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History log of /src/sbin/resize_ffs/resize_ffs.c
RevisionDateAuthorComments
 1.58  07-Jan-2023  chs ufs: fixed signed/unsigned bugs affecting large file systems

Apply these commits from FreeBSD:

commit e870d1e6f97cc73308c11c40684b775bcfa906a2
Author: Kirk McKusick <mckusick@FreeBSD.org>
Date: Wed Feb 10 20:10:35 2010 +0000

This fix corrects a problem in the file system that treats large
inode numbers as negative rather than unsigned. For a default
(16K block) file system, this bug began to show up at a file system
size above about 16Tb.

To fully handle this problem, newfs must be updated to ensure that
it will never create a filesystem with more than 2^32 inodes. That
patch will be forthcoming soon.

Reported by: Scott Burns, John Kilburg, Bruce Evans
Followup by: Jeff Roberson
PR: 133980
MFC after: 2 weeks

commit 81479e688b0f643ffacd3f335b4b4bba460b769d
Author: Kirk McKusick <mckusick@FreeBSD.org>
Date: Thu Feb 11 18:14:53 2010 +0000

One last pass to get all the unsigned comparisons correct.


In additional to the changes from FreeBSD, this commit includes quite a few
related changes to appease -Wsign-compare.
 1.57  17-Nov-2022  chs branches: 1.57.2;
Restore backward compatibility of UFS2 with previous NetBSD releases by
disabling support in UFS2 for extended attributes (including ACLs).
Add a new variant of UFS2 called "UFS2ea" that does support extended attributes.
Add new fsck_ffs operations "-c ea" and "-c no-ea" to convert file systems
from UFS2 to UFS2ea and vice-versa (both of which delete all existing extended
attributes in the process).
 1.56  08-Apr-2022  andvar fix various typos, mainly in comments, but also log messages, docs, game text.
 1.55  24-May-2020  jmcneill Use getfsspecname and getrawdiskname so we can resize by NAME= label.
 1.54  21-Apr-2019  maya wether -> whether
 1.53  09-Oct-2017  mlelstv branches: 1.53.4;
Fix computation of left-over fragments also for ufs2.

Fixes PR 52600.
 1.52  01-Oct-2017  christos PR/52590: David H. Gutteridge: Minor documentation improvements
 1.51  01-Oct-2017  mlelstv - More fixes to use 64bit offsets.
- Compute left-over fragments also for FFS2.
 1.50  30-Sep-2017  kre Fix the syntax (pointed out by David H. Gutteridge on source-changes-d).
Fix the build...
 1.49  30-Sep-2017  riastradh Use int64_t for loop index so we don't iterate forever/until trap.
 1.48  28-Sep-2017  sborrill Fix the most obvious integer overflow errors which can lead to superblock
corruption. Thanks to riastradh@

For example:

# df /data
Filesystem 1K-blocks Used Avail %Cap Mounted on
/dev/ccd0d -19974939099004 -19982708701532 -737868756431824584 0% /data

# dumpfs -s /dev/rccd0d
file system: /dev/rccd0d
format FFSv2
endian little-endian
location 65536 (-b 128)
magic 19540119 time Thu Sep 28 13:18:10 2017
superblock location 65536 id [ 595fa4a5 3363fe37 ]
cylgrp dynamic inodes FFSv2 sblock FFSv2 fslevel 5
nbfree 242773148 ndir 211185 nifree 650798800 nffree
215448
ncg 13933 size 2647654400 blocks -4993734774751
bsize 32768 shift 15 mask 0xffff8000
fsize 4096 shift 12 mask 0xfffff000
frag 8 shift 3 fsbtodb 3
bpg 23754 fpg 190032 ipg 46848
minfree 5% optim time maxcontig 2 maxbpg 4096
symlinklen 120 contigsumsize 2
maxfilesize 0x000800800805ffff
nindir 4096 inopb 128
avgfilesize 16384 avgfpdir 64
sblkno 24 cblkno 32 iblkno 40 dblkno 2968
sbsize 4096 cgsize 32768
csaddr 35792 cssize 225280
cgrotor 0 fmod 0 ronly 0 clean 0x01
wapbl version 0x1 location 2 flags 0x0
wapbl loc0 6354693888 loc1 131072 loc2 512 loc3 3
flags none
fsmnt /data
volname swuid 0
 1.47  24-Aug-2016  dholland branches: 1.47.6;
Fix handling of ffsv2 inode initialization. Retires PR 51116.
 1.46  17-Mar-2016  christos fix pasto
 1.45  17-Mar-2016  christos Appease gcc-5 from phone@
 1.44  06-Apr-2015  jmcneill if the -p flag is specified, display a progress bar while growing the file-system
 1.43  06-Apr-2015  mlelstv factor out geometry calculation and use this also in CheckOnly mode.
be a bit more verbose in Verbose mode.
 1.42  06-Apr-2015  mlelstv Handle case in grow() where last cylinder group is too small for ufs2.
Align with code in shrink().
 1.41  29-Mar-2015  chopps - Add -c to check to see if grow/shrink is required
- Divide by DEV_BSIZE when returning size of file.
- Update manpage
 1.40  28-Mar-2015  riastradh Use `!= -1' instead of `== 0' out of paranoia.
 1.39  28-Mar-2015  riastradh Make get_dev_size work on regular files too.
 1.38  23-Jun-2013  dholland branches: 1.38.6;
Stick ffs_ in front of the following macros:
fragstoblks()
blkstofrags()
fragnum()
blknum()

to finish the job of distinguishing them from the lfs versions, which
Christos renamed the other day.

I believe this is the last of the overtly ambiguous exported symbols
from ffs... or at least, the last of the ones that conflicted with lfs.
ffs still pollutes the C namespace very broadly (as does ufs) and this
needs quite a bit more cleanup.

XXX: boo on macros with lowercase names. But I'm not tackling that just yet.
 1.37  23-Jun-2013  dholland Stick ffs_, ext2_, chfs_, filecore_, cd9660_, or mfs_ in front of
the following symbols so as to disambiguate fully. (Christos already
did the lfs ones.)

lblkno
lblktosize
lfragtosize
numfrags
blkroundup
fragroundup
 1.36  23-Jun-2013  dholland fsbtodb() -> FFS_FSBTODB(), EXT2_FSBTODB(), or MFS_FSBTODB()
dbtofsb() -> FFS_DBTOFSB() or EXT2_DBTOFSB()

(Christos already did the lfs ones a few days back)
 1.35  19-Jun-2013  dholland Rename ambiguous macros:
MAXDIRSIZE -> UFS_MAXDIRSIZE or LFS_MAXDIRSIZE
NINDIR -> FFS_NINDIR, EXT2_NINDIR, LFS_NINDIR, or MFS_NINDIR
INOPB -> FFS_INOPB, LFS_INOPB
INOPF -> FFS_INOPF, LFS_INOPF
blksize -> ffs_blksize, ext2_blksize, or lfs_blksize
sblksize -> ffs_blksize

These are not the only ambiguously defined filesystem macros, of
course, there's a pile more. I may not have found all the ambiguous
definitions of blksize(), too, as there are a lot of other things
called 'blksize' in the system.
 1.34  22-Jan-2013  dholland Stuff UFS_ in front of a few of ufs's symbols to reduce namespace
pollution. Specifically:
ROOTINO -> UFS_ROOTINO
WINO -> UFS_WINO
NXADDR -> UFS_NXADDR
NDADDR -> UFS_NDADDR
NIADDR -> UFS_NIADDR
MAXSYMLINKLEN -> UFS_MAXSYMLINKLEN
MAXSYMLINKLEN_UFS[12] -> UFS[12]_MAXSYMLINKLEN (for consistency)

Sort out ext2fs's misuse of NDADDR and NIADDR; fortunately, these have
the same values in ext2fs and ffs.

No functional change intended.
 1.33  20-Apr-2012  christos branches: 1.33.2;
fix cast in local macro
 1.32  27-Aug-2011  christos branches: 1.32.2;
PR/45301: Julian Fagir: make clear that the unit is sectors and fix a typo.
While there, use errx, and sizeof(*var) instead of sizeof(type)
 1.31  15-Aug-2011  dholland Fix another dodgy switch-jump.
 1.30  15-Aug-2011  dholland WARNS = 4
 1.29  15-Aug-2011  dholland Add missing __RCSID().
 1.28  15-Aug-2011  dholland Whitespace.
 1.27  15-Aug-2011  dholland Avoid switch-jumping into the middle of an if. Compiler output is unchanged.
 1.26  15-Aug-2011  dholland Minor KNF.
 1.25  05-Jan-2011  riz Add support for byteswapped file systems (big-endian on little-endian
host, and vice versa), to fix PR#44203.

Add support for growing (but not yet shrinking) UFS2 file systems. Partially
addresses PR#44205.

While I'm here, reformat the code for closer adherence to KNF.

Fairly extensive testing was performed, using the shortly-to-be-committed
updated ATF tests. Patch posted to tech-userlevel on 21 December 2010,
no comments.
 1.24  14-Dec-2010  wiz filesystem -> file system.
 1.23  14-Dec-2010  riz Be explicit about byteswapped and ffsv2 file systems being currently
unsupported, while catching up to some changes in my local tree which
will hopefully support them at some time in the future.

Also, change "device" variable to "special", to reflect the fact
that resize_ffs will work on a plain file.
 1.22  14-Dec-2010  riz Don't special-case v1 superblocks - especially with an incorrect
calculation.
 1.21  12-Dec-2010  riz Remove bogus check which is not actually testing anything useful,
and depending on file system data, can actually be a false error.

Fixes what I was actually testing for in bin/44209, though the
actual problem was not what I originally described.
 1.20  12-Dec-2010  mhitch Add support for old ffsv1 superblocks. After reading an old superblock,
copy appropriate data to where they are expected in the updated superblock.
When writing the updated superblock, move the updated values back to the
old ffsv1 superblock locations. Also check for old superblock format when
updating the last cylinder group and adjust cg_old_ncyl appropriately.
Derived from how mksf sets them. Should address PR bin/44209.
 1.19  08-Dec-2010  riz If we're operating on a plain file instead of a device, ftruncate() it
to ensure it's been properly extended. Clears up some problems at certain
blocksizes which showed up during creation of atf tests, which is done
using file-backed file systems.
 1.18  07-Dec-2010  riz As currently written, writeat() expects disk blocks, not fs blocks, so
when testing that the last sector of the new size is writeable, make
sure we're ACTUALLY writing in the new space, instead of possibly
overwriting something in the existing fs.

Discovered while writing tests - tests which uncovered file corruption at
certain block sizes.

XXX should rewrite writeat() to expect fs blocks instead of disk blocks.

OK mlelstv@
 1.17  02-Dec-2010  riz Use howmany() instead of "/" to calculate the number of cylinders for
the changed file system, so as to not drop a partial cylinder at the
end. Fixes PR bin/44177.
 1.16  01-Dec-2010  riz Do not look for a v1 file system at SBLOCK_UFS2, as this gets the wrong
superblock (first alternate) for a file system with 64k blocks.
Spotted by mhitch@.
 1.15  01-Dec-2010  riz Clean up this file:

- sync usage comment with current reality
- sort includes
- wrap lines
- use EXIT_FAILURE consistently
- make error messages consistent: Cannot->Can't
- Remove "Old FFSv1 macros" in favor of system macros in ufs/ffs/fs.h .
Leave dblksize() because it uses the on-disk dinode structure.

More cleanup is needed.
No functional changes intended.
 1.14  29-Nov-2010  riz Restore a couple of checks for updating the cg_old_ncyl value which
were commented out with XXX and a notation to "fix once fsck is fixed."
fsck seems to have been fixed for this particular issue sometime in the
7 years since the code was brought into the tree.

Update cg_old_niblk instead of cg_ni_blk, since this tool
currently supports ffsv1 only.

With these two changes, I can grow a file system and have the result
be clean according to fsck_ffs. Shrinking still results in an unclean
file system.

OK mhitch@

While I'm here, fix a typo in an error message.
 1.13  30-Oct-2010  haad Add resize_ffs tool to build, change default behaviour to grow filesystem
to device size. Add parameter -s to specify size if user want to shrink
filesystem.

Apply some KNF, remove dead unused code.

Oked by christos@.
 1.12  15-Dec-2007  perry branches: 1.12.10;
convert __attribute__s to applicable cdefs.h macros
 1.11  15-Dec-2007  perry include sys/cdefs.h so that __attribute__ can be fixed later
 1.10  08-Jul-2007  bouyer branches: 1.10.4; 1.10.6;
writeat() also expect offsets in DEV_BSIZE unit. This and the previous commit
should fix PR bin/35560. Thanks to Michael L. Hitch for pointing me at the
PR.
 1.9  05-Jul-2007  bouyer readat() expects the offset in DEV_BSIZE units. This made resize_ffs find the
filesystem on a vnd partition for me. It did grow the filesystem, and after
a fsck -f on the partition to fix a few superblock inconsistencies, all
looks good.
 1.8  03-Jun-2005  snj Fix a typo in a comment.
 1.7  21-Mar-2004  dsl Dunno why this code is playing 'hunt the superblock', but stop it
finding an ffsv1 sb at 64k.
Also stop it playing with fs that have 'FS_FLAGS_UPDATED' set.
It certainly doesn't act on that falg, and my guess is that it is
playing the pre-ffsv2 fs.
Fixes part of PR kern/24809
 1.6  05-Jan-2004  jmmv Homogenize usage messages: make the 'usage' word all lowercase, as this seems
to be the most common practice in our tree.
 1.5  26-Jul-2003  salo netbsd.org->NetBSD.org
 1.4  03-Apr-2003  christos make this compile again.
 1.3  10-Mar-2003  wiz Correct program name in comments.
 1.2  21-Feb-2003  martin This program deals with on-disk structures.
s/daddr_t/int32_t/g for now (UFS2 will need other changes as well).
 1.1  21-Feb-2003  jtk Preliminary version of resize_ffs, based on der Mouse's fsresize tool.
I didn't have time to clean it up completely before my legal status
w.r.t. open source projects goes into limbo for a while. Other
developers are encouraged to play with the tool and get it into
release-worthy shape.

TODO list (see TODO file)

* verify it builds on -current, put it into release lists/etc. and src/sbin/Makefile
(built & tested on 1.6.1)
* make it ask questions before doing any work (confirm)
* create regression test suite (see discussions on tech-kern and
developers) and fix any bugs
* verify conversion to ANSI C didn't break anything
* port to UFS2
 1.10.6.1  27-Dec-2007  mjf Sync with HEAD.
 1.10.4.1  09-Jan-2008  matt sync with HEAD
 1.12.10.1  18-Nov-2011  sborrill Pull up the following revisions(s) (requested by riz in ticket #1690):
distrib/sets/lists/base/mi patch
distrib/sets/lists/man/mi patch
sbin/Makefile patch
sbin/resize_ffs/Makefile patch
sbin/resize_ffs/TODO patch
sbin/resize_ffs/resize_ffs.8 patch
sbin/resize_ffs/resize_ffs.c patch

Fix resize_ffs(8) so that growing and shrinking all FFSv1
(including byteswapped) and growing FFSv2 file systems is supported.
 1.32.2.3  22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.32.2.2  23-Jan-2013  yamt sync with head
 1.32.2.1  23-May-2012  yamt sync with head.
 1.33.2.3  20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.33.2.2  23-Jun-2013  tls resync from head
 1.33.2.1  25-Feb-2013  tls resync with head
 1.38.6.3  23-Oct-2017  snj Pull up following revision(s) (requested by sborrill in ticket #1516):
sbin/resize_ffs/resize_ffs.8: revision 1.18
sbin/resize_ffs/resize_ffs.c: revision 1.48-1.53
Fix the most obvious integer overflow errors which can lead to superblock
corruption. Thanks to riastradh@
--
Use int64_t for loop index so we don't iterate forever/until trap.
--
Fix the syntax (pointed out by David H. Gutteridge on source-changes-d).
Fix the build...
--
- More fixes to use 64bit offsets.
- Compute left-over fragments also for FFS2.
--
PR/52590: David H. Gutteridge: Minor documentation improvements
--
Fix computation of left-over fragments also for ufs2.
Fixes PR 52600.
 1.38.6.2  10-Sep-2016  snj branches: 1.38.6.2.2;
Pull up following revision(s) (requested by dholland in ticket #1242):
sbin/resize_ffs/resize_ffs.c: revision 1.47
Fix handling of ffsv2 inode initialization. Retires PR 51116.
 1.38.6.1  06-Aug-2015  snj branches: 1.38.6.1.2; 1.38.6.1.4;
Pull up following revision(s) (requested by skrll in ticket #909):
distrib/sets/lists/etc/mi: revision 1.237
distrib/sets/lists/tests/mi: revision 1.613
distrib/utils/embedded/conf/armv7.conf: revisions 1.1, 1.2
distrib/utils/embedded/conf/beagleboard.conf: delete
distrib/utils/embedded/conf/evbarm.conf: revisions 1.21, 1.22
distrib/utils/embedded/conf/rpi.conf: revisions 1.28, 1.29
distrib/utils/embedded/conf/rpi_inst.conf: revisions 1.7, 1.8
distrib/utils/embedded/conf/usermode.conf: revision 1.5
distrib/utils/embedded/conf/x86.conf: revision 1.5
distrib/utils/embedded/files/resize_disklabel: revision 1.1
distrib/utils/embedded/mkimage: revisions 1.49, 1.55-1.59
etc/defaults/rc.conf: revision 1.133
etc/etc.evbarm/Makefile.inc: revisions 1.72, 1.76
etc/rc.d/Makefile: revision 1.93 via patch
etc/rc.d/resize_root: revisions 1.1-1.3
etc/rc.d/root: revision 1.5
sbin/resize_ffs/Makefile: revision 1.5
sbin/resize_ffs/resize_ffs.8: revisions 1.14-1.16
sbin/resize_ffs/resize_ffs.c: revisions 1.39-1.44
share/man/man5/rc.conf.5: revision 1.158, 1.159
tests/sbin/resize_ffs/Makefile: revision 1.4
tests/sbin/resize_ffs/common.sh: revision 1.14
tests/sbin/resize_ffs/t_check.sh: revision 1.1
tests/sbin/resize_ffs/t_grow.sh: revision 1.9
tests/sbin/resize_ffs/t_grow_swapped.sh: revision 1.3
tests/sbin/resize_ffs/t_shrink.sh: revision 1.8
tests/sbin/resize_ffs/t_shrink_swapped.sh: revision 1.2
fix image building:
- round up the total size of the disk image
- fix fdisk offset for netbsd ffs images
--
Make get_dev_size work on regular files too.
--
Use `!= -1' instead of `== 0' out of paranoia.
--
- Add -c to check to see if grow/shrink is required
- Divide by DEV_BSIZE when returning size of file.
- Update manpage
--
New sentence, new line. Sort option descriptions.
--
Add resize_root boot operation. If resize_root=YES in rc.conf then
the system attempts to resize the root file system to fill it's
partition prior to mounting read-write. Useful for things like AMI
file system images. May eventually be used by arm images after
coming up with similar solution for increasing the parition size.
--
- Add new tests for -c check flag in resize_ffs
--
Bump date for previous.
it's -> its
--
Handle case in grow() where last cylinder group is too small for ufs2.
Align with code in shrink().
--
factor out geometry calculation and use this also in CheckOnly mode.
be a bit more verbose in Verbose mode.
--
Add support for auto-growing the root partition. Enable it for rpi.img.
--
initialize resize before pulling in board config
--
add KEYWORD: interactive, honour resize_root_flags and
resize_root_postcmd rc vars
--
if the -p flag is specified, display a progress bar while growing the
file-system
--
show resize_ffs progress bar when resizing root partition
--
fix typo in previous; pass -y unconditionally to resize_ffs, not -p
--
Rename beagleboard.img to armv7.img. The new image includes the same
kernels as beagleboard.img plus support for Raspberry Pi 2, ODROID-C1,
Cubieboard2, Cubietruck, Hummingbird A31, and Banana Pi.
--
Properly spell X' name. From X(7):
The X.Org Foundation requests that the following names be
used when
referring to this software:
X
X Window System
X Version 11
X Window System, Version 11
X11
--
Add some documentation:
Tell what this does, and what it expects from conf files
--
Cleanup: make_filesystems is not used any longer, purge remains
--
More cleanup:
Instead of first overwriting the *_evbarm functions with own code,
and then calling them from the regular functions, directly put the
code into the regular functions.
No more functions from evbarm.conf are used now.
Some variables are still used!
--
define TOOL_MKUBOOTIMAGE for mkimage
--
fix mkubootimage
 1.38.6.2.2.1  23-Oct-2017  snj Pull up following revision(s) (requested by sborrill in ticket #1516):
sbin/resize_ffs/resize_ffs.8: revision 1.18
sbin/resize_ffs/resize_ffs.c: revision 1.48-1.53
Fix the most obvious integer overflow errors which can lead to superblock
corruption. Thanks to riastradh@
--
Use int64_t for loop index so we don't iterate forever/until trap.
--
Fix the syntax (pointed out by David H. Gutteridge on source-changes-d).
Fix the build...
--
- More fixes to use 64bit offsets.
- Compute left-over fragments also for FFS2.
--
PR/52590: David H. Gutteridge: Minor documentation improvements
--
Fix computation of left-over fragments also for ufs2.
Fixes PR 52600.
 1.38.6.1.4.1  18-Jan-2017  skrll Sync with netbsd-5
 1.38.6.1.2.1  23-Oct-2017  snj Pull up following revision(s) (requested by sborrill in ticket #1516):
sbin/resize_ffs/resize_ffs.8: revision 1.18
sbin/resize_ffs/resize_ffs.c: revision 1.48-1.53
Fix the most obvious integer overflow errors which can lead to superblock
corruption. Thanks to riastradh@
--
Use int64_t for loop index so we don't iterate forever/until trap.
--
Fix the syntax (pointed out by David H. Gutteridge on source-changes-d).
Fix the build...
--
- More fixes to use 64bit offsets.
- Compute left-over fragments also for FFS2.
--
PR/52590: David H. Gutteridge: Minor documentation improvements
--
Fix computation of left-over fragments also for ufs2.
Fixes PR 52600.
 1.47.6.1  24-Oct-2017  snj Pull up following revision(s) (requested by sborrill in ticket #308):
sbin/resize_ffs/resize_ffs.8: revision 1.18
sbin/resize_ffs/resize_ffs.c: revision 1.48-1.53
Fix the most obvious integer overflow errors which can lead to superblock
corruption. Thanks to riastradh@
--
Use int64_t for loop index so we don't iterate forever/until trap.
--
Fix the syntax (pointed out by David H. Gutteridge on source-changes-d).
Fix the build...
--
- More fixes to use 64bit offsets.
- Compute left-over fragments also for FFS2.
--
PR/52590: David H. Gutteridge: Minor documentation improvements
--
Fix computation of left-over fragments also for ufs2.
Fixes PR 52600.
 1.53.4.1  10-Jun-2019  christos Sync with HEAD
 1.57.2.1  13-May-2023  martin Pull up following revision(s) (requested by chs in ticket #160):

usr.sbin/makefs/ffs/ffs_alloc.c: revision 1.31
sbin/tunefs/tunefs.c: revision 1.58
sbin/fsck_ffs/setup.c: revision 1.105
sbin/fsck_ffs/pass5.c: revision 1.56
usr.sbin/makefs/ffs.c: revision 1.74
usr.sbin/makefs/ffs/mkfs.c: revision 1.42
usr.sbin/makefs/Makefile: revision 1.40
sys/ufs/ffs/fs.h: revision 1.71
sbin/fsdb/fsdb.c: revision 1.54
sbin/resize_ffs/resize_ffs.c: revision 1.58
sbin/fsck_ffs/pass4.c: revision 1.29
usr.sbin/makefs/ffs/ffs_extern.h: revision 1.9
sbin/newfs/mkfs.c: revision 1.133
sys/ufs/ffs/ffs_alloc.c: revision 1.172
sbin/fsck_ffs/pass1b.c: revision 1.24
usr.sbin/dumpfs/dumpfs.c: revision 1.68
sys/ufs/ffs/ffs_extern.h: revision 1.88
usr.sbin/quotacheck/quotacheck.c: revision 1.51
sys/ufs/ffs/ffs_subr.c: revision 1.54
sbin/fsck_ffs/main.c: revision 1.91
sbin/fsck_ffs/pass1.c: revision 1.63

ufs: fixed signed/unsigned bugs affecting large file systems

Apply these commits from FreeBSD:
commit e870d1e6f97cc73308c11c40684b775bcfa906a2
Author: Kirk McKusick <mckusick@FreeBSD.org>
Date: Wed Feb 10 20:10:35 2010 +0000
This fix corrects a problem in the file system that treats large
inode numbers as negative rather than unsigned. For a default
(16K block) file system, this bug began to show up at a file system
size above about 16Tb.
To fully handle this problem, newfs must be updated to ensure that
it will never create a filesystem with more than 2^32 inodes. That
patch will be forthcoming soon.
Reported by: Scott Burns, John Kilburg, Bruce Evans
Followup by: Jeff Roberson
PR: 133980
MFC after: 2 weeks

commit 81479e688b0f643ffacd3f335b4b4bba460b769d
Author: Kirk McKusick <mckusick@FreeBSD.org>
Date: Thu Feb 11 18:14:53 2010 +0000
One last pass to get all the unsigned comparisons correct.

In additional to the changes from FreeBSD, this commit includes quite a few
related changes to appease -Wsign-compare.

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