fix always true conditional by removing the address-of operator.

found by GCC 12.

PR/56643: Paul Goyette: Disable the last block adjustment for now. It seems
to break restore.

PR/56270: Matthias Scheler: dump fails on ffsv1: Zero c_extsize since ffsv1
does not support extended attributes.

Add external attribute dumping and restoring support from FreeBSD.
Does not fully work yet, attributes are being saved and restored correctly,
but don't appear in the restored files somehow.

Use getfsspecname() to fill the filesystem argument in dumpdates.
While here, make sure that the error strings terminate with newline
consistently, and add a function that adds the system error string.

- mark Exit() __dead
- bump a buffer size to avoid possible truncation
- adding missing fallthru comment

branches: 1.50.20; 1.50.28;
handle new lfs split

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.

branches: 1.48.18; 1.48.24;
We don't need to dump WAPBL log files - don't dump files with SF_LOG
flag set, and document this.

branches: 1.47.20; 1.47.24;
Change LFCNWRAP{STOP,GO} to make them more suitable for snapshotting; in
particular, the caller can now choose whether to wait for the condition
to be met, and if the caller of LFCNWRAPSTOP dies or otherwise closes
the descriptor, the filesystem is started again. Updated the ckckp
regression test to use the new semantics.

dump_lfs(8) now uses the fcntls to implement LFS-style snapshotting through
the -X flag, addressing PR#33457 albeit not using fss(4). Fixed a couple
other problems with dump_lfs that manifested themselves during testing.

Don't use cast expressions as lvalues as newer versions of gcc warn.

64 bit inode changes

Add ffs internal snapshots. Written by Marshall Kirk McKusick for FreeBSD.

- Not enabled by default. Needs kernel option FFS_SNAPSHOT.
- Change parameters of ffs_blkfree.
- Let the copy-on-write functions return an error so spec_strategy
may fail if the copy-on-write fails.
- Change genfs_*lock*() to use vp->v_vnlock instead of &vp->v_lock.
- Add flag B_METAONLY to VOP_BALLOC to return indirect block buffer.
- Add a function ffs_checkfreefile needed for snapshot creation.
- Add special handling of snapshot files:
Snapshots may not be opened for writing and the attributes are read-only.
Use the mtime as the time this snapshot was taken.
Deny mtime updates for snapshot files.
- Add function transferlockers to transfer any waiting processes from
one lock to another.
- Add vfsop VFS_SNAPSHOT to take a snapshot and make it accessible through
a vnode.
- Add snapshot support to ls, fsck_ffs and dump.

Welcome to 2.0F.

Approved by: Jason R. Thorpe <thorpej@netbsd.org>

Make the computation of estimated blocks work for frag size != 1024.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22308, verified by myself.

Fix byteswapping issues in dirindir(); mostly from Enami Tsugutomo.

Swap the right disk block in mapdirs() for the UFS1 case. From Enami.

Since the size passed in may be different from the fs blocksize, just
allocate a buffer each time instead of using a static one.

dblk should be static. Fixes PR 21020, by Geoff Wing. Patch supplied
by him.

Add support for UFS2. UFS2 is an enhanced FFS, adding support for
64 bit block pointers, extended attribute storage, and a few
other things.

This commit does not yet include the code to manipulate the extended
storage (for e.g. ACLs), this will be done later.

Originally written by Kirk McKusick and Network Associates Laboratories for
FreeBSD.

Bump daddr_t to 64 bits. Replace it with int32_t in all places where
it was used on-disk, so that on-disk formats remain the same.
Remove ufs_daddr_t and ufs_lbn_t for the time being.

Add fix from FreeBSD traverse.c 1.16:
Files in subdirectories of directories that have the nodump flag set
are sometimes incorrectly being dumped.

The problem arises because the subdirectory only gets its entry
cleared from usedinomap if it is also present in dumpinomap, and it is
the absence of a directory in usedinomap that internally indicates
that the directory is under the effects of UF_NODUMP (either directly
or inherited).

FreeBSD PR: 32414
Submitted by: David C Lawrence <tale@dd.org>

unifdef sunos

fix -Wshadow warnings

s/filesystem/file system/dump.h

* improve parsing of file-systems-to-dump when a path is given:
- if it's a path to an unmounted file-system listed in /etc/fstab, use
that instead of assuming the user wanted a subtree dump of the parent
directory. this restores the behaviour of dump before the subtree
dumping code went in.
- if it's a path to a mounted file-system which is not in /etc/fstab,
use the info from getmntinfo(3). previously, dump would choke.
* implement error checked malloc(), calloc(), strdup(), and use
appropriately (some of the calloc()s weren't being checked)
* use 'file-system' instead of 'filesystem' in the man page

unifdef !__STDC__ (missed in previous)

knf to ansi

branches: 1.28.6;
Working version of aborted dump{,_lfs} join.

Back out changes made on the 29th, not at all the changes I intended to commit.
(I don't know how I did it though ... I'll figure it out tonight.)
I'll reapply this, in a working form, this evening.

Adapt dump(8) to use filestore-independent (but still ufs-specific)
replacements for NINDIR, fsbtodb, etc. Create dump_lfs by adding a few
LFS-filestore-specific routines. As described in PR#8317.

branches: 1.25.2;
Avoid byte overflow in block estimate for large files

branches: 1.24.2;
Implement a read cache, as announced on tech-userlevel. Default is 32k
read buffer size, 512 buffer or 15% of the user memory. Can be changed
with the -k and -s options.

Handle "nodump" flag on directories, by not dumping any files or directories
under it. Based on some parts of PR 6705 by Brian Grayson.
In the Makefile, add (commented out) debug options that can be turned on.

fix estimate of blocks for subsets.
fix from Brian Grayson <bgrayson@ece.utexas.edu> in [bin/6607]

from Erik Bertelsen <erik@mediator.uni-c.dk>
{ put } { in } { lots } { of } { these } { to } { shut } { up } { egcs }

Add support for non-native byte order FFS. The dump is in filesystem byte
order, restore already knows how to byteswap dumps.

resolve conflicts from lite-2 import

* cleanup for WARNS=1
* fix use of .Nm
* comment out some unused(?) functions

* Add the ability to dump specific files & directories of a single
filesystem. This uses fts(3) to access the directory structure (and
not the raw device), so the standard access permissions are adhered
to (unlike dumping an entire filesystem, which just requires read
access to the raw disk device).
* Support SIGINFO status reporting.
* Remove now unused variables that previously stored the (e)uid.
* Be more informative in a couple of error messages.

remove use of "register".

patches from Tom I Helbekkmo <tih@nhh.no> to deal with type-size issues,
so this works (better, at least) on 64-bit machines (e.g. alpha).

branches: 1.14.6;
update for posixified stat structure

Back out previous change.

typeof(timeval.tv_sec) != time_t

Fix another bogus cast.

Remove incorrect cast on lseek() return value.

convert to new RCS Id conventions; reduce my headache

Don't mix stat flags and inode flags.

Eliminate uses of some obsolete functions.

Correct typo; IFMT -> S_IFMT.

Fix compatibility with old fastlinks.

Update from 4.4-Lite, with local changes.

change some #ifdef's.

fix for() starting condition in mapfiles()

branches: 1.1.1;
new version from CSRG, via BSDI, with fixes

PR/56643: Paul Goyette: Disable the last block adjustment for now. It seems
to break restore.

PR/56270: Matthias Scheler: dump fails on ffsv1: Zero c_extsize since ffsv1
does not support extended attributes.

Add external attribute dumping and restoring support from FreeBSD.
Does not fully work yet, attributes are being saved and restored correctly,
but don't appear in the restored files somehow.

Use getfsspecname() to fill the filesystem argument in dumpdates.
While here, make sure that the error strings terminate with newline
consistently, and add a function that adds the system error string.

- mark Exit() __dead
- bump a buffer size to avoid possible truncation
- adding missing fallthru comment

branches: 1.50.20; 1.50.28;
handle new lfs split

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.

branches: 1.48.18; 1.48.24;
We don't need to dump WAPBL log files - don't dump files with SF_LOG
flag set, and document this.

branches: 1.47.20; 1.47.24;
Change LFCNWRAP{STOP,GO} to make them more suitable for snapshotting; in
particular, the caller can now choose whether to wait for the condition
to be met, and if the caller of LFCNWRAPSTOP dies or otherwise closes
the descriptor, the filesystem is started again. Updated the ckckp
regression test to use the new semantics.

dump_lfs(8) now uses the fcntls to implement LFS-style snapshotting through
the -X flag, addressing PR#33457 albeit not using fss(4). Fixed a couple
other problems with dump_lfs that manifested themselves during testing.

Don't use cast expressions as lvalues as newer versions of gcc warn.

64 bit inode changes

Add ffs internal snapshots. Written by Marshall Kirk McKusick for FreeBSD.

- Not enabled by default. Needs kernel option FFS_SNAPSHOT.
- Change parameters of ffs_blkfree.
- Let the copy-on-write functions return an error so spec_strategy
may fail if the copy-on-write fails.
- Change genfs_*lock*() to use vp->v_vnlock instead of &vp->v_lock.
- Add flag B_METAONLY to VOP_BALLOC to return indirect block buffer.
- Add a function ffs_checkfreefile needed for snapshot creation.
- Add special handling of snapshot files:
Snapshots may not be opened for writing and the attributes are read-only.
Use the mtime as the time this snapshot was taken.
Deny mtime updates for snapshot files.
- Add function transferlockers to transfer any waiting processes from
one lock to another.
- Add vfsop VFS_SNAPSHOT to take a snapshot and make it accessible through
a vnode.
- Add snapshot support to ls, fsck_ffs and dump.

Welcome to 2.0F.

Approved by: Jason R. Thorpe <thorpej@netbsd.org>

Make the computation of estimated blocks work for frag size != 1024.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22308, verified by myself.

Fix byteswapping issues in dirindir(); mostly from Enami Tsugutomo.

Swap the right disk block in mapdirs() for the UFS1 case. From Enami.

Since the size passed in may be different from the fs blocksize, just
allocate a buffer each time instead of using a static one.

dblk should be static. Fixes PR 21020, by Geoff Wing. Patch supplied
by him.

Add support for UFS2. UFS2 is an enhanced FFS, adding support for
64 bit block pointers, extended attribute storage, and a few
other things.

This commit does not yet include the code to manipulate the extended
storage (for e.g. ACLs), this will be done later.

Originally written by Kirk McKusick and Network Associates Laboratories for
FreeBSD.

Bump daddr_t to 64 bits. Replace it with int32_t in all places where
it was used on-disk, so that on-disk formats remain the same.
Remove ufs_daddr_t and ufs_lbn_t for the time being.

Add fix from FreeBSD traverse.c 1.16:
Files in subdirectories of directories that have the nodump flag set
are sometimes incorrectly being dumped.

The problem arises because the subdirectory only gets its entry
cleared from usedinomap if it is also present in dumpinomap, and it is
the absence of a directory in usedinomap that internally indicates
that the directory is under the effects of UF_NODUMP (either directly
or inherited).

FreeBSD PR: 32414
Submitted by: David C Lawrence <tale@dd.org>

unifdef sunos

fix -Wshadow warnings

s/filesystem/file system/dump.h

* improve parsing of file-systems-to-dump when a path is given:
- if it's a path to an unmounted file-system listed in /etc/fstab, use
that instead of assuming the user wanted a subtree dump of the parent
directory. this restores the behaviour of dump before the subtree
dumping code went in.
- if it's a path to a mounted file-system which is not in /etc/fstab,
use the info from getmntinfo(3). previously, dump would choke.
* implement error checked malloc(), calloc(), strdup(), and use
appropriately (some of the calloc()s weren't being checked)
* use 'file-system' instead of 'filesystem' in the man page

unifdef !__STDC__ (missed in previous)

knf to ansi

branches: 1.28.6;
Working version of aborted dump{,_lfs} join.

Back out changes made on the 29th, not at all the changes I intended to commit.
(I don't know how I did it though ... I'll figure it out tonight.)
I'll reapply this, in a working form, this evening.

Adapt dump(8) to use filestore-independent (but still ufs-specific)
replacements for NINDIR, fsbtodb, etc. Create dump_lfs by adding a few
LFS-filestore-specific routines. As described in PR#8317.

branches: 1.25.2;
Avoid byte overflow in block estimate for large files

branches: 1.24.2;
Implement a read cache, as announced on tech-userlevel. Default is 32k
read buffer size, 512 buffer or 15% of the user memory. Can be changed
with the -k and -s options.

Handle "nodump" flag on directories, by not dumping any files or directories
under it. Based on some parts of PR 6705 by Brian Grayson.
In the Makefile, add (commented out) debug options that can be turned on.

fix estimate of blocks for subsets.
fix from Brian Grayson <bgrayson@ece.utexas.edu> in [bin/6607]

from Erik Bertelsen <erik@mediator.uni-c.dk>
{ put } { in } { lots } { of } { these } { to } { shut } { up } { egcs }

Add support for non-native byte order FFS. The dump is in filesystem byte
order, restore already knows how to byteswap dumps.

resolve conflicts from lite-2 import

* cleanup for WARNS=1
* fix use of .Nm
* comment out some unused(?) functions

* Add the ability to dump specific files & directories of a single
filesystem. This uses fts(3) to access the directory structure (and
not the raw device), so the standard access permissions are adhered
to (unlike dumping an entire filesystem, which just requires read
access to the raw disk device).
* Support SIGINFO status reporting.
* Remove now unused variables that previously stored the (e)uid.
* Be more informative in a couple of error messages.

remove use of "register".

patches from Tom I Helbekkmo <tih@nhh.no> to deal with type-size issues,
so this works (better, at least) on 64-bit machines (e.g. alpha).

branches: 1.14.6;
update for posixified stat structure

Back out previous change.

typeof(timeval.tv_sec) != time_t

Fix another bogus cast.

Remove incorrect cast on lseek() return value.

convert to new RCS Id conventions; reduce my headache

Don't mix stat flags and inode flags.

Eliminate uses of some obsolete functions.

Correct typo; IFMT -> S_IFMT.

Fix compatibility with old fastlinks.

Update from 4.4-Lite, with local changes.

change some #ifdef's.

fix for() starting condition in mapfiles()

branches: 1.1.1;
new version from CSRG, via BSDI, with fixes

PR/56270: Matthias Scheler: dump fails on ffsv1: Zero c_extsize since ffsv1
does not support extended attributes.

Add external attribute dumping and restoring support from FreeBSD.
Does not fully work yet, attributes are being saved and restored correctly,
but don't appear in the restored files somehow.

Use getfsspecname() to fill the filesystem argument in dumpdates.
While here, make sure that the error strings terminate with newline
consistently, and add a function that adds the system error string.

- mark Exit() __dead
- bump a buffer size to avoid possible truncation
- adding missing fallthru comment

branches: 1.50.20; 1.50.28;
handle new lfs split

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.

branches: 1.48.18; 1.48.24;
We don't need to dump WAPBL log files - don't dump files with SF_LOG
flag set, and document this.

branches: 1.47.20; 1.47.24;
Change LFCNWRAP{STOP,GO} to make them more suitable for snapshotting; in
particular, the caller can now choose whether to wait for the condition
to be met, and if the caller of LFCNWRAPSTOP dies or otherwise closes
the descriptor, the filesystem is started again. Updated the ckckp
regression test to use the new semantics.

dump_lfs(8) now uses the fcntls to implement LFS-style snapshotting through
the -X flag, addressing PR#33457 albeit not using fss(4). Fixed a couple
other problems with dump_lfs that manifested themselves during testing.

Don't use cast expressions as lvalues as newer versions of gcc warn.

64 bit inode changes

Add ffs internal snapshots. Written by Marshall Kirk McKusick for FreeBSD.

- Not enabled by default. Needs kernel option FFS_SNAPSHOT.
- Change parameters of ffs_blkfree.
- Let the copy-on-write functions return an error so spec_strategy
may fail if the copy-on-write fails.
- Change genfs_*lock*() to use vp->v_vnlock instead of &vp->v_lock.
- Add flag B_METAONLY to VOP_BALLOC to return indirect block buffer.
- Add a function ffs_checkfreefile needed for snapshot creation.
- Add special handling of snapshot files:
Snapshots may not be opened for writing and the attributes are read-only.
Use the mtime as the time this snapshot was taken.
Deny mtime updates for snapshot files.
- Add function transferlockers to transfer any waiting processes from
one lock to another.
- Add vfsop VFS_SNAPSHOT to take a snapshot and make it accessible through
a vnode.
- Add snapshot support to ls, fsck_ffs and dump.

Welcome to 2.0F.

Approved by: Jason R. Thorpe <thorpej@netbsd.org>

Make the computation of estimated blocks work for frag size != 1024.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22308, verified by myself.

Fix byteswapping issues in dirindir(); mostly from Enami Tsugutomo.

Swap the right disk block in mapdirs() for the UFS1 case. From Enami.

Since the size passed in may be different from the fs blocksize, just
allocate a buffer each time instead of using a static one.

dblk should be static. Fixes PR 21020, by Geoff Wing. Patch supplied
by him.

Add support for UFS2. UFS2 is an enhanced FFS, adding support for
64 bit block pointers, extended attribute storage, and a few
other things.

This commit does not yet include the code to manipulate the extended
storage (for e.g. ACLs), this will be done later.

Originally written by Kirk McKusick and Network Associates Laboratories for
FreeBSD.

Bump daddr_t to 64 bits. Replace it with int32_t in all places where
it was used on-disk, so that on-disk formats remain the same.
Remove ufs_daddr_t and ufs_lbn_t for the time being.

Add fix from FreeBSD traverse.c 1.16:
Files in subdirectories of directories that have the nodump flag set
are sometimes incorrectly being dumped.

The problem arises because the subdirectory only gets its entry
cleared from usedinomap if it is also present in dumpinomap, and it is
the absence of a directory in usedinomap that internally indicates
that the directory is under the effects of UF_NODUMP (either directly
or inherited).

FreeBSD PR: 32414
Submitted by: David C Lawrence <tale@dd.org>

unifdef sunos

fix -Wshadow warnings

s/filesystem/file system/dump.h

* improve parsing of file-systems-to-dump when a path is given:
- if it's a path to an unmounted file-system listed in /etc/fstab, use
that instead of assuming the user wanted a subtree dump of the parent
directory. this restores the behaviour of dump before the subtree
dumping code went in.
- if it's a path to a mounted file-system which is not in /etc/fstab,
use the info from getmntinfo(3). previously, dump would choke.
* implement error checked malloc(), calloc(), strdup(), and use
appropriately (some of the calloc()s weren't being checked)
* use 'file-system' instead of 'filesystem' in the man page

unifdef !__STDC__ (missed in previous)

knf to ansi

branches: 1.28.6;
Working version of aborted dump{,_lfs} join.

Back out changes made on the 29th, not at all the changes I intended to commit.
(I don't know how I did it though ... I'll figure it out tonight.)
I'll reapply this, in a working form, this evening.

Adapt dump(8) to use filestore-independent (but still ufs-specific)
replacements for NINDIR, fsbtodb, etc. Create dump_lfs by adding a few
LFS-filestore-specific routines. As described in PR#8317.

branches: 1.25.2;
Avoid byte overflow in block estimate for large files

branches: 1.24.2;
Implement a read cache, as announced on tech-userlevel. Default is 32k
read buffer size, 512 buffer or 15% of the user memory. Can be changed
with the -k and -s options.

Handle "nodump" flag on directories, by not dumping any files or directories
under it. Based on some parts of PR 6705 by Brian Grayson.
In the Makefile, add (commented out) debug options that can be turned on.

fix estimate of blocks for subsets.
fix from Brian Grayson <bgrayson@ece.utexas.edu> in [bin/6607]

from Erik Bertelsen <erik@mediator.uni-c.dk>
{ put } { in } { lots } { of } { these } { to } { shut } { up } { egcs }

Add support for non-native byte order FFS. The dump is in filesystem byte
order, restore already knows how to byteswap dumps.

resolve conflicts from lite-2 import

* cleanup for WARNS=1
* fix use of .Nm
* comment out some unused(?) functions

* Add the ability to dump specific files & directories of a single
filesystem. This uses fts(3) to access the directory structure (and
not the raw device), so the standard access permissions are adhered
to (unlike dumping an entire filesystem, which just requires read
access to the raw disk device).
* Support SIGINFO status reporting.
* Remove now unused variables that previously stored the (e)uid.
* Be more informative in a couple of error messages.

remove use of "register".

patches from Tom I Helbekkmo <tih@nhh.no> to deal with type-size issues,
so this works (better, at least) on 64-bit machines (e.g. alpha).

branches: 1.14.6;
update for posixified stat structure

Back out previous change.

typeof(timeval.tv_sec) != time_t

Fix another bogus cast.

Remove incorrect cast on lseek() return value.

convert to new RCS Id conventions; reduce my headache

Don't mix stat flags and inode flags.

Eliminate uses of some obsolete functions.

Correct typo; IFMT -> S_IFMT.

Fix compatibility with old fastlinks.

Update from 4.4-Lite, with local changes.

change some #ifdef's.

fix for() starting condition in mapfiles()

branches: 1.1.1;
new version from CSRG, via BSDI, with fixes

Add external attribute dumping and restoring support from FreeBSD.
Does not fully work yet, attributes are being saved and restored correctly,
but don't appear in the restored files somehow.

Use getfsspecname() to fill the filesystem argument in dumpdates.
While here, make sure that the error strings terminate with newline
consistently, and add a function that adds the system error string.

- mark Exit() __dead
- bump a buffer size to avoid possible truncation
- adding missing fallthru comment

branches: 1.50.20; 1.50.28;
handle new lfs split

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.

branches: 1.48.18; 1.48.24;
We don't need to dump WAPBL log files - don't dump files with SF_LOG
flag set, and document this.

branches: 1.47.20; 1.47.24;
Change LFCNWRAP{STOP,GO} to make them more suitable for snapshotting; in
particular, the caller can now choose whether to wait for the condition
to be met, and if the caller of LFCNWRAPSTOP dies or otherwise closes
the descriptor, the filesystem is started again. Updated the ckckp
regression test to use the new semantics.

dump_lfs(8) now uses the fcntls to implement LFS-style snapshotting through
the -X flag, addressing PR#33457 albeit not using fss(4). Fixed a couple
other problems with dump_lfs that manifested themselves during testing.

Don't use cast expressions as lvalues as newer versions of gcc warn.

64 bit inode changes

Add ffs internal snapshots. Written by Marshall Kirk McKusick for FreeBSD.

- Not enabled by default. Needs kernel option FFS_SNAPSHOT.
- Change parameters of ffs_blkfree.
- Let the copy-on-write functions return an error so spec_strategy
may fail if the copy-on-write fails.
- Change genfs_*lock*() to use vp->v_vnlock instead of &vp->v_lock.
- Add flag B_METAONLY to VOP_BALLOC to return indirect block buffer.
- Add a function ffs_checkfreefile needed for snapshot creation.
- Add special handling of snapshot files:
Snapshots may not be opened for writing and the attributes are read-only.
Use the mtime as the time this snapshot was taken.
Deny mtime updates for snapshot files.
- Add function transferlockers to transfer any waiting processes from
one lock to another.
- Add vfsop VFS_SNAPSHOT to take a snapshot and make it accessible through
a vnode.
- Add snapshot support to ls, fsck_ffs and dump.

Welcome to 2.0F.

Approved by: Jason R. Thorpe <thorpej@netbsd.org>

Make the computation of estimated blocks work for frag size != 1024.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22308, verified by myself.

Fix byteswapping issues in dirindir(); mostly from Enami Tsugutomo.

Swap the right disk block in mapdirs() for the UFS1 case. From Enami.

Since the size passed in may be different from the fs blocksize, just
allocate a buffer each time instead of using a static one.

dblk should be static. Fixes PR 21020, by Geoff Wing. Patch supplied
by him.

Add support for UFS2. UFS2 is an enhanced FFS, adding support for
64 bit block pointers, extended attribute storage, and a few
other things.

This commit does not yet include the code to manipulate the extended
storage (for e.g. ACLs), this will be done later.

Originally written by Kirk McKusick and Network Associates Laboratories for
FreeBSD.

Bump daddr_t to 64 bits. Replace it with int32_t in all places where
it was used on-disk, so that on-disk formats remain the same.
Remove ufs_daddr_t and ufs_lbn_t for the time being.

Add fix from FreeBSD traverse.c 1.16:
Files in subdirectories of directories that have the nodump flag set
are sometimes incorrectly being dumped.

The problem arises because the subdirectory only gets its entry
cleared from usedinomap if it is also present in dumpinomap, and it is
the absence of a directory in usedinomap that internally indicates
that the directory is under the effects of UF_NODUMP (either directly
or inherited).

FreeBSD PR: 32414
Submitted by: David C Lawrence <tale@dd.org>

unifdef sunos

fix -Wshadow warnings

s/filesystem/file system/dump.h

* improve parsing of file-systems-to-dump when a path is given:
- if it's a path to an unmounted file-system listed in /etc/fstab, use
that instead of assuming the user wanted a subtree dump of the parent
directory. this restores the behaviour of dump before the subtree
dumping code went in.
- if it's a path to a mounted file-system which is not in /etc/fstab,
use the info from getmntinfo(3). previously, dump would choke.
* implement error checked malloc(), calloc(), strdup(), and use
appropriately (some of the calloc()s weren't being checked)
* use 'file-system' instead of 'filesystem' in the man page

unifdef !__STDC__ (missed in previous)

knf to ansi

branches: 1.28.6;
Working version of aborted dump{,_lfs} join.

Back out changes made on the 29th, not at all the changes I intended to commit.
(I don't know how I did it though ... I'll figure it out tonight.)
I'll reapply this, in a working form, this evening.

Adapt dump(8) to use filestore-independent (but still ufs-specific)
replacements for NINDIR, fsbtodb, etc. Create dump_lfs by adding a few
LFS-filestore-specific routines. As described in PR#8317.

branches: 1.25.2;
Avoid byte overflow in block estimate for large files

branches: 1.24.2;
Implement a read cache, as announced on tech-userlevel. Default is 32k
read buffer size, 512 buffer or 15% of the user memory. Can be changed
with the -k and -s options.

Handle "nodump" flag on directories, by not dumping any files or directories
under it. Based on some parts of PR 6705 by Brian Grayson.
In the Makefile, add (commented out) debug options that can be turned on.

fix estimate of blocks for subsets.
fix from Brian Grayson <bgrayson@ece.utexas.edu> in [bin/6607]

from Erik Bertelsen <erik@mediator.uni-c.dk>
{ put } { in } { lots } { of } { these } { to } { shut } { up } { egcs }

Add support for non-native byte order FFS. The dump is in filesystem byte
order, restore already knows how to byteswap dumps.

resolve conflicts from lite-2 import

* cleanup for WARNS=1
* fix use of .Nm
* comment out some unused(?) functions

* Add the ability to dump specific files & directories of a single
filesystem. This uses fts(3) to access the directory structure (and
not the raw device), so the standard access permissions are adhered
to (unlike dumping an entire filesystem, which just requires read
access to the raw disk device).
* Support SIGINFO status reporting.
* Remove now unused variables that previously stored the (e)uid.
* Be more informative in a couple of error messages.

remove use of "register".

patches from Tom I Helbekkmo <tih@nhh.no> to deal with type-size issues,
so this works (better, at least) on 64-bit machines (e.g. alpha).

branches: 1.14.6;
update for posixified stat structure

Back out previous change.

typeof(timeval.tv_sec) != time_t

Fix another bogus cast.

Remove incorrect cast on lseek() return value.

convert to new RCS Id conventions; reduce my headache

Don't mix stat flags and inode flags.

Eliminate uses of some obsolete functions.

Correct typo; IFMT -> S_IFMT.

Fix compatibility with old fastlinks.

Update from 4.4-Lite, with local changes.

change some #ifdef's.

fix for() starting condition in mapfiles()

branches: 1.1.1;
new version from CSRG, via BSDI, with fixes

Use getfsspecname() to fill the filesystem argument in dumpdates.
While here, make sure that the error strings terminate with newline
consistently, and add a function that adds the system error string.

- mark Exit() __dead
- bump a buffer size to avoid possible truncation
- adding missing fallthru comment

branches: 1.50.20;
handle new lfs split

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.

branches: 1.48.18; 1.48.24;
We don't need to dump WAPBL log files - don't dump files with SF_LOG
flag set, and document this.

branches: 1.47.20; 1.47.24;
Change LFCNWRAP{STOP,GO} to make them more suitable for snapshotting; in
particular, the caller can now choose whether to wait for the condition
to be met, and if the caller of LFCNWRAPSTOP dies or otherwise closes
the descriptor, the filesystem is started again. Updated the ckckp
regression test to use the new semantics.

dump_lfs(8) now uses the fcntls to implement LFS-style snapshotting through
the -X flag, addressing PR#33457 albeit not using fss(4). Fixed a couple
other problems with dump_lfs that manifested themselves during testing.

Don't use cast expressions as lvalues as newer versions of gcc warn.

64 bit inode changes

Add ffs internal snapshots. Written by Marshall Kirk McKusick for FreeBSD.

- Not enabled by default. Needs kernel option FFS_SNAPSHOT.
- Change parameters of ffs_blkfree.
- Let the copy-on-write functions return an error so spec_strategy
may fail if the copy-on-write fails.
- Change genfs_*lock*() to use vp->v_vnlock instead of &vp->v_lock.
- Add flag B_METAONLY to VOP_BALLOC to return indirect block buffer.
- Add a function ffs_checkfreefile needed for snapshot creation.
- Add special handling of snapshot files:
Snapshots may not be opened for writing and the attributes are read-only.
Use the mtime as the time this snapshot was taken.
Deny mtime updates for snapshot files.
- Add function transferlockers to transfer any waiting processes from
one lock to another.
- Add vfsop VFS_SNAPSHOT to take a snapshot and make it accessible through
a vnode.
- Add snapshot support to ls, fsck_ffs and dump.

Welcome to 2.0F.

Approved by: Jason R. Thorpe <thorpej@netbsd.org>

Make the computation of estimated blocks work for frag size != 1024.

Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22308, verified by myself.

Fix byteswapping issues in dirindir(); mostly from Enami Tsugutomo.

Swap the right disk block in mapdirs() for the UFS1 case. From Enami.

Since the size passed in may be different from the fs blocksize, just
allocate a buffer each time instead of using a static one.

dblk should be static. Fixes PR 21020, by Geoff Wing. Patch supplied
by him.

Add support for UFS2. UFS2 is an enhanced FFS, adding support for
64 bit block pointers, extended attribute storage, and a few
other things.

This commit does not yet include the code to manipulate the extended
storage (for e.g. ACLs), this will be done later.

Originally written by Kirk McKusick and Network Associates Laboratories for
FreeBSD.

Bump daddr_t to 64 bits. Replace it with int32_t in all places where
it was used on-disk, so that on-disk formats remain the same.
Remove ufs_daddr_t and ufs_lbn_t for the time being.

Add fix from FreeBSD traverse.c 1.16:
Files in subdirectories of directories that have the nodump flag set
are sometimes incorrectly being dumped.

The problem arises because the subdirectory only gets its entry
cleared from usedinomap if it is also present in dumpinomap, and it is
the absence of a directory in usedinomap that internally indicates
that the directory is under the effects of UF_NODUMP (either directly
or inherited).

FreeBSD PR: 32414
Submitted by: David C Lawrence <tale@dd.org>

unifdef sunos

fix -Wshadow warnings

s/filesystem/file system/dump.h

* improve parsing of file-systems-to-dump when a path is given:
- if it's a path to an unmounted file-system listed in /etc/fstab, use
that instead of assuming the user wanted a subtree dump of the parent
directory. this restores the behaviour of dump before the subtree
dumping code went in.
- if it's a path to a mounted file-system which is not in /etc/fstab,
use the info from getmntinfo(3). previously, dump would choke.
* implement error checked malloc(), calloc(), strdup(), and use
appropriately (some of the calloc()s weren't being checked)
* use 'file-system' instead of 'filesystem' in the man page

unifdef !__STDC__ (missed in previous)

knf to ansi

branches: 1.28.6;
Working version of aborted dump{,_lfs} join.

Back out changes made on the 29th, not at all the changes I intended to commit.
(I don't know how I did it though ... I'll figure it out tonight.)
I'll reapply this, in a working form, this evening.

Adapt dump(8) to use filestore-independent (but still ufs-specific)
replacements for NINDIR, fsbtodb, etc. Create dump_lfs by adding a few
LFS-filestore-specific routines. As described in PR#8317.

branches: 1.25.2;
Avoid byte overflow in block estimate for large files

branches: 1.24.2;
Implement a read cache, as announced on tech-userlevel. Default is 32k
read buffer size, 512 buffer or 15% of the user memory. Can be changed
with the -k and -s options.

Handle "nodump" flag on directories, by not dumping any files or directories
under it. Based on some parts of PR 6705 by Brian Grayson.
In the Makefile, add (commented out) debug options that can be turned on.

fix estimate of blocks for subsets.
fix from Brian Grayson <bgrayson@ece.utexas.edu> in [bin/6607]

from Erik Bertelsen <erik@mediator.uni-c.dk>
{ put } { in } { lots } { of } { these } { to } { shut } { up } { egcs }

Add support for non-native byte order FFS. The dump is in filesystem byte
order, restore already knows how to byteswap dumps.

resolve conflicts from lite-2 import

* cleanup for WARNS=1
* fix use of .Nm
* comment out some unused(?) functions

* Add the ability to dump specific files & directories of a single
filesystem. This uses fts(3) to access the directory structure (and
not the raw device), so the standard access permissions are adhered
to (unlike dumping an entire filesystem, which just requires read
access to the raw disk device).
* Support SIGINFO status reporting.
* Remove now unused variables that previously stored the (e)uid.
* Be more informative in a couple of error messages.

remove use of "register".

patches from Tom I Helbekkmo <tih@nhh.no> to deal with type-size issues,
so this works (better, at least) on 64-bit machines (e.g. alpha).

branches: 1.14.6;
update for posixified stat structure

Back out previous change.

typeof(timeval.tv_sec) != time_t

Fix another bogus cast.

Remove incorrect cast on lseek() return value.

convert to new RCS Id conventions; reduce my headache

Don't mix stat flags and inode flags.

Eliminate uses of some obsolete functions.

Correct typo; IFMT -> S_IFMT.

Fix compatibility with old fastlinks.

Update from 4.4-Lite, with local changes.

change some #ifdef's.

fix for() starting condition in mapfiles()

branches: 1.1.1;
new version from CSRG, via BSDI, with fixes