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History log of /src/sys/fs/cd9660
RevisionDateAuthorComments
 1.1 23-Dec-2002  jdolecek branches: 1.1.2;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file Makefile was added on branch nathanw_sa on 2002-12-29 19:55:30 +0000
 1.4 17-May-2015  pooka update: runs as a userspace process now.
 1.3 11-Dec-2005  christos branches: 1.3.120; 1.3.140;
merge ktrace-lwp.
 1.2 26-Feb-2005  perry nuke trailing whitespace
 1.1 23-Dec-2002  jdolecek branches: 1.1.2; 1.1.4; 1.1.12; 1.1.14;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.14.1 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.1.12.1 29-Apr-2005  kent sync with -current
 1.1.4.1 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file TODO was added on branch nathanw_sa on 2002-12-29 19:55:31 +0000
 1.3.140.1 06-Jun-2015  skrll Sync with HEAD
 1.3.120.1 03-Dec-2017  jdolecek update from HEAD
 1.3 17-May-2015  pooka Remove. For example, vfs_cluster hasn't existed since early UBC days
(which were 10+ years ago).
 1.2 06-Jan-2003  wiz branches: 1.2.150; 1.2.170;
through, not throught.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.2.3 07-Jan-2003  thorpej Sync with HEAD.
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file TODO.hibler was added on branch nathanw_sa on 2002-12-29 19:55:32 +0000
 1.2.170.1 06-Jun-2015  skrll Sync with HEAD
 1.2.150.1 03-Dec-2017  jdolecek update from HEAD
 1.5 14-Jun-2014  hannken Remove the hints "isodir" and "relocated" from cd9660_vget_internal()
and always reread the directory entry by inumber. For directories
the directory entry is always its "." entry.

Always read directories via the device vnode to prevent buffer cache
inconsistency. Keep i_devvp as a hint for fstat(1) and friends and
always use im_devvp for reads. No need to vref()/vrele() i_devvp.

The additional bread is either cached because cd9660_lookup() just
released the buffer or will be used in the near future when the
directory gets traversed during lookup.

No objections on tech-kern@
 1.4 27-Feb-2008  matt branches: 1.4.48; 1.4.64;
Convert to ansi definitions from old-style definitons.
 1.3 11-Dec-2005  christos branches: 1.3.46; 1.3.66; 1.3.70;
merge ktrace-lwp.
 1.2 07-Aug-2003  agc branches: 1.2.16;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2; 1.1.4;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.4.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.1.4.2 18-Sep-2004  skrll Sync with HEAD.
 1.1.4.1 03-Aug-2004  skrll Sync with HEAD
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_bmap.c was added on branch nathanw_sa on 2002-12-29 19:55:33 +0000
 1.2.16.1 17-Mar-2008  yamt sync with head.
 1.3.70.1 03-Apr-2008  mjf Sync with HEAD.
 1.3.66.1 24-Mar-2008  keiichi sync with head.
 1.3.46.1 23-Mar-2008  matt sync with HEAD
 1.4.64.1 10-Aug-2014  tls Rebase.
 1.4.48.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.29 19-May-2024  tsutsui Make cd9660_util.c usable in userland tools like installboot(8).

This was partially done for src/distrib/cdrom/macppc_installboot,
but more strict prototypes are necessary for native binary builds.
 1.28 02-Feb-2024  christos PR/57897: Ricardo Branco: Add support for mount options mask,dirmask,uid,gid
 1.27 22-Aug-2018  msaitoh branches: 1.27.30;
- Cleanup for dynamic sysctl:
- Remove unused *_NAMES macros for sysctl.
- Remove unused *_MAXID for sysctls.
- Move CTL_MACHDEP sysctl definitions for m68k into m68k/include/cpu.h and
use them on all m68k machines.
 1.26 23-Jun-2013  dholland branches: 1.26.32; 1.26.34;
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
 1.25 19-Jun-2013  dholland blkoff() -> cd9660_blkoff()
blksize() -> cd9660_blksize()
 1.24 28-Jun-2008  rumble branches: 1.24.30; 1.24.40;
Create sysctl entries during module initialisation and destroy them
appropriately.

Many of these file systems are now ready for modularisation.
 1.23 27-Feb-2008  matt branches: 1.23.4; 1.23.6; 1.23.8;
Convert to ansi definitions from old-style definitons.
 1.22 31-Jul-2007  pooka branches: 1.22.4; 1.22.20; 1.22.24; 1.22.26;
* nuke the nameidata parameter from VFS_MOUNT(). Nobody on tech-kern
knew what it was supposed to be used for and wrstuden gave a go-ahead
* while rototilling, convert file systems which went easily to
use VFS_PROTOS() instead of manually prototyping the methods
 1.21 12-Jul-2007  dsl branches: 1.21.2;
Change the VFS_MOUNT() interface so that the 'data' buffer passed to the
fs code is a kernel buffer, pass though the length of the buffer as well.
Since the length of the userspace buffer isn'it (yet) passed through the mount
system call, add a field to the vfsops structure containing the default length.
Split sys_mount() for calls from compat code.
Ride one of the recent kernel version changes - old fs LKMs will load, but
sys_mount() will reject any attempt to use them.
 1.20 13-Jul-2006  martin branches: 1.20.14;
Fix alignement problems for fhandle_t, exposed by gcc4.1.

While touching all vptofh/fhtovp functions, get rid of VFS_MAXFIDSIZ,
version the getfh(2) syscall and explicitly pass the size available in
the filehandle from userland.

Discussed on tech-kern, with lots of help from yamt (thanks!).
 1.19 14-May-2006  elad branches: 1.19.4;
integrate kauth.
 1.18 11-Dec-2005  christos branches: 1.18.4; 1.18.6; 1.18.8; 1.18.10; 1.18.12;
merge ktrace-lwp.
 1.17 03-Dec-2005  christos protect against multiple inclusion instead of forbidding their access from
userland, and #ifdef _KERNEL all their kernel functions.
 1.16 03-Dec-2005  christos - protect userland exported files against multiple inclusion.
- make sure that kernel only files don't compile in userland using #error
- XXX: some kernel only files still get installed.
- XXX: some files used in userland, don't get installed.
 1.15 23-Sep-2005  jmmv Apply the NFS exports list rototill patch:

- Remove all NFS related stuff from file system specific code.
- Drop the vfs_checkexp hook and generalize it in the new nfs_check_export
function, thus removing redundancy from all file systems.
- Move all NFS export-related stuff from kern/vfs_subr.c to the new
file sys/nfs/nfs_export.c. The former was becoming large and its code
is always compiled, regardless of the build options. Using the latter,
the code is only compiled in when NFSSERVER is enabled. While doing this,
also make some functions in nfs_subs.c conditional to NFSSERVER.
- Add a new command in nfssvc(2), called NFSSVC_SETEXPORTSLIST, that takes a
path and a set of export entries. At the moment it can only clear the
exports list or append entries, one by one, but it is done in a way that
allows setting the whole set of entries atomically in the future (see the
comment in mountd_set_exports_list or in doc/TODO).
- Change mountd(8) to use the nfssvc(2) system call instead of mount(2) so
that it becomes file system agnostic. In fact, all this whole thing was
done to remove a 'XXX' block from this utility!
- Change the mount*, newfs and fsck* userland utilities to not deal with NFS
exports initialization; done internally by the kernel when initializing
the NFS support for each file system.
- Implement an interface for VFS (called VFS hooks) so that several kernel
subsystems can run arbitrary code upon receipt of specific VFS events.
At the moment, this only provides support for unmount and is used to
destroy NFS exports lists from the file systems being unmounted, though it
has room for extension.

Thanks go to yamt@, chs@, thorpej@, wrstuden@ and others for their comments
and advice in the development of this patch.
 1.14 30-Aug-2005  xtraeme Remove __P()
 1.13 26-Feb-2005  perry branches: 1.13.4;
nuke trailing whitespace
 1.12 28-Dec-2004  jdolecek branches: 1.12.2; 1.12.4;
size_t police

pointed out by Jesse Off on source-changes@
 1.11 21-Nov-2004  jdolecek when Joliet extension is in use, encode the Joliet Unicode file names
into UTF-8, rather than filtering them to ISO-8859-1 subset

provide vfs.cd9660.utf8_joliet sysctl to switch to the former
iso-8859-1-only handling, default is to UTF-8 encode
 1.10 20-May-2004  atatat Tweak sysctl setup functions (the macros, actually) for use in lkms,
and tweak lkminit_*.c (where applicable) to call them, and to call
sysctl_teardown() when being unloaded.

This consists of (1) making setup functions not be static when being
compiled as lkms (change to sys/sysctl.h), (2) making prototypes
visible for the various setup functions in header files (changes to
various header files), and (3) making simple "load" and "unload"
functions in the actual lkminit stuff.

linux_sysctl.c also needs its root exposed (ie, made not static) for
this (when built as an lkm).
 1.9 27-Apr-2004  jrf First pass for some caddr_t removal and changes to get rid of it where we
no longer use and/or need it

- removed casts from unionfs, deadfs and fdesc
(there are more to hunt down still)
- changed vfs_quotactl args argumet from caddr_t to void *
- changed vfs_quotactl structures/callers to reflect the api change

Compiled fine and ran for about a day. Approved/reviewed by
christos@netbsd.org and gimpy@netbsd.org.
 1.8 21-Apr-2004  christos Replace the statfs() family of system calls with statvfs().
Retain binary compatibility.
 1.7 04-Dec-2003  atatat branches: 1.7.2;
Dynamic sysctl.

Gone are the old kern_sysctl(), cpu_sysctl(), hw_sysctl(),
vfs_sysctl(), etc, routines, along with sysctl_int() et al. Now all
nodes are registered with the tree, and nodes can be added (or
removed) easily, and I/O to and from the tree is handled generically.

Since the nodes are registered with the tree, the mapping from name to
number (and back again) can now be discovered, instead of having to be
hard coded. Adding new nodes to the tree is likewise much simpler --
the new infrastructure handles almost all the work for simple types,
and just about anything else can be done with a small helper function.

All existing nodes are where they were before (numerically speaking),
so all existing consumers of sysctl information should notice no
difference.

PS - I'm sorry, but there's a distinct lack of documentation at the
moment. I'm working on sysctl(3/8/9) right now, and I promise to
watch out for buses.
 1.6 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.5 29-Jun-2003  fvdl branches: 1.5.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
 1.4 29-Jun-2003  thorpej Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget(). Turns out
that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
just to appease the above.
 1.3 28-Jun-2003  darrenr Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V
 1.2 01-Feb-2003  thorpej Add extensible malloc types, adapted from FreeBSD. This turns
malloc types into a structure, a pointer to which is passed around,
instead of an int constant. Allow the limit to be adjusted when the
malloc type is defined, or with a function call, as suggested by
Jonathan Stone.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_extern.h was added on branch nathanw_sa on 2002-12-29 19:55:35 +0000
 1.5.2.10 11-Dec-2005  christos Sync with head.
 1.5.2.9 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.5.2.8 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.5.2.7 17-Jan-2005  skrll Sync with HEAD.
 1.5.2.6 29-Nov-2004  skrll Sync with HEAD.
 1.5.2.5 21-Sep-2004  skrll Fix the sync with head I botched.
 1.5.2.4 18-Sep-2004  skrll Sync with HEAD.
 1.5.2.3 24-Aug-2004  skrll Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget(). Turns out
that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
just to appease the above.
 1.5.2.2 03-Aug-2004  skrll Sync with HEAD
 1.5.2.1 02-Jul-2003  darrenr Apply the aborted ktrace-lwp changes to a specific branch. This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it. This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.
 1.7.2.1 23-May-2004  tron Pull up revision 1.10 (requested by atatat in ticket #374):
Tweak sysctl setup functions (the macros, actually) for use in lkms,
and tweak lkminit_*.c (where applicable) to call them, and to call
sysctl_teardown() when being unloaded.
This consists of (1) making setup functions not be static when being
compiled as lkms (change to sys/sysctl.h), (2) making prototypes
visible for the various setup functions in header files (changes to
various header files), and (3) making simple "load" and "unload"
functions in the actual lkminit stuff.
linux_sysctl.c also needs its root exposed (ie, made not static) for
this (when built as an lkm).
 1.12.4.1 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.12.2.1 29-Apr-2005  kent sync with -current
 1.13.4.4 17-Mar-2008  yamt sync with head.
 1.13.4.3 03-Sep-2007  yamt sync with head.
 1.13.4.2 30-Dec-2006  yamt sync with head.
 1.13.4.1 21-Jun-2006  yamt sync with head.
 1.18.12.1 24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.18.10.1 08-Mar-2006  elad Adapt to kernel authorization KPI.
 1.18.8.2 11-Aug-2006  yamt sync with head
 1.18.8.1 24-May-2006  yamt sync with head.
 1.18.6.1 01-Jun-2006  kardel Sync with head.
 1.18.4.1 09-Sep-2006  rpaulo sync with head
 1.19.4.1 13-Jul-2006  gdamore Merge from HEAD.
 1.20.14.2 20-Aug-2007  ad Sync with HEAD.
 1.20.14.1 15-Jul-2007  ad Sync with head.
 1.21.2.1 15-Aug-2007  skrll Sync with HEAD.
 1.22.26.2 31-Jul-2007  pooka * nuke the nameidata parameter from VFS_MOUNT(). Nobody on tech-kern
knew what it was supposed to be used for and wrstuden gave a go-ahead
* while rototilling, convert file systems which went easily to
use VFS_PROTOS() instead of manually prototyping the methods
 1.22.26.1 31-Jul-2007  pooka file cd9660_extern.h was added on branch matt-mips64 on 2007-07-31 21:14:18 +0000
 1.22.24.2 29-Jun-2008  mjf Sync with HEAD.
 1.22.24.1 03-Apr-2008  mjf Sync with HEAD.
 1.22.20.1 24-Mar-2008  keiichi sync with head.
 1.22.4.1 23-Mar-2008  matt sync with HEAD
 1.23.8.1 03-Jul-2008  simonb Sync with head.
 1.23.6.1 18-Sep-2008  wrstuden Sync with wrstuden-revivesa-base-2.
 1.23.4.1 04-May-2009  yamt sync with head.
 1.24.40.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.24.40.1 23-Jun-2013  tls resync from head
 1.24.30.1 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")
 1.26.34.1 10-Jun-2019  christos Sync with HEAD
 1.26.32.1 06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.27.30.1 22-Jun-2024  martin Pull up following revision(s) (requested by tsutsui in ticket #722):

sys/fs/cd9660/cd9660_util.c: revision 1.16
sys/arch/hp300/stand/common/clock.c: revision 1.14
sys/arch/hp300/stand/common/scsireg.h: revision 1.5
sys/arch/hp300/stand/common/scsireg.h: revision 1.6
sys/arch/hp300/stand/Makefile.buildboot: revision 1.38
sys/arch/hp300/include/bus.h: revision 1.23
sys/arch/hp300/stand/Makefile.buildboot: revision 1.39
sys/arch/hp300/stand/common/sd.c: revision 1.12
sys/arch/hp300/stand/common/prf.c: revision 1.6
sys/arch/hp300/stand/common/sd.c: revision 1.13
usr.sbin/installboot/installboot.8: revision 1.106
usr.sbin/installboot/Makefile: revision 1.59
sys/arch/hp300/stand/common/devopen.c: revision 1.14
usr.sbin/installboot/installboot.8: revision 1.107
sys/arch/hp300/stand/common/ite_dumb.c: revision 1.2
sys/arch/hp300/stand/common/devopen.c: revision 1.15
usr.sbin/installboot/installboot.8: revision 1.108
sys/fs/cd9660/cd9660_extern.h: revision 1.29
usr.sbin/installboot/installboot.8: revision 1.109
tools/Makefile.nbincludes: revision 1.11 (patch)
sys/arch/hp300/dev/rboxreg.h: revision 1.3
sys/arch/hp300/stand/common/scsivar.h: revision 1.5
sys/arch/hp300/dev/dnkbd.c: revision 1.14
sys/arch/hp300/hp300/trap.c: revision 1.156
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.12
sys/arch/hp300/dev/frodoreg.h: revision 1.6
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.13
sys/arch/hp300/stand/common/ite_sti.c: revision 1.2
sys/arch/hp300/stand/common/hil.c: revision 1.15
usr.sbin/installboot/arch/hp300.c: revision 1.18
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.14
sys/arch/hp300/dev/rbox.c: revision 1.4
usr.sbin/installboot/arch/hp300.c: revision 1.19
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.15
sys/sys/bootblock.h: revision 1.59
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.16
usr.sbin/installboot/installboot.h: revision 1.44
sys/arch/hp300/stand/mkboot/volhdr.h: file removal
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.17
sys/arch/hp300/dev/hpib.c: revision 1.45
usr.sbin/installboot/installboot.h: revision 1.45
usr.sbin/installboot/cd9660.c: revision 1.1
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.18
sys/arch/hp300/dev/topcatreg.h: revision 1.3
usr.sbin/installboot/cd9660.c: revision 1.2
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.19
sys/arch/hp300/stand/inst/inst.c: revision 1.25
sys/arch/hp300/stand/uboot/Makefile: revision 1.12
sys/arch/hp300/dev/dvbox.c: revision 1.4
sys/arch/hp300/dev/dma.c: revision 1.45
sys/arch/hp300/stand/uboot/Makefile: revision 1.13
sys/arch/hp300/stand/common/rd.c: revision 1.16
sys/arch/hp300/stand/inst/Makefile: revision 1.12
distrib/hp300/cdroms/installcd/Makefile: revision 1.4
sys/arch/hp300/stand/mkboot/volhdr.h: revision 1.6
sys/arch/hp300/stand/common/machdep.c: revision 1.16
usr.sbin/installboot/fstypes.c: revision 1.14
sys/arch/hp300/hp300/machdep.c: revision 1.238
sys/arch/hp300/include/cpu.h: revision 1.73
sys/arch/hp300/dev/diofbreg.h: revision 1.4
sys/arch/hp300/stand/common/scsi.c: revision 1.12
sys/arch/hp300/stand/common/netio.c: revision 1.19
sys/arch/hp300/stand/common/scsi.c: revision 1.13
sys/arch/hp300/dev/sti_sgc.c: revision 1.8
sys/arch/hp300/dev/rtc.c: revision 1.22
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.20
sys/arch/hp300/stand/common/conf.h: revision 1.4
sys/arch/hp300/hp300/autoconf.c: revision 1.111
sys/arch/hp300/stand/common/conf.c: revision 1.15
sys/arch/hp300/stand/mkboot/Makefile: revision 1.12
sys/arch/hp300/stand/mkboot/Makefile: revision 1.13
sys/arch/hp300/hp300/autoconf.c: revision 1.114
sys/arch/hp300/dev/dcmreg.h: revision 1.11
sys/arch/hp300/dev/diofbvar.h: revision 1.4
sys/arch/hp300/dev/dcm.c: revision 1.91
sys/fs/cd9660/cd9660_util.c: revision 1.15
sys/arch/hp300/dev/mcclock_frodo.c: revision 1.2

TAB/space cleanup.

installboot(8): formatting improvements

Use Ar foo instead of <foo>; this is mdoc.

Other formatting tweaks.
installboot(8): fix up markup

Don't overuse .Sy - when everything is highlighted, nothing is. Use
.Ic for options &c to get correct PostScript output (both are bold in
plain text).

Use Aq Ar inside .Pa, as both Pa and Ar are rendered as underscored
text in plain text output, and the distinction is lost.

Don't set examples in bold, but give them .Pp space around - they are
much easier to read this way.

Use consistent -width in FILES.
document how to use installboot on netbsd/vax.

PR/57909: Jan-Benedict Glaw: Don't include (build) timestamp when doing a
reproducible build
fix usage string, improve error handling.
add missing chunk for repro-build. fix gcc warnings.
avoid stringop truncation, fix copyright string to prevent assembler warnings.

Fix build as a tool (Jan-Benedict Glaw)

Fix integer overflow of strtol(3) for "loadpoint" address on ILP32 hosts.

This strtol(3) was introduced in rev 1.12 for PR/57909 after netbsd-10,
but it returns LONG_MAX (0x7FFFFFFF) for 0xFFF00000 on ILP32 hosts and
the wrong loadpoint causes "NOT ENOUGH MEMORY" error by the BOOTROMs
on loading uboot.lif on (at least) my 9000/360 and 9000/425t.

Misc cosmetic changes for mostly readability.
- KNF and add some newlines per blocks
- define and use proper bintobcd() macro
- make local functions and variables static

The same uboot.lif binaries are generated.

Rename ${PROGAOUT} -> ${PROGELF} to reflect reality.
Use proper signedness for the LIF file system data structures.

Ancient 4.3BSD used short and int for location, file size, file type,
and addresses etc. but all of them should be unsigned.

Also rename several variables and add comments for readability.
The LIF file system info can be found in "The HPDir Project" page:
https://www.hp9845.net/9845/projects/hpdir/
The same uboot.lif binaries are generated.

Add a preliminary CD boot support to uboot for preparation of PR/54455.
Briefly tested on mame, but not enalbed yet.

Recognize SCSI CD-ROM devices as a booted device properly.

Necessary for PR port-hp300/54455, to boot an md root root RAMDISK

kernel from CD-ROM without "WARNING: can't find match for bootdev:"
prompt.

Sync with src/sys/arch/hp300/stand/mkboot/volhdr.h rev 1.6.
https://mail-index.netbsd.org/source-changes/2024/05/07/msg151195.html

Use proper signedness for the LIF file system data structures.
mkboot should use this MI <sys/bootblock.h> and volhdr.h should
be removed soon.

Use MI <sys/bootblock.h> to refer LIF filesystem structures.
This should have been done when LIF definitions were initially added
to <sys/bootblock.h> for MI installboot(8).

Enable SUPPORT_CD on uboot.

Make cd9660_util.c usable in userland tools like installboot(8).

This was partially done for src/distrib/cdrom/macppc_installboot,
but more strict prototypes are necessary for native binary builds.

Install cd9660 related system headers for tools installboot(8) builds.

Reorder function prototypes per source files.

Add cd9660 support to search a bootloader file in the target file system.

Also add CD boot support for hp300, using a bootloader file in cd9660 fs.
This is a tool's part to close PR/54455.

HP 9000/300 machines read LIF directory entry allocated after
the LIF volume header at the top of the boot disk during bootstrap,
and a bootstrap file must be contiguously allocated on the disk
due to limitation of the LIF specification.

Current NetBSD/hp300's bootloader is larger than ~80KB so we have
to prepare a special 'boot' partition for FFS (that has only 8KB (ffsv1)
or 32KB (ffsv2) spaces) disks to put such a large bootloader.

On the other hand, on ISO9660 fs all files are allocated contiguously
so we can specify a bootloader file in the target ISO9660 directly
in the LIF directory entry.

Note we can simply use the existing "append" option to create bootable
CD ISO for hp300, but it looks some emulators (at leaset MAME) reject
such non-standard ISO files, i.e. with an appended bootloader file at
the end of the image.

Put a RAMDISK kernel and SYS_UBOOT into hp300 installcd to make it bootable.

This should finally close PR/54455.

Fix tools build errors on Cygwin.

Appease warnings on building tools/installboot on Cygwin.
 1.33 08-Sep-2024  rillig fix a/an grammar in obvious cases
 1.32 06-Aug-2022  andvar branches: 1.32.10;
s/blity/bility/ in various words, mainly in comments.
 1.31 04-Apr-2020  ad Merge the remaining changes from the ad-namecache branch, affecting namei()
and getcwd():

- push vnode locking back as far as possible.
- do most lookups directly in the namecache, avoiding vnode locks & refs.
- don't block new refs to vnodes across VOP_INACTIVE().
- get shared locks for VOP_LOOKUP() if the file system supports it.
- correct lock types for VOP_ACCESS() / VOP_GETATTR() in a few places.

Possible future enhancements:

- make the lookups lockless.
- support dotdot lookups by being lockless and inferring absence of chroot.
- maybe make it work for layered file systems.
- avoid vnode references at the root & cwd.
 1.30 28-Mar-2015  maxv branches: 1.30.18; 1.30.24;
Remove the 'cred' argument from bread(). Remove a now unused var in
ffs_snapshot.c. Update the man page accordingly.

ok hannken@
 1.29 16-Jun-2014  hannken branches: 1.29.4;
Change cd9660 from hashlist to vcache.
 1.28 14-Jun-2014  hannken Remove the hints "isodir" and "relocated" from cd9660_vget_internal()
and always reread the directory entry by inumber. For directories
the directory entry is always its "." entry.

Always read directories via the device vnode to prevent buffer cache
inconsistency. Keep i_devvp as a hint for fstat(1) and friends and
always use im_devvp for reads. No need to vref()/vrele() i_devvp.

The additional bread is either cached because cd9660_lookup() just
released the buffer or will be used in the near future when the
directory gets traversed during lookup.

No objections on tech-kern@
 1.27 03-Jun-2014  joerg Introduce two helper functions to centralise the namecache statistics
in vfs_cache.c. Use consistent locking around the per-cpu data.
 1.26 07-Feb-2014  hannken branches: 1.26.2;
Change vnode operation lookup to return the resulting vnode *vpp unlocked.
Change cache_lookup() to return an unlocked vnode.

Discussed on tech-kern@

Welcome to 6.99.31
 1.25 23-Jun-2013  dholland branches: 1.25.2;
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
 1.24 19-Jun-2013  dholland blkoff() -> cd9660_blkoff()
blksize() -> cd9660_blksize()
 1.23 20-Dec-2012  hannken Change bread() and breadn() to never return a buffer on
error and modify all callers to not brelse() on error.

Welcome to 6.99.16

PR kern/46282 (6.0_BETA crash: msdosfs_bmap -> pcbmap -> bread -> bio_doread)
 1.22 05-Nov-2012  dholland Excise struct componentname from the namecache.

This uglifies the interface, because several operations need to be
passed the namei flags and cache_lookup also needs for the time being
to be passed cnp->cn_nameiop. Nonetheless, it's a net benefit.

The glop should be able to go away eventually but requires structural
cleanup elsewhere first.

This change requires a kernel bump.
 1.21 05-Nov-2012  dholland Disentangle the namecache from the internals of namei.

- Move the namecache's hash computation to inside the namecache code,
instead of being spread out all over the place. Remove cn_hash from
struct componentname and delete all uses of it.

- It is no longer necessary (if it ever was) for cache_lookup and
cache_lookup_raw to clear MAKEENTRY from cnp->cn_flags for the cases
that cache_enter already checks for.

- Rearrange the interface of cache_lookup (and cache_lookup_raw) to
make it somewhat simpler, to exclude certain nonexistent error
conditions, and (most importantly) to make it not require write access
to cnp->cn_flags.

This change requires a kernel bump.
 1.20 22-Jul-2012  rmind branches: 1.20.2;
Move some the test for MAKEENTRY into the cache_enter(9). Make some
variables in vfs_cache.c static, __read_mostly, etc.

No objection on tech-kern@.
 1.19 27-Sep-2011  christos branches: 1.19.2; 1.19.8;
use ISO_MAXNAMLEN instead of NAME_MAX
 1.18 24-Jun-2010  hannken Clean up vnode lock operations pass 2:

VOP_UNLOCK(vp, flags) -> VOP_UNLOCK(vp): Remove the unneeded flags argument.

Welcome to 5.99.32.

Discussed on tech-kern.
 1.17 08-Jan-2010  pooka branches: 1.17.2; 1.17.4;
The VATTR_NULL/VREF/VHOLD/HOLDRELE() macros lost their will to live
years ago when the kernel was modified to not alter ABI based on
DIAGNOSTIC, and now just call the respective function interfaces
(in lowercase). Plenty of mix'n match upper/lowercase has creeped
into the tree since then. Nuke the macros and convert all callsites
to lowercase.

no functional change
 1.16 16-May-2008  hannken Make sure all cached buffers with valid, not yet written data have been
run through copy-on-write. Call fscow_run() with valid data where possible.

The LP_UFSCOW hack is no longer needed to protect ffs_copyonwrite() against
endless recursion.

- Add a flag B_MODIFY to bread(), breada() and breadn(). If set the caller
intends to modify the buffer returned.

- Always run copy-on-write on buffers returned from ffs_balloc().

- Add new function ffs_getblk() that gets a buffer, assigns a new blkno,
may clear the buffer and runs copy-on-write. Process possible errors
from getblk() or fscow_run(). Part of PR kern/38664.

Welcome to 4.99.63

Reviewed by: YAMAMOTO Takashi <yamt@netbsd.org>
 1.15 27-Feb-2008  matt branches: 1.15.2; 1.15.4; 1.15.6;
Convert to ansi definitions from old-style definitons.
 1.14 26-Nov-2007  pooka branches: 1.14.10; 1.14.14;
Remove the "struct lwp *" argument from all VFS and VOP interfaces.
The general trend is to remove it from all kernel interfaces and
this is a start. In case the calling lwp is desired, curlwp should
be used.

quick consensus on tech-kern
 1.13 08-Oct-2007  ad branches: 1.13.4;
Merge brelse() changes from the vmlocking branch.
 1.12 09-Dec-2006  chs branches: 1.12.6; 1.12.18; 1.12.20; 1.12.22;
a smorgasbord of improvements to vnode locking and path lookup:
- LOCKPARENT is no longer relevant for lookup(), relookup() or VOP_LOOKUP().
these now always return the parent vnode locked. namei() works as before.
lookup() and various other paths no longer acquire vnode locks in the
wrong order via vrele(). fixes PR 32535.
as a nice side effect, path lookup is also up to 25% faster.
- the above allows us to get rid of PDIRUNLOCK.
- also get rid of WANTPARENT (just use LOCKPARENT and unlock it).
- remove an assumption in layer_node_find() that all file systems implement
a recursive VOP_LOCK() (unionfs doesn't).
- require that all file systems supply vfs_vptofh and vfs_fhtovp routines.
fill in eopnotsupp() for file systems that don't support being exported
and remove the checks for NULL. (layerfs calls these without checking.)
- in union_lookup1(), don't change refcounts in the ISDOTDOT case, just
adjust which vnode is locked. fixes PR 33374.
- apply fixes for ufs_rename() from ufs_vnops.c rev. 1.61 to ext2fs_rename().
 1.11 14-May-2006  elad branches: 1.11.8; 1.11.10; 1.11.12;
integrate kauth.
 1.10 15-Apr-2006  christos Coverity CID 1135: Add KASSERT before deref.
 1.9 11-Dec-2005  christos branches: 1.9.4; 1.9.6; 1.9.8; 1.9.10; 1.9.12;
merge ktrace-lwp.
 1.8 02-Nov-2005  yamt merge yamt-vop branch. remove following VOPs.

VOP_BLKATOFF
VOP_VALLOC
VOP_BALLOC
VOP_REALLOCBLKS
VOP_VFREE
VOP_TRUNCATE
VOP_UPDATE
 1.7 26-Feb-2005  perry branches: 1.7.4; 1.7.6;
nuke trailing whitespace
 1.6 07-Aug-2003  agc branches: 1.6.8; 1.6.10;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.5 29-Jun-2003  fvdl branches: 1.5.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
 1.4 29-Jun-2003  thorpej Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget(). Turns out
that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
just to appease the above.
 1.3 28-Jun-2003  darrenr Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V
 1.2 20-Jan-2003  simonb Remove variable that is only assigned too but not referenced.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_lookup.c was added on branch nathanw_sa on 2002-12-29 19:55:35 +0000
 1.5.2.7 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.5.2.6 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.5.2.5 21-Sep-2004  skrll Fix the sync with head I botched.
 1.5.2.4 18-Sep-2004  skrll Sync with HEAD.
 1.5.2.3 24-Aug-2004  skrll Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget(). Turns out
that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
just to appease the above.
 1.5.2.2 03-Aug-2004  skrll Sync with HEAD
 1.5.2.1 02-Jul-2003  darrenr Apply the aborted ktrace-lwp changes to a specific branch. This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it. This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.
 1.6.10.1 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.6.8.1 29-Apr-2005  kent sync with -current
 1.7.6.1 20-Oct-2005  yamt adapt cd9660.
 1.7.4.5 17-Mar-2008  yamt sync with head.
 1.7.4.4 07-Dec-2007  yamt sync with head
 1.7.4.3 27-Oct-2007  yamt sync with head.
 1.7.4.2 30-Dec-2006  yamt sync with head.
 1.7.4.1 21-Jun-2006  yamt sync with head.
 1.9.12.1 24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.9.10.3 06-May-2006  christos - Move kauth_cred_t declaration to <sys/types.h>
- Cleanup struct ucred; forward declarations that are unused.
- Don't include <sys/kauth.h> in any header, but include it in the c files
that need it.

Approved by core.
 1.9.10.2 19-Apr-2006  elad sync with head.
 1.9.10.1 08-Mar-2006  elad Adapt to kernel authorization KPI.
 1.9.8.1 24-May-2006  yamt sync with head.
 1.9.6.2 01-Jun-2006  kardel Sync with head.
 1.9.6.1 22-Apr-2006  simonb Sync with head.
 1.9.4.1 09-Sep-2006  rpaulo sync with head
 1.11.12.1 17-Feb-2007  tron Apply patch (requested by chs in ticket #422):
- Fix various deadlock problems with nullfs and unionfs.
- Speed up path lookups by upto 25%.
 1.11.10.1 10-Dec-2006  yamt sync with head.
 1.11.8.1 12-Jan-2007  ad Sync with head.
 1.12.22.1 14-Oct-2007  yamt sync with head.
 1.12.20.3 23-Mar-2008  matt sync with HEAD
 1.12.20.2 09-Jan-2008  matt sync with HEAD
 1.12.20.1 06-Nov-2007  matt sync with HEAD
 1.12.18.2 27-Nov-2007  joerg Sync with HEAD. amd64 Xen support needs testing.
 1.12.18.1 26-Oct-2007  joerg Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.
 1.12.6.1 13-May-2007  ad - Pass the error number and residual count to biodone(), and let it handle
setting error indicators. Prepare to eliminate B_ERROR.
- Add a flag argument to brelse() to be set into the buf's flags, instead
of doing it directly. Typically used to set B_INVAL.
- Add a "struct cpu_info *" argument to kthread_create(), to be used to
create bound threads. Change "bool mpsafe" to "int flags".
- Allow exit of LWPs in the IDL state when (l != curlwp).
- More locking fixes & conversion to the new API.
 1.13.4.1 08-Dec-2007  mjf Sync with HEAD.
 1.14.14.2 02-Jun-2008  mjf Sync with HEAD.
 1.14.14.1 03-Apr-2008  mjf Sync with HEAD.
 1.14.10.1 24-Mar-2008  keiichi sync with head.
 1.15.6.1 23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.15.4.3 11-Aug-2010  yamt sync with head.
 1.15.4.2 11-Mar-2010  yamt sync with head
 1.15.4.1 04-May-2009  yamt sync with head.
 1.15.2.1 18-May-2008  yamt sync with head.
 1.17.4.1 03-Jul-2010  rmind sync with head
 1.17.2.1 17-Aug-2010  uebayasi Sync with HEAD.
 1.19.8.1 12-Aug-2012  martin Pull up following revision(s) (requested by manu in ticket #484):
sys/fs/nilfs/nilfs_vnops.c: revision 1.18
sys/ufs/ufs/ufs_lookup.c: revision 1.117
sys/nfs/nfs_vnops.c: revision 1.295
sys/ufs/chfs/chfs_vnops.c: revision 1.8
sys/ufs/ext2fs/ext2fs_lookup.c: revision 1.70
sys/fs/unionfs/unionfs_vnops.c: revision 1.6
sys/kern/vfs_cache.c: revision 1.89
sys/fs/efs/efs_vnops.c: revision 1.26
sys/fs/hfs/hfs_vnops.c: revision 1.26
sys/fs/adosfs/adlookup.c: revision 1.16
sys/fs/puffs/puffs_vnops.c: revision 1.168
sys/fs/tmpfs/tmpfs_vnops.c: revision 1.98
sys/fs/ntfs/ntfs_vnops.c: revision 1.52
sys/fs/cd9660/cd9660_lookup.c: revision 1.20
sys/fs/msdosfs/msdosfs_lookup.c: revision 1.24
sys/fs/smbfs/smbfs_vnops.c: revision 1.80
sys/fs/udf/udf_vnops.c: revision 1.72
sys/fs/filecorefs/filecore_lookup.c: revision 1.14
sys/fs/puffs/puffs_node.c: revision 1.25
Move some the test for MAKEENTRY into the cache_enter(9). Make some
variables in vfs_cache.c static, __read_mostly, etc.
No objection on tech-kern@.
 1.19.2.4 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")
 1.19.2.3 23-Jan-2013  yamt sync with head
 1.19.2.2 16-Jan-2013  yamt sync with (a bit old) head
 1.19.2.1 30-Oct-2012  yamt sync with head
 1.20.2.5 03-Dec-2017  jdolecek update from HEAD
 1.20.2.4 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.20.2.3 23-Jun-2013  tls resync from head
 1.20.2.2 25-Feb-2013  tls resync with head
 1.20.2.1 20-Nov-2012  tls Resync to 2012-11-19 00:00:00 UTC
 1.25.2.1 18-May-2014  rmind sync with head
 1.26.2.1 10-Aug-2014  tls Rebase.
 1.29.4.1 06-Apr-2015  skrll Sync with HEAD
 1.30.24.1 19-Jan-2020  ad Set IMNT_SHRLOOKUP and use it for the in-cache case. Need to check what
more can be done with tmpfs though, it can probably do the whole lookup.
 1.30.18.1 08-Apr-2020  martin Merge changes from current as of 20200406
 1.32.10.1 02-Aug-2025  perseant Sync with HEAD
 1.7 02-Feb-2024  christos PR/57897: Ricardo Branco: Add support for mount options mask,dirmask,uid,gid
 1.6 03-Dec-2005  christos - protect userland exported files against multiple inclusion.
- make sure that kernel only files don't compile in userland using #error
- XXX: some kernel only files still get installed.
- XXX: some files used in userland, don't get installed.
 1.5 25-Sep-2005  jmmv Follow compat naming tradition: rename compat_export_args to export_args30.
 1.4 23-Sep-2005  jmmv Apply the NFS exports list rototill patch:

- Remove all NFS related stuff from file system specific code.
- Drop the vfs_checkexp hook and generalize it in the new nfs_check_export
function, thus removing redundancy from all file systems.
- Move all NFS export-related stuff from kern/vfs_subr.c to the new
file sys/nfs/nfs_export.c. The former was becoming large and its code
is always compiled, regardless of the build options. Using the latter,
the code is only compiled in when NFSSERVER is enabled. While doing this,
also make some functions in nfs_subs.c conditional to NFSSERVER.
- Add a new command in nfssvc(2), called NFSSVC_SETEXPORTSLIST, that takes a
path and a set of export entries. At the moment it can only clear the
exports list or append entries, one by one, but it is done in a way that
allows setting the whole set of entries atomically in the future (see the
comment in mountd_set_exports_list or in doc/TODO).
- Change mountd(8) to use the nfssvc(2) system call instead of mount(2) so
that it becomes file system agnostic. In fact, all this whole thing was
done to remove a 'XXX' block from this utility!
- Change the mount*, newfs and fsck* userland utilities to not deal with NFS
exports initialization; done internally by the kernel when initializing
the NFS support for each file system.
- Implement an interface for VFS (called VFS hooks) so that several kernel
subsystems can run arbitrary code upon receipt of specific VFS events.
At the moment, this only provides support for unmount and is used to
destroy NFS exports lists from the file systems being unmounted, though it
has room for extension.

Thanks go to yamt@, chs@, thorpej@, wrstuden@ and others for their comments
and advice in the development of this patch.
 1.3 03-Oct-2003  yamt branches: 1.3.16;
terminate snprintb 'new' format strings correctly.
(fixes overrun in mount_*)
 1.2 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2; 1.1.4;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.4.5 11-Dec-2005  christos Sync with head.
 1.1.4.4 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.1.4.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.1.4.2 18-Sep-2004  skrll Sync with HEAD.
 1.1.4.1 03-Aug-2004  skrll Sync with HEAD
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_mount.h was added on branch nathanw_sa on 2002-12-29 19:55:36 +0000
 1.3.16.1 21-Jun-2006  yamt sync with head.
 1.38 26-May-2017  riastradh Eliminate crusty debugging sludge.

We have a mostly sane vnode lifecycle now. If this needs debugging,
it should be done once at the call site of VOP_RECLAIM.
 1.37 26-May-2017  riastradh Make VOP_RECLAIM do the last unlock of the vnode.

VOP_RECLAIM naturally has exclusive access to the vnode, so having it
locked on entry is not strictly necessary -- but it means if there
are any final operations that must be done on the vnode, such as
ffs_update, requiring exclusive access to it, we can now kassert that
the vnode is locked in those operations.

We can't just have the caller release the last lock because some file
systems don't use genfs_lock, and require the vnode to remain valid
for VOP_UNLOCK to work, notably unionfs.
 1.36 11-Apr-2017  riastradh Make VOP_INACTIVE preserve vnode lock on return.

Discussed on tech-kern:
https://mail-index.netbsd.org/tech-kern/2017/04/01/msg021751.html

Ride 7.99.68, a bumpy bus of incremental vfs improvements!
 1.35 20-Aug-2016  hannken branches: 1.35.2;
Remove now obsolete operation vcache_remove().

Welcome to 7.99.36
 1.34 10-Nov-2014  maxv branches: 1.34.2; 1.34.4;
Do not uselessly include <sys/malloc.h>.
 1.33 16-Jun-2014  hannken branches: 1.33.2;
Change cd9660 from hashlist to vcache.
 1.32 14-Jun-2014  hannken Remove the hints "isodir" and "relocated" from cd9660_vget_internal()
and always reread the directory entry by inumber. For directories
the directory entry is always its "." entry.

Always read directories via the device vnode to prevent buffer cache
inconsistency. Keep i_devvp as a hint for fstat(1) and friends and
always use im_devvp for reads. No need to vref()/vrele() i_devvp.

The additional bread is either cached because cd9660_lookup() just
released the buffer or will be used in the near future when the
directory gets traversed during lookup.

No objections on tech-kern@
 1.31 10-May-2014  martin PR kern/48787: inode calculation from ISO9660 block offset might get
truncated to 32bit - force the whole expression to be evaluated as ino_t.
Patch from Thomas Schmitt, with minor modifications (and reworded comment).
 1.30 27-Feb-2014  hannken branches: 1.30.2;
The current implementation of vn_lock() is racy. Modification of
the vnode operations vector for active vnodes is unsafe because it
is not known whether deadfs or the original file system will be
called.

- Pass down LK_RETRY to the lock operation (hint for deadfs only).

- Change deadfs lock operation to return ENOENT if LK_RETRY is unset.

- Change all other lock operations to check for dead vnode once
the vnode is locked and unlock and return ENOENT in this case.

With these changes in place vnode lock operations will never succeed
after vclean() has marked the vnode as VI_XLOCK and before vclean()
has changed the operations vector.

Adresses PR kern/37706 (Forced unmount of file systems is unsafe)

Discussed on tech-kern.

Welcome to 6.99.33
 1.29 12-Jun-2011  rmind branches: 1.29.2; 1.29.8; 1.29.12; 1.29.14; 1.29.16; 1.29.22;
Welcome to 5.99.53! Merge rmind-uvmplock branch:

- Reorganize locking in UVM and provide extra serialisation for pmap(9).
New lock order: [vmpage-owner-lock] -> pmap-lock.

- Simplify locking in some pmap(9) modules by removing P->V locking.

- Use lock object on vmobjlock (and thus vnode_t::v_interlock) to share
the locks amongst UVM objects where necessary (tmpfs, layerfs, unionfs).

- Rewrite and optimise x86 TLB shootdown code, make it simpler and cleaner.
Add TLBSTATS option for x86 to collect statistics about TLB shootdowns.

- Unify /dev/mem et al in MI code and provide required locking (removes
kernel-lock on some ports). Also, avoid cache-aliasing issues.

Thanks to Andrew Doran and Joerg Sonnenberger, as their initial patches
formed the core changes of this branch.
 1.28 19-May-2011  rmind branches: 1.28.2;
Remove cache_purge(9) calls from reclamation routines in the file systems,
as vclean(9) performs it for us since Lite2 merge.
 1.27 21-Jul-2010  hannken branches: 1.27.2;
Make holding v_interlock mandatory for callers of vget().

Announced some time ago on tech-kern.
 1.26 01-Jul-2010  hannken Remove vlockmgr(). Generic vnode lock operations now use a rwlock located
in the vnode. All LK_* flags move from sys/lock.h to sys/vnode.h. Calls
to vlockmgr() in file systems get replaced with VOP_LOCK() or VOP_UNLOCK().

Welcome to 5.99.34.

Discussed on tech-kern.
 1.25 24-Jun-2010  hannken Clean up vnode lock operations pass 2:

VOP_UNLOCK(vp, flags) -> VOP_UNLOCK(vp): Remove the unneeded flags argument.

Welcome to 5.99.32.

Discussed on tech-kern.
 1.24 05-May-2008  ad branches: 1.24.10; 1.24.20; 1.24.22; 1.24.24; 1.24.28;
- Convert hashinit() to use kmem_alloc(). The hash tables can be large
and it's better to not have them in kmem_map.
- Convert a couple of minor items along the way to kmem_alloc().
- Fix some memory leaks.
 1.23 27-Feb-2008  matt branches: 1.23.2; 1.23.4;
Convert to ansi definitions from old-style definitons.
 1.22 30-Jan-2008  ad branches: 1.22.2; 1.22.6;
Replace struct lock on vnodes with a simpler lock object built on
krwlock_t. This is a step towards removing lockmgr and simplifying
vnode locking. Discussed on tech-kern.
 1.21 17-Jan-2008  ad Fix dodgy tests of v_usecount.
 1.20 02-Jan-2008  ad Merge vmlocking2 to head.
 1.19 08-Dec-2007  ad branches: 1.19.4;
Merge locking changes + fixes from the vmlocking branch.
 1.18 26-Nov-2007  pooka branches: 1.18.2;
Remove the "struct lwp *" argument from all VFS and VOP interfaces.
The general trend is to remove it from all kernel interfaces and
this is a start. In case the calling lwp is desired, curlwp should
be used.

quick consensus on tech-kern
 1.17 08-Oct-2007  ad branches: 1.17.4;
Merge brelse() changes from the vmlocking branch.
 1.16 30-Jun-2007  pooka branches: 1.16.6; 1.16.8; 1.16.10;
Using POOL_INIT here makes no sense, since file systems always have
an init method. So get rid of it and #ifdef _LKM and just always
init in the init method. Give malloc types the same treatment.
Makes file systems nicer to work with in linksetless environments
and fixes a few LKM discrepancies.
 1.15 12-Mar-2007  ad branches: 1.15.2; 1.15.4;
Pass an ipl argument to pool_init/POOL_INIT to be used when initializing
the pool's lock.
 1.14 20-Feb-2007  ad branches: 1.14.4;
Call genfs_node_destroy() where appropriate.
 1.13 11-Dec-2005  christos branches: 1.13.26;
merge ktrace-lwp.
 1.12 02-Nov-2005  yamt merge yamt-vop branch. remove following VOPs.

VOP_BLKATOFF
VOP_VALLOC
VOP_BALLOC
VOP_REALLOCBLKS
VOP_VFREE
VOP_TRUNCATE
VOP_UPDATE
 1.11 30-Aug-2005  xtraeme branches: 1.11.2;
Remove __P()
 1.10 29-May-2005  christos branches: 1.10.2;
- rename variables to avoid shadowing.
- add a few const.
 1.9 26-Feb-2005  perry nuke trailing whitespace
 1.8 20-May-2004  atatat branches: 1.8.4; 1.8.6;
Explicitly call pool_init() (and pool_destroy()) when being built as
an _LKM.

This adds pools to the list of things that lkms must do manually
because they're set up with link sets. Not that there's anything
wrong with link sets, but that we need to try harder to remember that
lkms are second class citizens. Of a sort.
 1.7 25-Apr-2004  simonb Initialise (most) pools from a link set instead of explicit calls
to pool_init. Untouched pools are ones that either in arch-specific
code, or aren't initialiased during initial system startup.

Convert struct session, ucred and lockf to pools.
 1.6 27-Mar-2004  atatat Manually attach malloc types when being built as an lkm.
 1.5 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.4 29-Jun-2003  fvdl branches: 1.4.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
 1.3 29-Jun-2003  thorpej Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget(). Turns out
that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
just to appease the above.
 1.2 28-Jun-2003  darrenr Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V
 1.1 23-Dec-2002  jdolecek branches: 1.1.2;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_node.c was added on branch nathanw_sa on 2002-12-29 19:55:37 +0000
 1.4.2.8 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.4.2.7 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.4.2.6 27-Oct-2004  skrll Fix various comments that describe the argument structures
 1.4.2.5 21-Sep-2004  skrll Fix the sync with head I botched.
 1.4.2.4 18-Sep-2004  skrll Sync with HEAD.
 1.4.2.3 24-Aug-2004  skrll Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget(). Turns out
that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
just to appease the above.
 1.4.2.2 03-Aug-2004  skrll Sync with HEAD
 1.4.2.1 02-Jul-2003  darrenr Apply the aborted ktrace-lwp changes to a specific branch. This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it. This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.
 1.8.6.1 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.8.4.1 29-Apr-2005  kent sync with -current
 1.10.2.8 17-Mar-2008  yamt sync with head.
 1.10.2.7 04-Feb-2008  yamt sync with head.
 1.10.2.6 21-Jan-2008  yamt sync with head
 1.10.2.5 07-Dec-2007  yamt sync with head
 1.10.2.4 27-Oct-2007  yamt sync with head.
 1.10.2.3 03-Sep-2007  yamt sync with head.
 1.10.2.2 26-Feb-2007  yamt sync with head.
 1.10.2.1 21-Jun-2006  yamt sync with head.
 1.11.2.1 20-Oct-2005  yamt adapt cd9660.
 1.13.26.2 24-Mar-2007  yamt sync with head.
 1.13.26.1 27-Feb-2007  yamt - sync with head.
- move sched_changepri back to kern_synch.c as it doesn't know PPQ anymore.
 1.14.4.8 24-Oct-2007  ad cd9660_done: destroy locks.
 1.14.4.7 24-Oct-2007  ad - Kill ISODEVMAP.
- Mark cd9660 MPSAFE.
 1.14.4.6 24-Oct-2007  ad - Fix a race in cd9660_vget().
- simplelock -> mutex.
 1.14.4.5 16-Sep-2007  ad Checkpoint work in progress on the vnode lifecycle and reference counting
stuff. This makes it work properly without kernel_lock and fixes a few
quite old bugs. See vfs_subr.c 1.283.2.17 for details.
 1.14.4.4 15-Jul-2007  ad Sync with head.
 1.14.4.3 13-May-2007  ad - Pass the error number and residual count to biodone(), and let it handle
setting error indicators. Prepare to eliminate B_ERROR.
- Add a flag argument to brelse() to be set into the buf's flags, instead
of doing it directly. Typically used to set B_INVAL.
- Add a "struct cpu_info *" argument to kthread_create(), to be used to
create bound threads. Change "bool mpsafe" to "int flags".
- Allow exit of LWPs in the IDL state when (l != curlwp).
- More locking fixes & conversion to the new API.
 1.14.4.2 13-Mar-2007  ad Pull in the initial set of changes for the vmlocking branch.
 1.14.4.1 13-Mar-2007  ad Sync with head.
 1.15.4.1 09-Dec-2007  reinoud Pullup to HEAD
 1.15.2.1 11-Jul-2007  mjf Sync with head.
 1.16.10.1 14-Oct-2007  yamt sync with head.
 1.16.8.3 23-Mar-2008  matt sync with HEAD
 1.16.8.2 09-Jan-2008  matt sync with HEAD
 1.16.8.1 06-Nov-2007  matt sync with HEAD
 1.16.6.3 09-Dec-2007  jmcneill Sync with HEAD.
 1.16.6.2 27-Nov-2007  joerg Sync with HEAD. amd64 Xen support needs testing.
 1.16.6.1 26-Oct-2007  joerg Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.
 1.17.4.3 18-Feb-2008  mjf Sync with HEAD.
 1.17.4.2 27-Dec-2007  mjf Sync with HEAD.
 1.17.4.1 08-Dec-2007  mjf Sync with HEAD.
 1.18.2.2 08-Dec-2007  ad Sync with head.
 1.18.2.1 04-Dec-2007  ad Pull the vmlocking changes into a new branch.
 1.19.4.2 19-Jan-2008  bouyer Sync with HEAD
 1.19.4.1 02-Jan-2008  bouyer Sync with HEAD
 1.22.6.2 02-Jun-2008  mjf Sync with HEAD.
 1.22.6.1 03-Apr-2008  mjf Sync with HEAD.
 1.22.2.1 24-Mar-2008  keiichi sync with head.
 1.23.4.2 11-Aug-2010  yamt sync with head.
 1.23.4.1 16-May-2008  yamt sync with head.
 1.23.2.1 18-May-2008  yamt sync with head.
 1.24.28.1 21-May-2014  bouyer Pull up following revision(s) (requested by martin in ticket #1904):
sys/fs/cd9660/cd9660_node.c: revision 1.31
PR kern/48787: inode calculation from ISO9660 block offset might get
truncated to 32bit - force the whole expression to be evaluated as ino_t.
Patch from Thomas Schmitt, with minor modifications (and reworded comment).
 1.24.24.1 21-May-2014  bouyer Pull up following revision(s) (requested by martin in ticket #1904):
sys/fs/cd9660/cd9660_node.c: revision 1.31
PR kern/48787: inode calculation from ISO9660 block offset might get
truncated to 32bit - force the whole expression to be evaluated as ino_t.
Patch from Thomas Schmitt, with minor modifications (and reworded comment).
 1.24.22.4 31-May-2011  rmind sync with head
 1.24.22.3 05-Mar-2011  rmind sync with head
 1.24.22.2 03-Jul-2010  rmind sync with head
 1.24.22.1 16-Mar-2010  rmind Change struct uvm_object::vmobjlock to be dynamically allocated with
mutex_obj_alloc(). It allows us to share the locks among UVM objects.
 1.24.20.1 17-Aug-2010  uebayasi Sync with HEAD.
 1.24.10.1 21-May-2014  bouyer Pull up following revision(s) (requested by martin in ticket #1904):
sys/fs/cd9660/cd9660_node.c: revision 1.31
PR kern/48787: inode calculation from ISO9660 block offset might get
truncated to 32bit - force the whole expression to be evaluated as ino_t.
Patch from Thomas Schmitt, with minor modifications (and reworded comment).
 1.27.2.1 06-Jun-2011  jruoho Sync with HEAD.
 1.28.2.1 23-Jun-2011  cherry Catchup with rmind-uvmplock merge.
 1.29.22.1 21-May-2014  bouyer Pull up following revision(s) (requested by martin in ticket #1062):
sys/fs/cd9660/cd9660_node.c: revision 1.31
PR kern/48787: inode calculation from ISO9660 block offset might get
truncated to 32bit - force the whole expression to be evaluated as ino_t.
Patch from Thomas Schmitt, with minor modifications (and reworded comment).
 1.29.16.1 18-May-2014  rmind sync with head
 1.29.14.1 21-May-2014  bouyer Pull up following revision(s) (requested by martin in ticket #1062):
sys/fs/cd9660/cd9660_node.c: revision 1.31
PR kern/48787: inode calculation from ISO9660 block offset might get
truncated to 32bit - force the whole expression to be evaluated as ino_t.
Patch from Thomas Schmitt, with minor modifications (and reworded comment).
 1.29.12.2 03-Dec-2017  jdolecek update from HEAD
 1.29.12.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.29.8.1 21-May-2014  bouyer Pull up following revision(s) (requested by martin in ticket #1062):
sys/fs/cd9660/cd9660_node.c: revision 1.31
PR kern/48787: inode calculation from ISO9660 block offset might get
truncated to 32bit - force the whole expression to be evaluated as ino_t.
Patch from Thomas Schmitt, with minor modifications (and reworded comment).
 1.29.2.1 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")
 1.30.2.1 10-Aug-2014  tls Rebase.
 1.33.2.1 17-Jan-2015  martin Pull up following revision(s) (requested by maxv in ticket #427):
sys/compat/svr4/svr4_schedctl.c: revision 1.8
sys/netinet/tcp_timer.c: revision 1.88
sys/miscfs/genfs/layer_vfsops.c: revision 1.45
sys/compat/svr4/svr4_ioctl.c: revision 1.37
sys/ufs/chfs/chfs_vfsops.c: revision 1.14
sys/miscfs/fdesc/fdesc_vfsops.c: revision 1.91
sys/compat/linux/arch/i386/linux_ptrace.c: revision 1.30
sys/compat/common/kern_time_50.c: revision 1.28
sys/netinet6/ip6_forward.c: revision 1.74
sys/miscfs/umapfs/umap_vnops.c: revision 1.57
sys/compat/svr4/svr4_fcntl.c: revision 1.74
distrib/sets/lists/comp/mi: revision 1.1931
sys/netinet6/udp6_output.c: revision 1.46
sys/fs/puffs/puffs_compat.c: revision 1.3
sys/fs/udf/udf_rename.c: revision 1.11
sys/compat/svr4/svr4_filio.c: revision 1.24
sys/fs/udf/udf_rename.c: revision 1.12
sys/netinet/tcp_usrreq.c: revision 1.202
sys/miscfs/umapfs/umap_subr.c: revision 1.29
sys/compat/linux/common/linux_fadvise64.c: revision 1.3
sys/netinet/if_atm.c: revision 1.34
sys/miscfs/procfs/procfs_subr.c: revision 1.106
sys/miscfs/genfs/layer_subr.c: revision 1.37
sys/netinet/tcp_sack.c: revision 1.30
sys/compat/freebsd/freebsd_misc.c: revision 1.33
sys/compat/freebsd/freebsd_file.c: revision 1.33
sys/ufs/chfs/chfs_vnode.c: revision 1.12
sys/compat/svr4/svr4_ttold.c: revision 1.34
sys/compat/linux/common/linux_file.c: revision 1.114
sys/compat/linux/arch/mips/linux_machdep.c: revision 1.43
sys/compat/linux/common/linux_signal.c: revision 1.76
sys/compat/common/compat_util.c: revision 1.46
sys/compat/linux/arch/arm/linux_ptrace.c: revision 1.18
sys/compat/svr4/svr4_sockio.c: revision 1.36
sys/compat/linux/arch/arm/linux_machdep.c: revision 1.32
sys/compat/svr4/svr4_signal.c: revision 1.66
sys/kern/kern_exec.c: revision 1.410
sys/fs/puffs/puffs_vfsops.c: revision 1.115
sys/compat/svr4/svr4_exec_elf64.c: revision 1.15
sys/compat/linux/arch/i386/linux_machdep.c: revision 1.159
sys/compat/linux/arch/alpha/linux_machdep.c: revision 1.50
sys/compat/linux32/common/linux32_misc.c: revision 1.24
sys/netinet/in_pcb.c: revision 1.153
sys/sys/malloc.h: revision 1.116
sys/compat/common/if_43.c: revision 1.9
share/man/man9/Makefile: revision 1.380
sys/netinet/tcp_vtw.c: revision 1.12
sys/miscfs/umapfs/umap_vfsops.c: revision 1.95
sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.186
sys/compat/common/uipc_syscalls_43.c: revision 1.46
sys/ufs/ext2fs/ext2fs_vnops.c: revision 1.115
sys/fs/puffs/puffs_msgif.c: revision 1.97
sys/compat/svr4/svr4_ipc.c: revision 1.27
sys/compat/linux/common/linux_exec.c: revision 1.117
sys/ufs/ext2fs/ext2fs_readwrite.c: revision 1.66
sys/netinet/tcp_output.c: revision 1.179
sys/compat/svr4/svr4_termios.c: revision 1.28
sys/fs/udf/udf_strat_bootstrap.c: revision 1.4
sys/fs/puffs/puffs_subr.c: revision 1.67
sys/fs/puffs/puffs_node.c: revision 1.36
sys/miscfs/overlay/overlay_vnops.c: revision 1.21
sys/fs/cd9660/cd9660_node.c: revision 1.34
sys/netinet/raw_ip.c: revision 1.146
sys/sys/mallocvar.h: revision 1.13
sys/miscfs/overlay/overlay_vfsops.c: revision 1.63
share/man/man9/malloc.9: revision 1.50
sys/netinet6/dest6.c: revision 1.18
sys/compat/linux/common/linux_uselib.c: revision 1.33
sys/compat/linux/common/linux_socket.c: revision 1.120
share/man/man9/malloc.9: revision 1.51
sys/netinet/tcp_subr.c: revision 1.257
sys/compat/linux/common/linux_socketcall.c: revision 1.45
sys/compat/linux/common/linux_fadvise64_64.c: revision 1.3
sys/compat/freebsd/freebsd_ipc.c: revision 1.17
sys/compat/linux/common/linux_misc_notalpha.c: revision 1.109
sys/compat/linux/arch/alpha/linux_pipe.c: revision 1.17
sys/netinet6/in6_pcb.c: revision 1.132
sys/netinet6/in6_ifattach.c: revision 1.94
sys/compat/svr4/svr4_exec_elf32.c: revision 1.15
sys/miscfs/nullfs/null_vfsops.c: revision 1.90
sys/fs/cd9660/cd9660_util.c: revision 1.12
sys/compat/linux/arch/powerpc/linux_machdep.c: revision 1.48
sys/compat/freebsd/freebsd_exec_elf32.c: revision 1.20
sys/miscfs/procfs/procfs_vfsops.c: revision 1.94
sys/compat/linux/arch/powerpc/linux_ptrace.c: revision 1.28
sys/compat/linux/common/linux_sched.c: revision 1.67
sys/compat/linux/common/linux_exec_aout.c: revision 1.67
sys/compat/linux/common/linux_pipe.c: revision 1.67
sys/compat/linux/common/linux_llseek.c: revision 1.34
sys/compat/linux/arch/mips/linux_ptrace.c: revision 1.10
Do not uselessly include <sys/malloc.h>.
Cleanup:
- remove struct kmembuckets (dead)
- correctly deadify MALLOC_XX
- remove MALLOC_DEFINE_LIMIT and MALLOC_JUSTDEFINE_LIMIT (dead)
- remove malloc_roundup(), malloc_type_setlimit(), MALLOC_DEFINE_LIMIT()
and MALLOC_JUSTDEFINE_LIMIT() from man 9 malloc
New sentence, new line. Bump date for previous.
Obsolete malloc_roundup(9), malloc_type_setlimit(9) and MALLOC_DEFINE_LIMIT(9)
man pages.
 1.34.4.1 26-Apr-2017  pgoyette Sync with HEAD
 1.34.2.2 28-Aug-2017  skrll Sync with HEAD
 1.34.2.1 05-Oct-2016  skrll Sync with HEAD
 1.35.2.1 21-Apr-2017  bouyer Sync with HEAD
 1.18 27-Mar-2022  christos dedup the eofs link/symlink methods
 1.17 18-Jul-2021  dholland Abolish all the silly indirection macros for initializing vnode ops tables.

These are things of the form #define foofs_op genfs_op, or #define
foofs_op genfs_eopnotsupp, or similar. They serve no purpose besides
obfuscation, and have gotten cutpasted all over everywhere.
 1.16 16-Jun-2014  hannken branches: 1.16.44;
Change cd9660 from hashlist to vcache.
 1.15 14-Jun-2014  hannken Remove the hints "isodir" and "relocated" from cd9660_vget_internal()
and always reread the directory entry by inumber. For directories
the directory entry is always its "." entry.

Always read directories via the device vnode to prevent buffer cache
inconsistency. Keep i_devvp as a hint for fstat(1) and friends and
always use im_devvp for reads. No need to vref()/vrele() i_devvp.

The additional bread is either cached because cd9660_lookup() just
released the buffer or will be used in the near future when the
directory gets traversed during lookup.

No objections on tech-kern@
 1.14 27-Feb-2008  matt branches: 1.14.48; 1.14.64;
Convert to ansi definitions from old-style definitons.
 1.13 08-Dec-2007  ad branches: 1.13.8; 1.13.12;
Merge locking changes + fixes from the vmlocking branch.
 1.12 03-Dec-2005  christos branches: 1.12.30; 1.12.34; 1.12.44; 1.12.46; 1.12.56;
protect against multiple inclusion instead of forbidding their access from
userland, and #ifdef _KERNEL all their kernel functions.
 1.11 03-Dec-2005  christos - protect userland exported files against multiple inclusion.
- make sure that kernel only files don't compile in userland using #error
- XXX: some kernel only files still get installed.
- XXX: some files used in userland, don't get installed.
 1.10 11-Nov-2005  yamt - ignore truncation for VCHR/VBLK/VFIFO as it used to be
before yamt-vop merge. PR/32049 from Atsushi Onoe.
- reject setattr which attempts to change size of VLNK/VSOCK.
 1.9 02-Nov-2005  yamt merge yamt-vop branch. remove following VOPs.

VOP_BLKATOFF
VOP_VALLOC
VOP_BALLOC
VOP_REALLOCBLKS
VOP_VFREE
VOP_TRUNCATE
VOP_UPDATE
 1.8 30-Aug-2005  xtraeme branches: 1.8.2;
Remove an extra ')'
 1.7 30-Aug-2005  xtraeme Remove __P()
 1.6 20-Jun-2004  dillo branches: 1.6.12;
Use unsigned long for file size and location; avoids sign extension
for files >2GB. Okayed by Martin Husemann.
 1.5 07-Aug-2003  agc branches: 1.5.2;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.4 29-Jun-2003  fvdl branches: 1.4.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
 1.3 29-Jun-2003  thorpej Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget(). Turns out
that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
just to appease the above.
 1.2 28-Jun-2003  darrenr Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V
 1.1 23-Dec-2002  jdolecek branches: 1.1.2;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_node.h was added on branch nathanw_sa on 2002-12-29 19:55:37 +0000
 1.4.2.7 11-Dec-2005  christos Sync with head.
 1.4.2.6 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.4.2.5 21-Sep-2004  skrll Fix the sync with head I botched.
 1.4.2.4 18-Sep-2004  skrll Sync with HEAD.
 1.4.2.3 24-Aug-2004  skrll Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget(). Turns out
that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
just to appease the above.
 1.4.2.2 03-Aug-2004  skrll Sync with HEAD
 1.4.2.1 02-Jul-2003  darrenr Apply the aborted ktrace-lwp changes to a specific branch. This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it. This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.
 1.5.2.1 22-Jun-2004  tron Pull up revision 1.6 (requested by dillo in ticket #525):
Use unsigned long for file size and location; avoids sign extension
for files >2GB. Okayed by Martin Husemann.
 1.6.12.3 17-Mar-2008  yamt sync with head.
 1.6.12.2 21-Jan-2008  yamt sync with head
 1.6.12.1 21-Jun-2006  yamt sync with head.
 1.8.2.2 29-Oct-2005  yamt cd9660_setattr: remove extra checks. return EOPNOTSUPP immediately.
suggested by Chuck Silvers.
 1.8.2.1 20-Oct-2005  yamt adapt cd9660.
 1.12.56.1 04-Dec-2007  ad Pull the vmlocking changes into a new branch.
 1.12.46.2 23-Mar-2008  matt sync with HEAD
 1.12.46.1 09-Jan-2008  matt sync with HEAD
 1.12.44.1 09-Dec-2007  jmcneill Sync with HEAD.
 1.12.34.1 09-Dec-2007  reinoud Pullup to HEAD
 1.12.30.2 24-Oct-2007  ad - Kill ISODEVMAP.
- Mark cd9660 MPSAFE.
 1.12.30.1 24-Oct-2007  ad - Fix a race in cd9660_vget().
- simplelock -> mutex.
 1.13.12.1 03-Apr-2008  mjf Sync with HEAD.
 1.13.8.1 24-Mar-2008  keiichi sync with head.
 1.14.64.1 10-Aug-2014  tls Rebase.
 1.14.48.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.16.44.1 01-Aug-2021  thorpej Sync with HEAD.
 1.18 28-Mar-2015  maxv Remove the 'cred' argument from bread(). Remove a now unused var in
ffs_snapshot.c. Update the man page accordingly.

ok hannken@
 1.17 27-Sep-2011  christos branches: 1.17.12; 1.17.30;
use ISO_MAXNAMLEN instead of NAME_MAX
 1.16 16-May-2008  hannken Make sure all cached buffers with valid, not yet written data have been
run through copy-on-write. Call fscow_run() with valid data where possible.

The LP_UFSCOW hack is no longer needed to protect ffs_copyonwrite() against
endless recursion.

- Add a flag B_MODIFY to bread(), breada() and breadn(). If set the caller
intends to modify the buffer returned.

- Always run copy-on-write on buffers returned from ffs_balloc().

- Add new function ffs_getblk() that gets a buffer, assigns a new blkno,
may clear the buffer and runs copy-on-write. Process possible errors
from getblk() or fscow_run(). Part of PR kern/38664.

Welcome to 4.99.63

Reviewed by: YAMAMOTO Takashi <yamt@netbsd.org>
 1.15 27-Feb-2008  matt branches: 1.15.2; 1.15.4; 1.15.6;
Convert to ansi definitions from old-style definitons.
 1.14 08-Oct-2007  ad branches: 1.14.14; 1.14.18;
Merge brelse() changes from the vmlocking branch.
 1.13 04-Mar-2007  christos branches: 1.13.2; 1.13.14; 1.13.16; 1.13.18;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.12 16-Nov-2006  christos branches: 1.12.4;
__unused removal on arguments; approved by core.
 1.11 12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.10 14-May-2006  elad branches: 1.10.8; 1.10.10;
integrate kauth.
 1.9 11-Dec-2005  christos branches: 1.9.4; 1.9.6; 1.9.8; 1.9.10; 1.9.12;
merge ktrace-lwp.
 1.8 30-Aug-2005  xtraeme Remove __P()
 1.7 29-May-2005  christos branches: 1.7.2;
- rename variables to avoid shadowing.
- add a few const.
 1.6 26-Feb-2005  perry nuke trailing whitespace
 1.5 21-Nov-2004  jdolecek branches: 1.5.4; 1.5.6;
when Joliet extension is in use, encode the Joliet Unicode file names
into UTF-8, rather than filtering them to ISO-8859-1 subset

provide vfs.cd9660.utf8_joliet sysctl to switch to the former
iso-8859-1-only handling, default is to UTF-8 encode
 1.4 20-Nov-2004  jdolecek whitespace cleanup
 1.3 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.2 16-May-2003  itojun branches: 1.2.2;
use strlcpy. check size if we are to use namei buffer.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_rrip.c was added on branch nathanw_sa on 2002-12-29 19:55:38 +0000
 1.2.2.6 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.2.2.5 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.2.2.4 29-Nov-2004  skrll Sync with HEAD.
 1.2.2.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.2.2.2 18-Sep-2004  skrll Sync with HEAD.
 1.2.2.1 03-Aug-2004  skrll Sync with HEAD
 1.5.6.1 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.5.4.1 29-Apr-2005  kent sync with -current
 1.7.2.5 17-Mar-2008  yamt sync with head.
 1.7.2.4 27-Oct-2007  yamt sync with head.
 1.7.2.3 03-Sep-2007  yamt sync with head.
 1.7.2.2 30-Dec-2006  yamt sync with head.
 1.7.2.1 21-Jun-2006  yamt sync with head.
 1.9.12.1 24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.9.10.1 06-May-2006  christos - Move kauth_cred_t declaration to <sys/types.h>
- Cleanup struct ucred; forward declarations that are unused.
- Don't include <sys/kauth.h> in any header, but include it in the c files
that need it.

Approved by core.
 1.9.8.1 24-May-2006  yamt sync with head.
 1.9.6.1 01-Jun-2006  kardel Sync with head.
 1.9.4.1 09-Sep-2006  rpaulo sync with head
 1.10.10.2 10-Dec-2006  yamt sync with head.
 1.10.10.1 22-Oct-2006  yamt sync with head
 1.10.8.1 18-Nov-2006  ad Sync with head.
 1.12.4.1 12-Mar-2007  rmind Sync with HEAD.
 1.13.18.1 14-Oct-2007  yamt sync with head.
 1.13.16.2 23-Mar-2008  matt sync with HEAD
 1.13.16.1 06-Nov-2007  matt sync with HEAD
 1.13.14.1 26-Oct-2007  joerg Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.
 1.13.2.1 13-May-2007  ad - Pass the error number and residual count to biodone(), and let it handle
setting error indicators. Prepare to eliminate B_ERROR.
- Add a flag argument to brelse() to be set into the buf's flags, instead
of doing it directly. Typically used to set B_INVAL.
- Add a "struct cpu_info *" argument to kthread_create(), to be used to
create bound threads. Change "bool mpsafe" to "int flags".
- Allow exit of LWPs in the IDL state when (l != curlwp).
- More locking fixes & conversion to the new API.
 1.14.18.2 02-Jun-2008  mjf Sync with HEAD.
 1.14.18.1 03-Apr-2008  mjf Sync with HEAD.
 1.14.14.1 24-Mar-2008  keiichi sync with head.
 1.15.6.1 23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.15.4.1 04-May-2009  yamt sync with head.
 1.15.2.1 18-May-2008  yamt sync with head.
 1.17.30.1 06-Apr-2015  skrll Sync with HEAD
 1.17.12.1 03-Dec-2017  jdolecek update from HEAD
 1.3 03-Dec-2005  christos - protect userland exported files against multiple inclusion.
- make sure that kernel only files don't compile in userland using #error
- XXX: some kernel only files still get installed.
- XXX: some files used in userland, don't get installed.
 1.2 07-Aug-2003  agc branches: 1.2.16;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2; 1.1.4;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.4.4 11-Dec-2005  christos Sync with head.
 1.1.4.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.1.4.2 18-Sep-2004  skrll Sync with HEAD.
 1.1.4.1 03-Aug-2004  skrll Sync with HEAD
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_rrip.h was added on branch nathanw_sa on 2002-12-29 19:55:39 +0000
 1.2.16.1 21-Jun-2006  yamt sync with head.
 1.16 25-May-2024  tsutsui Appease warnings on building tools/installboot on Cygwin.
 1.15 19-May-2024  tsutsui Make cd9660_util.c usable in userland tools like installboot(8).

This was partially done for src/distrib/cdrom/macppc_installboot,
but more strict prototypes are necessary for native binary builds.
 1.14 09-Mar-2016  christos branches: 1.14.48;
remove installboot.h; it is not needed
 1.13 09-Mar-2016  christos Make it usable from userland.
 1.12 10-Nov-2014  maxv branches: 1.12.2;
Do not uselessly include <sys/malloc.h>.
 1.11 01-Jun-2014  martin branches: 1.11.2;
PR kern/48815: do not skip ';' twice when comparing file versions.
Patch from Thomas Schmitt.
 1.10 27-Sep-2011  christos branches: 1.10.8; 1.10.12; 1.10.26;
define and use ISO_MAXNAMLEN instead of MAXNAMLEN
 1.9 27-Feb-2008  matt Convert to ansi definitions from old-style definitons.
 1.8 08-Dec-2006  enami branches: 1.8.20; 1.8.36; 1.8.40;
The function wget() is always responsible to maintain length of component
not yet compared. Otherwise pathname lookup fails on certain condition.
 1.7 28-Aug-2006  christos branches: 1.7.2; 1.7.4;
correct bogus loop test; used to be always true.
 1.6 11-Dec-2005  christos branches: 1.6.4; 1.6.8;
merge ktrace-lwp.
 1.5 28-Dec-2004  jdolecek branches: 1.5.10;
size_t police

pointed out by Jesse Off on source-changes@
 1.4 27-Dec-2004  jdolecek change wget_utf8() to not require NUL-terminated string as input,
and adjust callers appropriately. cn_nameptr isn't NUL-terminated
for non-leaf components, so it's incorrect to assume it is always
NUL-terminated.

This fixes previous utf8-ization changes to not panic for cases
like 'echo */*/*.ps' in case the intermediate path components
are not in cache (yet).
 1.3 21-Nov-2004  jdolecek when Joliet extension is in use, encode the Joliet Unicode file names
into UTF-8, rather than filtering them to ISO-8859-1 subset

provide vfs.cd9660.utf8_joliet sysctl to switch to the former
iso-8859-1-only handling, default is to UTF-8 encode
 1.2 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2; 1.1.4;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.4.5 17-Jan-2005  skrll Sync with HEAD.
 1.1.4.4 29-Nov-2004  skrll Sync with HEAD.
 1.1.4.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.1.4.2 18-Sep-2004  skrll Sync with HEAD.
 1.1.4.1 03-Aug-2004  skrll Sync with HEAD
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_util.c was added on branch nathanw_sa on 2002-12-29 19:55:40 +0000
 1.5.10.2 17-Mar-2008  yamt sync with head.
 1.5.10.1 30-Dec-2006  yamt sync with head.
 1.6.8.1 03-Sep-2006  yamt sync with head.
 1.6.4.1 09-Sep-2006  rpaulo sync with head
 1.7.4.1 10-Dec-2006  yamt sync with head.
 1.7.2.1 12-Jan-2007  ad Sync with head.
 1.8.40.1 03-Apr-2008  mjf Sync with HEAD.
 1.8.36.1 24-Mar-2008  keiichi sync with head.
 1.8.20.1 23-Mar-2008  matt sync with HEAD
 1.10.26.1 10-Aug-2014  tls Rebase.
 1.10.12.2 03-Dec-2017  jdolecek update from HEAD
 1.10.12.1 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.10.8.1 03-Jun-2014  msaitoh Pull up following revision(s) (requested by martin in ticket #1073):
sys/fs/cd9660/cd9660_util.c: revision 1.11
PR kern/48815: do not skip ';' twice when comparing file versions.
Patch from Thomas Schmitt.
 1.11.2.1 17-Jan-2015  martin Pull up following revision(s) (requested by maxv in ticket #427):
sys/compat/svr4/svr4_schedctl.c: revision 1.8
sys/netinet/tcp_timer.c: revision 1.88
sys/miscfs/genfs/layer_vfsops.c: revision 1.45
sys/compat/svr4/svr4_ioctl.c: revision 1.37
sys/ufs/chfs/chfs_vfsops.c: revision 1.14
sys/miscfs/fdesc/fdesc_vfsops.c: revision 1.91
sys/compat/linux/arch/i386/linux_ptrace.c: revision 1.30
sys/compat/common/kern_time_50.c: revision 1.28
sys/netinet6/ip6_forward.c: revision 1.74
sys/miscfs/umapfs/umap_vnops.c: revision 1.57
sys/compat/svr4/svr4_fcntl.c: revision 1.74
distrib/sets/lists/comp/mi: revision 1.1931
sys/netinet6/udp6_output.c: revision 1.46
sys/fs/puffs/puffs_compat.c: revision 1.3
sys/fs/udf/udf_rename.c: revision 1.11
sys/compat/svr4/svr4_filio.c: revision 1.24
sys/fs/udf/udf_rename.c: revision 1.12
sys/netinet/tcp_usrreq.c: revision 1.202
sys/miscfs/umapfs/umap_subr.c: revision 1.29
sys/compat/linux/common/linux_fadvise64.c: revision 1.3
sys/netinet/if_atm.c: revision 1.34
sys/miscfs/procfs/procfs_subr.c: revision 1.106
sys/miscfs/genfs/layer_subr.c: revision 1.37
sys/netinet/tcp_sack.c: revision 1.30
sys/compat/freebsd/freebsd_misc.c: revision 1.33
sys/compat/freebsd/freebsd_file.c: revision 1.33
sys/ufs/chfs/chfs_vnode.c: revision 1.12
sys/compat/svr4/svr4_ttold.c: revision 1.34
sys/compat/linux/common/linux_file.c: revision 1.114
sys/compat/linux/arch/mips/linux_machdep.c: revision 1.43
sys/compat/linux/common/linux_signal.c: revision 1.76
sys/compat/common/compat_util.c: revision 1.46
sys/compat/linux/arch/arm/linux_ptrace.c: revision 1.18
sys/compat/svr4/svr4_sockio.c: revision 1.36
sys/compat/linux/arch/arm/linux_machdep.c: revision 1.32
sys/compat/svr4/svr4_signal.c: revision 1.66
sys/kern/kern_exec.c: revision 1.410
sys/fs/puffs/puffs_vfsops.c: revision 1.115
sys/compat/svr4/svr4_exec_elf64.c: revision 1.15
sys/compat/linux/arch/i386/linux_machdep.c: revision 1.159
sys/compat/linux/arch/alpha/linux_machdep.c: revision 1.50
sys/compat/linux32/common/linux32_misc.c: revision 1.24
sys/netinet/in_pcb.c: revision 1.153
sys/sys/malloc.h: revision 1.116
sys/compat/common/if_43.c: revision 1.9
share/man/man9/Makefile: revision 1.380
sys/netinet/tcp_vtw.c: revision 1.12
sys/miscfs/umapfs/umap_vfsops.c: revision 1.95
sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.186
sys/compat/common/uipc_syscalls_43.c: revision 1.46
sys/ufs/ext2fs/ext2fs_vnops.c: revision 1.115
sys/fs/puffs/puffs_msgif.c: revision 1.97
sys/compat/svr4/svr4_ipc.c: revision 1.27
sys/compat/linux/common/linux_exec.c: revision 1.117
sys/ufs/ext2fs/ext2fs_readwrite.c: revision 1.66
sys/netinet/tcp_output.c: revision 1.179
sys/compat/svr4/svr4_termios.c: revision 1.28
sys/fs/udf/udf_strat_bootstrap.c: revision 1.4
sys/fs/puffs/puffs_subr.c: revision 1.67
sys/fs/puffs/puffs_node.c: revision 1.36
sys/miscfs/overlay/overlay_vnops.c: revision 1.21
sys/fs/cd9660/cd9660_node.c: revision 1.34
sys/netinet/raw_ip.c: revision 1.146
sys/sys/mallocvar.h: revision 1.13
sys/miscfs/overlay/overlay_vfsops.c: revision 1.63
share/man/man9/malloc.9: revision 1.50
sys/netinet6/dest6.c: revision 1.18
sys/compat/linux/common/linux_uselib.c: revision 1.33
sys/compat/linux/common/linux_socket.c: revision 1.120
share/man/man9/malloc.9: revision 1.51
sys/netinet/tcp_subr.c: revision 1.257
sys/compat/linux/common/linux_socketcall.c: revision 1.45
sys/compat/linux/common/linux_fadvise64_64.c: revision 1.3
sys/compat/freebsd/freebsd_ipc.c: revision 1.17
sys/compat/linux/common/linux_misc_notalpha.c: revision 1.109
sys/compat/linux/arch/alpha/linux_pipe.c: revision 1.17
sys/netinet6/in6_pcb.c: revision 1.132
sys/netinet6/in6_ifattach.c: revision 1.94
sys/compat/svr4/svr4_exec_elf32.c: revision 1.15
sys/miscfs/nullfs/null_vfsops.c: revision 1.90
sys/fs/cd9660/cd9660_util.c: revision 1.12
sys/compat/linux/arch/powerpc/linux_machdep.c: revision 1.48
sys/compat/freebsd/freebsd_exec_elf32.c: revision 1.20
sys/miscfs/procfs/procfs_vfsops.c: revision 1.94
sys/compat/linux/arch/powerpc/linux_ptrace.c: revision 1.28
sys/compat/linux/common/linux_sched.c: revision 1.67
sys/compat/linux/common/linux_exec_aout.c: revision 1.67
sys/compat/linux/common/linux_pipe.c: revision 1.67
sys/compat/linux/common/linux_llseek.c: revision 1.34
sys/compat/linux/arch/mips/linux_ptrace.c: revision 1.10
Do not uselessly include <sys/malloc.h>.
Cleanup:
- remove struct kmembuckets (dead)
- correctly deadify MALLOC_XX
- remove MALLOC_DEFINE_LIMIT and MALLOC_JUSTDEFINE_LIMIT (dead)
- remove malloc_roundup(), malloc_type_setlimit(), MALLOC_DEFINE_LIMIT()
and MALLOC_JUSTDEFINE_LIMIT() from man 9 malloc
New sentence, new line. Bump date for previous.
Obsolete malloc_roundup(9), malloc_type_setlimit(9) and MALLOC_DEFINE_LIMIT(9)
man pages.
 1.12.2.1 19-Mar-2016  skrll Sync with HEAD
 1.14.48.1 22-Jun-2024  martin Pull up following revision(s) (requested by tsutsui in ticket #722):

sys/fs/cd9660/cd9660_util.c: revision 1.16
sys/arch/hp300/stand/common/clock.c: revision 1.14
sys/arch/hp300/stand/common/scsireg.h: revision 1.5
sys/arch/hp300/stand/common/scsireg.h: revision 1.6
sys/arch/hp300/stand/Makefile.buildboot: revision 1.38
sys/arch/hp300/include/bus.h: revision 1.23
sys/arch/hp300/stand/Makefile.buildboot: revision 1.39
sys/arch/hp300/stand/common/sd.c: revision 1.12
sys/arch/hp300/stand/common/prf.c: revision 1.6
sys/arch/hp300/stand/common/sd.c: revision 1.13
usr.sbin/installboot/installboot.8: revision 1.106
usr.sbin/installboot/Makefile: revision 1.59
sys/arch/hp300/stand/common/devopen.c: revision 1.14
usr.sbin/installboot/installboot.8: revision 1.107
sys/arch/hp300/stand/common/ite_dumb.c: revision 1.2
sys/arch/hp300/stand/common/devopen.c: revision 1.15
usr.sbin/installboot/installboot.8: revision 1.108
sys/fs/cd9660/cd9660_extern.h: revision 1.29
usr.sbin/installboot/installboot.8: revision 1.109
tools/Makefile.nbincludes: revision 1.11 (patch)
sys/arch/hp300/dev/rboxreg.h: revision 1.3
sys/arch/hp300/stand/common/scsivar.h: revision 1.5
sys/arch/hp300/dev/dnkbd.c: revision 1.14
sys/arch/hp300/hp300/trap.c: revision 1.156
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.12
sys/arch/hp300/dev/frodoreg.h: revision 1.6
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.13
sys/arch/hp300/stand/common/ite_sti.c: revision 1.2
sys/arch/hp300/stand/common/hil.c: revision 1.15
usr.sbin/installboot/arch/hp300.c: revision 1.18
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.14
sys/arch/hp300/dev/rbox.c: revision 1.4
usr.sbin/installboot/arch/hp300.c: revision 1.19
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.15
sys/sys/bootblock.h: revision 1.59
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.16
usr.sbin/installboot/installboot.h: revision 1.44
sys/arch/hp300/stand/mkboot/volhdr.h: file removal
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.17
sys/arch/hp300/dev/hpib.c: revision 1.45
usr.sbin/installboot/installboot.h: revision 1.45
usr.sbin/installboot/cd9660.c: revision 1.1
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.18
sys/arch/hp300/dev/topcatreg.h: revision 1.3
usr.sbin/installboot/cd9660.c: revision 1.2
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.19
sys/arch/hp300/stand/inst/inst.c: revision 1.25
sys/arch/hp300/stand/uboot/Makefile: revision 1.12
sys/arch/hp300/dev/dvbox.c: revision 1.4
sys/arch/hp300/dev/dma.c: revision 1.45
sys/arch/hp300/stand/uboot/Makefile: revision 1.13
sys/arch/hp300/stand/common/rd.c: revision 1.16
sys/arch/hp300/stand/inst/Makefile: revision 1.12
distrib/hp300/cdroms/installcd/Makefile: revision 1.4
sys/arch/hp300/stand/mkboot/volhdr.h: revision 1.6
sys/arch/hp300/stand/common/machdep.c: revision 1.16
usr.sbin/installboot/fstypes.c: revision 1.14
sys/arch/hp300/hp300/machdep.c: revision 1.238
sys/arch/hp300/include/cpu.h: revision 1.73
sys/arch/hp300/dev/diofbreg.h: revision 1.4
sys/arch/hp300/stand/common/scsi.c: revision 1.12
sys/arch/hp300/stand/common/netio.c: revision 1.19
sys/arch/hp300/stand/common/scsi.c: revision 1.13
sys/arch/hp300/dev/sti_sgc.c: revision 1.8
sys/arch/hp300/dev/rtc.c: revision 1.22
sys/arch/hp300/stand/mkboot/mkboot.c: revision 1.20
sys/arch/hp300/stand/common/conf.h: revision 1.4
sys/arch/hp300/hp300/autoconf.c: revision 1.111
sys/arch/hp300/stand/common/conf.c: revision 1.15
sys/arch/hp300/stand/mkboot/Makefile: revision 1.12
sys/arch/hp300/stand/mkboot/Makefile: revision 1.13
sys/arch/hp300/hp300/autoconf.c: revision 1.114
sys/arch/hp300/dev/dcmreg.h: revision 1.11
sys/arch/hp300/dev/diofbvar.h: revision 1.4
sys/arch/hp300/dev/dcm.c: revision 1.91
sys/fs/cd9660/cd9660_util.c: revision 1.15
sys/arch/hp300/dev/mcclock_frodo.c: revision 1.2

TAB/space cleanup.

installboot(8): formatting improvements

Use Ar foo instead of <foo>; this is mdoc.

Other formatting tweaks.
installboot(8): fix up markup

Don't overuse .Sy - when everything is highlighted, nothing is. Use
.Ic for options &c to get correct PostScript output (both are bold in
plain text).

Use Aq Ar inside .Pa, as both Pa and Ar are rendered as underscored
text in plain text output, and the distinction is lost.

Don't set examples in bold, but give them .Pp space around - they are
much easier to read this way.

Use consistent -width in FILES.
document how to use installboot on netbsd/vax.

PR/57909: Jan-Benedict Glaw: Don't include (build) timestamp when doing a
reproducible build
fix usage string, improve error handling.
add missing chunk for repro-build. fix gcc warnings.
avoid stringop truncation, fix copyright string to prevent assembler warnings.

Fix build as a tool (Jan-Benedict Glaw)

Fix integer overflow of strtol(3) for "loadpoint" address on ILP32 hosts.

This strtol(3) was introduced in rev 1.12 for PR/57909 after netbsd-10,
but it returns LONG_MAX (0x7FFFFFFF) for 0xFFF00000 on ILP32 hosts and
the wrong loadpoint causes "NOT ENOUGH MEMORY" error by the BOOTROMs
on loading uboot.lif on (at least) my 9000/360 and 9000/425t.

Misc cosmetic changes for mostly readability.
- KNF and add some newlines per blocks
- define and use proper bintobcd() macro
- make local functions and variables static

The same uboot.lif binaries are generated.

Rename ${PROGAOUT} -> ${PROGELF} to reflect reality.
Use proper signedness for the LIF file system data structures.

Ancient 4.3BSD used short and int for location, file size, file type,
and addresses etc. but all of them should be unsigned.

Also rename several variables and add comments for readability.
The LIF file system info can be found in "The HPDir Project" page:
https://www.hp9845.net/9845/projects/hpdir/
The same uboot.lif binaries are generated.

Add a preliminary CD boot support to uboot for preparation of PR/54455.
Briefly tested on mame, but not enalbed yet.

Recognize SCSI CD-ROM devices as a booted device properly.

Necessary for PR port-hp300/54455, to boot an md root root RAMDISK

kernel from CD-ROM without "WARNING: can't find match for bootdev:"
prompt.

Sync with src/sys/arch/hp300/stand/mkboot/volhdr.h rev 1.6.
https://mail-index.netbsd.org/source-changes/2024/05/07/msg151195.html

Use proper signedness for the LIF file system data structures.
mkboot should use this MI <sys/bootblock.h> and volhdr.h should
be removed soon.

Use MI <sys/bootblock.h> to refer LIF filesystem structures.
This should have been done when LIF definitions were initially added
to <sys/bootblock.h> for MI installboot(8).

Enable SUPPORT_CD on uboot.

Make cd9660_util.c usable in userland tools like installboot(8).

This was partially done for src/distrib/cdrom/macppc_installboot,
but more strict prototypes are necessary for native binary builds.

Install cd9660 related system headers for tools installboot(8) builds.

Reorder function prototypes per source files.

Add cd9660 support to search a bootloader file in the target file system.

Also add CD boot support for hp300, using a bootloader file in cd9660 fs.
This is a tool's part to close PR/54455.

HP 9000/300 machines read LIF directory entry allocated after
the LIF volume header at the top of the boot disk during bootstrap,
and a bootstrap file must be contiguously allocated on the disk
due to limitation of the LIF specification.

Current NetBSD/hp300's bootloader is larger than ~80KB so we have
to prepare a special 'boot' partition for FFS (that has only 8KB (ffsv1)
or 32KB (ffsv2) spaces) disks to put such a large bootloader.

On the other hand, on ISO9660 fs all files are allocated contiguously
so we can specify a bootloader file in the target ISO9660 directly
in the LIF directory entry.

Note we can simply use the existing "append" option to create bootable
CD ISO for hp300, but it looks some emulators (at leaset MAME) reject
such non-standard ISO files, i.e. with an appended bootloader file at
the end of the image.

Put a RAMDISK kernel and SYS_UBOOT into hp300 installcd to make it bootable.

This should finally close PR/54455.

Fix tools build errors on Cygwin.

Appease warnings on building tools/installboot on Cygwin.
 1.105 16-Feb-2025  joe remove unecessary branches
 1.104 15-May-2024  reinoud branches: 1.104.2;
Fixing potential, though unlikely overflow as detected by coverity scan
 1.103 03-Feb-2024  christos add checks for id and mask in the update case (thanks hannken)
 1.102 03-Feb-2024  christos need the new args pointer...
 1.101 03-Feb-2024  christos fix MNT_UPDATE (thanks hannken)
 1.100 03-Feb-2024  christos Provide backwards compatibility (pointed out by hannken)
 1.99 03-Feb-2024  hannken cd9660_mountroot: must initialize new args "fmask" and "dmask".
 1.98 02-Feb-2024  christos PR/57897: Ricardo Branco: Add support for mount options mask,dirmask,uid,gid
 1.97 03-May-2022  hannken Lock devvp for vinvalbuf().
 1.96 04-Apr-2020  ad Merge the remaining changes from the ad-namecache branch, affecting namei()
and getcwd():

- push vnode locking back as far as possible.
- do most lookups directly in the namecache, avoiding vnode locks & refs.
- don't block new refs to vnodes across VOP_INACTIVE().
- get shared locks for VOP_LOOKUP() if the file system supports it.
- correct lock types for VOP_ACCESS() / VOP_GETATTR() in a few places.

Possible future enhancements:

- make the lookups lockless.
- support dotdot lookups by being lockless and inferring absence of chroot.
- maybe make it work for layered file systems.
- avoid vnode references at the root & cwd.
 1.95 16-Mar-2020  pgoyette Use the module subsystem's ability to process SYSCTL_SETUP() entries to
automate installation of sysctl nodes.

Note that there are still a number of device and pseudo-device modules
that create entries tied to individual device units, rather than to the
module itself. These are not changed.
 1.94 17-Jan-2020  ad VFS_VGET(), VFS_ROOT(), VFS_FHTOVP(): give them a "int lktype" argument, to
allow us to get shared locks (or no lock) on the returned vnode. Matches
FreeBSD.
 1.93 17-Apr-2017  hannken branches: 1.93.2; 1.93.12; 1.93.18;
Remove unused argument "nextp" from vfs_busy() and vfs_unbusy().
Remove argument "keepref" from vfs_unbusy() and add vfs_ref() where needed.
 1.92 17-Apr-2017  hannken Add vfs_ref(mp) and vfs_rele(mp) to add or remove a reference to
struct mount. Rename vfs_destroy(mp) to vfs_rele(mp) and replace
incrementing mp->mnt_refcnt with vfs_ref(mp).
 1.91 17-Feb-2017  hannken Add generic genfs_suspendctl() and use it for all file systems.
Layered file systems need work.
 1.90 28-Mar-2015  maxv branches: 1.90.2; 1.90.4;
Remove the 'cred' argument from bread(). Remove a now unused var in
ffs_snapshot.c. Update the man page accordingly.

ok hannken@
 1.89 09-Jul-2014  maxv branches: 1.89.4;
Remove ROOTNAME (unused).
 1.88 22-Jun-2014  hannken CID 1223346: No need to check bp against NULL. It is always valid here.
 1.87 16-Jun-2014  hannken Change cd9660 from hashlist to vcache.
 1.86 14-Jun-2014  hannken Remove the hints "isodir" and "relocated" from cd9660_vget_internal()
and always reread the directory entry by inumber. For directories
the directory entry is always its "." entry.

Always read directories via the device vnode to prevent buffer cache
inconsistency. Keep i_devvp as a hint for fstat(1) and friends and
always use im_devvp for reads. No need to vref()/vrele() i_devvp.

The additional bread is either cached because cd9660_lookup() just
released the buffer or will be used in the near future when the
directory gets traversed during lookup.

No objections on tech-kern@
 1.85 13-May-2014  martin PR kern/48799: make filehandles properly use 64bit inodes on CD9660 file
systems. Patch from Thomas Schmitt, with slight modifications.
 1.84 16-Apr-2014  maxv An (un)privileged user can easily make the kernel dereference a NULL
pointer.

The kernel allows 'data' to be NULL; it's the fs's responsibility to
ensure that it isn't NULL (if the fs actually needs data).

ok christos@
 1.83 24-Mar-2014  dholland branches: 1.83.2;
Tidy up locking in cd9660_mount; thrash the lock less, and make it
clear that the lock is only dropped when calling iso_mountfs().

While here, don't use the vnode pointer's value after vrele().
 1.82 23-Mar-2014  hannken Change all vfsops to use C99 designated initializers.

No functional changes intended.
 1.81 25-Feb-2014  pooka Ensure that the top level sysctl nodes (kern, vfs, net, ...) exist before
the sysctl link sets are processed, and remove redundancy.

Shaves >13kB off of an amd64 GENERIC, not to mention >1k duplicate
lines of code.
 1.80 23-Nov-2013  christos change the mountlist CIRCLEQ into a TAILQ
 1.79 30-Sep-2013  hannken Replace macro v_specmountpoint with two functions spec_node_getmountedfs()
and spec_node_setmountedfs() to manage the file system mounted on a device.
Assert the device is a block device.

Welcome to 6.99.24

Discussed on tech-kern@ some time ago.

Reviewed by: David Holland <dholland@netbsd.org>
 1.78 23-Jun-2013  dholland branches: 1.78.2;
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
 1.77 19-Jun-2013  dholland blkoff() -> cd9660_blkoff()
blksize() -> cd9660_blksize()
 1.76 20-Dec-2012  hannken Change bread() and breadn() to never return a buffer on
error and modify all callers to not brelse() on error.

Welcome to 6.99.16

PR kern/46282 (6.0_BETA crash: msdosfs_bmap -> pcbmap -> bread -> bio_doread)
 1.75 13-Mar-2012  elad branches: 1.75.2;
Replace the remaining KAUTH_GENERIC_ISSUSER authorization calls with
something meaningful. All relevant documentation has been updated or
written.

Most of these changes were brought up in the following messages:

http://mail-index.netbsd.org/tech-kern/2012/01/18/msg012490.html
http://mail-index.netbsd.org/tech-kern/2012/01/19/msg012502.html
http://mail-index.netbsd.org/tech-kern/2012/02/17/msg012728.html

Thanks to christos, manu, njoly, and jmmv for input.

Huge thanks to pgoyette for spinning these changes through some build
cycles and ATF.
 1.74 14-Nov-2011  hannken branches: 1.74.4; 1.74.6; 1.74.10; 1.74.12;
VOP_OPEN() needs a locked vnode. All these copy-and-pasted xxxfs_mount()
implementations need more review.
 1.73 27-Sep-2011  christos branches: 1.73.2;
define and use ISO_MAXNAMLEN instead of MAXNAMLEN
 1.72 12-Jun-2011  rmind Welcome to 5.99.53! Merge rmind-uvmplock branch:

- Reorganize locking in UVM and provide extra serialisation for pmap(9).
New lock order: [vmpage-owner-lock] -> pmap-lock.

- Simplify locking in some pmap(9) modules by removing P->V locking.

- Use lock object on vmobjlock (and thus vnode_t::v_interlock) to share
the locks amongst UVM objects where necessary (tmpfs, layerfs, unionfs).

- Rewrite and optimise x86 TLB shootdown code, make it simpler and cleaner.
Add TLBSTATS option for x86 to collect statistics about TLB shootdowns.

- Unify /dev/mem et al in MI code and provide required locking (removes
kernel-lock on some ports). Also, avoid cache-aliasing issues.

Thanks to Andrew Doran and Joerg Sonnenberger, as their initial patches
formed the core changes of this branch.
 1.71 24-Jun-2010  hannken branches: 1.71.6;
Clean up vnode lock operations pass 2:

VOP_UNLOCK(vp, flags) -> VOP_UNLOCK(vp): Remove the unneeded flags argument.

Welcome to 5.99.32.

Discussed on tech-kern.
 1.70 26-Jan-2010  mlelstv branches: 1.70.2; 1.70.4;
Drop two uses of disk label data.

msdosfs and cd9660 are the only filesystems that verify the filesystem
type in the label. This is the wrong place, sanity checks should only
rely on the inner structure of the filesystem (like signatures or
magic numbers).

msdosfs also used the device type information from the label to
deduce a filesystem parameter heuristically for the gemdos variant.
If there is no information inside the filesystem data itself, this
should be an explicit mount option.
 1.69 08-Jan-2010  pooka The VATTR_NULL/VREF/VHOLD/HOLDRELE() macros lost their will to live
years ago when the kernel was modified to not alter ABI based on
DIAGNOSTIC, and now just call the respective function interfaces
(in lowercase). Plenty of mix'n match upper/lowercase has creeped
into the tree since then. Nuke the macros and convert all callsites
to lowercase.

no functional change
 1.68 19-Oct-2009  tsutsui Apply a similar fix for mount function from ffs_vfsops.c rev 1.186:
Change cd9660_mount, in MNT_UPDATE case, to check dev_t's for equality
instead of just vnode pointers. Fixes erroneous "Invalid argument"
errors from mount(8) with -u against cd9660 root in the presence of
mfs or tmpfs /dev prepared after initial mountroot.

Tested on QEMU running cobalt Restore CD.
 1.67 29-Jun-2009  dholland Convert 67 namei call sites to use namei_simple, in these functions:

check_console, veriexecclose, veriexec_delete, veriexec_file_add,
emul_find_root, coff_load_shlib (sh3 version), coff_load_shlib,
compat_20_sys_statfs, compat_20_netbsd32_statfs,
ELFNAME2(netbsd32,probe_noteless), darwin_sys_statfs,
ibcs2_sys_statfs, ibcs2_sys_statvfs, linux_sys_uselib,
osf1_sys_statfs, sunos_sys_statfs, sunos32_sys_statfs,
ultrix_sys_statfs, do_sys_mount, fss_create_files (3 of 4),
adosfs_mount, cd9660_mount, coda_ioctl, coda_mount, ext2fs_mount,
ffs_mount, filecore_mount, hfs_mount, lfs_mount, msdosfs_mount,
ntfs_mount, sysvbfs_mount, udf_mount, union_mount, sys_chflags,
sys_lchflags, sys_chmod, sys_lchmod, sys_chown, sys_lchown,
sys___posix_chown, sys___posix_lchown, sys_link, do_sys_pstatvfs,
sys_quotactl, sys_revoke, sys_truncate, do_sys_utimes, sys_extattrctl,
sys_extattr_set_file, sys_extattr_set_link, sys_extattr_get_file,
sys_extattr_get_link, sys_extattr_delete_file,
sys_extattr_delete_link, sys_extattr_list_file, sys_extattr_list_link,
sys_setxattr, sys_lsetxattr, sys_getxattr, sys_lgetxattr,
sys_listxattr, sys_llistxattr, sys_removexattr, sys_lremovexattr

All have been scrutinized (several times, in fact) and compile-tested,
but not all have been explicitly tested in action.

XXX: While I haven't (intentionally) changed the use or nonuse of
XXX: TRYEMULROOT in any of these places, I'm not convinced all the
XXX: uses are correct; an audit might be desirable.
 1.66 25-Apr-2009  elad Add genfs_can_mount() and use it to prevent some more code duplication of
the security checks when mounting a device (VOP_ACCESS() + kauth(9) call)).

Proposed with no objections on tech-kern@:

http://mail-index.netbsd.org/tech-kern/2009/04/20/msg004859.html

The vnode is always expected to be locked, so no locking is done outside
the file-system code.
 1.65 22-Jan-2009  cegger branches: 1.65.2;
buildfix: re-adapt for major/minor returning 32bit value again.
 1.64 11-Jan-2009  cegger make this compile
 1.63 28-Jun-2008  rumble branches: 1.63.4; 1.63.6; 1.63.12;
Create sysctl entries during module initialisation and destroy them
appropriately.

Many of these file systems are now ready for modularisation.
 1.62 16-May-2008  hannken branches: 1.62.2;
Make sure all cached buffers with valid, not yet written data have been
run through copy-on-write. Call fscow_run() with valid data where possible.

The LP_UFSCOW hack is no longer needed to protect ffs_copyonwrite() against
endless recursion.

- Add a flag B_MODIFY to bread(), breada() and breadn(). If set the caller
intends to modify the buffer returned.

- Always run copy-on-write on buffers returned from ffs_balloc().

- Add new function ffs_getblk() that gets a buffer, assigns a new blkno,
may clear the buffer and runs copy-on-write. Process possible errors
from getblk() or fscow_run(). Part of PR kern/38664.

Welcome to 4.99.63

Reviewed by: YAMAMOTO Takashi <yamt@netbsd.org>
 1.61 06-May-2008  ad branches: 1.61.2;
PR kern/38141 lookup/vfs_busy acquire rwlock recursively

Simplify the mount locking. Remove all the crud to deal with recursion on
the mount lock, and crud to deal with unmount as another weirdo lock.

Hopefully this will once and for all fix the deadlocks with this. With this
commit there are two locks on each mount:

- krwlock_t mnt_unmounting. This is used to prevent unmount across critical
sections like getnewvnode(). It's only ever read locked with rw_tryenter(),
and is only ever write locked in dounmount(). A write hold can't be taken
on this lock if the current LWP could hold a vnode lock.

- kmutex_t mnt_updating. This is taken by threads updating the mount, for
example when going r/o -> r/w, and is only present to serialize updates.
In order to take this lock, a read hold must first be taken on
mnt_unmounting, and the two need to be held across the operation.

One effect of this change: previously if an unmount failed, we would make a
half hearted attempt to back out of it gracefully, but that was unlikely to
work in a lot of cases. Now while an unmount that will be aborted is in
progress, new file operations within the mount will fail instead of being
delayed. That is unlikely to be a problem though, because if the admin
requests unmount of a file system then s(he) has made a decision to deny
access to the resource.
 1.60 03-May-2008  ad Convert cd9660 to attach as a module.
 1.59 30-Apr-2008  ad PR kern/38135 vfs_busy/vfs_trybusy confusion

The previous fix worked, but it opened a window where mounts could have
disappeared from mountlist while the caller was traversing it using
vfs_trybusy(). Fix that.
 1.58 29-Apr-2008  ad PR kern/38057 ffs makes assuptions about devvp file system
PR kern/33406 softdeps get stuck in endless loop

Introduce VFS_FSYNC() and call it when syncing a block device, if it
has a mounted file system.
 1.57 27-Feb-2008  matt branches: 1.57.2; 1.57.4;
Convert to ansi definitions from old-style definitons.
 1.56 30-Jan-2008  ad branches: 1.56.2; 1.56.6;
PR kern/37706 (forced unmount of file systems is unsafe):

- Do reference counting for 'struct mount'. Each vnode associated with a
mount takes a reference, and in turn the mount takes a reference to the
vfsops.
- Now that mounts are reference counted, replace the overcomplicated mount
locking inherited from 4.4BSD with a recursable rwlock.
 1.55 28-Jan-2008  dholland Fix some race conditions in rename.
Introduce a per-FS rename lock and new vfsops to manipulate it.
Get this lock while renaming. Also add another relookup() in do_sys_rename,
which is a hack to kludge around some of the worst deficiencies of
ufs_rename.
reviewed-by: pooka (and an earlier rev by ad)
posted on tech-kern with no objections.
 1.54 24-Jan-2008  ad specfs changes for PR kern/37717 (raidclose() is no longer called on
shutdown). There are still problems with device access and a PR will be
filed.

- Kill checkalias(). Allow multiple vnodes to reference a single device.

- Don't play dangerous tricks with block vnodes to ensure that only one
vnode can describe a block device. Instead, prohibit concurrent opens of
block devices. As a bonus remove the unreliable code that prevents
multiple file system mounts on the same device. It's no longer needed.

- Track opens by vnode and by device. Issue cdev_close() when the last open
goes away, instead of abusing vnode::v_usecount to tell if the device is
open.
 1.53 02-Jan-2008  ad Merge vmlocking2 to head.
 1.52 08-Dec-2007  pooka branches: 1.52.4;
Remove cn_lwp from struct componentname. curlwp should be used
from on. The NDINIT() macro no longer takes the lwp parameter and
associates the credentials of the calling thread with the namei
structure.
 1.51 08-Dec-2007  ad Merge locking changes + fixes from the vmlocking branch.
 1.50 26-Nov-2007  pooka branches: 1.50.2;
Remove the "struct lwp *" argument from all VFS and VOP interfaces.
The general trend is to remove it from all kernel interfaces and
this is a start. In case the calling lwp is desired, curlwp should
be used.

quick consensus on tech-kern
 1.49 10-Oct-2007  ad branches: 1.49.4;
Merge from vmlocking:

- Split vnode::v_flag into three fields, depending on field locking.
- simple_lock -> kmutex in a few places.
- Fix some simple locking problems.
 1.48 08-Oct-2007  ad Merge brelse() changes from the vmlocking branch.
 1.47 31-Jul-2007  pooka branches: 1.47.2; 1.47.4; 1.47.6; 1.47.8;
* nuke the nameidata parameter from VFS_MOUNT(). Nobody on tech-kern
knew what it was supposed to be used for and wrstuden gave a go-ahead
* while rototilling, convert file systems which went easily to
use VFS_PROTOS() instead of manually prototyping the methods
 1.46 26-Jul-2007  pooka Use eopnotsupp() instead of vfs_stdsuspendctl() and retire the latter.
 1.45 23-Jul-2007  pooka Initialize size and/or writesize when creating a vnode.
 1.44 17-Jul-2007  pooka branches: 1.44.2;
Make set_statvfs_info() take a parameter for the vfs name instead
of always retrieving it from mp->mnt_op->vfs_name

christos ok
 1.43 12-Jul-2007  dsl Change the VFS_MOUNT() interface so that the 'data' buffer passed to the
fs code is a kernel buffer, pass though the length of the buffer as well.
Since the length of the userspace buffer isn'it (yet) passed through the mount
system call, add a field to the vfsops structure containing the default length.
Split sys_mount() for calls from compat code.
Ride one of the recent kernel version changes - old fs LKMs will load, but
sys_mount() will reject any attempt to use them.
 1.42 09-Jul-2007  pooka mntflushbuf() cargo cult comment mania cleanup. there is no mntflushbuf().
 1.41 30-Jun-2007  pooka Using POOL_INIT here makes no sense, since file systems always have
an init method. So get rid of it and #ifdef _LKM and just always
init in the init method. Give malloc types the same treatment.
Makes file systems nicer to work with in linksetless environments
and fixes a few LKM discrepancies.
 1.40 04-Mar-2007  christos branches: 1.40.2; 1.40.4; 1.40.6;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.39 19-Jan-2007  hannken branches: 1.39.2;
New file system suspension API to replace vn_start_write and vn_finished_write.
The suspension helpers are now put into file system specific operations.
This means every file system not supporting these helpers cannot be suspended
and therefore snapshots are no longer possible.

Implemented for file systems of type ffs.

The new API is enabled on a kernel option NEWVNGATE. This option is
not enabled by default in any kernel config.

Presented and discussed on tech-kern with much input from
Bill Studenmund <wrstuden@netbsd.org> and YAMAMOTO Takashi <yamt@netbsd.org>.

Welcome to 4.99.9 (new vfs op vfs_suspendctl).
 1.38 16-Nov-2006  christos __unused removal on arguments; approved by core.
 1.37 24-Oct-2006  drochner minor fix to error handling (from OpenBSD, rev.1.40):
only set devvp->v_specmountpoint on successful mounts
 1.36 12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.35 28-Aug-2006  christos branches: 1.35.2; 1.35.4;
add missing initializers
 1.34 23-Jul-2006  ad Use the LWP cached credentials where sane.
 1.33 13-Jul-2006  martin Fix alignement problems for fhandle_t, exposed by gcc4.1.

While touching all vptofh/fhtovp functions, get rid of VFS_MAXFIDSIZ,
version the getfh(2) syscall and explicitly pass the size available in
the filehandle from userland.

Discussed on tech-kern, with lots of help from yamt (thanks!).
 1.32 14-May-2006  elad branches: 1.32.4;
integrate kauth.
 1.31 21-Feb-2006  thorpej branches: 1.31.2; 1.31.4; 1.31.6;
Use device_class() instead of accessing dv_class directly.
 1.30 11-Dec-2005  christos branches: 1.30.2; 1.30.4; 1.30.6;
merge ktrace-lwp.
 1.29 02-Nov-2005  yamt merge yamt-vop branch. remove following VOPs.

VOP_BLKATOFF
VOP_VALLOC
VOP_BALLOC
VOP_REALLOCBLKS
VOP_VFREE
VOP_TRUNCATE
VOP_UPDATE
 1.28 30-Sep-2005  dyoung branches: 1.28.2;
In cd9660_mount, initialize imp to VFSTOISOFS(mp) instead of NULL.
Remove redundant assignments to imp. This fixes the page fault
panic when the kernel mounts an ISO9660 filesystem, introduced at
revision 1.27.
 1.27 23-Sep-2005  jmmv Apply the NFS exports list rototill patch:

- Remove all NFS related stuff from file system specific code.
- Drop the vfs_checkexp hook and generalize it in the new nfs_check_export
function, thus removing redundancy from all file systems.
- Move all NFS export-related stuff from kern/vfs_subr.c to the new
file sys/nfs/nfs_export.c. The former was becoming large and its code
is always compiled, regardless of the build options. Using the latter,
the code is only compiled in when NFSSERVER is enabled. While doing this,
also make some functions in nfs_subs.c conditional to NFSSERVER.
- Add a new command in nfssvc(2), called NFSSVC_SETEXPORTSLIST, that takes a
path and a set of export entries. At the moment it can only clear the
exports list or append entries, one by one, but it is done in a way that
allows setting the whole set of entries atomically in the future (see the
comment in mountd_set_exports_list or in doc/TODO).
- Change mountd(8) to use the nfssvc(2) system call instead of mount(2) so
that it becomes file system agnostic. In fact, all this whole thing was
done to remove a 'XXX' block from this utility!
- Change the mount*, newfs and fsck* userland utilities to not deal with NFS
exports initialization; done internally by the kernel when initializing
the NFS support for each file system.
- Implement an interface for VFS (called VFS hooks) so that several kernel
subsystems can run arbitrary code upon receipt of specific VFS events.
At the moment, this only provides support for unmount and is used to
destroy NFS exports lists from the file systems being unmounted, though it
has room for extension.

Thanks go to yamt@, chs@, thorpej@, wrstuden@ and others for their comments
and advice in the development of this patch.
 1.26 30-Aug-2005  xtraeme Remove __P()
 1.25 05-Aug-2005  jmmv Fix comment regarding sbp->f_favail (which was a duplicate due to a pasto).
 1.24 28-Jun-2005  yamt branches: 1.24.2;
- constify genfs_ops.
- use member designators.
 1.23 29-Mar-2005  thorpej - Define a VFS_ATTACH() macro that places a reference to a vfsops structure
into the "vfsops" link set.
- Use VFS_ATTACH() where vfsops are declared for individual file systems.
- In vfsinit(), traverse the "vfsops" link set, rather than vfs_list_initial[].
 1.22 26-Feb-2005  perry branches: 1.22.2;
nuke trailing whitespace
 1.21 09-Jan-2005  mycroft branches: 1.21.2; 1.21.4;
Rework the mountroot interface so that vfs_mountroot() opens the root device
and just passes it on to the file system functions. This avoids opening and
closing the device several times.

Mentioned on tech-kern some time ago, IIRC. I've been running this for a
long time.
 1.20 02-Jan-2005  thorpej Add the system call and VFS infrastructure for file system extended
attributes.

From FreeBSD.
 1.19 21-Nov-2004  jdolecek when Joliet extension is in use, encode the Joliet Unicode file names
into UTF-8, rather than filtering them to ISO-8859-1 subset

provide vfs.cd9660.utf8_joliet sysctl to switch to the former
iso-8859-1-only handling, default is to UTF-8 encode
 1.18 13-Sep-2004  jdolecek set mp->mnt_stat.f_namemax on filesystem mount for use by statvfs, and use
the value for also pathconf(_PC_NAME_MAX) to keep the two in sync
 1.17 15-Aug-2004  mycroft Fixing age old cruft:
* Rather than using mnt_maxsymlinklen to indicate that a file systems returns
d_type fields(!), add a new internal flag, IMNT_DTYPE.

Add 3 new elements to ufsmount:
* um_maxsymlinklen, replaces mnt_maxsymlinklen (which never should have existed
in the first place).
* um_dirblksiz, which tracks the current directory block size, eliminating the
FS-specific checks littered throughout the code. This may be used later to
make the block size variable.
* um_maxfilesize, which is the maximum file size, possibly adjusted lower due
to implementation issues.

Sync some bug fixes from FFS into ext2fs, particularly:
* ffs_lookup.c 1.21, 1.28, 1.33, 1.48
* ffs_inode.c 1.43, 1.44, 1.45, 1.66, 1.67
* ffs_vnops.c 1.84, 1.85, 1.86

Clean up some crappy pointer frobnication.
 1.16 05-Jul-2004  pk Call inittodr() from main(). Let file system code set the recorded `last
update' time (if any) through the new function setrootfstime().
 1.15 25-May-2004  hannken 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>
 1.14 25-May-2004  atatat Sysctl descriptions under vfs subtree
 1.13 27-Apr-2004  jrf First pass for some caddr_t removal and changes to get rid of it where we
no longer use and/or need it

- removed casts from unionfs, deadfs and fdesc
(there are more to hunt down still)
- changed vfs_quotactl args argumet from caddr_t to void *
- changed vfs_quotactl structures/callers to reflect the api change

Compiled fine and ran for about a day. Approved/reviewed by
christos@netbsd.org and gimpy@netbsd.org.
 1.12 21-Apr-2004  christos Replace the statfs() family of system calls with statvfs().
Retain binary compatibility.
 1.11 24-Mar-2004  atatat branches: 1.11.2;
Tango on sysctl_createv() and flags. The flags have all been renamed,
and sysctl_createv() now uses more arguments.
 1.10 04-Dec-2003  atatat Dynamic sysctl.

Gone are the old kern_sysctl(), cpu_sysctl(), hw_sysctl(),
vfs_sysctl(), etc, routines, along with sysctl_int() et al. Now all
nodes are registered with the tree, and nodes can be added (or
removed) easily, and I/O to and from the tree is handled generically.

Since the nodes are registered with the tree, the mapping from name to
number (and back again) can now be discovered, instead of having to be
hard coded. Adding new nodes to the tree is likewise much simpler --
the new infrastructure handles almost all the work for simple types,
and just about anything else can be done with a small helper function.

All existing nodes are where they were before (numerically speaking),
so all existing consumers of sysctl information should notice no
difference.

PS - I'm sorry, but there's a distinct lack of documentation at the
moment. I'm working on sysctl(3/8/9) right now, and I promise to
watch out for buses.
 1.9 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.8 29-Jun-2003  fvdl branches: 1.8.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
 1.7 29-Jun-2003  thorpej Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget(). Turns out
that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
just to appease the above.
 1.6 28-Jun-2003  darrenr Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V
 1.5 16-Apr-2003  christos PR/1796: John Kohl: statfs misbehaves under chrooted environments.

- Under chroot it displays only the visible filesystems with appropriate paths.
- The statfs f_mntonname gets adjusted to contain the real path from root.
- While was there, fixed a bug in ext2fs, locking problems with vfs_getfsstat(),
and factored out some of the vfsop statfs() code to copy_statfs_info(). This
fixes the problem where some filesystems forgot to set fsid.
- Made coda look more like a normal fs.
 1.4 03-Apr-2003  christos Avoid stupid printfs during mountroot attempt.
 1.3 21-Mar-2003  dsl Use 'void *' instead of 'caddr_t' in prototypes of VOP_IOCTL, VOP_FCNTL
and VOP_ADVLOCK, delete casts from callers (and some to copyin/out).
 1.2 01-Feb-2003  thorpej Add extensible malloc types, adapted from FreeBSD. This turns
malloc types into a structure, a pointer to which is passed around,
instead of an int constant. Allow the limit to be adjusted when the
malloc type is defined, or with a function call, as suggested by
Jonathan Stone.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_vfsops.c was added on branch nathanw_sa on 2002-12-29 19:55:40 +0000
 1.8.2.11 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.8.2.10 01-Apr-2005  skrll Sync with HEAD.
 1.8.2.9 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.8.2.8 17-Jan-2005  skrll Sync with HEAD.
 1.8.2.7 29-Nov-2004  skrll Sync with HEAD.
 1.8.2.6 21-Sep-2004  skrll Fix the sync with head I botched.
 1.8.2.5 18-Sep-2004  skrll Sync with HEAD.
 1.8.2.4 25-Aug-2004  skrll Sync with HEAD.
 1.8.2.3 24-Aug-2004  skrll Undo part of the ktrace/lwp changes. In particular:
* Remove the "lwp *" argument that was added to vget(). Turns out
that nothing actually used it!
* Remove the "lwp *" arguments that were added to VFS_ROOT(), VFS_VGET(),
and VFS_FHTOVP(); all they did was pass it to vget() (which, as noted
above, didn't use it).
* Remove all of the "lwp *" arguments to internal functions that were added
just to appease the above.
 1.8.2.2 03-Aug-2004  skrll Sync with HEAD
 1.8.2.1 02-Jul-2003  darrenr Apply the aborted ktrace-lwp changes to a specific branch. This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it. This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.
 1.11.2.1 29-May-2004  tron Pull up revision 1.14 (requested by atatat in ticket #393):
Sysctl descriptions under vfs subtree
 1.21.4.1 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.21.2.1 29-Apr-2005  kent sync with -current
 1.22.2.1 24-Aug-2005  riz Pull up following revision(s) (requested by yamt in ticket #688):
sys/miscfs/genfs/genfs_vnops.c: revision 1.98 via patch
sys/ufs/ffs/ffs_vfsops.c: revision 1.165
sys/ufs/lfs/lfs_extern.h: revision 1.69
sys/fs/filecorefs/filecore_vfsops.c: revision 1.20
sys/nfs/nfs_node.c: revision 1.80
sys/fs/smbfs/smbfs_node.c: revision 1.24
sys/fs/cd9660/cd9660_vfsops.c: revision 1.24
sys/fs/msdosfs/msdosfs_denode.c: revision 1.8
sys/miscfs/genfs/genfs_node.h: revision 1.6
sys/ufs/lfs/lfs_vfsops.c: revision 1.183
sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.86
sys/fs/adosfs/advfsops.c: revision 1.23
sys/fs/ntfs/ntfs_vfsops.c: revision 1.31
- constify genfs_ops.
- use member designators.

sys/miscfs/genfs/genfs_vnops.c: revision 1.99 via patch
genfs_getpages: don't forget to put the vnode onto the syncer's work que
ue
even in the case of PGO_LOCKED.

sys/uvm/uvm_bio.c: revision 1.40
sys/uvm/uvm_pager.h: revision 1.29
sys/miscfs/genfs/genfs_vnops.c: revision 1.100 via patch
sys/ufs/ufs/ufs_inode.c: revision 1.50
- introduce PGO_NOBLOCKALLOC and use it for ubc mapping
to prevent unnecessary block allocations in the case that
page size > block size.
- ufs_balloc_range: use VM_PROT_WRITE+PGO_NOBLOCKALLOC rather than
VM_PROT_READ.

sys/uvm/uvm_fault.c: revision 1.96
sys/miscfs/genfs/genfs_vnops.c: revision 1.101 via patch
sys/uvm/uvm_object.h: revision 1.19
sys/miscfs/genfs/genfs_node.h: revision 1.7
ensure that vnodes with dirty pages are always on syncer's queue.
- genfs_putpages: wait for i/o completion of PG_RELEASED/PG_PAGEOUT pages by
setting "wasclean" false when encountering them.
suggested by Stephan Uphoff in PR/24596 (1).
- genfs_putpages: write protect pages when cleaning out, if
we're going to take the vnode off the syncer's queue.
uvm_fault: don't write-map pages unless its vnode is already on
the syncer's queue.
fix PR/24596 (3) but in the different way from the suggested fix.
(to keep our current behaviour, ie. not to require explicit msync.
discussed on tech-kern@.)
- genfs_putpages: don't mistakenly take a vnode off the queue
by introducing a generation number in genfs_node.
genfs_getpages: increment the generation number.
suggested by Stephan Uphoff in PR/24596 (2).
- add some assertions.

sys/miscfs/genfs/genfs_vnops.c: revision 1.102 via patch
genfs_putpages: don't bother to clean the vnode unless VONWORKLST.

sys/ufs/ffs/ffs_vnops.c: revision 1.71
ffs_full_fsync: because VBLK/VCHR can be mmap'ed,
do VOP_PUTPAGES for them as well.

sys/uvm/uvm_fault.c: revision 1.97
uvm_fault: check a correct object in the case of layered filesystems.
fix PR/30811 from Jukka Salmi.

sys/uvm/uvm_object.h: revision 1.20
sys/ufs/ffs/ffs_vfsops.c: revision 1.167
sys/uvm/uvm_bio.c: revision 1.41
sys/ufs/ufs/ufs_vnops.c: revision 1.129
sys/uvm/uvm_mmap.c: revision 1.92
sys/uvm/uvm_fault.c: revision 1.98
sys/kern/vfs_subr.c: revision 1.252
sys/fs/msdosfs/denode.h: revision 1.5
sys/miscfs/genfs/genfs_vnops.c: revision 1.103 via patch
sys/fs/msdosfs/msdosfs_denode.c: revision 1.9
sys/sys/vnode.h: revision 1.141
sys/ufs/ufs/ufs_inode.c: revision 1.51
sys/ufs/ufs/ufs_extern.h: revision 1.45 via patch
sys/miscfs/genfs/genfs_node.h: revision 1.8
sys/ufs/lfs/lfs_vfsops.c: revision 1.184
sys/uvm/uvm_pager.h: revision 1.30
sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.87
update file timestamps for nfsd loaned-read and mmap.
PR/25279. discussed on tech-kern@.

sys/miscfs/genfs/genfs_vnops.c: revision 1.104 via patch
don't write-protect wired pages. pointed by Chuck Silvers.
for now, leave a vnode on the syncer's queue, as suggested by him.

sys/ufs/ffs/ffs_vnops.c: revision 1.72
revert VCHR part of ffs_vnops.c 1.71.
as VCHR uses the device pager, no point to call VOP_PUTPAGES here.
pointed by Chuck Silvers.
 1.24.2.9 17-Mar-2008  yamt sync with head.
 1.24.2.8 04-Feb-2008  yamt sync with head.
 1.24.2.7 21-Jan-2008  yamt sync with head
 1.24.2.6 07-Dec-2007  yamt sync with head
 1.24.2.5 27-Oct-2007  yamt sync with head.
 1.24.2.4 03-Sep-2007  yamt sync with head.
 1.24.2.3 26-Feb-2007  yamt sync with head.
 1.24.2.2 30-Dec-2006  yamt sync with head.
 1.24.2.1 21-Jun-2006  yamt sync with head.
 1.28.2.1 20-Oct-2005  yamt adapt cd9660.
 1.30.6.2 01-Jun-2006  kardel Sync with head.
 1.30.6.1 22-Apr-2006  simonb Sync with head.
 1.30.4.1 09-Sep-2006  rpaulo sync with head
 1.30.2.1 01-Mar-2006  yamt sync with head.
 1.31.6.1 24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.31.4.3 06-May-2006  christos - Move kauth_cred_t declaration to <sys/types.h>
- Cleanup struct ucred; forward declarations that are unused.
- Don't include <sys/kauth.h> in any header, but include it in the c files
that need it.

Approved by core.
 1.31.4.2 10-Mar-2006  elad generic_authorize() -> kauth_authorize_generic().
 1.31.4.1 08-Mar-2006  elad Adapt to kernel authorization KPI.
 1.31.2.3 03-Sep-2006  yamt sync with head.
 1.31.2.2 11-Aug-2006  yamt sync with head
 1.31.2.1 24-May-2006  yamt sync with head.
 1.32.4.1 13-Jul-2006  gdamore Merge from HEAD.
 1.35.4.2 10-Dec-2006  yamt sync with head.
 1.35.4.1 22-Oct-2006  yamt sync with head
 1.35.2.2 01-Feb-2007  ad Sync with head.
 1.35.2.1 18-Nov-2006  ad Sync with head.
 1.39.2.1 12-Mar-2007  rmind Sync with HEAD.
 1.40.6.1 09-Dec-2007  reinoud Pullup to HEAD
 1.40.4.1 11-Jul-2007  mjf Sync with head.
 1.40.2.10 24-Oct-2007  ad - Kill ISODEVMAP.
- Mark cd9660 MPSAFE.
 1.40.2.9 24-Oct-2007  ad - Fix a race in cd9660_vget().
- simplelock -> mutex.
 1.40.2.8 16-Sep-2007  ad Checkpoint work in progress on the vnode lifecycle and reference counting
stuff. This makes it work properly without kernel_lock and fixes a few
quite old bugs. See vfs_subr.c 1.283.2.17 for details.
 1.40.2.7 24-Aug-2007  ad Sync with buffer cache locking changes. See buf.h/vfs_bio.c for details.
Some minor portions are incomplete and needs to be verified as a whole.
 1.40.2.6 20-Aug-2007  ad Sync with HEAD.
 1.40.2.5 29-Jul-2007  ad Add vfs_destroy() to free mount structures. The specificdata_ref was being
leaked.
 1.40.2.4 15-Jul-2007  ad Sync with head.
 1.40.2.3 17-Jun-2007  ad - Increase the number of thread priorities from 128 to 256. How the space
is set up is to be revisited.
- Implement soft interrupts as kernel threads. A generic implementation
is provided, with hooks for fast-path MD code that can run the interrupt
threads over the top of other threads executing in the kernel.
- Split vnode::v_flag into three fields, depending on how the flag is
locked (by the interlock, by the vnode lock, by the file system).
- Miscellaneous locking fixes and improvements.
 1.40.2.2 13-May-2007  ad - Pass the error number and residual count to biodone(), and let it handle
setting error indicators. Prepare to eliminate B_ERROR.
- Add a flag argument to brelse() to be set into the buf's flags, instead
of doing it directly. Typically used to set B_INVAL.
- Add a "struct cpu_info *" argument to kthread_create(), to be used to
create bound threads. Change "bool mpsafe" to "int flags".
- Allow exit of LWPs in the IDL state when (l != curlwp).
- More locking fixes & conversion to the new API.
 1.40.2.1 13-Mar-2007  ad Pull in the initial set of changes for the vmlocking branch.
 1.44.2.1 15-Aug-2007  skrll Sync with HEAD.
 1.47.8.2 31-Jul-2007  pooka * nuke the nameidata parameter from VFS_MOUNT(). Nobody on tech-kern
knew what it was supposed to be used for and wrstuden gave a go-ahead
* while rototilling, convert file systems which went easily to
use VFS_PROTOS() instead of manually prototyping the methods
 1.47.8.1 31-Jul-2007  pooka file cd9660_vfsops.c was added on branch matt-mips64 on 2007-07-31 21:14:18 +0000
 1.47.6.1 14-Oct-2007  yamt sync with head.
 1.47.4.3 23-Mar-2008  matt sync with HEAD
 1.47.4.2 09-Jan-2008  matt sync with HEAD
 1.47.4.1 06-Nov-2007  matt sync with HEAD
 1.47.2.3 09-Dec-2007  jmcneill Sync with HEAD.
 1.47.2.2 27-Nov-2007  joerg Sync with HEAD. amd64 Xen support needs testing.
 1.47.2.1 26-Oct-2007  joerg Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.
 1.49.4.3 18-Feb-2008  mjf Sync with HEAD.
 1.49.4.2 27-Dec-2007  mjf Sync with HEAD.
 1.49.4.1 08-Dec-2007  mjf Sync with HEAD.
 1.50.2.3 26-Dec-2007  ad Sync with head.
 1.50.2.2 08-Dec-2007  ad Sync with head.
 1.50.2.1 04-Dec-2007  ad Pull the vmlocking changes into a new branch.
 1.52.4.1 02-Jan-2008  bouyer Sync with HEAD
 1.56.6.4 17-Jan-2009  mjf Sync with HEAD.
 1.56.6.3 29-Jun-2008  mjf Sync with HEAD.
 1.56.6.2 02-Jun-2008  mjf Sync with HEAD.
 1.56.6.1 03-Apr-2008  mjf Sync with HEAD.
 1.56.2.1 24-Mar-2008  keiichi sync with head.
 1.57.4.5 11-Aug-2010  yamt sync with head.
 1.57.4.4 11-Mar-2010  yamt sync with head
 1.57.4.3 18-Jul-2009  yamt sync with head.
 1.57.4.2 04-May-2009  yamt sync with head.
 1.57.4.1 16-May-2008  yamt sync with head.
 1.57.2.1 18-May-2008  yamt sync with head.
 1.61.2.2 18-Sep-2008  wrstuden Sync with wrstuden-revivesa-base-2.
 1.61.2.1 23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.62.2.1 03-Jul-2008  simonb Sync with head.
 1.63.12.1 21-Apr-2010  matt sync to netbsd-5
 1.63.6.2 25-Apr-2014  sborrill Pull up the following revisions(s) (requested by maxv in ticket #1901):
sys/kern/vfs_syscalls.c: revision 1.478, 1.480 via patch
sys/coda/coda_vfsops.c: revision 1.81
sys/fs/adosfs/advfsops.c: revision 1.70
sys/fs/cd9660/cd9660_vfsops.c: revision 1.84
sys/fs/efs/efs_vfsops.c: revision 1.25
sys/fs/filecorefs/filecore_vfsops.c: revision 1.76
sys/fs/hfs/hfs_vfsops.c: revision 1.31
sys/fs/msdosfs/msdosfs_vfsops.c: revision 1.107
sys/fs/ntfs/ntfs_vfsops.c: revision 1.94
sys/fs/ptyfs/ptyfs_vfsops.c: revision 1.50 via patch
sys/fs/puffs/puffs_vfsops.c: revision 1.110 via patch
sys/fs/smbfs/smbfs_vfsops.c: revision 1.100
sys/fs/sysvbfs/sysvbfs_vfsops.c: revision 1.43
sys/fs/tmpfs/tmpfs_vfsops.c: revision 1.59 via patch
sys/fs/udf/udf_vfsops.c: revision 1.67
sys/fs/union/union_vfsops.c: revision 1.72
sys/fs/unionfs/unionfs_vfsops.c: revision 1.13
sys/kern/vfs_syscalls.c: revision 1.479
sys/miscfs/nullfs/null_vfsops.c: revision 1.88 via patch
sys/miscfs/overlay/overlay_vfsops.c: revision 1.61
sys/miscfs/procfs/procfs_vfsops.c: revision 1.91
sys/miscfs/umapfs/umap_vfsops.c: revision 1.92
sys/nfs/nfs_vfsops.c: revision 1.227
sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.180
sys/ufs/ffs/ffs_vfsops.c: revision 1.297
sys/ufs/lfs/lfs_vfsops.c: revision 1.321
sys/ufs/mfs/mfs_vfsops.c: revision 1.107

Due to missing checks in the mount syscall, and a wrong assumption on the
file systems side, the kernel could allocate an unbounded or zero-sized
memory buffer, and could dereference a NULL pointer when particular
arguments are given by a user.
 1.63.6.1 27-Oct-2009  bouyer branches: 1.63.6.1.2; 1.63.6.1.6;
Pull up following revision(s) (requested by tsutsui in ticket #1115):
sys/fs/cd9660/cd9660_vfsops.c: revision 1.68
Apply a similar fix for mount function from ffs_vfsops.c rev 1.186:
Change cd9660_mount, in MNT_UPDATE case, to check dev_t's for equality
instead of just vnode pointers. Fixes erroneous "Invalid argument"
errors from mount(8) with -u against cd9660 root in the presence of
mfs or tmpfs /dev prepared after initial mountroot.
Tested on QEMU running cobalt Restore CD.
 1.63.6.1.6.1 28-Apr-2014  sborrill Pull up the following revisions(s) (requested by maxv in ticket #1901):
sys/kern/vfs_syscalls.c: revision 1.478, 1.480 via patch
sys/coda/coda_vfsops.c: revision 1.81
sys/fs/adosfs/advfsops.c: revision 1.70
sys/fs/cd9660/cd9660_vfsops.c: revision 1.84
sys/fs/efs/efs_vfsops.c: revision 1.25
sys/fs/filecorefs/filecore_vfsops.c: revision 1.76
sys/fs/hfs/hfs_vfsops.c: revision 1.31
sys/fs/msdosfs/msdosfs_vfsops.c: revision 1.107
sys/fs/ntfs/ntfs_vfsops.c: revision 1.94
sys/fs/ptyfs/ptyfs_vfsops.c: revision 1.50 via patch
sys/fs/puffs/puffs_vfsops.c: revision 1.110 via patch
sys/fs/smbfs/smbfs_vfsops.c: revision 1.100
sys/fs/sysvbfs/sysvbfs_vfsops.c: revision 1.43
sys/fs/tmpfs/tmpfs_vfsops.c: revision 1.59 via patch
sys/fs/udf/udf_vfsops.c: revision 1.67
sys/fs/union/union_vfsops.c: revision 1.72
sys/fs/unionfs/unionfs_vfsops.c: revision 1.13
sys/kern/vfs_syscalls.c: revision 1.479
sys/miscfs/nullfs/null_vfsops.c: revision 1.88 via patch
sys/miscfs/overlay/overlay_vfsops.c: revision 1.61
sys/miscfs/procfs/procfs_vfsops.c: revision 1.91
sys/miscfs/umapfs/umap_vfsops.c: revision 1.92
sys/nfs/nfs_vfsops.c: revision 1.227
sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.180
sys/ufs/ffs/ffs_vfsops.c: revision 1.297
sys/ufs/lfs/lfs_vfsops.c: revision 1.321
sys/ufs/mfs/mfs_vfsops.c: revision 1.107

Due to missing checks in the mount syscall, and a wrong assumption on the
file systems side, the kernel could allocate an unbounded or zero-sized
memory buffer, and could dereference a NULL pointer when particular
arguments are given by a user.
 1.63.6.1.2.1 28-Apr-2014  sborrill Pull up the following revisions(s) (requested by maxv in ticket #1901):
sys/kern/vfs_syscalls.c: revision 1.478, 1.480 via patch
sys/coda/coda_vfsops.c: revision 1.81
sys/fs/adosfs/advfsops.c: revision 1.70
sys/fs/cd9660/cd9660_vfsops.c: revision 1.84
sys/fs/efs/efs_vfsops.c: revision 1.25
sys/fs/filecorefs/filecore_vfsops.c: revision 1.76
sys/fs/hfs/hfs_vfsops.c: revision 1.31
sys/fs/msdosfs/msdosfs_vfsops.c: revision 1.107
sys/fs/ntfs/ntfs_vfsops.c: revision 1.94
sys/fs/ptyfs/ptyfs_vfsops.c: revision 1.50 via patch
sys/fs/puffs/puffs_vfsops.c: revision 1.110 via patch
sys/fs/smbfs/smbfs_vfsops.c: revision 1.100
sys/fs/sysvbfs/sysvbfs_vfsops.c: revision 1.43
sys/fs/tmpfs/tmpfs_vfsops.c: revision 1.59 via patch
sys/fs/udf/udf_vfsops.c: revision 1.67
sys/fs/union/union_vfsops.c: revision 1.72
sys/fs/unionfs/unionfs_vfsops.c: revision 1.13
sys/kern/vfs_syscalls.c: revision 1.479
sys/miscfs/nullfs/null_vfsops.c: revision 1.88 via patch
sys/miscfs/overlay/overlay_vfsops.c: revision 1.61
sys/miscfs/procfs/procfs_vfsops.c: revision 1.91
sys/miscfs/umapfs/umap_vfsops.c: revision 1.92
sys/nfs/nfs_vfsops.c: revision 1.227
sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.180
sys/ufs/ffs/ffs_vfsops.c: revision 1.297
sys/ufs/lfs/lfs_vfsops.c: revision 1.321
sys/ufs/mfs/mfs_vfsops.c: revision 1.107

Due to missing checks in the mount syscall, and a wrong assumption on the
file systems side, the kernel could allocate an unbounded or zero-sized
memory buffer, and could dereference a NULL pointer when particular
arguments are given by a user.
 1.63.4.3 28-Apr-2009  skrll Sync with HEAD.
 1.63.4.2 03-Mar-2009  skrll Sync with HEAD.
 1.63.4.1 19-Jan-2009  skrll Sync with HEAD.
 1.65.2.2 23-Jul-2009  jym Sync with HEAD.
 1.65.2.1 13-May-2009  jym Sync with HEAD.

Commit is split, to avoid a "too many arguments" protocol error.
 1.70.4.2 19-May-2011  rmind Implement sharing of vnode_t::v_interlock amongst vnodes:
- Lock is shared amongst UVM objects using uvm_obj_setlock() or getnewvnode().
- Adjust vnode cache to handle unsharing, add VI_LOCKSHARE flag for that.
- Use sharing in tmpfs and layerfs for underlying object.
- Simplify locking in ubc_fault().
- Sprinkle some asserts.

Discussed with ad@.
 1.70.4.1 03-Jul-2010  rmind sync with head
 1.70.2.1 17-Aug-2010  uebayasi Sync with HEAD.
 1.71.6.1 23-Jun-2011  cherry Catchup with rmind-uvmplock merge.
 1.73.2.3 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")
 1.73.2.2 23-Jan-2013  yamt sync with head
 1.73.2.1 17-Apr-2012  yamt sync with head
 1.74.12.1 21-Apr-2014  bouyer Pull up following revision(s) (requested by maxv in ticket #1050):
sys/ufs/chfs/chfs_vfsops.c: revision 1.11
sys/fs/unionfs/unionfs_vfsops.c: revision 1.13
sys/fs/nilfs/nilfs_vfsops.c: revision 1.16
sys/ufs/mfs/mfs_vfsops.c: revision 1.107
sys/fs/sysvbfs/sysvbfs_vfsops.c: revision 1.43
sys/ufs/ffs/ffs_vfsops.c: revision 1.297
sys/kern/vfs_syscalls.c: revision 1.478
sys/kern/vfs_syscalls.c: revision 1.479
sys/fs/puffs/puffs_vfsops.c: revision 1.110
sys/fs/cd9660/cd9660_vfsops.c: revision 1.84
sys/nfs/nfs_vfsops.c: revision 1.227
sys/fs/v7fs/v7fs_vfsops.c: revision 1.10
sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.180
sys/miscfs/umapfs/umap_vfsops.c: revision 1.92
sys/fs/filecorefs/filecore_vfsops.c: revision 1.76
sys/miscfs/nullfs/null_vfsops.c: revision 1.88
sys/fs/ptyfs/ptyfs_vfsops.c: revision 1.50
sys/coda/coda_vfsops.c: revision 1.81
sys/ufs/lfs/lfs_vfsops.c: revision 1.321
sys/fs/tmpfs/tmpfs_vfsops.c: revision 1.59
sys/fs/hfs/hfs_vfsops.c: revision 1.31
sys/miscfs/overlay/overlay_vfsops.c: revision 1.61
sys/fs/union/union_vfsops.c: revision 1.72
sys/fs/ntfs/ntfs_vfsops.c: revision 1.94
sys/kern/vfs_syscalls.c: revision 1.480
sys/fs/efs/efs_vfsops.c: revision 1.25
sys/kern/vfs_syscalls.c: revision 1.482
sys/fs/msdosfs/msdosfs_vfsops.c: revision 1.107
external/cddl/osnet/dist/uts/common/fs/zfs/zfs_vfsops.c: revision 1.12
sys/miscfs/procfs/procfs_vfsops.c: revision 1.91
sys/fs/smbfs/smbfs_vfsops.c: revision 1.100
sys/fs/adosfs/advfsops.c: revision 1.70
sys/fs/udf/udf_vfsops.c: revision 1.67
Limit check for 'data_len'. Otherwise a (un)privileged user can easily
panic the system by passing a huge size.
ok christos@
An (un)privileged user can easily make the kernel dereference a NULL
pointer.
The kernel allows 'data' to be NULL; it's the fs's responsibility to
ensure that it isn't NULL (if the fs actually needs data).
ok christos@
Some fs's - like kernfs - set their vfs_min_mount_data to zero. Add a check
to prevent an (un)privileged user from requesting a zero-sized allocation
(and thus a panic).
This thing is totally buggy: 'data_len' is modified by the fs, so calling
kmem_free with it while its value has changed since the kmem_alloc is far
from being a good idea.
If the kernel figures out that something mismatches, it will panic
(typically with kernfs).
 1.74.10.1 21-Apr-2014  bouyer Pull up following revision(s) (requested by maxv in ticket #1050):
sys/ufs/chfs/chfs_vfsops.c: revision 1.11
sys/fs/unionfs/unionfs_vfsops.c: revision 1.13
sys/fs/nilfs/nilfs_vfsops.c: revision 1.16
sys/ufs/mfs/mfs_vfsops.c: revision 1.107
sys/fs/sysvbfs/sysvbfs_vfsops.c: revision 1.43
sys/ufs/ffs/ffs_vfsops.c: revision 1.297
sys/kern/vfs_syscalls.c: revision 1.478
sys/kern/vfs_syscalls.c: revision 1.479
sys/fs/puffs/puffs_vfsops.c: revision 1.110
sys/fs/cd9660/cd9660_vfsops.c: revision 1.84
sys/nfs/nfs_vfsops.c: revision 1.227
sys/fs/v7fs/v7fs_vfsops.c: revision 1.10
sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.180
sys/miscfs/umapfs/umap_vfsops.c: revision 1.92
sys/fs/filecorefs/filecore_vfsops.c: revision 1.76
sys/miscfs/nullfs/null_vfsops.c: revision 1.88
sys/fs/ptyfs/ptyfs_vfsops.c: revision 1.50
sys/coda/coda_vfsops.c: revision 1.81
sys/ufs/lfs/lfs_vfsops.c: revision 1.321
sys/fs/tmpfs/tmpfs_vfsops.c: revision 1.59
sys/fs/hfs/hfs_vfsops.c: revision 1.31
sys/miscfs/overlay/overlay_vfsops.c: revision 1.61
sys/fs/union/union_vfsops.c: revision 1.72
sys/fs/ntfs/ntfs_vfsops.c: revision 1.94
sys/kern/vfs_syscalls.c: revision 1.480
sys/fs/efs/efs_vfsops.c: revision 1.25
sys/kern/vfs_syscalls.c: revision 1.482
sys/fs/msdosfs/msdosfs_vfsops.c: revision 1.107
external/cddl/osnet/dist/uts/common/fs/zfs/zfs_vfsops.c: revision 1.12
sys/miscfs/procfs/procfs_vfsops.c: revision 1.91
sys/fs/smbfs/smbfs_vfsops.c: revision 1.100
sys/fs/adosfs/advfsops.c: revision 1.70
sys/fs/udf/udf_vfsops.c: revision 1.67
Limit check for 'data_len'. Otherwise a (un)privileged user can easily
panic the system by passing a huge size.
ok christos@
An (un)privileged user can easily make the kernel dereference a NULL
pointer.
The kernel allows 'data' to be NULL; it's the fs's responsibility to
ensure that it isn't NULL (if the fs actually needs data).
ok christos@
Some fs's - like kernfs - set their vfs_min_mount_data to zero. Add a check
to prevent an (un)privileged user from requesting a zero-sized allocation
(and thus a panic).
This thing is totally buggy: 'data_len' is modified by the fs, so calling
kmem_free with it while its value has changed since the kmem_alloc is far
from being a good idea.
If the kernel figures out that something mismatches, it will panic
(typically with kernfs).
 1.74.6.1 21-Apr-2014  bouyer Pull up following revision(s) (requested by maxv in ticket #1050):
sys/ufs/chfs/chfs_vfsops.c: revision 1.11
sys/fs/unionfs/unionfs_vfsops.c: revision 1.13
sys/fs/nilfs/nilfs_vfsops.c: revision 1.16
sys/ufs/mfs/mfs_vfsops.c: revision 1.107
sys/fs/sysvbfs/sysvbfs_vfsops.c: revision 1.43
sys/ufs/ffs/ffs_vfsops.c: revision 1.297
sys/kern/vfs_syscalls.c: revision 1.478
sys/kern/vfs_syscalls.c: revision 1.479
sys/fs/puffs/puffs_vfsops.c: revision 1.110
sys/fs/cd9660/cd9660_vfsops.c: revision 1.84
sys/nfs/nfs_vfsops.c: revision 1.227
sys/fs/v7fs/v7fs_vfsops.c: revision 1.10
sys/ufs/ext2fs/ext2fs_vfsops.c: revision 1.180
sys/miscfs/umapfs/umap_vfsops.c: revision 1.92
sys/fs/filecorefs/filecore_vfsops.c: revision 1.76
sys/miscfs/nullfs/null_vfsops.c: revision 1.88
sys/fs/ptyfs/ptyfs_vfsops.c: revision 1.50
sys/coda/coda_vfsops.c: revision 1.81
sys/ufs/lfs/lfs_vfsops.c: revision 1.321
sys/fs/tmpfs/tmpfs_vfsops.c: revision 1.59
sys/fs/hfs/hfs_vfsops.c: revision 1.31
sys/miscfs/overlay/overlay_vfsops.c: revision 1.61
sys/fs/union/union_vfsops.c: revision 1.72
sys/fs/ntfs/ntfs_vfsops.c: revision 1.94
sys/kern/vfs_syscalls.c: revision 1.480
sys/fs/efs/efs_vfsops.c: revision 1.25
sys/kern/vfs_syscalls.c: revision 1.482
sys/fs/msdosfs/msdosfs_vfsops.c: revision 1.107
external/cddl/osnet/dist/uts/common/fs/zfs/zfs_vfsops.c: revision 1.12
sys/miscfs/procfs/procfs_vfsops.c: revision 1.91
sys/fs/smbfs/smbfs_vfsops.c: revision 1.100
sys/fs/adosfs/advfsops.c: revision 1.70
sys/fs/udf/udf_vfsops.c: revision 1.67
Limit check for 'data_len'. Otherwise a (un)privileged user can easily
panic the system by passing a huge size.
ok christos@
An (un)privileged user can easily make the kernel dereference a NULL
pointer.
The kernel allows 'data' to be NULL; it's the fs's responsibility to
ensure that it isn't NULL (if the fs actually needs data).
ok christos@
Some fs's - like kernfs - set their vfs_min_mount_data to zero. Add a check
to prevent an (un)privileged user from requesting a zero-sized allocation
(and thus a panic).
This thing is totally buggy: 'data_len' is modified by the fs, so calling
kmem_free with it while its value has changed since the kmem_alloc is far
from being a good idea.
If the kernel figures out that something mismatches, it will panic
(typically with kernfs).
 1.74.4.1 05-Apr-2012  mrg sync to latest -current.
 1.75.2.4 03-Dec-2017  jdolecek update from HEAD
 1.75.2.3 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.75.2.2 23-Jun-2013  tls resync from head
 1.75.2.1 25-Feb-2013  tls resync with head
 1.78.2.1 18-May-2014  rmind sync with head
 1.83.2.1 10-Aug-2014  tls Rebase.
 1.89.4.2 28-Aug-2017  skrll Sync with HEAD
 1.89.4.1 06-Apr-2015  skrll Sync with HEAD
 1.90.4.1 21-Apr-2017  bouyer Sync with HEAD
 1.90.2.4 26-Apr-2017  pgoyette Sync with HEAD
 1.90.2.3 20-Mar-2017  pgoyette Sync with HEAD
 1.90.2.2 23-Jul-2016  pgoyette Be consistent in the ordering of operations.
 1.90.2.1 20-Jul-2016  pgoyette Adapt machine-independant code to the new {b,c}devsw reference-counting
(using localcount(9)). All callers of {b,c}devsw_lookup() now call
{b,c}devsw_lookup_acquire() which retains a reference on the 'struct
{b,c}devsw'. This reference must be released by the caller once it is
finished with the structure's content (or other data that would disappear
if the 'struct {b,c}devsw' were to disappear).
 1.93.18.2 19-Jan-2020  ad Set IMNT_SHRLOOKUP and use it for the in-cache case. Need to check what
more can be done with tmpfs though, it can probably do the whole lookup.
 1.93.18.1 17-Jan-2020  ad Sync with head.
 1.93.12.1 08-Apr-2020  martin Merge changes from current as of 20200406
 1.93.2.1 27-Apr-2017  pgoyette Restore all work from the former pgoyette-localcount branch (which is
now abandoned doe to cvs merge botch).

The branch now builds, and installs via anita. There are still some
problems (cgd is non-functional and all atf tests time-out) but they
will get resolved soon.
 1.104.2.1 02-Aug-2025  perseant Sync with HEAD
 1.63 02-Feb-2024  christos PR/57897: Ricardo Branco: Add support for mount options mask,dirmask,uid,gid
 1.62 27-Mar-2022  christos dedup the eofs link/symlink methods
 1.61 19-Jul-2021  dholland Abolish all the silly indirection macros for initializing vnode ops tables.

These are things of the form #define foofs_op genfs_op, or #define
foofs_op genfs_eopnotsupp, or similar. They serve no purpose besides
obfuscation, and have gotten cutpasted all over everywhere.

Part 2; cvs randomly didn't commit these changes before, and then hid
them from me until I touched the files to force it to rethink. Dunno
what happened.

There's probably more of these, going to have to scan the tree the
hard way.
 1.60 18-Jul-2021  dholland Use macros for the canned parts of device and fifo vnode op tables.

Add GENFS_SPECOP_ENTRIES and GENFS_FIFOOP_ENTRIES macros that contain
the portion of the vnode ops table declaration that is
(conservatively) the same in every fs. Use these in every fs that
supports devices and/or fifos with separate ops tables.

Note that ptyfs works differently (it has one type of vnode with
open-coded dispatch to the specfs code, which I haven't changed in
this commit) and rump/librump/rumpvfs/rumpfs.c has an indirect dynamic
dispatch that already does more or less the same thing, which I also
haven't changed.

Also note that this anticipates a few bits in the next changeset here
and there, and adds missing but unreachable calls in some cases (e.g.
most fses weren't defining whiteout on devices and fifos, but it isn't
reachable there), and it changes parsepath on devices and fifos to
genfs_badop from genfs_parsepath (but it's not reachable there
either).

It appears that devices in kernfs were missing kqfilter, so it's
possible that if you try to use kqueue on /kern/rootdev that it'll
explode.

And finally note that the ops declaration tables aren't
order-dependent. (Other than vop_default_desc has to come first.)
Otherwise this wouldn't work.
 1.59 29-Jun-2021  dholland - Add a new vnode op: VOP_PARSEPATH.
- Move namei_getcomponent to genfs_vnops.c and call it genfs_parsepath.
- Add a parsepath entry to every vnode ops table.

VOP_PARSEPATH takes a directory vnode to be searched and a complete
following path and chooses how much of that path to consume. To begin
with, all parsepath calls are genfs_parsepath, which locates the first
'/' as always.

Note that the call doesn't take the whole struct componentname, only
the string. The other bits of struct componentname should not be
needed and there's no reason to cause potential complications by
exposing them.
 1.58 27-Jun-2020  christos branches: 1.58.6;
Introduce genfs_pathconf() and use it for the default case in all filesystems.
 1.57 16-May-2020  christos Add ACL support for FFS. From FreeBSD.
 1.56 23-Apr-2020  ad PR kern/54759 (vm.ubc_direct deadlock when read()/write() into mapping of itself)

- Add new flag UBC_ISMAPPED which tells ubc_uiomove() the object is mmap()ed
somewhere. Use it to decide whether to do direct-mapped copy, rather than
poking around directly in the vnode in ubc_uiomove(), which is ugly and
doesn't work for tmpfs. It would be nicer to contain all this in UVM but
the filesystem provides the needed locking here (VV_MAPPED) and to
reinvent that would suck more.

- Rename UBC_UNMAP_FLAG() to UBC_VNODE_FLAGS(). Pass in UBC_ISMAPPED where
appropriate.
 1.55 12-Jul-2019  maxv branches: 1.55.8;
Fix info leak: zero out the buffer, because it is not entirely filled, and
the uninitialized bytes get copied to userland in sys___getdens30(). Remove
unneeded cast while here.
 1.54 12-Mar-2016  christos branches: 1.54.10; 1.54.18;
PR/50951: Unmess this up.
 1.53 11-Mar-2016  christos PR/50951: David Binderman: Fix misplaced parens
 1.52 20-Apr-2015  riastradh Make VOP_LINK return directory still locked and referenced.

Ride 7.99.10 bump.
 1.51 28-Mar-2015  maxv Remove the 'cred' argument from bread(). Remove a now unused var in
ffs_snapshot.c. Update the man page accordingly.

ok hannken@
 1.50 28-Mar-2015  maxv Remove the 'cred' argument from breadn(), and update the man page
accordingly.

ok hannken@
 1.49 25-Jul-2014  dholland branches: 1.49.4;
Add VOP_FALLOCATE and VOP_FDISCARD to every vnode ops table I can
find.

The filesystem ones all call genfs_eopnotsupp - right now I am only
implementing the plumbing and we can implement fallocate and/or
fdiscard for files later.

The device ones call spec_fallocate (which is also genfs_eopnotsupp)
and spec_fdiscard, which dispatches to the device-level op.

The fifo ones all call vn_fifo_bypass, which also ends up being
EOPNOTSUPP.
 1.48 14-Jun-2014  hannken Remove the hints "isodir" and "relocated" from cd9660_vget_internal()
and always reread the directory entry by inumber. For directories
the directory entry is always its "." entry.

Always read directories via the device vnode to prevent buffer cache
inconsistency. Keep i_devvp as a hint for fstat(1) and friends and
always use im_devvp for reads. No need to vref()/vrele() i_devvp.

The additional bread is either cached because cd9660_lookup() just
released the buffer or will be used in the near future when the
directory gets traversed during lookup.

No objections on tech-kern@
 1.47 23-Jan-2014  hannken branches: 1.47.2;
Change vnode operations create, mknod, mkdir and symlink to return
the resulting vnode *vpp unlocked.

Discussed on tech-kern@

Welcome to 6.99.30
 1.46 17-Jan-2014  hannken Change vnode operations create, mknod, mkdir and symlink to keep the
directory node dvp locked on return.

Discussed on tech-kern@

Welcome to 6.99.29
 1.45 23-Jun-2013  dholland branches: 1.45.2;
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
 1.44 19-Jun-2013  dholland blkoff() -> cd9660_blkoff()
blksize() -> cd9660_blksize()
 1.43 18-Mar-2013  plunky C99 section 6.7.2.3 (Tags) Note 3 states that:

A type specifier of the form

enum identifier

without an enumerator list shall only appear after the type it
specifies is complete.

which means that we cannot pass an "enum vtype" argument to
kauth_access_action() without fully specifying the type first.
Unfortunately there is a complicated include file loop which
makes that difficult, so convert this minimal function into a
macro (and capitalize it).

(ok elad@)
 1.42 20-Dec-2012  hannken Change bread() and breadn() to never return a buffer on
error and modify all callers to not brelse() on error.

Welcome to 6.99.16

PR kern/46282 (6.0_BETA crash: msdosfs_bmap -> pcbmap -> bread -> bio_doread)
 1.41 13-Mar-2012  elad branches: 1.41.2;
Replace the remaining KAUTH_GENERIC_ISSUSER authorization calls with
something meaningful. All relevant documentation has been updated or
written.

Most of these changes were brought up in the following messages:

http://mail-index.netbsd.org/tech-kern/2012/01/18/msg012490.html
http://mail-index.netbsd.org/tech-kern/2012/01/19/msg012502.html
http://mail-index.netbsd.org/tech-kern/2012/02/17/msg012728.html

Thanks to christos, manu, njoly, and jmmv for input.

Huge thanks to pgoyette for spinning these changes through some build
cycles and ATF.
 1.40 27-Sep-2011  christos branches: 1.40.2; 1.40.6;
use ISO_MAXNAMLEN instead of NAME_MAX
 1.39 29-Mar-2010  pooka Stop exposing fifofs internals and leave only fifo_vnodeop_p visible.
 1.38 03-Jul-2009  elad branches: 1.38.2; 1.38.4;
Where possible, extract the file-system's access() routine to two internal
functions: the first checking if the operation is possible (regardless of
permissions), the second checking file-system permissions, ACLs, etc.

Mailing list reference:

http://mail-index.netbsd.org/tech-kern/2009/06/21/msg005311.html
 1.37 23-Jun-2009  elad Move the implementation of vaccess() to genfs_can_access(), in line with
the other routines of the same spirit.

Adjust file-system code to use it.

Keep vaccess() for KPI compatibility and to keep element of least
surprise. A "diagnostic" message warning that vaccess() is deprecated will
be printed when it's used (obviously, only in DIAGNOSTIC kernels).

No objections on tech-kern@:

http://mail-index.netbsd.org/tech-kern/2009/06/21/msg005310.html
 1.36 17-Dec-2008  cegger branches: 1.36.2;
kill MALLOC and FREE macros.
 1.35 26-Nov-2008  pooka Rototill all remaining file systems to use ubc_uiomove() instead
of the ubc_alloc() - uiomove() - ubc_release() dance.
 1.34 16-May-2008  hannken branches: 1.34.4; 1.34.6;
Make sure all cached buffers with valid, not yet written data have been
run through copy-on-write. Call fscow_run() with valid data where possible.

The LP_UFSCOW hack is no longer needed to protect ffs_copyonwrite() against
endless recursion.

- Add a flag B_MODIFY to bread(), breada() and breadn(). If set the caller
intends to modify the buffer returned.

- Always run copy-on-write on buffers returned from ffs_balloc().

- Add new function ffs_getblk() that gets a buffer, assigns a new blkno,
may clear the buffer and runs copy-on-write. Process possible errors
from getblk() or fscow_run(). Part of PR kern/38664.

Welcome to 4.99.63

Reviewed by: YAMAMOTO Takashi <yamt@netbsd.org>
 1.33 27-Feb-2008  matt branches: 1.33.2; 1.33.4; 1.33.6;
Convert to ansi definitions from old-style definitons.
 1.32 25-Jan-2008  ad branches: 1.32.2; 1.32.6;
Remove VOP_LEASE. Discussed on tech-kern.
 1.31 08-Dec-2007  ad Merge locking changes + fixes from the vmlocking branch.
 1.30 26-Nov-2007  pooka branches: 1.30.2;
Remove the "struct lwp *" argument from all VFS and VOP interfaces.
The general trend is to remove it from all kernel interfaces and
this is a start. In case the calling lwp is desired, curlwp should
be used.

quick consensus on tech-kern
 1.29 08-Oct-2007  ad branches: 1.29.4;
Merge brelse() changes from the vmlocking branch.
 1.28 29-Jul-2007  rumble branches: 1.28.4; 1.28.6; 1.28.8; 1.28.10;
Use _DIRENT_MINSIZE when determining the number of NFS cookies to allocate,
rather than hard-coding 16.
 1.27 29-Jul-2007  ad It's not a good idea for device drivers to modify b_flags, as they don't
need to understand the locking around that field. Instead of setting
B_ERROR, set b_error instead. b_error is 'owned' by whoever completes
the I/O request.
 1.26 04-Mar-2007  christos branches: 1.26.2; 1.26.6; 1.26.10;
Kill caddr_t; there will be some MI fallout, but it will be fixed shortly.
 1.25 21-Feb-2007  thorpej Replace the Mach-derived boolean_t type with the C99 bool type. A
future commit will replace use of TRUE and FALSE with true and false.
 1.24 16-Nov-2006  christos branches: 1.24.4;
__unused removal on arguments; approved by core.
 1.23 12-Oct-2006  christos - sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386
 1.22 14-May-2006  elad branches: 1.22.8; 1.22.10;
integrate kauth.
 1.21 15-Apr-2006  christos Coverity CID 1197: Add KASSERT before deref.
 1.20 01-Mar-2006  yamt branches: 1.20.2; 1.20.4; 1.20.6;
merge yamt-uio_vmspace branch.

- use vmspace rather than proc or lwp where appropriate.
the latter is more natural to specify an address space.
(and less likely to be abused for random purposes.)
- fix a swdmover race.
 1.19 11-Dec-2005  christos branches: 1.19.2; 1.19.4; 1.19.6;
merge ktrace-lwp.
 1.18 29-Nov-2005  yamt merge yamt-readahead branch.
 1.17 11-Nov-2005  yamt branches: 1.17.2;
- ignore truncation for VCHR/VBLK/VFIFO as it used to be
before yamt-vop merge. PR/32049 from Atsushi Onoe.
- reject setattr which attempts to change size of VLNK/VSOCK.
 1.16 02-Nov-2005  yamt merge yamt-vop branch. remove following VOPs.

VOP_BLKATOFF
VOP_VALLOC
VOP_BALLOC
VOP_REALLOCBLKS
VOP_VFREE
VOP_TRUNCATE
VOP_UPDATE
 1.15 30-Aug-2005  xtraeme branches: 1.15.2;
Remove __P()
 1.14 19-Aug-2005  christos 64 bit inode changes.
 1.13 23-Jun-2005  thorpej branches: 1.13.2;
Remove the last references to M_NAMEI; everything should be using PNBUF_*()
now (for a long time now). Remove M_NAMEI, and bump the kernel version to
3.99.7 to reflect its removal.
 1.12 26-Feb-2005  perry nuke trailing whitespace
 1.11 09-Jan-2005  chs branches: 1.11.2; 1.11.4;
adjust the UBC mapping code to support non-vnode uvm_objects.
this means we can no longer look at the vnode size to determine how many
pages to request in a fault, which is good since for NFS the size can change
out from under us on the server anyway. there's also a new flag UBC_UNMAP
for ubc_release(), so that the file system code can make the decision about
whether to cache mappings for files being used as executables.
 1.10 17-Sep-2004  skrll There's no need to pass a proc value when using UIO_SYSSPACE with
vn_rdwr(9) and uiomove(9).

OK'd by Jason Thorpe
 1.9 04-May-2004  jrf Remove caddr_t inlines. Approved by christos@NetBSD.org.
 1.8 26-Jan-2004  hannken Fix xxx_strategy() to use the vnode arg instead of bp->b_vp.
 1.7 25-Jan-2004  hannken Make VOP_STRATEGY(bp) a real VOP as discussed on tech-kern.

VOP_STRATEGY(bp) is replaced by one of two new functions:

- VOP_STRATEGY(vp, bp) Call the strategy routine of vp for bp.
- DEV_STRATEGY(bp) Call the d_strategy routine of bp->b_dev for bp.

DEV_STRATEGY(bp) is used only for block-to-block device situations.
 1.6 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.5 29-Jun-2003  fvdl branches: 1.5.2;
Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
 1.4 28-Jun-2003  darrenr Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records. The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V
 1.3 07-Jun-2003  reinoud Fix a botch in a boolean expression. Thanks to Martim Husemann for the fix
:)

PR kern/21816: Big DVD's with cd9660 fs (can) crash Alpha can be closed
allready :)
 1.2 16-May-2003  itojun use strlcpy. check size if we are to use namei buffer.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file cd9660_vnops.c was added on branch nathanw_sa on 2002-12-29 19:55:42 +0000
 1.5.2.8 11-Dec-2005  christos Sync with head.
 1.5.2.7 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.5.2.6 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.5.2.5 17-Jan-2005  skrll Sync with HEAD.
 1.5.2.4 21-Sep-2004  skrll Fix the sync with head I botched.
 1.5.2.3 18-Sep-2004  skrll Sync with HEAD.
 1.5.2.2 03-Aug-2004  skrll Sync with HEAD
 1.5.2.1 02-Jul-2003  darrenr Apply the aborted ktrace-lwp changes to a specific branch. This is just for
others to review, I'm concerned that patch fuziness may have resulted in some
errant code being generated but I'll look at that later by comparing the diff
from the base to the branch with the file I attempt to apply to it. This will,
at the very least, put the changes in a better context for others to review
them and attempt to tinker with removing passing of 'struct lwp' through
the kernel.
 1.11.4.1 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.11.2.1 29-Apr-2005  kent sync with -current
 1.13.2.9 17-Mar-2008  yamt sync with head.
 1.13.2.8 04-Feb-2008  yamt sync with head.
 1.13.2.7 21-Jan-2008  yamt sync with head
 1.13.2.6 07-Dec-2007  yamt sync with head
 1.13.2.5 27-Oct-2007  yamt sync with head.
 1.13.2.4 03-Sep-2007  yamt sync with head.
 1.13.2.3 26-Feb-2007  yamt sync with head.
 1.13.2.2 30-Dec-2006  yamt sync with head.
 1.13.2.1 21-Jun-2006  yamt sync with head.
 1.15.2.2 29-Oct-2005  yamt cd9660_setattr: remove extra checks. return EOPNOTSUPP immediately.
suggested by Chuck Silvers.
 1.15.2.1 20-Oct-2005  yamt adapt cd9660.
 1.17.2.4 19-Nov-2005  yamt - as read-ahead context is per-vnode now,
there are less reasons to make VOP_READ call uvm_ra_request explicitly.
move it to pager (uvn_get) so that it can handle accesses via mmap as well.
- pass advice to pager via ubc.
- tweak DPRINTF.

XXX can be disturbed by PGO_LOCKED.

XXX it's controversial where it should be done.
(uvm_fault, uvn_get or genfs_getpages.)
 1.17.2.3 19-Nov-2005  yamt - finish reverting VOP_READ prototype changes.
- remove unused variables.
- fix typos.
some of them are pointed by Juan RP.
 1.17.2.2 18-Nov-2005  yamt - associate read-ahead context to vnode, rather than file.
- revert VOP_READ prototype.
 1.17.2.1 15-Nov-2005  yamt adapt the rest of filesystems which use genfs_getpages.
 1.19.6.2 01-Jun-2006  kardel Sync with head.
 1.19.6.1 22-Apr-2006  simonb Sync with head.
 1.19.4.1 09-Sep-2006  rpaulo sync with head
 1.19.2.1 05-Feb-2006  yamt adapt cd9660.
 1.20.6.1 24-May-2006  tron Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
 1.20.4.3 06-May-2006  christos - Move kauth_cred_t declaration to <sys/types.h>
- Cleanup struct ucred; forward declarations that are unused.
- Don't include <sys/kauth.h> in any header, but include it in the c files
that need it.

Approved by core.
 1.20.4.2 19-Apr-2006  elad sync with head.
 1.20.4.1 08-Mar-2006  elad Adapt to kernel authorization KPI.
 1.20.2.1 24-May-2006  yamt sync with head.
 1.22.10.2 10-Dec-2006  yamt sync with head.
 1.22.10.1 22-Oct-2006  yamt sync with head
 1.22.8.1 18-Nov-2006  ad Sync with head.
 1.24.4.2 12-Mar-2007  rmind Sync with HEAD.
 1.24.4.1 27-Feb-2007  yamt - sync with head.
- move sched_changepri back to kern_synch.c as it doesn't know PPQ anymore.
 1.26.10.1 15-Aug-2007  skrll Sync with HEAD.
 1.26.6.1 09-Dec-2007  reinoud Pullup to HEAD
 1.26.2.5 24-Oct-2007  ad - Kill ISODEVMAP.
- Mark cd9660 MPSAFE.
 1.26.2.4 16-Sep-2007  ad Checkpoint work in progress on the vnode lifecycle and reference counting
stuff. This makes it work properly without kernel_lock and fixes a few
quite old bugs. See vfs_subr.c 1.283.2.17 for details.
 1.26.2.3 20-Aug-2007  ad Sync with HEAD.
 1.26.2.2 19-Aug-2007  ad - Back out the biodone() changes.
- Eliminate B_ERROR (from HEAD).
 1.26.2.1 13-May-2007  ad - Pass the error number and residual count to biodone(), and let it handle
setting error indicators. Prepare to eliminate B_ERROR.
- Add a flag argument to brelse() to be set into the buf's flags, instead
of doing it directly. Typically used to set B_INVAL.
- Add a "struct cpu_info *" argument to kthread_create(), to be used to
create bound threads. Change "bool mpsafe" to "int flags".
- Allow exit of LWPs in the IDL state when (l != curlwp).
- More locking fixes & conversion to the new API.
 1.28.10.2 29-Jul-2007  rumble Use _DIRENT_MINSIZE when determining the number of NFS cookies to allocate,
rather than hard-coding 16.
 1.28.10.1 29-Jul-2007  rumble file cd9660_vnops.c was added on branch matt-mips64 on 2007-07-29 21:17:42 +0000
 1.28.8.1 14-Oct-2007  yamt sync with head.
 1.28.6.3 23-Mar-2008  matt sync with HEAD
 1.28.6.2 09-Jan-2008  matt sync with HEAD
 1.28.6.1 06-Nov-2007  matt sync with HEAD
 1.28.4.3 09-Dec-2007  jmcneill Sync with HEAD.
 1.28.4.2 27-Nov-2007  joerg Sync with HEAD. amd64 Xen support needs testing.
 1.28.4.1 26-Oct-2007  joerg Sync with HEAD.

Follow the merge of pmap.c on i386 and amd64 and move
pmap_init_tmp_pgtbl into arch/x86/x86/pmap.c. Modify the ACPI wakeup
code to restore CR4 before jumping back into kernel space as the large
page option might cover that.
 1.29.4.3 18-Feb-2008  mjf Sync with HEAD.
 1.29.4.2 27-Dec-2007  mjf Sync with HEAD.
 1.29.4.1 08-Dec-2007  mjf Sync with HEAD.
 1.30.2.2 08-Dec-2007  ad Sync with head.
 1.30.2.1 04-Dec-2007  ad Pull the vmlocking changes into a new branch.
 1.32.6.3 17-Jan-2009  mjf Sync with HEAD.
 1.32.6.2 02-Jun-2008  mjf Sync with HEAD.
 1.32.6.1 03-Apr-2008  mjf Sync with HEAD.
 1.32.2.1 24-Mar-2008  keiichi sync with head.
 1.33.6.1 23-Jun-2008  wrstuden Sync w/ -current. 34 merge conflicts to follow.
 1.33.4.3 11-Aug-2010  yamt sync with head.
 1.33.4.2 18-Jul-2009  yamt sync with head.
 1.33.4.1 04-May-2009  yamt sync with head.
 1.33.2.1 18-May-2008  yamt sync with head.
 1.34.6.1 19-Jan-2009  skrll Sync with HEAD.
 1.34.4.1 13-Dec-2008  haad Update haad-dm branch to haad-dm-base2.
 1.36.2.1 23-Jul-2009  jym Sync with HEAD.
 1.38.4.1 30-May-2010  rmind sync with head
 1.38.2.1 30-Apr-2010  uebayasi Sync with HEAD.
 1.40.6.1 05-Apr-2012  mrg sync to latest -current.
 1.40.2.3 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")
 1.40.2.2 23-Jan-2013  yamt sync with head
 1.40.2.1 17-Apr-2012  yamt sync with head
 1.41.2.4 03-Dec-2017  jdolecek update from HEAD
 1.41.2.3 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.41.2.2 23-Jun-2013  tls resync from head
 1.41.2.1 25-Feb-2013  tls resync with head
 1.45.2.1 18-May-2014  rmind sync with head
 1.47.2.1 10-Aug-2014  tls Rebase.
 1.49.4.3 19-Mar-2016  skrll Sync with HEAD
 1.49.4.2 06-Jun-2015  skrll Sync with HEAD
 1.49.4.1 06-Apr-2015  skrll Sync with HEAD
 1.54.18.1 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.54.10.1 04-Aug-2019  martin Pull up following revision(s) (requested by maxv in ticket #1322):

sys/fs/cd9660/cd9660_vnops.c: revision 1.55

Fix info leak: zero out the buffer, because it is not entirely filled, and
the uninitialized bytes get copied to userland in sys___getdens30(). Remove
unneeded cast while here.
 1.55.8.1 25-Apr-2020  bouyer Sync with bouyer-xenpvh-base2 (HEAD)
 1.58.6.1 01-Aug-2021  thorpej Sync with HEAD.
 1.2 11-Oct-2014  uebayasi Define filesystem attributes with vfs dependency.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2; 1.1.152;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.152.1 03-Dec-2017  jdolecek update from HEAD
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file files.cd9660 was added on branch nathanw_sa on 2002-12-29 19:55:42 +0000
 1.10 27-Sep-2011  christos define and use ISO_MAXNAMLEN instead of MAXNAMLEN
 1.9 27-Jan-2007  cbiere * Added missing cast in isonum_712().
* Added const-qualifiers.
* Removed unnecessary duplicate prototypes.
* Use the endian conversion functions from <sys/endian.h>.
 1.8 16-Feb-2006  perry branches: 1.8.14;
Change "inline" back to "__inline" in .h files -- C99 is still too
new, and some apps compile things in C89 mode. C89 keywords stay.

As per core@.
 1.7 24-Dec-2005  perry branches: 1.7.2; 1.7.4; 1.7.6;
Remove leading __ from __(const|inline|signed|volatile) -- it is obsolete.
 1.6 03-Dec-2005  christos - protect userland exported files against multiple inclusion.
- make sure that kernel only files don't compile in userland using #error
- XXX: some kernel only files still get installed.
- XXX: some files used in userland, don't get installed.
 1.5 22-Jun-2005  junyoung branches: 1.5.2;
ANSIfy and de-__P.
 1.4 26-Feb-2005  perry nuke trailing whitespace
 1.3 30-Nov-2004  martin branches: 1.3.4; 1.3.6;
Declare functions with the proper type they return. While there, replace
some strange type names with their C99 equivalent.
This avoids sign extension of 32bit fields (like the file size) on 64bit
archs.
Based on a patch supplied by Olaf 'Rhialto' Seibert in PR kern/28471;
should fix that PR.
 1.2 07-Aug-2003  agc Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2; 1.1.4;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.4.7 11-Dec-2005  christos Sync with head.
 1.1.4.6 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.1.4.5 04-Mar-2005  skrll Sync with HEAD.

Hi Perry!
 1.1.4.4 18-Dec-2004  skrll Sync with HEAD.
 1.1.4.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.1.4.2 18-Sep-2004  skrll Sync with HEAD.
 1.1.4.1 03-Aug-2004  skrll Sync with HEAD
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file iso.h was added on branch nathanw_sa on 2002-12-29 19:55:43 +0000
 1.3.6.1 19-Mar-2005  yamt sync with head. xen and whitespace. xen part is not finished.
 1.3.4.1 29-Apr-2005  kent sync with -current
 1.5.2.2 26-Feb-2007  yamt sync with head.
 1.5.2.1 21-Jun-2006  yamt sync with head.
 1.7.6.1 22-Apr-2006  simonb Sync with head.
 1.7.4.1 09-Sep-2006  rpaulo sync with head
 1.7.2.1 18-Feb-2006  yamt sync with head.
 1.8.14.1 01-Feb-2007  ad Sync with head.
 1.4 03-Dec-2005  christos - protect userland exported files against multiple inclusion.
- make sure that kernel only files don't compile in userland using #error
- XXX: some kernel only files still get installed.
- XXX: some files used in userland, don't get installed.
 1.3 30-Aug-2005  xtraeme Remove __P()
 1.2 07-Aug-2003  agc branches: 1.2.16;
Move UCB-licensed code from 4-clause to 3-clause licence.

Patches provided by Joel Baker in PR 22364, verified by myself.
 1.1 23-Dec-2002  jdolecek branches: 1.1.2; 1.1.4;
move cd9660 filesystem code from sys/isofs/cd9660 to sys/fs/cd9660
 1.1.4.5 11-Dec-2005  christos Sync with head.
 1.1.4.4 10-Nov-2005  skrll Sync with HEAD. Here we go again...
 1.1.4.3 21-Sep-2004  skrll Fix the sync with head I botched.
 1.1.4.2 18-Sep-2004  skrll Sync with HEAD.
 1.1.4.1 03-Aug-2004  skrll Sync with HEAD
 1.1.2.2 29-Dec-2002  thorpej With with HEAD.
 1.1.2.1 23-Dec-2002  thorpej file iso_rrip.h was added on branch nathanw_sa on 2002-12-29 19:55:45 +0000
 1.2.16.1 21-Jun-2006  yamt sync with head.

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