length string.
261
262Fixed numbering e2fsck pass1 problem numbers; an extra zero had
263slipped into some of the problem number.
Theodore Ts'o5570a652000-08-21 01:23:39 +0000264
Theodore Ts'ob777e262000-07-27 01:39:23 +0000265E2fsprogs 1.19 (July 13, 2000)
266==============================
Theodore Ts'oab146762000-07-07 04:37:35 +0000267
268Release the resize2fs program since the timeout before it could
Theodore Ts'o006ea712000-08-21 03:39:49 +0000269be released under the GPL has finally expired.
Theodore Ts'oab146762000-07-07 04:37:35 +0000270
271Add experimental support needed for the ext2 compression patches.
272This requires compiling e2fsprogs with the --enable-compression flag
273to the configure script.
274
275Added ext3 journalling support. E2fsck will run the journal (if
276necessary) by temporarily mounting the filesystem. /sbin/fsck.ext3 is
277installed as a symlink to e2fsck. Fsck has been taught about ext3,
278and treats it the same as ext2 in terms of the progress bar logic.
279Dumpe2fs will display the superblock journaling information if the
280filesystem has a journal. The ext2 library will now permit opening an
281ext3 filesystem with the recovery flag set. This is necessary for
282on-line dump's to work correctly, but there may be issues with this
283working well since ext3 is much less agressive about syncing blocks to
284the filesystem, since they're safe on the journal.
285
286Tune2fs and e2fsck have been changed to allow the mount_count check to
287be disabled by setting max_mount_count to -1. (This was already
288supported by the kernel.)
289
290Create a symbolic link for fsck.ext3, since the e2fsprogs utilities
291are used for ext3 as well.
292
293Added internationalization support for e2fsprogs; must be enabled
294by passing --enable-nls to configure.
295
296Always use the provided ext2fs header files to insulate ourselves from
297kernel version changes. Which include files are used by e2fsprogs
298have also been cleaned up to improve portability.
299
300Limit the number of times that e2fsck updates the progress bar so that
301people who are booting using a 9600 baud console don't get swampped by
302too many updates.
303
304Improved the loop detection algorithm in e2sck's pass #3 so that it is
305much, much faster for large filesystems with a large number of
306directories.
307
308The memory footprint for e2fsck is now slightly smaller than before.
309
310E2fsck now checks if special devices have a non-zero size, and offers
311to clear the size field if it finds such an inode.
312
313E2fsck now checks if special devices have the append-only flag set,
314and offers to clear the inode.
315
316E2fsck now properly handles some "should never fail" cases during a
317bitmap copy in pass5.
318
319E2fsck now properly prints control characters in filenames as ^A .. ^Z.
320
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +0000321E2fsck now calculates the correct location of the backup superblock in
322the case of filesystem blocksizes > 1k.
323
324Fixed a bug in e2fsck's calculation of the number of inodes_per_block
325which normally didn't cause problems under most filesystem parameters,
326but could cause a valid superblock to be rejected in extreme cases.
327Other checks for validating superblock values were made more
328stringent.
329
Theodore Ts'oab146762000-07-07 04:37:35 +0000330Added non-destructive write testing to the badblocks program, courtesy
331of David Beattie. The badblocks also now has an option to input the
332current set of bad blocks, so that known bad blocks are skipped to
333speed up the badblocks test. There is also a persistent rescan
Theodore Ts'o006ea712000-08-21 03:39:49 +0000334feature which causes badblocks to run until it has completed some
335number of passes without discovering any new bad blocks.
Theodore Ts'oab146762000-07-07 04:37:35 +0000336
337Badblocks now checks to see if the device is mounted and refuses to do
338the tests involving writing to the device if it is mounted. Also,
339badblocks now allows the number of blocks to be checked to be
340defaulted to the size of the partition.
341
342Fixed a bug in fsck which didn't allow non-root users to be able to
343check filesystems if there were any LABEL= or UUID= entries in
344/etc/fstab.
345
346The Hurd doesn't support the filetype filesystem feature. The mke2fs
347program now makes sure that for the Hurd, the filestype feature is
348turned off. E2fsck will check to see if the filetype feature is
349turned on for Hurd filesystems, and offer to turn off the feature.
350
351Mke2fs now has a safety check to make sure the number of blocks do not
352exceed 32 bits even on a 64 bit platform.
353
354Really fixed a bug in fsck to allow "fsck -As" to run interactive
355fsck's. (For those people who like to do interactive fsck's in the
356/etc/rc scripts!?!)
357
358Debugfs has a few new features: the rdump command, which will do a
359recursive dump of a directory and all of its contents, and the lcd
360command which does a local chdir (much like the ftp command of the
361same name). In addition, the debugfs program and the open_filesystem
362command now takes three new options: -b and -s, which allows the
363blocksize and superblock location to be specified, and the -c option
364which is used in catastrophic situations where the block group
365descriptors are corrupt. If the -c option is specified, debugfs will
366skip trying to read in the block and inode bitmaps.
367
368Debufs's lsdel command was fixed to handle bad blocks in the inode
369table.
370
371A Y2K bug in debugfs's "ls -l" handling was fixed by switching to use
3724 digit years.
373
374General improvements in error messages
375
376 - Mke2fs prints a sane error message if the partition size is zero
377 (usually because the partition table wasn't reread by the
378 kernel due to the partition being busy), instead of "invalid
379 argument passed to ext2 library while initializing superblock".
380
381 - Fsck now prints more self-explanatory message if an invalid UUID=
382 or LABEL= specification is passed to it.
383
384UUID library changed to use the LGPL.
385
386Fixed a bug in the UUID library where very rapid calls to the
387time-based UUID generator could cause duplicate UUID's to be returned.
388This was not a problem for e2fsprogs, but it could be a problem for
389other users of the library.
390
391Make the UUID library more robust in the face of missing or an
392improper /dev/urandom or /dev/random files.
393
394Added some random portability fixes for Solaris.
395
396Some minor man page updates.
397
398Fixed a memory leak in the ss library.
399
400
401Programmer's notes:
402-------------------
403
404We now try to use lseek64 and open64 from the LFS if possible.
405
406The 3rd parameter in e2p's print_flags is now a flags word, instead of
407a boolean option.
408
409The mark and unmark bitmap functions now return the previous state of
410the bit that was being changed, which is useful for some speed
411optimizations.
412
413The following functions have been added to enhance the badblocks list
414handling in libext2fs: ext2fs_write_bb_FILE, ext2fs_read_bb_FILE2, and
415ext2fs_badblocks_equal.
416
417The ext2 header files now have the latest journalling fields to the
418superblock.
419
420The ext2fs_mkdir function in libext2fs now properly backs out of error
421conditions robustly.
422
423Cleaned up makefiles:
424 - to cleanly compile with the -j flag.
425 - so distclean removes all generated files.
426 - so in case of an error while installing header files, the make aborts.
427
428Fix test_script so that it works correctly when compiling in the
429source directory.
430
Theodore Ts'o31d1d0c2001-05-11 05:15:06 +0000431The random UUID generation routine has been made slightly better in
432the case where /dev/random doesn't exist. (Use of randomly-based UUID
433is still not recommended if /dev/random doesn't exist, however; it's
434better to use the time/ethernet MAC address UUID in this case.)
Theodore Ts'oab146762000-07-07 04:37:35 +0000435
436Clean up the build process so it's more friendly in case of missing
437directories.
438
439The ext2fs header file can now be #include'd into C++ programs.
440
441The e2p.h header file is now installed.
442
443Added workaround to a gawk 3.0.5 bug in lib/ss/mk_cmds.
444
445
446
Theodore Ts'o24ded091999-11-10 15:56:16 +0000447E2fsprogs 1.18 (November 10, 1999)
448==================================
449
450Fix a core dumping bug in e2fsck if an imagic inode is present or
451(more rarely) if the filesystem is badly corrupted enough that e2fsck
452has to restart pass 1 processing. E2fsck now closes the filesystem
453before freeing a large number of its data structures, so in the case
454of future memory faults, at least the fixed filesystem will be fully
455written out.
456
457If a filesystem doesn't support imagic inodes, and e2fsck discovers an
458imagic inode, it will offer to clear the imagic flag.
459
460E2fsck will now offer to clear the immutable flag on special files
461(device/socket/fifos) when running it in non-preen mode.
462
463E2fsck will now set the filetype when creating /lost+found, and when
464connected orphaned inodes to /lost+found.
465
466Debugfs's ncheck and icheck commands now handles the case where there
467are bad blocks in the inode table without bombing out.
468
469The badblocks list processing code has been made more efficiently for
470appending a large number of (ordered) badblocks to the badblocks list.
471
472Some minor man page updates.
473
474Fsck now allows interactive e2fsck's when using fsck -As (not a common
475mode, but some people like to do this in boot scripts for silly reasons).
476
477Programmer's notes:
478-------------------
479
480The internal e2fsck problem code for PR_2_SPLIT_DOT was fixed to meet
481with the problem code convention.
482
483The badblocks list regression test program has been updated to work
484with previously made API name changes.
485
486The ext2fs_free() command now uses the new badblocks API to avoid
487using the compatibility layer.
488
489Added new regression test cases; the run_e2fsck test script now
490supports the ability for a test case to run a prepratory command
491before running e2fsck.
492
Theodore Ts'o28e11941999-10-26 18:17:20 +0000493E2fsprogs 1.17 (October 26, 1999)
494=================================
495
496Fixed nasty typo in fsck which caused parallelized fsck's to go into an
497infinite loop.
498
499Fixed a bug in fsck where it used strncmp to compare a binary UUID,
500thus potentially causing problems if a binary UUID contained a NULL
501character.
502
503E2fsck now uses stricter checks for directory entries in pass 2:
504zero-length filenames are not allowed; neither are 8 byte long
505directory entries.
506
507The debugfs "dirty" command now clears the filesystem valid bit.
508(Previously this just set the dirty-as-in-needs-writing-out-to-disk
509bit in the in-core superblock image. The new functionality is more
510what the user expects, and is more useful.)
511
512Added a debugging hook to test parallel fsck; if the environment
513variable FSCK_FORCE_ALL_PARALLEL, then filesystems on the same drive
514will be checked in parallel when they normally would not be.
515
516Programmer's notes:
517-------------------
518
519Fixed some #ifdef's for compilation under the Hurd OS.
520
521Fixed minor W2K compatibility problems.
522
523Fixed some miscellaneous GCC warnings.
524
525
Theodore Ts'o8a31ffe1999-10-23 03:33:15 +0000526E2fsprogs 1.16 (October 22, 1999)
527=================================
528
529Fixed a race condition bug in fsck; when printing a progress bar, if
530checking multiple filesystems in parallel, it was possible for fsck to
531send e2fsck a SIGUSR1 signal before e2fsck had installed its signal
532handler, which would cause it to terminate with a signal 10.
533
534E2fsck now properly handles filesystems that have the
535INCOMPAT_FILETYPE feature turned on. It can be used to convert a
536filesystem into using or not using FILETYPE feature.
537
538E2fsck now properly handles filesystems that have the IMAGIC feature
539turned on (this is used on Linux AFS servers).
540
541The mke2fs program now creates filesystems that have the filetype and
542sparse_superblock features enabled by default, unless it is run on a
543pre-2.2 kernel. These features are not supported by a pre-2.2 kernel,
544so there is now a new flag -O which allows the user to specify with
545which features she would like to create the filesystem; "mke2fs -O
546none" will create a filesystsem compatible with 2.0 kernels.
547
548The tune2fs program now has a -O option which allows the user to set
549and reset "safe" filesystem features. Currently, the only ones which
550allows to be modified are the filetype and sparse_superblock features.
551Note setting or clearing either feature will require running e2fsck on
552the filesystem afterwards. (n.b. Clearing the sparse_superblock feature
553requires that there is enough free space on the filesystem for the
554extra superblocks which will be created by e2fsck.)
555
556Debugfs can now set and print filesystem features in the superblock
557using the "features" command. Dumpe2fs will print out the complete
558set of features when listing the superblock.
559
560Dumpe2fs has new options -f (force) and -h (header-only).
561
562Fixed a bug in e2fsck which could cause the PROGRAMMING ERROR/bonehead
563message to come up. This could happen when decrementing or
564incrementing a link count could result in an overflow.
565
566Fixed a bug in e2fsck where the block count on the lost+found
567directory would not be properly incremented when the directory was
568expanded to the point where an indirect block needed to be allocated.
569
570E2fsck now makes some additional sanity checks on the superblock to
571avoid crashing or giving a memory allocation error if some of the
572values in the superblock are unresonable (but the superblock otherwise
573looks valid).
574
575Fixed a bug in e2fsck where a very badly corrupted filesystem might
576require two passes to completely fix the filesystem. This happened if
577an inode claimed blocks that was part of the filesystem metadata
578(typically, when garbage was written into an inode table or indirect
579block, since this kind of filesystem corruption normally doesn't
580happen otherwise).
581
582On the Alpha, glibc declares st_flags although it isn't actually used;
583the configure script was improved to detect this case so that
584e2fsprogs can avoid using the non-functional stat field.
585
586The manual pages were updated to use a more consistent formatting
587style consistent with standard Unix man pages. Mke2fs's man page
588added documentation for a few previously undocumented options.
589
590Fixed minor display bugs in tune2fs and mke2fs.
591
592Programmer's notes:
593-------------------
594
595Improved portability of e2fsprogs to non-Unix systems (in particular, NT).
596
597Added features to parse and print feature strings into the e2p library.
598(e2p_feature2string, e2p_string2feature, e2p_edit_feature).
599
600ext2fs_mkdir() and ext2fs_new_dir_block() now creates directories
601whose directory entries contain proper filetype information if the
602filesystem supports it.
603
604ext2fs_link() now uses the low 3 bits of its flags parameter to pass
605the directory entry filetype information. This is used to set the
606directory entry filetype information if the filesystem supports it.
607
608Fixed a bug in ext2fs_expand_dir() where the block count in a
609directory's inode would not be properly incremented when the directory
610was expanded to the point where an indirect block needed to be
611allocated.
612
613
Theodore Ts'oa39f3ef1999-07-20 02:02:40 +0000614E2fsprogs 1.15 (July 18, 1999)
Theodore Ts'oe2a99be1999-07-19 15:48:08 +0000615==============================
Theodore Ts'o6d53db31999-07-03 20:52:21 +0000616
617Add configuration checks so that e2fsprogs will compile cleanly on
618Linux 2.3 kernels that have renamed i_version to i_generation.
619
Theodore Ts'oe2a99be1999-07-19 15:48:08 +0000620E2fsck now prints a progress/completion bar (and not just a simple
621spinner) if the -C0 option is requested or if it receives a SIGUSR1
622signal. Fsck will automatically manage the (potentially muliple)
623e2fsck processes to print completion bars if it is given a -C option,
624with the right thing happening if multiple filesystems are being
625checked in parallel.
626
627Mke2fs now has better automatic hueristics to determine the filesystem
628parameters to be used for a particular filesystem. Added a new option
629-T which allows the user to specify how the filesystem is to be used,
630which helps mke2fs do a better job selecting the filesystem parameters.
631
Theodore Ts'oa39f3ef1999-07-20 02:02:40 +0000632Mke2fs now creates revision 1 filesystems by default, and with the
633sparse superblock feature enabled. The sparse superblock feature is
Theodore Ts'o8a31ffe1999-10-23 03:33:15 +0000634not understood by Linux 2.0 kernels, so they will only allow read-only
635mounts of filesystems with this sparse superblocks.
Theodore Ts'oa39f3ef1999-07-20 02:02:40 +0000636
Theodore Ts'o6d53db31999-07-03 20:52:21 +0000637Fix bug where if /dev/null couldn't be opened (should never happen),
638e2fsck would hang in a tight loop.
639
640Make e2fsck handle the case where /lost+found isn't a directory.
641
642E2fsck now uses mallinfo if it exists to get accurate statistics about
643its memory usage.
644
645Fix bug in e2fsck where it wouldn't check to see if a disconnected
646inode had any problems before connecting it to /lost+found.
647
648Add check to e2fsck so it makes sure that total number of inodes in
649the filesystem is a sane number.
650
651Fix fencepost error when clearing an the end of the block bitmap which
652caused the last block in the bitmap not to get cleared.
653
654Cleaned up a number of messages in e2fsck:
655 * The message "Group's #'s copy of the group descriptor..."
656 was fixed so that the correct number would be displayed.
657 * Added missing space in the "disk write-protected" error messsage
658 * Cleaned up the error message printed when a non-interactive
659 e2fsck needs to abort a check because the filesystem
660 appears to be mounted.
661
662Added a new command-line utility, uuidgen, which will create and print
663a UUID.
664
665Make debugfs's icheck command more robust by checking to make sure an
666inode has valid blocks before interarting over the inode's blocks.
667
668UUID generation now uses a random-based scheme whenever possible to
669prevent potential privacy problems.
670
671Man pages for all of the UUID functions in the lirbary were added.
672
673Fixed bug in fsck so it won't coredump if a filesystem not in
674/etc/fstab is given to it.
675
676Fsck now understands the UUID=xxxx and LABEL=yyyy forms in /etc/fstab
677that most of the other mount utilities understands.
678
679Mke2fs will make a filesystem even if it appears mounted if the force
680option is given.
681
682Dumpe2fs has new command-line options which allow a filesystem expert
683to specify the superblock and blocksize when opening a filesystem.
684This is mainly useful when examining the remains of a toasted
685filesystem.
686
687The badblocks program has been updated to display correctly on disks
688with large block numbers.
689
Theodore Ts'oe2a99be1999-07-19 15:48:08 +0000690The badblocks program no longer gives spurious errors when errors
691occur on non-block boundaries, which is common if the blocksize is
692larger than 1k.
693
Theodore Ts'o6d53db31999-07-03 20:52:21 +0000694Mke2fs will sync the disk device every MKE2FS_SYNC block groups if the
695MKE2FS_SYNC environment variable is set. This is to work around a VM
696bug in the 2.0 kernel. I've heard a report that a RAID user was able
Theodore Ts'oa39f3ef1999-07-20 02:02:40 +0000697to trigger it even using a 2.2 kernel, but hopefully it will not be
698needed for most Linux 2.2 users.
Theodore Ts'o6d53db31999-07-03 20:52:21 +0000699
700Fixed miscellaneous documentation and man pages.
701
702Programmer's notes:
703-------------------
704
705Cleaned up functions such as pass1_get_blocks, pass1_read_inode which
706in e2fsck's pass1.c really should have been static.
707
708The return value of the uuid_compare() function was changed to make it
709match with the convetions used by strcmp, memcmp, and Paul Leach's
710UUID sample document.
711
712The "make depend" process has now been made more automated; it now
713automatically word-wraps the dependencies, and only replaces source
714Makefile.in if there has been a change in the dependencies. Also, a
715top-level "make depend" now recurses through all the subdirectories
716automatically.
717
718The Makefile in .../util has been changed so that subst is built using
719the native C compiler during a cross-compilation, since the subst
720program is only used during the build process. Also add an explicit
721rule to build util/subst by cd'ing to the correct directory and
722running Makefile.
723
724The man directories are defined in terms mandir, so that the configure
725script can override the location of the manual pages.
726
727The config files have been updated to recognize new machine types for
728both the i386 and alpha families.
729
730Fsck has been modified so that it will accurately create an
731fsck_instance even when the noexecute flag is set. This allows for
732accurate debugging of the fsck pass structure. Also, when the verbose
733flag is given twice, fsck will print debugging information about when
734fsck is waiting for jobs to finish.
735
736
Theodore Ts'o14790ed1999-01-12 23:32:52 +0000737E2fsprogs 1.14 (January 9, 1999)
738================================
739
740Fix the fstab parsing code so that it can handle blank lines and
741comment characters. Also, missing pass numbers need to be treated as
742zero.
743
744Fixed a bug in e2fsck where under some circumstances (when e2fsck
745needs to restart processing after fixing an egregious inconsistency)
746it would try to access already freed memory.
747
748E2fsck now prints non-printable characters in directory entries and
749pathnames using '^' and 'M-' notation.
750
751Fixed chattr so that it will ignore symbolic links when doing
752recursive descent traversals. For both chattr and lsattr, no longer
753print the version string unless the -V option is given.
754
755Allow the system administrator to directly specify the number of
756inodes desired in the filesystem, for some special cases where this is
757necessary.
758
759Fix portability problems so that e2fsprogs can be compiled under Linux
7601.2 systems and Solaris systems.
761
762Update the config.guess file with a more recent version that will
763identify newer Linux platforms.
764
765Programmer's notes
766------------------
767
768Ext2fs_read_inode and ext2fs_write_inode will now return an error if
769an inode number of zero is passed to them.
770
Theodore Ts'o556ad131998-12-19 08:10:58 +0000771E2fsprogs 1.13 (December 15, 1998)
772==================================
773
774Fixed a bug in debugfs where an error messages weren't getting printed
775when the ext2 library routines to read inodes returned errors in the
776stat, cmri and rm commands.
777
778Fixed a bug in mke2fs so that if a ridiculous inode ratio parameter is
779provided, it won't create an inode table smaller than the minimum
780number of inodes required for a proper ext2 filesystem.
781
782Fsck now parses the /etc/fstab file directly (instead of using
783getmntent()), so that it can distinguish between a missing pass number
784field and pass number field of zero. This caused problems for
785diskless workstations where all of the filesystems in /etc/fstab have
786an explicit pass number of zero, and fsck could not distinguish this
787from a /etc/fstab file with missing pass numbers.
788
789E2fsck will create a /lost+found directory if there isn't one in the
790filesystem, since it's safer to create the lost+found directory before
791it's needed.
792
793Fixed e2fsck so that it would detect bogus immutable inodes which
794happen to be sockets and FIFO files, and offer to clear them.
795
796If a filesystem has multiple reasons why it needs to be checked, and
797one of the reasons is that it is uncleanly mounted, e2fsck will print
798that as the reason why the filesystem is being checked.
799
800Cleaned up the output routines of mke2fs so that it doesn't overflow
801an 80 column display when formating really big filesystems.
802
803Added a sanity check to e2fsck to make sure that file descriptors 0,
8041, 2 are open before opening the hard disk. This avoids a problem
805where a broken program might exec e2fsck with those file descriptors
806closed, which would cause disastrous results if the kernel returns a
807file descriptor for the block device which is also used by FILE *
808stdout.
809
810Fixed up the e2fsck progress reporting functions so that the values
811reliably reach 100% at the completion of all of the e2fsck passes.
812
813Fixed minor documentation bugs in man pages and usage messages.
814
815Programmer's notes:
816-------------------
817
818Fixed a number of lint warnings in the ext2fs library and potential
819portability problems from other OS's header files that might define
820CPP macros for names like "max" and "min".
821
822ext2fs_badblocks_list_add() has been made more efficient when it needs
823to grow the bad blocks list.
824
825Fixed a bug in e2fsck which caused it to dereference a freed pointer
826just before exiting.
827
828Fixed the substition process for generating the mk_cmds and compile_et
829scripts so that they will work outside of the build tree.
830
831Add sanity check to e2fsck so that if an internal routine
832(ext2fs_get_dir_info) returns NULL, avoid dereferencing the pointer
833and causing a core dump. This should never happen, but...
834
Theodore Ts'oa5696711998-07-09 05:38:07 +0000835E2fsprogs 1.12 (July 9, 1998)
Theodore Ts'o21d53851998-02-21 03:14:50 +0000836==================================
837
838E2fsprogs now works with glibc (at least with the version shipped wtih
839RedHat 5.0). The ext2fs_llseek() function should now work even with
840i386 ELF shared libraries and if llseek() is not present. We also
841explicitly do a configure test to see if (a) llseek is in libc, and
842(b) if llseek is declared in the system header files. (See standard
843complaints about libc developers don't understand the concept of
844compatibility with previous versions of libc.)
845
Theodore Ts'oc9833a61998-07-05 19:37:53 +0000846The ext2fs library now writes out the block group number in each of
847the superblock copies. This makes it easier to automatically
848determine the starting block group of the filesystem when the block
849group information is trashed.
850
851Added support for the EXT2_FEATURE_INCOMPAT_FILETYPE feature,
Theodore Ts'o101c84f1998-03-24 16:27:11 +0000852which means that e2fsprogs will ignore the high 8 bits of the
853directory entry's name_len field, so that it can be used for other
854purposes.
855
856Added support for the EXT2_FEATURE_RO_COMPAT_LARGE_FILE feature.
857E2fsprogs will now support filesystems with 64-bit sized files.
858
859Added support for the EXT2_FEATURE_COMPAT_DIR_PREALLOC feature.
860
Theodore Ts'o21d53851998-02-21 03:14:50 +0000861Added new program "e2label", contributed by Andries Brouwer. E2label
862provides an easy-to-use interface to modify the filesystem label.
863
Theodore Ts'oa4b2d3c1998-04-03 16:12:25 +0000864Fixed bug so that lsattr -v works instead of producing a core dump.
865
Theodore Ts'o21d53851998-02-21 03:14:50 +0000866Fixed a minor bug in mke2fs so that all groups with bad superblock
867backup blocks are printed (not just the first one).
Theodore Ts'oa4b2d3c1998-04-03 16:12:25 +0000868
869Mke2fs will check the size of the device, and if the user specifies a
870filesystem size larger than the apparent size of the device it will
871print a warning message and ask if the user wants to proceed.
872
Theodore Ts'oc9833a61998-07-05 19:37:53 +0000873E2fsck has a new option -C, which sends completion information to the
874specified file descriptor. For the most part, this is intended for
875programs to use, although -C 0 will print a spinning character to the
876stdout device, which may be useful for users who want to see something
877happening while e2fsck goes about its business.
878
Theodore Ts'o21d53851998-02-21 03:14:50 +0000879Fixed a bug in e2fsck which could cause a core dump when it needs to
880expand the /lost+found directory, and sometimes the bitmaps haven't
881been merged in. Also fixed a related bug where ext2fs_write_dir_block
882was used to write out a non-directory block. (Which would be bad on a
883non-Intel platform with byte swapping going on.)
884
885Fixed bug in e2fsck where it would print a "programming error" message
886instead of correctly identifying where a bad block was in used when
887the bad block was in a non-primary superblock or block group
888descriptor. Also fixed a related bug when sparse superblocks are in
889use and there is a bad block where a superblock or block group
890descriptor would have been in a group that doesn't include a
891superblock.
892
893Fixed a bug in e2fsck (really in libext2fs's dblist function) where if
894the block group descriptor table is corrupt, it was possible to try to
895allocate a huge array, fail, and then abort e2fsck.
896ext2fs_get_num_dirs() now sanity checks the block group descriptor,
897and subsitutes reasonable values if the descriptors are obviously bogus.
898
899If e2fsck finds a device file which has the immutable flag set and the
900i_blocks beyond the normal device number are non-zero, e2fsck will
901offer to remove it, since it's probably caused by garbage in the inode
902table.
903
904When opening a filesystem, e2fsck specially checks for the EROFS error
905code, and prints a specific error message to the user which is more
906user friendly.
907
908If the filesystem revision is too high, change the e2fsck to print
909that this is either because e2fsck is out of date, or because the
910superblock is corrupt.
911
912E2fsck now checks for directories that have duplicate '.' and '..'
913entries, and fixes this corruption.
914
915E2fsck no longer forces a sync of the filesystem (with attendant sleep
916calls) at all times. The ext2fs_flush() function now performs a sync
917only if it needed to write data blocks to disk.
918
919Fixed a minor bug in e2fsck's pass1b's file cloning function, where
920certain errors would not be properly reported.
921
922Updated and expanded a few points in the man pages which users
923complained wheren't explicit enough.
924
925Added special case byte-swapping code if compiling on the PowerPC, to
926accomodate the strange big-endian variant of the ext2 filesystem that
927was previously used on the PowerPC port.
928
929
930Programmer's notes:
931-------------------
932
933Removed C++ keywords from the ext2fs libraries so that it could be
934compiled with C++.
935
936E2fsck's internal organization has now been massively reorganized so
937that pass*.c don't have any printf statements. Instead, all problems
938are reported through the fix_problem() abstraction interface. E2fsck
939has also been revamped so that it can be called as a library from a
940application.
941
942Added new fileio primitives in libext2fs for reading and writing
943files on an unmounted ext2 filesystem. This interface is now used by
944debugfs.
945
946Added a new libext2fs function for mapping logical block numbers of
947a file to a physical block number.
948
949Added a new libext2fs function, ext2fs_alloc_block(), which allocates
950a block, zeros it, and updates the filesystem accounting records
951appropriately.
952
953Added a new libext2fs function, ext2fs_set_bitmap_padding(), which
954sets the padding of the bitmap to be all one's. Used by e2fsck pass 5.
955
956The libext2fs functions now use a set of memory allocation wrapper
957functions: ext2fs_get_mem, ext2fs_free_mem, and ext2fs_resize_mem,
958instead of malloc, free, and resize. This makes it easier for us to
959be ported to strange environments where malloc, et. al. aren't
960necessarily available.
961
962Change the libext2fs fucntion to return ext2-specific error codes
963(EXT2_DIR_EXISTS and EXT2_DB_NOT_FOUND, for example) instead of using
964and depending on the existence of system error codes (such as EEXIST
965and ENOENT).
966
967Renamed io.h to ext2_io.h to avoid collision with other OS's header
968files.
969
970Add protection against ext2_io.h and ext2fs.h being included multiple
971times.
972
973The types used for memory lengths, etc. have been made more portable.
974In generla, the code has been made 16-bit safe. Added Mark
975Habersack's contributed DOS disk i/o routines.
976
977Miscellaneous portability fixes, including not depending on char's
978being signed.
979
980The io_channel structure has a new element, app_data, which is
981initialized by the ext2fs routines to contain a copy of the filesystem
982handle.
983
984ext2fs_check_directory()'s callback function may now return the error
985EXT2_ET_CALLBACK_NOTHANDLED if it wishes ext2fs_check_directory() to
986really do the checking, despite the presence of the callback function.
987
988
Theodore Ts'obc210071997-06-17 05:41:36 +0000989E2fsprosg 1.11 (June 17, 1997)
990==============================
991
992Fixed e2fsck to detect (previously ignored) conflicts between the
993superblock or block group descriptors and block bitmaps, inode
994bitmaps, and inode tables.
995
996Fixed bug in e2fsck so that when the message printed out when a block
997or inode bitmap conflicts with other data, it has the correct group
998number.
999
1000Fixed bug in e2fsck and mke2fs where the blocksize wasn't being passed
1001to badblocks. This meant that not all of the filesystem was being
1002tested for bad blocks!
1003
1004Fixed an array boundary overrun case which cropped up in
1005ext2fs_badblocks_list_test when a user tried running "mke2fs -c
1006-b 4096".
1007
1008Adjusted the number of columns printed by mke2fs when displaying the
1009superblock backups to avoid running over 80 columns when making a
Theodore Ts'o21d53851998-02-21 03:14:50 +00001010really big filesystem.
Theodore Ts'obc210071997-06-17 05:41:36 +00001011
1012Fixed up the man pages for e2fsck, debugfs, badblocks, chattr,
1013dumpe2fs, fsck, mke2fs, and tune2fs (typos and other minor grammar
1014fixes), thanks to some suggestions from Bill Hawes (whawes@star.net).
1015
1016Programmer's notes:
1017-------------------
1018
1019Fixed install rule in lib/ss so that ss_err.h is actually getting
1020installed.
1021
1022Fixed bug in ext2fs_copy_bitmap; the destination bitmap wasn't getting
1023bassed back to the caller.
1024
1025Fixed bug in ext2fs_inode_scan_goto_blockgroup; it had not been
1026setting the current inode number (which meant this function wasn't
1027working at all).
1028
1029Fixed bug in ext2fs_resize_generic_bitmap; it had not be zeroing all
1030blocks in the bitmap when increasing the size of the bitmap.
1031
1032Changed the initial number of blocks allocated by ext2fs_init_dblist()
1033to be more realistic.
1034
1035Added a new function ext2fs_allocate_group_table, which sets up the
1036group descriptor information (and allocates inode and block bitmaps,
1037and inode tables for a particular group). The function was created by
1038factoring out code form ext2fs_allocate_tables().
1039
1040Added a new function ext2fs_move_blocks which takes a bitmap of the
1041blocks to be moved, and moves them to another location on the
1042boardboard.
1043
1044Make the unix_io channel's io_channel_flush implementation calls sync()
1045to to flush the kernel buffers to disk.
1046
1047Added a new function ext2fs_dblist_count returns the number of
1048directory blocks in dblist.
1049
1050
Theodore Ts'oae851481997-04-29 18:13:24 +00001051E2fsprogs 1.10 (April 24, 1997)
1052===============================
1053
1054Mke2fs once again defaults to creating revision #0 filesystems, since
1055people were complaining about breaking compatibility with 1.2 kernels.
1056Warning messages were added to the mke2fs and tune2fs man pages that
1057the sparse superblock option isn't supported by most kernels yet (1.2
1058and 2.0 both don't support parse superblocks.)
1059
1060Added new flag to mke2fs, -R <raid options>, which allows the user to
1061tell mke2fs about the RAID configuration of the filesystem. Currently
1062the only supported raid option is "stride" which specifies the width
1063of the RAID stripe.
1064
1065Fixed bug in e2fsck where pass1b would bomb out if there were any
1066blocks marked bad in the inode table.
1067
1068Fixed rare bug in mke2fs where if the user had a very unlucky number
1069of blocks in a filesystem (probability less than .002) the resulting
1070filesystem would be corrupt in the last block group.
1071
1072Fixed bug where if e2fsck tried to allocate a block to fix a
1073filesystem corruption problem and the filesystem had no free blocks,
1074ext2fs_new_block() would loop forever.
1075
1076The configure script now checks explicitly to see if "-static" works,
1077since that can't be assumed to be true --- RedHat doesn't install
1078libc-static by default.
1079
1080Fixed bug in libext2's block iterator functions where under some
1081cirmcustances, file with holes would cause the bcount parameter to the
1082callback function to be incorrect. This bug didn't affect any of
1083e2fsprogs programs, but it was discovered by Paul Mackerras, the
1084author of the PPC boot loader.
1085
1086Removed use of static variables to store the inode cache in libext2fs.
1087This caused problems if more than one filesystem was accessed via
1088libext2fs (static variables in libraries are generally a bad idea).
1089Again, this didn't affect e2fsprogs programs, but it was discovered by
1090Paul Mackerras.
1091
1092Fixed minor bugs and version code drift to assure that e2fsprogs 1.10
1093will compile cleanly with 1.2.13 kernels (even with a.out shared
1094libraries!)
1095
1096Programmer's notes:
1097-------------------
1098
1099Added new functions to duplicate an ext2 filesystem handle, and its
1100associated substructure. New functions: ext2fs_dup_handle(),
1101ext2fs_copy_dblist(), ext2fs_badblocks_copy(), ext2fs_copy_bitmap().
1102Other structures, such as the io_channel and the inode_cache, now have
1103a ref count so that they only get freed when they are no longer used
1104by any filesystem handle. (These functions were added as part of the
1105development effort for an ext2 resizer).
1106
Theodore Ts'o2ecc6fe1997-04-29 17:57:00 +00001107E2fsprogs 1.09 (April 14, 1997)
1108===============================
1109
1110Fixed bug in mke2fs (really in lib/ext2fs/initialize.c) which was
1111accidentally introduced in the 1.08 release. The overhead calculation
1112was accidentally removed, which caused ext2fs_initialize() to not
1113notice when the filesystem size needed to be adjusted down because
1114there wasn't enough space in the last block group.
1115
1116Fixed bug in version parsing library routine; it was always parsing
1117the library version string, instead of using the passed-in string.
1118
1119Clarified chattr man page.
1120
Theodore Ts'o24757fa1997-04-29 17:39:27 +00001121E2fsprogs 1.08 (April 10, 1997)
1122===============================
1123
1124E2fsck 1.07 was very slow when checking very large filesystems with a
1125lot of files that had hard links (i.e., news spools). This was fixed
1126by seriously revamping the icount abstraction. Added a formal test
1127suite for the icount abstraction.
1128
1129Debugfs now has a "-l" option to the "ls" command, which lists the
1130inode number, permissions, owner, group, size, and name of the files
1131in the directory.
1132
1133Fix a bug in e2fsck where when a directory had its blocks moved to
1134another location during the pass 1b processing, the directory block
1135list wasn't updated, so pass 2 wouldn't check (and correct) the
1136correct directory block.
1137
1138E2fsck will now treat inodes which contain blocks which are claimed by
1139the filesystem metadata by treating them as multiply claimed blocks.
1140This way, the data in those blocks can be copied to a new block during
1141the pass 1b--1d processing.
1142
1143E2fsck will attempt to determine the correct superblock number and
1144display it in the diagnostic and warning messages if possible.
1145
1146Add support for a new (incompatible) feature, "sparse_super". This
1147feature reduces the number of blocks which contain copies of backup
1148superblocks and block group descriptors. (It is only an incompatible
1149feature because of a bug in ext2_free_blocks.) mke2fs and tune2fs now
1150support a new -s option; e2fsck will recognize filesystems built with
1151this feature turned on.
1152
1153E2fsck now checks the library to make sure is the correct version,
1154using new library functions. (This helps to diagnose incorrectly
1155installed e2fsprogs distributions.)
1156
1157Dumpe2fs now prints more information; its now prints the the
1158filesystem revision number, the filesystem sparse_super feature (if
1159present), the block ranges for each block group, and the offset from
1160the beginning of the block group.
1161
1162Mke2fs now distributes the inode and block bitmap blok so that the
1163won't be concentrated in one or two disks in RAID/striping setups.
1164Also, if the user chooses a 2k or 4k block group, mke2fs will try to
1165choose the largest blocks per group that be chosen. (For 2k blocks,
1166you can have up to 16384 blocks/group; for 4k blocks, you can have up
1167to 32768 blocks/group.) Previously mke2fs would not allow
1168specification of more than 8192 blocks per group, even if you were
1169using a 2k or 4k block group.
1170
1171Programmer's notes:
1172-------------------
1173
1174Added a new function ext2fs_create_icount2() which takes a "hint"
1175argument. This hint argument presets the icount array with the list
1176of inodes which actually need to be in the icount array. This really
1177helps to speed up e2fsck.
1178
1179Added a new function ext2fs_icount_validate() which checks the rep
1180invariant for the icount structure. This is used mostly for testing.
1181
1182The error mesasage given when a bad inode number is passed to
1183test_generic_bitmap to reflect EXT2FS_TEST_ERROR (instead of
1184EXT2FS_UNMARK_ERROR).
1185
1186Added a new function ext2fs_set_dir_block which sets the block of a
1187dblist entry, given the directory inode and blockcnt.
1188
1189Added a new function ext2fs_get_library_version() which returns the
1190current library version, and ext2fs_parse_version_string() which
1191returns a version number based on a e2fsprogs version string.
1192
1193The icount functions will return EINVAL if the passed in inode number
1194is out of bounds.
1195
Theodore Ts'o21c84b71997-04-29 16:15:03 +00001196E2fsprogs 1.07 (March 9, 1997)
1197==============================
1198
1199E2fsck is now uses much less memory when checking really large
1200filesystems (or rather, filesystems with a large number of inodes).
1201Previously a filesystem with 1 million inodes required 4 megabytes of
1202memory to store inode count statistics; that storage requirement has
1203now been reduced to roughly half a megabyte.
1204
1205E2fsck can now properly deal with bad blocks appearing inside the
1206inode table. Instead of trying to relocate the inode table (which
1207often failed because there wasn't enough space), the inodes in the bad
1208block are marked as in use.
1209
1210E2fsck will automatically try to use the backup superblocks if the
1211primary superblocks have a bad magic number or have missing meta-data
1212blocks (or meta-data blocks which are out of range).
1213
1214E2fsck's pass 3 has been made more efficient; most noticeable on
1215filesystems with a very large number of directories.
1216
1217Completely revamped e2fsck's system of printing problem reports. It
1218is now table driven, to make them more easily customizeable and
1219extendable. Error messages which can be printed out during preen mode
1220are now one line long.
1221
1222Fixed e2fsck's filesystem swapping code so that it won't try to swap
1223fast symbolic links or deleted files.
1224
1225Fixed e2fsck core dumping when fixing a filesystem which has no
1226directories (not even a root directory).
1227
1228Added a check to e2fsck to make sure that the length of every
1229directory entry is a multiple of 4 (since the kernel complains if it
1230isn't).
1231
1232Added a check to e2fsck to make sure that a directory entry isn't a
1233link to the root directory, since that isn't allowed.
1234
1235Added a check to e2fsk to now make sure the '.' and '..' directory
1236entries are null terminated, since the 2.0 kernel requires it.
1237
1238Added check to write_bitmaps() to make sure the superblock doesn't get
1239trashed if the inode or block bitmap is marked as being block zero.
1240
1241Added checking of the new feature set fields in the superblock, to
1242avoid dealing with new filesystem features that this package wasn't
1243set up to handle.
1244
1245Fixed a fencepost error in ext2fs_new_block() which would occasionally
1246try to allocate a block beyond the end of a filesystem.
1247
1248When the UUID library picks a random IEEE 802 address (because it
1249can't find one from a network card), it sets the multicast bit, to
1250avoid conflicting with a legitimate IEEE 802 address.
1251
1252Mke2fs now sets the root directory's owner to be the real uid of the
1253user running mke2fs. If the real uid is non-zero, it also sets
1254the group ownership of the root directory to be the real group-id of
1255the user running mke2fs.
1256
1257Mke2fs now has more intelligent error checking when it is given a
1258non-existent device.
1259
1260When badblocks is given the -vv option, it now updates the block that
1261it is currently testing on every block.
1262
1263Fixed a bug in fsck where it wouldn't modify the PATH envirnoment
1264currently correctly if PATH wasn't already set.
1265
1266Shared libraries now built with dependencies. This allows the shared
1267library files to be used with dlopen(); it also makes the transition
1268to libc 6 easier, since ld.so can tell which libc a particular shared
1269library expects to use.
1270
1271Programmer's notes:
1272-------------------
1273
1274Added new abstraction (defined in dblist.c) for maintaining a list of
1275blocks which belongs to directories. This is used in e2fsck and other
1276programs which need to iterate over all directories.
1277
1278Added new functions which test to see if a contiguous range of blocks
1279(or inodes) are available. (ext2fs_*_bitmap_range).
1280
1281Added new function (ext2_inode_has_valid_blocks) which returns true if
1282an inode has valid blocks. (moved from e2fsck code).
1283
1284Added new function (ext2fs_allocate_tables) which allocates the
1285meta-data blocks as part of initializing a filesystem. (moved from
1286mke2fs code).
1287
1288Added a new I/O manager for testing purposes. It will either allow a
1289program to intercept I/O requests, or print debugging messages to
1290trace the activity of a program using the I/O manager.
1291
1292The badblocks_list functions now store the bad blocks in a sorted
1293order, and use a binary search to speed up badblocks_list_test.
1294
1295The inode scan function ext2fs_get_next_inode() may now return a soft
1296error returns: MISSING_INODE_TABLE and BAD_BLOCK_IN_INODE_TABLE in
1297those cases where part of an inode table is missing or there is a bad
1298block in the inode table.
1299
1300Added a new function (ext2fs_block_iterate2) which adds new arguments to
1301the callback function to return a pointer (block and offset) to the
1302reference of the block.
1303
1304Added new function (ext2fs_inode_scan_goto_blockgroup) which allows an
1305application to jump to a particular block group while doing an inode
1306scan.
1307
1308The badblocks list functions were renamed from badblocks_* to
1309ext2fs_badblocks_*. Backwards compatibility functions are available
1310for now, but programs should be modified to use the new interface.
1311
1312Some of the library functions were reorganized into separate files to
1313reduce the size of some programs which statically link against the
1314ext2 library.
1315
1316Put in some miscellaneous fixes for the Alpha platform.
1317
Theodore Ts'o5c576471997-04-29 15:29:49 +00001318
1319E2fsprogs 1.06 (October 7, 1996)
1320================================
1321
1322Fixed serious bug in e2fsck: if the block descriptors are bad, don't
1323smash the backup copies in ext2fs_close(). (The problem was that when
1324e2fsck -p discovered the problem, while it was closing the filesystem
1325and exiting, it was also blowing away the backup superblocks on the
1326disk, which was less than friendly.) We now make it the case that we
1327only write out the backup superblock and the back block descriptors if
1328the filesystem is completely free from problems.
1329
1330Fixed a bug in block_interate in the lib/ext2fs library which caused
1331e2fsck to fail on GNU Hurd-created filesystems.
1332
1333Add support for Linux/FT's bootloader, which actually uses
1334EXT2_BOOT_LOADER, and sets its mode bits which caused e2fsck to want
1335to clear the inode.
1336
1337Add support for the "A" (no atime update) attribute. (Note: this
1338attribute is not yet in production kernels.)
1339
1340The test suite is not automatically run when doing a "make all" from
1341the top level directory. Users should manually run "make check" if
1342they wish to run the test suite.
1343
1344Upon a preenhalt(), make the printed message more explicit that
1345running e2fsck "MANAULLY" means without the -p or -a options.
1346
1347In e2fsck, if a disconnected inode is zero-length, offer to clear it
1348instead of offering to connect it to lost+found.
1349
1350In e2fsck, if a filesystem was just unmounted uncleanly, and needs
1351e2fsck to be run over it, change e2fsck to explicitly display this
1352fact.
1353
1354For dumpe2fs and e2fsck, cause the -V option to print out which
1355version of the ext2fs library is actually getting used. (This will
1356help detect mismatches of using a 1.06 utility with a 1.05 library,
1357etc.)
1358
1359Programmers' notes:
1360-------------------
1361
1362EXT2_SWAP_BYTES was changed to EXT2_FLAG_SWAP_BYTES, which better fits
1363the naming convention.
1364
1365In ext2fs_initialize(), make sure the description for the inode bitmap
1366is correctly initialize.
1367
1368Fixed minor type typo in ext2fs_allocate_generic_bitmap();
1369
Theodore Ts'ofc6d9d51997-04-29 14:51:31 +00001370E2fsprogs 1.05 (September 7, 1996)
1371==================================
1372
1373Add support for new fields in the ext2 superblock --- volume name,
1374volume UUID, and last mounted field. Dumpe2fs displays these fields,
1375tune2fs and mke2fs allows you to set them. E2fsck will automatically
1376generate a UUID for those volumes that don't have them.
1377
1378Put in support for e2fsck to recognize HURD specific ext2 features ---
1379most notably, the translator block. The e2fsprogs tools will now use
1380the creator_os field in the superblock to correctly handle different
1381OS-specific variants of the ext2 filesystem.
1382
1383E2fsck now fixes inodes which have a the deletion time set, but which
1384have a non-zero i_link_count field by offering to clear the deletion
1385time. Previously e2fsck assumed that the inode was deleted (per 0.3c
1386ext2 kernel behavior) and offered to unlink the file.
1387
1388If e2fsck sets the clean bit, but nothing else, set the exit code
1389FSCK_NONDESTRUCT. After all, e2fsck did fix a filesystem error --- it
1390set the filesystem valid bit when it was previously cleared. :-) This
1391was needed to make the HURD fsck driver happy.
1392
1393If the user refuses to attach an unattached inode, e2fsck will no
1394longer set the inode's link count. Otherwise, the inode would end up
1395getting marked as unused, which might cause loss of data later.
1396
1397Make the message issued by e2fsck when the superblock is corrupt less
1398confusing for users. It now mentions that another reason for the
1399"corrupt superblock" message might be that the partition might not be
1400an ext2 filesystem at all (it might swap, msdos filesystem, ufs, etc.)
1401
1402Make the libext2 library more robuest so that e2fsck won't coredump on
1403an illegal superblock where the blocksize is zero. (f_crashdisk is
1404the test case).
1405
1406By default, create filesystems where the default checkinterval is 6
1407months (180 days). Linux servers can be robust enough that 20 reboots
1408can be a long, long time.
1409
1410Added configure flag --enable-old-bitops, which forces the bitops to
1411use the old (native) bitmask operations. By default on the sparc
1412platform, the standard ext2 bit ordering is now used.
1413
1414Added a new feature to e2fsck to byte-swap filesystems; this can be
1415used to convert old m68k filesystems to use the standard byte-order
1416storage for the superblock, inodes, and directory blocks. This
1417function is invoked by using the '-s' option to e2fsck.
1418
1419Debugfs's "dump" command has been enhanced so that it writes out the
1420exact size of the file so that the nulls at the end of the file are
1421eliminated. The command also accept a new "-p" option which will
1422attempt preserve to preserve the ownernship, permissions, and
1423file modification/access times.
1424
1425Debugfs has two new options, -f and -R. The -R option allows the user
1426to execute a single debugfs command from the command line. The -f
1427option allows the user to specify a "command file" containing debugfs
1428commands which will get executed.
1429
1430Dumpe2fs now pretty prints the check interval, instead of just
1431printing the check interval as a number of seconds.
1432
1433Fix bugs in debugfs: the params command when no filesystem is opened
1434no longer causes a core dump. It is now possible to unlink a file
1435when a pathame containing a '/' is specified.
1436
1437Tune2fs has a new -C option which sets the number of times the
1438filesystem has been mounted.
1439
1440Fix the chattr '-v' option so that it actually works. Chattr was
1441being buggy about the -v option parsing.
1442
1443Programmers' notes:
1444-------------------
1445
1446The directory lib/uuid contains a set of library routines to generate
1447DCE compatible UUIDs.
1448
1449Extended ext2fs_namei() to handle symbolic links. Added new function
1450ext2fs_nami_follow() which will follow last symbolic link in the case
1451where the pathname points to a sym link.
1452
1453The ext2fs_block_iterate function will now return the HURD translator
1454block, if present. The new flag BLOCK_FLAG_DATA_ONLY will cause the
1455iterator to return data blocks only. The ext2fs.h file now defines
1456constants BLOCK_COUNT_IND, BLOCK_COUNT_DIND, BLOCK_COUNT_TIND, and
1457BLOCK_COUNT_TRANSLATOR, which are the magic values passed in the block
1458count field of the iterator callback function.
1459
1460The test script driver now takes an optional second argument, which is
1461the test case to be run. This allows you to run a test case without
1462needing to run the entire test suite.
1463
1464On Linux ELF systems, install the .so files in the correct places
1465(/usr/lib). The .so files must be stored in the same directory as the
1466.a files.
1467
1468Fixed miscellaneous HURD compilation issues with header file being
1469included in the right order.
1470
1471Fixed debugfs so that it resets optind to zero, not one, since setting
1472optind to zero is more correct.
1473
1474
Theodore Ts'oa4d09611997-04-29 14:28:00 +00001475E2fsprogs 1.04 (May 16, 1996)
1476=============================
1477
1478First "official" (1.03 was a limited release only) to support building
1479e2fsprogs under Linux 2.0 kernels (as well as late model 1.3 and 1.99
1480kernels).
1481
1482This package includes a RPM specs file, that it can be built using the
1483RedHat Package Manager.
1484
1485E2fsck now prints a hint that if there are lots of incorrectly located
1486inode bitmaps, block bitmaps, and inode table blocks, the user might
1487want to try using e2fsck -b 8193 first, to see if that fares any
1488better.
1489
1490For ext2 filesystem written with the hurd, debugfs will now print out
1491the translator field when printing an inode structure.
1492
1493Lots of miscellaneous linking/installation cleanups:
1494
1495 Libraries are now linked using a relative pathname, instead of
1496 relying on -L working correct. It doesn't, in many cases, including
1497 current versions of GNU ld. This guarantees that the build tree is
1498 linking with the right libraries, instead of the ones installed in
1499 /usr/lib.
1500
1501 Header files, man pages, and the et/ss shell scripts are now
1502 generated using a custom substitution script, instead of relying on
1503 the configure script. This prevents needless recompilation of
1504 files; in addition, the custom substitution script is much faster.
1505
1506 e2fsck may now be linked dynamically, by using the
1507 --enable-dynamic-e2fsck flag to configure. This is not recommended,
1508 since it increases e2fsck's dependence on other files, but some
1509 people need to save disk space, and other critical programs on their
1510 systems were being linked dynamically anyway.
1511
1512 Programs such as fsck which didn't need to be linked against
1513 libext2fs (or mke2fs which didn't need to be linked against libe2p)
1514 only link against libraries they actually need. Otherwise, those
1515 programs would require the presense of libraries that otherwise
1516 could be removed from a rescuse diskette.
1517
1518 The ss include files are now installed correctly so they can
1519 actually be used by another package.
1520
1521 If the profiling libraries are built, they are now installed on a
1522 "make install-libs".
1523
1524
Theodore Ts'o7f88b041997-04-26 14:48:50 +00001525E2fsprogs 1.03 (March 27, 1996)
1526===============================
1527
1528Change the m68k bit numbering for bitmasks to match the bit numbering
1529used by all other ext2 implementations. (This change was requested by
1530the m68k kernel development team.)
1531
1532Support (in-development) filesystem format revision which supports
1533(among other things) dynamically sized inodes.
1534
1535Fixed a bug in the ext2 library so that an intelligent error is
1536returned if mke2fs is run with a ridiculously small number of blocks
1537for a partition.
1538
1539Fixed a bug in the ext2 library which required that the device be
1540openable in read/write mode in order to determine its size. This
1541caused e2fsck -n to require read/write access when it was not
1542previously necessary.
1543
1544Fixed a bug in e2fsck which casued it to occasionally fail the test
1545suite depending on which version of the floating point library it was
1546using.
1547
1548Fixed a bug in e2fsck so that it now halts with a fatal error when
1549certain superblock consistency checks fail. Previously it continued
1550running e2fsck, with some potential confusing/damaging consequences.
1551
1552Added new flag to fsck which allows the root to be checked in parallel
1553with other filesytems. This is not the safest thing in the world to
1554do, but some system administrators really wanted it.
1555
Theodore Ts'ofc6d9d51997-04-29 14:51:31 +00001556Fixed -Wall flames in lib/ss.
1557
Theodore Ts'o74becf31997-04-26 14:37:06 +00001558
1559E2fsprogs 1.02 (January 16, 1996)
1560=================================
1561
1562Fix to allow e2fsprogs to be compiled on recent 1.3 (pl45+) kernels.
1563
1564Change e2fsck to print statistics of how many non-contiguous files are
1565on the system. Note that a file which is larger than 8k blocks, it is
1566guaranteed to be non-contiguous.
1567
1568In mke2fs, print a warning message if a user tries to format a whole
1569disk (/dev/hda versus /dev/hda1). If a user really wants to format a
1570whole disk, the -F (force) option forces mke2fs to format a whole disk
1571as a filesytem.
1572
1573Fix a bug in fsck where in some cases it might start checking
1574partitions in the next pass before it finishes checking partitions in
1575the current pass. This still won't cause two partitions on the same
1576disk will be checked, so it's rarely a problem in real life.
1577
1578Patch lsattr so that it won't hang when checking a named pipe.
1579
1580Minor compilation fixes:
1581 * Fix the order of libraries that were linked in debugfs.
1582 * Allow the sources to be compiled with -ansi turned on.