Cross Reference: /src/sys/miscfs/kernfs

History log of /src/sys/miscfs/kernfs
Revision	Date	Author	Comments
1.1	12-Jun-1998	cgd	Rework the way kernel include files are installed. In the new method, as with user-land programs, include files are installed by each directory in the tree that has includes to install. (This allows more flexibility as to what gets installed, makes 'partial installs' easier, and gives us more options as to which machines' includes get installed at any given time.) The old SYS_INCLUDES={symlinks,copies} behaviours are _both_ still supported, though at least one bug in the 'symlinks' case is fixed by this change. Include files can't be build before installation, so directories that have includes as targets (e.g. dev/pci) have to move those targets into a different Makefile.
1.3	05-Jan-1994	mycroft	Clean up deleted files.
1.2	20-May-1993	cgd	header cleanup
1.1	23-Mar-1993	cgd	files which implement the kern filesystem. from Jan-Simon Pendry, pendry@vangogh.cs.berkeley.edu
1.7	26-May-2020	bouyer	Add need-flags for kernfs. Compile Xen kernfs support only if kernfs is compiled in the kernel. Should fix MODULAR build.
1.6	11-Oct-2014	uebayasi	Define filesystem attributes with vfs dependency.
1.5	20-Jul-2014	hannken	Change kernfs from hashlist to vcache.
1.4	03-Mar-2010	pooka	branches: 1.4.20; 1.4.34; You have found a scroll of genocide --More-- What class of monsters do you wish to genocide? --More-- > fs_foo.h Wiped out all fs_foo.h
1.3	11-Dec-2005	christos	branches: 1.3.74; 1.3.96; merge ktrace-lwp.
1.2	08-Sep-2003	itojun	add /kern/ipsecsa and /kern/ipsecsp, which can be inspected by setkey(8). it allows easier access to ipsecsa/sp. it works around problem where setkey -D does not work with large number of ipsec SAs due to socket buffer size.
1.1	16-Apr-2002	thorpej	branches: 1.1.6; 1.1.8; 1.1.14; Cleanup how file system configuration information is declared, grouping related information together, with the file system code itself. This is just low-hanging fruit -- more to come.
1.1.14.3	21-Sep-2004	skrll	Fix the sync with head I botched.
1.1.14.2	18-Sep-2004	skrll	Sync with HEAD.
1.1.14.1	03-Aug-2004	skrll	Sync with HEAD
1.1.8.2	23-Jun-2002	jdolecek	catch up with -current on kqueue branch
1.1.8.1	16-Apr-2002	jdolecek	file files.kernfs was added on branch kqueue on 2002-06-23 17:50:10 +0000
1.1.6.2	20-Jun-2002	nathanw	Catch up to -current.
1.1.6.1	16-Apr-2002	nathanw	file files.kernfs was added on branch nathanw_sa on 2002-06-20 03:47:57 +0000
1.3.96.1	30-Apr-2010	uebayasi	Sync with HEAD.
1.3.74.1	11-Mar-2010	yamt	sync with head
1.4.34.1	10-Aug-2014	tls	Rebase.
1.4.20.2	03-Dec-2017	jdolecek	update from HEAD
1.4.20.1	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.45	27-Jun-2025	andvar	Grammar and spelling fixes, mainly in comments. A few in documentation, logging, test description, and SCSI ASC/ASCQ assignment descriptions.
1.44	07-Apr-2020	jdolecek	branches: 1.44.28; switch KERNFS_ALLOCENTRY() to use kmem_zalloc() instead of malloc()
1.43	04-Feb-2020	riastradh	Use specfs vnops for specnodes in kernfs. While here, don't filter out rootdev and rrootdev merely because they're not cached. Fixes the elusive /kern/rootdev and /kern/rrootdev nodes, which only appeared sometimes when they felt like it, and fixes operations on /kern/rootdev and /kern/rrootdev always returning EOPNOTSUPP. We didn't seem to have a single PR for these issues but the following PRs are all relevant: PR bin/13564 PR kern/38265 PR kern/38778 PR kern/45974 XXX pullup-9, pullup-8, pullup-7, pullup-6, pullup-5, pullup-4, pullup-3, pullup-2, pullup-1.4T...
1.42	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.
1.41	02-Jan-2020	thorpej	branches: 1.41.2; - Eliminate the global "boottime" variable, which was being accessed without any synchronization against changes by e.g. clock_settime(). - Replace with new getbinboottime() / getnanoboottime() / getmicroboottime() functions (naming mirrors that of other time access functions in kern_tc.c). It returns the (maybe-converted) value of timebasebin, which also tracks our estimate of when the system was booted (i.e. the legacy "boottime" was redundant). XXX There needs to be a lockless synchronization mechanism for reading timebasebin, but this is a problem in kern_tc.c that pre-existed these "boottime" changes. At least now the problem is centralized in one location.
1.40	20-Jul-2014	hannken	branches: 1.40.28; 1.40.32; Change kernfs from hashlist to vcache.
1.39	20-Jul-2014	hannken	Remove another KAME IPSEC residue, "struct secasvar" and "struct secpolicy".
1.38	17-Jul-2014	hannken	Finish KAME IPSEC removal: - Remove field kfs_value, it is always zero. Compute the hash from kt_tag. - Remove stray definitions kernfs_revoke_sa and kernfs_revoke_sp. While here, remove kfs_type from allocvp(), it is always kt->kt_tag.
1.37	22-Mar-2012	drochner	branches: 1.37.2; 1.37.12; remove KAME IPSEC, replaced by FAST_IPSEC
1.36	27-Sep-2011	christos	branches: 1.36.2; 1.36.6; define KERNFS_MAXNAMLEN and use it.`
1.35	11-Jan-2009	christos	merge christos-time_t
1.34	01-Aug-2008	apb	branches: 1.34.2; #include <sys/tree.h> to get a definition for SPLAY_ENTRY. Needed by third party code, such as lsof.
1.33	28-Jun-2008	rumble	branches: 1.33.2; Create sysctl entries during module initialisation and destroy them appropriately. Many of these file systems are now ready for modularisation.
1.32	28-Dec-2006	alc	branches: 1.32.40; 1.32.44; 1.32.46; 1.32.48; fix comment (forgotten in rev 1.19): - pfsnode -> kernfs_node - procfs -> kernfs
1.31	23-Jun-2006	christos	branches: 1.31.4; remove useless genop
1.30	23-Jun-2006	bouyer	For internal types call kernfs_default_xread() directly, as no entry in the splay tree has been added for these types. Fix kern/33797 by Geoff C. Wing. While here also fix writes the same way (probably broken for 2 years), and properly implement KERNFS_XREAD. The IPsec code could probably be moved out now, and use kernfs_alloctype().
1.29	23-Jun-2006	bouyer	Backout previous: of course the change "Allow optional /kern regular files to have custom read methods..." works, it's used by Xen.
1.28	23-Jun-2006	christos	PR/33797: Geoff C. Wing: kernfs files are not supplying information Roll back the change: 'Allow optional /kern regular files to have custom read methods...' which does not work.
1.27	14-Mar-2006	bouyer	branches: 1.27.6; Allow optionnal /kern regular files to have custom read methods, the same way writes are handled: Add KERNFS_XREAD and KERNFS_FILEOP_WRITE files operations definitions to kfsfileop, a xread function pointer to kernfs_fileop, rename kernfs_read to kernfs_default_xread and add a kernfs_read calling kernfs_try_fileop(KERNFS_FILEOP_READ). Proposed on tech-kern on Feb 18 2006.
1.26	11-Dec-2005	christos	branches: 1.26.4; 1.26.6; 1.26.8; 1.26.10; merge ktrace-lwp.
1.25	30-Aug-2005	xtraeme	Remove __P()
1.24	20-May-2005	chs	branches: 1.24.2; kernfs does not support mmap(), remove code that pretends that it does.
1.23	20-May-2004	atatat	branches: 1.23.10; 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).
1.22	07-May-2004	cl	Allow additional entries (files, subdirs) in kernfs. Also allow defining additional kfstypes and provide hooks to run arbitrary code for any vnodeop on the additional types.
1.21	07-May-2004	cl	Make lookup and readdir return the same inode number. kernfs_readdir now uses kernfs_allocvp to map from kernfs entry to inode number, kernfs_allocvp is now the only place where entries are mapped to inode numbers. Also make KERNFS_FILENO not return random results for entries not in kern_targets.
1.20	27-Sep-2003	darcy	branches: 1.20.2; Changes as discussed with itojun on tech-kern. I have modified the enums to have KFS or PFS differentiators. Further I have wrapped the enum in procfs in "#ifdef _KERNEL" as it is done in kernfs. To see the discussion go to http://mail-index.NetBSD.org/tech-kern/2003/09/ and look for "Mismatched enums in include files" in the list.
1.19	26-Sep-2003	atatat	Make kernfs peacefully co-exist with procfs.
1.18	08-Sep-2003	itojun	add /kern/ipsecsa and /kern/ipsecsp, which can be inspected by setkey(8). it allows easier access to ipsecsa/sp. it works around problem where setkey -D does not work with large number of ipsec SAs due to socket buffer size.
1.17	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.
1.16	21-Feb-2001	jdolecek	branches: 1.16.24; make some more constant arrays 'const'
1.15	27-Jan-2001	jdolecek	Back previous out, it was right the way it was. Seems like I should attend some basic arithmetic lessons to avoid such mistakes :-/
1.14	27-Jan-2001	jdolecek	fix 'physmem' - the actual value we want is ctob(physmem)
1.13	14-Jul-2000	thorpej	Sprinkle some const.
1.12	01-Mar-1998	fvdl	branches: 1.12.14; 1.12.24; Merge with Lite2 + local changes
1.11	10-May-1997	pk	Move `struct kern_target' definition into kernfs.h
1.10	09-Feb-1996	christos	miscfs prototype changes
1.9	29-Mar-1995	briggs	KERNEL -> _KERNEL
1.8	29-Jun-1994	cgd	New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD'
1.7	15-Jun-1994	mycroft	Minor update from JSP after merging my changes.
1.6	08-Jun-1994	mycroft	Update to 4.4-Lite fs code, with local changes.
1.5	05-Jan-1994	cgd	update with latest kernfs file system from jsp@sequent.com
1.4	28-May-1993	cgd	add some more functionality: a setattr which supports chmod+chown+chgrp, and the various support elsewhere to deal with it.
1.3	27-Mar-1993	cgd	added ".." and support for "rrootdev"
1.2	25-Mar-1993	cgd	changed copyright notice thanks to following statement: Return-Path: jsp@compnews.co.uk Received: from ben.uknet.ac.uk by postgres.Berkeley.EDU (5.61/1.29) id AA25983; Thu, 25 Mar 93 05:37:37 -0800 Received: from fennel.compnews.co.uk by ben.uknet.ac.uk via UKIP with SMTP (PP) id <g.05640-0@ben.uknet.ac.uk>; Thu, 25 Mar 1993 13:37:19 +0000 Received: from sage.compnews.co.uk by fennel.compnews.co.uk; Thu, 25 Mar 93 13:37:08 GMT Message-Id: <28109.9303251337@sage.compnews.co.uk> From: jsp@compnews.co.uk (Jan-Simon Pendry) Date: Thu, 25 Mar 1993 13:37:05 +0100 In-Reply-To: cgd@postgres.berkeley.edu's message as of Mar 25, 5:32am. Phone-Number-1: +44 430 432450 Phone-Number-2: +44 430 432480 x20 Fax-Number: +44 430 432022 X-Mailer: Mail User's Shell (7.2.5 10/14/92) To: cgd@postgres.berkeley.edu Subject: Re: fdesc/kernfs/etc code... You may put this copyright message on the source code: /* * Copyright (c) 1990, 1992 Jan-Simon Pendry * All rights reserved. * * This code is derived from software contributed to Berkeley by * Jan-Simon Pendry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */
1.1	23-Mar-1993	cgd	branches: 1.1.1; files which implement the kern filesystem. from Jan-Simon Pendry, pendry@vangogh.cs.berkeley.edu
1.1.1.2	01-Mar-1998	fvdl	Import 4.4BSD-Lite2
1.1.1.1	01-Mar-1998	fvdl	Import 4.4BSD-Lite for reference
1.12.24.1	14-Jul-2000	thorpej	Update from trunk: Sprinkle some const.
1.12.14.2	12-Mar-2001	bouyer	Sync with HEAD.
1.12.14.1	20-Nov-2000	bouyer	Update thorpej_scsipi to -current as of a month ago
1.16.24.5	10-Nov-2005	skrll	Sync with HEAD. Here we go again...
1.16.24.4	21-Sep-2004	skrll	Fix the sync with head I botched.
1.16.24.3	18-Sep-2004	skrll	Sync with HEAD.
1.16.24.2	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.
1.16.24.1	03-Aug-2004	skrll	Sync with HEAD
1.20.2.4	24-May-2005	riz	Pull up revision 1.24 (requested by chs in ticket #1540): kernfs does not support mmap(), remove code that pretends that it does.
1.20.2.3	23-May-2004	tron	branches: 1.20.2.3.2; Pull up revision 1.23 (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).
1.20.2.2	15-May-2004	tron	Pull up revision 1.22 (requested by cl in ticket #336): Allow additional entries (files, subdirs) in kernfs. Also allow defining additional kfstypes and provide hooks to run arbitrary code for any vnodeop on the additional types.
1.20.2.1	14-May-2004	jdc	Pull up revision 1.21 (requested by cl in ticket #322). Make lookup and readdir return the same inode number. kernfs_readdir now uses kernfs_allocvp to map from kernfs entry to inode number, kernfs_allocvp is now the only place where entries are mapped to inode numbers. Also make KERNFS_FILENO not return random results for entries not in kern_targets.
1.20.2.3.2.1	24-May-2005	riz	Pull up revision 1.24 (requested by chs in ticket #1540): kernfs does not support mmap(), remove code that pretends that it does.
1.23.10.1	28-May-2005	tron	Pull up revision 1.24 (requested by chs in ticket #329): kernfs does not support mmap(), remove code that pretends that it does.
1.24.2.2	30-Dec-2006	yamt	sync with head.
1.24.2.1	21-Jun-2006	yamt	sync with head.
1.26.10.1	19-Apr-2006	elad	sync with head.
1.26.8.2	26-Jun-2006	yamt	sync with head.
1.26.8.1	01-Apr-2006	yamt	sync with head.
1.26.6.1	22-Apr-2006	simonb	Sync with head.
1.26.4.1	09-Sep-2006	rpaulo	sync with head
1.27.6.1	13-Jul-2006	gdamore	Merge from HEAD.
1.31.4.1	12-Jan-2007	ad	Sync with head.
1.32.48.1	03-Jul-2008	simonb	Sync with head.
1.32.46.1	18-Sep-2008	wrstuden	Sync with wrstuden-revivesa-base-2.
1.32.44.1	04-May-2009	yamt	sync with head.
1.32.40.3	17-Jan-2009	mjf	Sync with HEAD.
1.32.40.2	28-Sep-2008	mjf	Sync with HEAD.
1.32.40.1	29-Jun-2008	mjf	Sync with HEAD.
1.33.2.1	19-Oct-2008	haad	Sync with HEAD.
1.34.2.1	19-Jan-2009	skrll	Sync with HEAD.
1.36.6.1	05-Apr-2012	mrg	sync to latest -current.
1.36.2.1	17-Apr-2012	yamt	sync with head
1.37.12.1	10-Aug-2014	tls	Rebase.
1.37.2.1	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.40.32.1	12-Feb-2020	martin	Pull up following revision(s) (requested by riastradh in ticket #702): sys/miscfs/kernfs/kernfs_vfsops.c: revision 1.98 sys/miscfs/kernfs/kernfs_vnops.c: revision 1.163 sys/miscfs/kernfs/kernfs.h: revision 1.43 Use specfs vnops for specnodes in kernfs. While here, don't filter out rootdev and rrootdev merely because they're not cached. Fixes the elusive /kern/rootdev and /kern/rrootdev nodes, which only appeared sometimes when they felt like it, and fixes operations on /kern/rootdev and /kern/rrootdev always returning EOPNOTSUPP. We didn't seem to have a single PR for these issues but the following PRs are all relevant: PR bin/13564 PR kern/38265 PR kern/38778 PR kern/45974 XXX pullup-9, pullup-8, pullup-7, pullup-6, pullup-5, pullup-4, pullup-3, p= ullup-2, pullup-1.4T...
1.40.28.2	13-Apr-2020	martin	Mostly merge changes from HEAD upto 20200411
1.40.28.1	08-Apr-2020	martin	Merge changes from current as of 20200406
1.41.2.2	29-Feb-2020	ad	Sync with head.
1.41.2.1	17-Jan-2020	ad	Sync with head.
1.44.28.1	02-Aug-2025	perseant	Sync with HEAD
1.29	20-Jul-2014	hannken	Change kernfs from hashlist to vcache.
1.28	17-Jul-2014	hannken	Finish KAME IPSEC removal: - Remove field kfs_value, it is always zero. Compute the hash from kt_tag. - Remove stray definitions kernfs_revoke_sa and kernfs_revoke_sp. While here, remove kfs_type from allocvp(), it is always kt->kt_tag.
1.27	08-Apr-2014	christos	From Ilya Zykov: Unbreak kernfs which was broken by this commit \|Make the spec_node table implementation private to spec_vnops.c. \|To retrieve a spec_node, two new lookup functions (by device or by mount) \|are implemented. Both return a referenced vnode, for an opened block device \|the opened vnode is returned so further diagnostic checks "vp == ... sd_bdevvp" \|will not fire. Otherwise any vnode matching the criteria gets returned. \|No objections on tech-kern. The effect was that ls /kernfs appeared empty in most cases.
1.26	27-Feb-2014	hannken	branches: 1.26.2; 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
1.25	22-Mar-2012	drochner	branches: 1.25.2; 1.25.4; remove KAME IPSEC, replaced by FAST_IPSEC
1.24	12-Jun-2011	rmind	branches: 1.24.2; 1.24.6; 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.
1.23	21-Jul-2010	hannken	branches: 1.23.6; Make holding v_interlock mandatory for callers of vget(). Announced some time ago on tech-kern.
1.22	21-Jul-2010	hannken	Using vfinddev() leads to vnode races as it returns an unreferenced vnode that may disappear before the caller has a chance to reference it. Reference the vnode while the specfs cache is locked. Welcome to 5.99.37. No objections on tech-kern.
1.21	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.
1.20	15-Mar-2009	cegger	branches: 1.20.2; 1.20.4; ansify function definitions
1.19	14-Mar-2009	dsl	Change about 4500 of the K&R function definitions to ANSI ones. There are still about 1600 left, but they have ',' or /* ... */ in the actual variable definitions - which my awk script doesn't handle. There are also many that need () -> (void). (The script does handle misordered arguments.)
1.18	11-Jan-2009	christos	branches: 1.18.2; merge christos-time_t
1.17	17-Dec-2008	cegger	kill MALLOC and FREE macros.
1.16	05-May-2008	ad	branches: 1.16.8; - 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.
1.15	30-Jan-2008	ad	branches: 1.15.6; 1.15.8; 1.15.10; 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.
1.14	02-Jan-2008	ad	Merge vmlocking2 to head.
1.13	10-Oct-2007	ad	branches: 1.13.4; 1.13.6; 1.13.10; 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.
1.12	11-Mar-2007	ad	branches: 1.12.12; 1.12.14; 1.12.16; Remove useless cast.
1.11	27-Feb-2007	ad	branches: 1.11.2; Destroy the hash locks on final unmount.
1.10	15-Feb-2007	ad	branches: 1.10.2; Replace some uses of lockmgr() / simplelocks.
1.9	11-Dec-2005	christos	merge ktrace-lwp.
1.8	30-Aug-2005	xtraeme	Remove __P()
1.7	26-Feb-2005	perry	branches: 1.7.4; nuke trailing whitespace
1.6	07-May-2004	cl	branches: 1.6.2; 1.6.6; 1.6.8; remove code no longer needed since the type/permission information is available in the entry's struct kern_target and every entry has a (possibly shared) struct kern_target now.
1.5	27-Sep-2003	darcy	branches: 1.5.2; Changes as discussed with itojun on tech-kern. I have modified the enums to have KFS or PFS differentiators. Further I have wrapped the enum in procfs in "#ifdef _KERNEL" as it is done in kernfs. To see the discussion go to http://mail-index.NetBSD.org/tech-kern/2003/09/ and look for "Mismatched enums in include files" in the list.
1.4	26-Sep-2003	atatat	Make kernfs peacefully co-exist with procfs.
1.3	10-Sep-2003	itojun	fix permission of /kern/hostname to 0644
1.2	10-Sep-2003	dan	test against kt to get the right node of the given type, from enami@
1.1	08-Sep-2003	itojun	add /kern/ipsecsa and /kern/ipsecsp, which can be inspected by setkey(8). it allows easier access to ipsecsa/sp. it works around problem where setkey -D does not work with large number of ipsec SAs due to socket buffer size.
1.5.2.1	14-May-2004	jdc	Pull up revision 1.6 (requested by cl in ticket #322). remove code no longer needed since the type/permission information is available in the entry's struct kern_target and every entry has a (possibly shared) struct kern_target now.
1.6.8.1	19-Mar-2005	yamt	sync with head. xen and whitespace. xen part is not finished.
1.6.6.1	29-Apr-2005	kent	sync with -current
1.6.2.7	10-Nov-2005	skrll	Sync with HEAD. Here we go again...
1.6.2.6	04-Mar-2005	skrll	Sync with HEAD. Hi Perry!
1.6.2.5	21-Sep-2004	skrll	Fix the sync with head I botched.
1.6.2.4	18-Sep-2004	skrll	Sync with HEAD.
1.6.2.3	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.
1.6.2.2	03-Aug-2004	skrll	Sync with HEAD
1.6.2.1	07-May-2004	skrll	file kernfs_subr.c was added on branch ktrace-lwp on 2004-08-03 10:54:05 +0000
1.7.4.6	04-Feb-2008	yamt	sync with head.
1.7.4.5	21-Jan-2008	yamt	sync with head
1.7.4.4	27-Oct-2007	yamt	sync with head.
1.7.4.3	03-Sep-2007	yamt	sync with head.
1.7.4.2	26-Feb-2007	yamt	sync with head.
1.7.4.1	21-Jun-2006	yamt	sync with head.
1.10.2.1	12-Mar-2007	rmind	Sync with HEAD.
1.11.2.3	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.
1.11.2.2	05-Apr-2007	ad	Compile fixes.
1.11.2.1	13-Mar-2007	ad	Sync with head.
1.12.16.1	14-Oct-2007	yamt	sync with head.
1.12.14.3	23-Mar-2008	matt	sync with HEAD
1.12.14.2	09-Jan-2008	matt	sync with HEAD
1.12.14.1	06-Nov-2007	matt	sync with HEAD
1.12.12.1	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.
1.13.10.1	02-Jan-2008	bouyer	Sync with HEAD
1.13.6.1	04-Dec-2007	ad	Pull the vmlocking changes into a new branch.
1.13.4.1	18-Feb-2008	mjf	Sync with HEAD.
1.15.10.3	11-Aug-2010	yamt	sync with head.
1.15.10.2	04-May-2009	yamt	sync with head.
1.15.10.1	16-May-2008	yamt	sync with head.
1.15.8.1	18-May-2008	yamt	sync with head.
1.15.6.2	17-Jan-2009	mjf	Sync with HEAD.
1.15.6.1	02-Jun-2008	mjf	Sync with HEAD.
1.16.8.2	28-Apr-2009	skrll	Sync with HEAD.
1.16.8.1	19-Jan-2009	skrll	Sync with HEAD.
1.18.2.1	13-May-2009	jym	Sync with HEAD. Commit is split, to avoid a "too many arguments" protocol error.
1.20.4.4	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@.
1.20.4.3	05-Mar-2011	rmind	sync with head
1.20.4.2	03-Jul-2010	rmind	sync with head
1.20.4.1	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.
1.20.2.1	17-Aug-2010	uebayasi	Sync with HEAD.
1.23.6.1	23-Jun-2011	cherry	Catchup with rmind-uvmplock merge.
1.24.6.1	05-Apr-2012	mrg	sync to latest -current.
1.24.2.2	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")
1.24.2.1	17-Apr-2012	yamt	sync with head
1.25.4.1	18-May-2014	rmind	sync with head
1.25.2.1	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.26.2.1	10-Aug-2014	tls	Rebase.
1.101	16-Feb-2025	joe	remove unecessary branches
1.100	07-Apr-2020	jdolecek	branches: 1.100.28; switch to kmem_zalloc() instead of malloc() for struct kernfs_mount
1.99	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.
1.98	04-Feb-2020	riastradh	Use specfs vnops for specnodes in kernfs. While here, don't filter out rootdev and rrootdev merely because they're not cached. Fixes the elusive /kern/rootdev and /kern/rrootdev nodes, which only appeared sometimes when they felt like it, and fixes operations on /kern/rootdev and /kern/rrootdev always returning EOPNOTSUPP. We didn't seem to have a single PR for these issues but the following PRs are all relevant: PR bin/13564 PR kern/38265 PR kern/38778 PR kern/45974 XXX pullup-9, pullup-8, pullup-7, pullup-6, pullup-5, pullup-4, pullup-3, pullup-2, pullup-1.4T...
1.97	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.
1.96	17-Feb-2017	hannken	branches: 1.96.14; 1.96.18; 1.96.20; Add generic genfs_suspendctl() and use it for all file systems. Layered file systems need work.
1.95	20-Jul-2014	hannken	branches: 1.95.4; 1.95.8; 1.95.12; Change kernfs from hashlist to vcache.
1.94	17-Jul-2014	hannken	Finish KAME IPSEC removal: - Remove field kfs_value, it is always zero. Compute the hash from kt_tag. - Remove stray definitions kernfs_revoke_sa and kernfs_revoke_sp. While here, remove kfs_type from allocvp(), it is always kt->kt_tag.
1.93	23-Mar-2014	hannken	branches: 1.93.2; Change all vfsops to use C99 designated initializers. No functional changes intended.
1.92	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.
1.91	27-Sep-2011	christos	branches: 1.91.2; 1.91.12; 1.91.16; define KERNFS_MAXNAMLEN and use it.`
1.90	30-Nov-2009	pooka	Introduce genfs_statvfs() as pretty much a no-info statvfs and convert several pseudo file systems to use it.
1.89	15-Mar-2009	cegger	ansify function definitions
1.88	14-Mar-2009	dsl	Change about 4500 of the K&R function definitions to ANSI ones. There are still about 1600 left, but they have ',' or /* ... */ in the actual variable definitions - which my awk script doesn't handle. There are also many that need () -> (void). (The script does handle misordered arguments.)
1.87	17-Dec-2008	cegger	branches: 1.87.2; kill MALLOC and FREE macros.
1.86	28-Jun-2008	rumble	branches: 1.86.4; Create sysctl entries during module initialisation and destroy them appropriately. Many of these file systems are now ready for modularisation.
1.85	10-May-2008	rumble	branches: 1.85.2; Convert file systems to dynamically attach with the new module interface. Make VFS hooks dynamic while we're here and say farewell to VFS_ATTACH and VFS_HOOKS_ATTACH linksets. As a consequence, most of the file systems can now be loaded as new style modules. Quick sanity check by ad@.
1.84	29-Apr-2008	ad	branches: 1.84.2; 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.
1.83	28-Jan-2008	dholland	branches: 1.83.6; 1.83.8; 1.83.10; 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.
1.82	26-Nov-2007	pooka	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
1.81	31-Jul-2007	pooka	branches: 1.81.2; 1.81.4; 1.81.10; 1.81.12; * 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
1.80	26-Jul-2007	pooka	Use eopnotsupp() instead of vfs_stdsuspendctl() and retire the latter.
1.79	17-Jul-2007	pooka	branches: 1.79.2; Make set_statvfs_info() take a parameter for the vfs name instead of always retrieving it from mp->mnt_op->vfs_name christos ok
1.78	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.
1.77	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.
1.76	19-Jan-2007	hannken	branches: 1.76.6; 1.76.8; 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).
1.75	09-Dec-2006	chs	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().
1.74	16-Nov-2006	christos	branches: 1.74.2; __unused removal on arguments; approved by core.
1.73	12-Oct-2006	christos	- sprinkle __unused on function decls. - fix a couple of unused bugs - no more -Wno-unused for i386
1.72	02-Sep-2006	christos	branches: 1.72.2; 1.72.4; add missing initializers.
1.71	14-May-2006	elad	integrate kauth.
1.70	11-Dec-2005	christos	branches: 1.70.4; 1.70.6; 1.70.8; 1.70.10; 1.70.12; merge ktrace-lwp.
1.69	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.
1.68	30-Aug-2005	xtraeme	Remove __P()
1.67	29-Mar-2005	thorpej	branches: 1.67.2; - 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[].
1.66	02-Jan-2005	thorpej	branches: 1.66.2; Add the system call and VFS infrastructure for file system extended attributes. From FreeBSD.
1.65	13-Sep-2004	jdolecek	set mp->mnt_stat.f_namemax on filesystem mount, for use by statvfs
1.64	29-May-2004	tron	Don't leak memory in VFS_MOUNT() if set_statvfs_info() fails.
1.63	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>
1.62	25-May-2004	atatat	Sysctl descriptions under vfs subtree
1.61	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.
1.60	21-Apr-2004	christos	add sys/dirent.h
1.59	21-Apr-2004	christos	Replace the statfs() family of system calls with statvfs(). Retain binary compatibility.
1.58	24-Mar-2004	atatat	branches: 1.58.2; Tango on sysctl_createv() and flags. The flags have all been renamed, and sysctl_createv() now uses more arguments.
1.57	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.
1.56	27-Sep-2003	darcy	Changes as discussed with itojun on tech-kern. I have modified the enums to have KFS or PFS differentiators. Further I have wrapped the enum in procfs in "#ifdef _KERNEL" as it is done in kernfs. To see the discussion go to http://mail-index.NetBSD.org/tech-kern/2003/09/ and look for "Mismatched enums in include files" in the list.
1.55	26-Sep-2003	atatat	Make kernfs peacefully co-exist with procfs.
1.54	08-Sep-2003	itojun	add /kern/ipsecsa and /kern/ipsecsp, which can be inspected by setkey(8). it allows easier access to ipsecsa/sp. it works around problem where setkey -D does not work with large number of ipsec SAs due to socket buffer size.
1.53	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.
1.52	29-Jun-2003	fvdl	branches: 1.52.2; Back out the lwp/ktrace changes. They contained a lot of colateral damage, and need to be examined and discussed more.
1.51	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.
1.50	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
1.49	22-Apr-2003	christos	fix lkm malloc lossage.
1.48	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.
1.47	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.
1.46	21-Sep-2002	christos	MNT_GETARGS support
1.45	06-Sep-2002	gehenna	Merge the gehenna-devsw branch into the trunk. This merge changes the device switch tables from static array to dynamically generated by config(8). - All device switches is defined as a constant structure in device drivers. - The new grammer ``device-major'' is introduced to ``files''. device-major <prefix> char <num> [block <num>] [<rules>] - All device major numbers must be listed up in port dependent majors.<arch> by using this grammer. - Added the new naming convention. The name of the device switch must be <prefix>_[bc]devsw for auto-generation of device switch tables. - The backward compatibility of loading block/character device switch by LKM framework is broken. This is necessary to convert from block/character device major to device name in runtime and vice versa. - The restriction to assign device major by LKM is completely removed. We don't need to reserve LKM entries for dynamic loading of device switch. - In compile time, device major numbers list is packed into the kernel and the LKM framework will refer it to assign device major number dynamically.
1.44	30-Jul-2002	soren	Die, qaddr_t, die! - mnt_data in struct mount is already effectively a void *, so stop pretending otherwise.
1.43	15-Nov-2001	lukem	branches: 1.43.8; don't need <sys/types.h> when including <sys/param.h>
1.42	10-Nov-2001	lukem	add RCSIDs
1.41	15-Sep-2001	chs	branches: 1.41.2; add a new VFS op, vfs_reinit, which is called when desiredvnodes is adjusted via sysctl. file systems that have hash tables which are sized based on the value of this variable now resize those hash tables using the new value. the max number of FFS softdeps is also recalculated. convert various file systems to use the <sys/queue.h> macros for their hash tables.
1.40	30-May-2001	mrg	branches: 1.40.2; 1.40.4; use _KERNEL_OPT
1.39	04-Feb-2001	mrg	branches: 1.39.2; clean up some KERNFS_DIAGNOSTIC calls.
1.38	22-Jan-2001	jdolecek	make filesystem vnodeop, specop, fifoop and vnodeopv_* arrays const
1.37	10-Jun-2000	assar	make vfs_getnewfsid only take one argument and fetch the name of the filesystem from the supplied mount argument. also make makefstype take a const parameter. update all the callers.
1.36	16-Mar-2000	jdolecek	branches: 1.36.2; Add new VFS op routine - vfs_done and call it on filesystem detach in vfs_detach(). vfs_done may free global filesystem's resources, typically those allocated in respective filesystem's init function. Needed so those filesystems which went in via LKM have a chance to clean after themselves before unloading. This fixes random panics when LKM for filesystem using pools was loaded and unloaded several times. For each leaf filesystem, add appropriate vfs_done routine.
1.35	26-Feb-1999	wrstuden	branches: 1.35.8; 1.35.14; Modify vfsops to seperate vfs_fhtovp() into two routines. vfs_fhtovp() now only handles the file handle to vnode conversion, and a new call, vfs_checkexp(), performs the export verification.
1.34	09-Aug-1998	perry	bzero->memset, bcopy->memcpy, bcmp->memcmp
1.33	05-Jul-1998	jonathan	* defopt COMPAT_{09,10,11,12,13} and COMPAT_NOMID. TODO: revisit interaction between native compat and emul compat usage.
1.32	01-Mar-1998	fvdl	Merge with Lite2 + local changes
1.31	18-Feb-1998	thorpej	Place a pointer to an array of our vnodeopv_desc *'s in our vfsops structure, for use by vfs_attach().
1.30	10-Sep-1997	christos	PR/4098: Alan Barrett: Fix diagnostic printf formatting.
1.29	22-Dec-1996	cgd	branches: 1.29.10; Change the second and third args to struct vfsops' (vfs_mount)() to 'const char ', and 'void ', respectively. The second arg is taken directly from user arguments, and is const there, so must be const in the prototypes and functions. The third arg is also taken directly from user arguments. It doesn't have to be changed, but since it's cleaner to keep the type the same as the user arg's type, and I'm already making the 'const char ' change...
1.28	13-Oct-1996	christos	backout previous kprintf changes
1.27	10-Oct-1996	christos	printf -> kprintf, sprintf -> ksprintf
1.26	22-Apr-1996	christos	remove include of <sys/cpu.h>
1.25	09-Feb-1996	christos	miscfs prototype changes
1.24	18-Jun-1995	cgd	don't assume the f_fsnamelen is nul-truncated or longer than MFSNAMELEN
1.23	09-Mar-1995	mycroft	copy*str() should use size_t.
1.22	08-Mar-1995	cgd	use u_long for copyin*
1.21	18-Jan-1995	mycroft	Clean up the code to frob mnt_stat a (tiny) bit.
1.20	15-Dec-1994	mycroft	Call foo_statfs() from a common place when mounting.
1.19	15-Sep-1994	mycroft	stat the file system at mount time, for `df -n', et al.
1.18	29-Jun-1994	cgd	branches: 1.18.2; New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD'
1.17	15-Jun-1994	mycroft	Minor update from JSP after merging my changes.
1.16	15-Jun-1994	mycroft	Fix a bug in finding the raw root device.
1.15	08-Jun-1994	mycroft	Update to 4.4-Lite fs code, with local changes.
1.14	23-Apr-1994	cgd	make fs types consistent over new kernels. also, some proto foo.
1.13	21-Apr-1994	cgd	Convert mount, vnode, and buf structs to use <sys/queue.h>. Also, some knf and structure frobbing to do along with it.
1.12	14-Apr-1994	cgd	fs types are names now.
1.11	05-Jan-1994	cgd	update with latest kernfs file system from jsp@sequent.com
1.10	20-Dec-1993	cgd	branches: 1.10.2; pull load average and misc changes down from magnum
1.9	18-Dec-1993	mycroft	Canonicalize all #includes.
1.8	23-Aug-1993	cgd	branches: 1.8.2; changes from 0.9-ALPHA2 to 0.9-BETA
1.7	07-Jun-1993	cgd	branches: 1.7.2; give various filesystems their own vnode types
1.6	07-Jun-1993	cgd	give miscfs filesystems their own mount structure malloc type.
1.5	28-May-1993	cgd	add some more functionality: a setattr which supports chmod+chown+chgrp, and the various support elsewhere to deal with it.
1.4	27-Mar-1993	cgd	added cdevvp (after taking it out of vfs_subr.c) because realized that it was only needed here.
1.3	27-Mar-1993	cgd	added ".." and support for "rrootdev"
1.2	25-Mar-1993	cgd	changed copyright notice thanks to following statement: Return-Path: jsp@compnews.co.uk Received: from ben.uknet.ac.uk by postgres.Berkeley.EDU (5.61/1.29) id AA25983; Thu, 25 Mar 93 05:37:37 -0800 Received: from fennel.compnews.co.uk by ben.uknet.ac.uk via UKIP with SMTP (PP) id <g.05640-0@ben.uknet.ac.uk>; Thu, 25 Mar 1993 13:37:19 +0000 Received: from sage.compnews.co.uk by fennel.compnews.co.uk; Thu, 25 Mar 93 13:37:08 GMT Message-Id: <28109.9303251337@sage.compnews.co.uk> From: jsp@compnews.co.uk (Jan-Simon Pendry) Date: Thu, 25 Mar 1993 13:37:05 +0100 In-Reply-To: cgd@postgres.berkeley.edu's message as of Mar 25, 5:32am. Phone-Number-1: +44 430 432450 Phone-Number-2: +44 430 432480 x20 Fax-Number: +44 430 432022 X-Mailer: Mail User's Shell (7.2.5 10/14/92) To: cgd@postgres.berkeley.edu Subject: Re: fdesc/kernfs/etc code... You may put this copyright message on the source code: /* * Copyright (c) 1990, 1992 Jan-Simon Pendry * All rights reserved. * * This code is derived from software contributed to Berkeley by * Jan-Simon Pendry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */
1.1	23-Mar-1993	cgd	branches: 1.1.1; files which implement the kern filesystem. from Jan-Simon Pendry, pendry@vangogh.cs.berkeley.edu
1.1.1.2	01-Mar-1998	fvdl	Import 4.4BSD-Lite2
1.1.1.1	01-Mar-1998	fvdl	Import 4.4BSD-Lite for reference
1.7.2.1	20-Aug-1993	cgd	kill old, badly placed incarnation of cdevvp
1.8.2.3	03-Dec-1993	cgd	don't try to get rootdev at vfs init time. wait until kernfs mount time to do it. this is hackish, but it gets the job done, and is slightly more robust than the previous way it was done...
1.8.2.2	29-Nov-1993	mycroft	Don't crash deferencing a null pointer if the raw root device was not found.
1.8.2.1	14-Nov-1993	mycroft	Canonicalize all #includes.
1.10.2.3	06-Jan-1994	pk	Re-instate EOPNOTSUPP
1.10.2.2	28-Dec-1993	pk	Return ENODEV rather then EOPNOTSUPP for unsupported operations.
1.10.2.1	20-Dec-1993	pk	file kernfs_vfsops.c was added on branch magnum on 1993-12-28 16:21:43 +0000
1.18.2.1	16-Sep-1994	cgd	from trunk, per mycroft
1.29.10.1	16-Sep-1997	thorpej	Update marc-pcmcia branch from trunk.
1.35.14.1	21-Dec-1999	wrstuden	Initial commit of recent changes to make DEV_BSIZE go away. Runs on i386, needs work on other arch's. Main kernel routines should be fine, but a number of the stand programs need help. cd, fd, ccd, wd, and sd have been updated. sd has been tested with non-512 byte block devices. vnd, raidframe, and lfs need work. Non 2**n block support is automatic for LKM's and conditional for kernels on "options NON_PO2_BLOCKS".
1.35.8.2	11-Feb-2001	bouyer	Sync with HEAD.
1.35.8.1	20-Nov-2000	bouyer	Update thorpej_scsipi to -current as of a month ago
1.36.2.1	22-Jun-2000	minoura	Sync w/ netbsd-1-5-base.
1.39.2.7	18-Oct-2002	nathanw	Catch up to -current.
1.39.2.6	17-Sep-2002	nathanw	Catch up to -current.
1.39.2.5	01-Aug-2002	nathanw	Catch up to -current.
1.39.2.4	08-Jan-2002	nathanw	Catch up to -current.
1.39.2.3	14-Nov-2001	nathanw	Catch up to -current.
1.39.2.2	21-Sep-2001	nathanw	Catch up to -current.
1.39.2.1	21-Jun-2001	nathanw	Catch up to -current.
1.40.4.1	01-Oct-2001	fvdl	Catch up with -current.
1.40.2.3	10-Oct-2002	jdolecek	sync kqueue with -current; this includes merge of gehenna-devsw branch, merge of i386 MP branch, and part of autoconf rototil work
1.40.2.2	06-Sep-2002	jdolecek	sync kqueue branch with HEAD
1.40.2.1	10-Jan-2002	thorpej	Sync kqueue branch with -current.
1.41.2.1	12-Nov-2001	thorpej	Sync the thorpej-mips-cache branch with -current.
1.43.8.2	29-Aug-2002	gehenna	catch up with -current.
1.43.8.1	16-May-2002	gehenna	Replace the direct-access to devsw table with calling devsw APIs.
1.52.2.8	10-Nov-2005	skrll	Sync with HEAD. Here we go again...
1.52.2.7	01-Apr-2005	skrll	Sync with HEAD.
1.52.2.6	17-Jan-2005	skrll	Sync with HEAD.
1.52.2.5	21-Sep-2004	skrll	Fix the sync with head I botched.
1.52.2.4	18-Sep-2004	skrll	Sync with HEAD.
1.52.2.3	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.
1.52.2.2	03-Aug-2004	skrll	Sync with HEAD
1.52.2.1	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.
1.58.2.1	29-May-2004	tron	Pull up revision 1.62 (requested by atatat in ticket #393): Sysctl descriptions under vfs subtree
1.66.2.1	29-Apr-2005	kent	sync with -current
1.67.2.6	04-Feb-2008	yamt	sync with head.
1.67.2.5	07-Dec-2007	yamt	sync with head
1.67.2.4	03-Sep-2007	yamt	sync with head.
1.67.2.3	26-Feb-2007	yamt	sync with head.
1.67.2.2	30-Dec-2006	yamt	sync with head.
1.67.2.1	21-Jun-2006	yamt	sync with head.
1.70.12.1	24-May-2006	tron	Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
1.70.10.2	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.
1.70.10.1	08-Mar-2006	elad	Adapt to kernel authorization KPI.
1.70.8.2	03-Sep-2006	yamt	sync with head.
1.70.8.1	24-May-2006	yamt	sync with head.
1.70.6.1	01-Jun-2006	kardel	Sync with head.
1.70.4.1	09-Sep-2006	rpaulo	sync with head
1.72.4.2	10-Dec-2006	yamt	sync with head.
1.72.4.1	22-Oct-2006	yamt	sync with head
1.72.2.3	01-Feb-2007	ad	Sync with head.
1.72.2.2	12-Jan-2007	ad	Sync with head.
1.72.2.1	18-Nov-2006	ad	Sync with head.
1.74.2.1	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%.
1.76.8.1	11-Jul-2007	mjf	Sync with head.
1.76.6.2	20-Aug-2007	ad	Sync with HEAD.
1.76.6.1	15-Jul-2007	ad	Sync with head.
1.79.2.1	15-Aug-2007	skrll	Sync with HEAD.
1.81.12.2	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
1.81.12.1	31-Jul-2007	pooka	file kernfs_vfsops.c was added on branch matt-mips64 on 2007-07-31 21:14:17 +0000
1.81.10.2	18-Feb-2008	mjf	Sync with HEAD.
1.81.10.1	08-Dec-2007	mjf	Sync with HEAD.
1.81.4.2	23-Mar-2008	matt	sync with HEAD
1.81.4.1	09-Jan-2008	matt	sync with HEAD
1.81.2.1	27-Nov-2007	joerg	Sync with HEAD. amd64 Xen support needs testing.
1.83.10.3	11-Mar-2010	yamt	sync with head
1.83.10.2	04-May-2009	yamt	sync with head.
1.83.10.1	16-May-2008	yamt	sync with head.
1.83.8.1	18-May-2008	yamt	sync with head.
1.83.6.3	17-Jan-2009	mjf	Sync with HEAD.
1.83.6.2	29-Jun-2008	mjf	Sync with HEAD.
1.83.6.1	02-Jun-2008	mjf	Sync with HEAD.
1.84.2.2	18-Sep-2008	wrstuden	Sync with wrstuden-revivesa-base-2.
1.84.2.1	23-Jun-2008	wrstuden	Sync w/ -current. 34 merge conflicts to follow.
1.85.2.1	03-Jul-2008	simonb	Sync with head.
1.86.4.2	28-Apr-2009	skrll	Sync with HEAD.
1.86.4.1	19-Jan-2009	skrll	Sync with HEAD.
1.87.2.1	13-May-2009	jym	Sync with HEAD. Commit is split, to avoid a "too many arguments" protocol error.
1.91.16.1	18-May-2014	rmind	sync with head
1.91.12.2	03-Dec-2017	jdolecek	update from HEAD
1.91.12.1	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.91.2.1	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")
1.93.2.1	10-Aug-2014	tls	Rebase.
1.95.12.1	21-Apr-2017	bouyer	Sync with HEAD
1.95.8.1	20-Mar-2017	pgoyette	Sync with HEAD
1.95.4.1	28-Aug-2017	skrll	Sync with HEAD
1.96.20.2	29-Feb-2020	ad	Sync with head.
1.96.20.1	17-Jan-2020	ad	Sync with head.
1.96.18.1	12-Feb-2020	martin	Pull up following revision(s) (requested by riastradh in ticket #702): sys/miscfs/kernfs/kernfs_vfsops.c: revision 1.98 sys/miscfs/kernfs/kernfs_vnops.c: revision 1.163 sys/miscfs/kernfs/kernfs.h: revision 1.43 Use specfs vnops for specnodes in kernfs. While here, don't filter out rootdev and rrootdev merely because they're not cached. Fixes the elusive /kern/rootdev and /kern/rrootdev nodes, which only appeared sometimes when they felt like it, and fixes operations on /kern/rootdev and /kern/rrootdev always returning EOPNOTSUPP. We didn't seem to have a single PR for these issues but the following PRs are all relevant: PR bin/13564 PR kern/38265 PR kern/38778 PR kern/45974 XXX pullup-9, pullup-8, pullup-7, pullup-6, pullup-5, pullup-4, pullup-3, p= ullup-2, pullup-1.4T...
1.96.14.2	13-Apr-2020	martin	Mostly merge changes from HEAD upto 20200411
1.96.14.1	08-Apr-2020	martin	Merge changes from current as of 20200406
1.100.28.1	02-Aug-2025	perseant	Sync with HEAD
1.174	27-Mar-2022	christos	dedup the eofs link/symlink methods
1.173	12-Mar-2022	riastradh	kernfs: Just fail with EOPNOTSUPP, don't panic, on VOP_BMAP. Reported-by: syzbot+870d2eb4b4c8904ac734@syzkaller.appspotmail.com
1.172	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 3; cvs randomly didn't commit all the files the first time, still hunting down the files it skipped.
1.171	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.
1.170	06-Jul-2021	dholland	Fix perms on /kern/{r,}rootdev.
1.169	06-Jul-2021	dholland	Add missing VOP_KQFILTER to kernfs. Not sure if lack of it can be used for local DoS or not, but best to fix.
1.168	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.
1.167	28-Jun-2021	chs	VOP_BMAP() may be called via ioctl(FIOGETBMAP) on any vnode that applications can open. change various pseudo-fs *_bmap methods return an error instead of panic. Reported-by: syzbot+8289a3eaf2ba60958c87@syzkaller.appspotmail.com
1.166	27-Jun-2020	christos	branches: 1.166.6; Introduce genfs_pathconf() and use it for the default case in all filesystems.
1.165	16-May-2020	christos	Add ACL support for FFS. From FreeBSD.
1.164	24-Feb-2020	ad	v_interlock -> vmobjlock
1.163	04-Feb-2020	riastradh	Use specfs vnops for specnodes in kernfs. While here, don't filter out rootdev and rrootdev merely because they're not cached. Fixes the elusive /kern/rootdev and /kern/rrootdev nodes, which only appeared sometimes when they felt like it, and fixes operations on /kern/rootdev and /kern/rrootdev always returning EOPNOTSUPP. We didn't seem to have a single PR for these issues but the following PRs are all relevant: PR bin/13564 PR kern/38265 PR kern/38778 PR kern/45974 XXX pullup-9, pullup-8, pullup-7, pullup-6, pullup-5, pullup-4, pullup-3, pullup-2, pullup-1.4T...
1.162	02-Jan-2020	thorpej	branches: 1.162.2; - Eliminate the global "boottime" variable, which was being accessed without any synchronization against changes by e.g. clock_settime(). - Replace with new getbinboottime() / getnanoboottime() / getmicroboottime() functions (naming mirrors that of other time access functions in kern_tc.c). It returns the (maybe-converted) value of timebasebin, which also tracks our estimate of when the system was booted (i.e. the legacy "boottime" was redundant). XXX There needs to be a lockless synchronization mechanism for reading timebasebin, but this is a problem in kern_tc.c that pre-existed these "boottime" changes. At least now the problem is centralized in one location.
1.161	29-Aug-2019	hannken	Add missing operation VOP_GETPAGES() returning EFAULT. Without this operation posix_fadvise(..., POSIX_FADV_WILLNEED) would leave the v_interlock held. Observed by maxv@
1.160	03-Sep-2018	riastradh	branches: 1.160.4; Rename min/max -> uimin/uimax for better honesty. These functions are defined on unsigned int. The generic name min/max should not silently truncate to 32 bits on 64-bit systems. This is purely a name change -- no functional change intended. HOWEVER! Some subsystems have #define min(a, b) ((a) < (b) ? (a) : (b)) #define max(a, b) ((a) > (b) ? (a) : (b)) even though our standard name for that is MIN/MAX. Although these may invite multiple evaluation bugs, these do _not_ cause integer truncation. To avoid `fixing' these cases, I first changed the name in libkern, and then compile-tested every file where min/max occurred in order to confirm that it failed -- and thus confirm that nothing shadowed min/max -- before changing it. I have left a handful of bootloaders that are too annoying to compile-test, and some dead code: cobalt ews4800mips hp300 hppa ia64 luna68k vax acorn32/if_ie.c (not included in any kernels) macppc/if_gm.c (superseded by gem(4)) It should be easy to fix the fallout once identified -- this way of doing things fails safe, and the goal here, after all, is to _avoid_ silent integer truncations, not introduce them. Maybe one day we can reintroduce min/max as type-generic things that never silently truncate. But we should avoid doing that for a while, so that existing code has a chance to be detected by the compiler for conversion to uimin/uimax without changing the semantics until we can properly audit it all. (Who knows, maybe in some cases integer truncation is actually intended!)
1.159	31-Mar-2018	christos	branches: 1.159.2; factor out some repeated code and simplify the logputchar function.
1.158	26-May-2017	riastradh	branches: 1.158.2; 1.158.8; 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.
1.157	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!
1.156	20-Aug-2016	hannken	branches: 1.156.2; Remove now obsolete operation vcache_remove(). Welcome to 7.99.36
1.155	20-Apr-2015	riastradh	branches: 1.155.2; Make VOP_LINK return directory still locked and referenced. Ride 7.99.10 bump.
1.154	25-Jul-2014	dholland	branches: 1.154.2; 1.154.4; 1.154.6; 1.154.10; 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.
1.153	20-Jul-2014	hannken	Change kernfs from hashlist to vcache.
1.152	17-Jul-2014	hannken	Finish KAME IPSEC removal: - Remove field kfs_value, it is always zero. Compute the hash from kt_tag. - Remove stray definitions kernfs_revoke_sa and kernfs_revoke_sp. While here, remove kfs_type from allocvp(), it is always kt->kt_tag.
1.151	08-Apr-2014	christos	From Ilya Zykov: Unbreak kernfs which was broken by this commit \|Make the spec_node table implementation private to spec_vnops.c. \|To retrieve a spec_node, two new lookup functions (by device or by mount) \|are implemented. Both return a referenced vnode, for an opened block device \|the opened vnode is returned so further diagnostic checks "vp == ... sd_bdevvp" \|will not fire. Otherwise any vnode matching the criteria gets returned. \|No objections on tech-kern. The effect was that ls /kernfs appeared empty in most cases.
1.150	07-Feb-2014	hannken	branches: 1.150.2; 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
1.149	23-Jan-2014	hannken	Change vnode operations create, mknod, mkdir and symlink to return the resulting vnode *vpp unlocked. Discussed on tech-kern@ Welcome to 6.99.30
1.148	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
1.147	18-Mar-2013	plunky	branches: 1.147.6; 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@)
1.146	22-Mar-2012	drochner	branches: 1.146.2; remove KAME IPSEC, replaced by FAST_IPSEC
1.145	13-Mar-2012	elad	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.
1.144	12-Dec-2011	njoly	branches: 1.144.2; Start making fs read(2) fail with EISDIR if the implementation does not allow read on directories (kernfs, rumpfs, ptyfs and sysvbfs). Adjust man page accordingly, and add a small corresponding vfs testcase.
1.143	21-Jul-2010	hannken	branches: 1.143.8; 1.143.12; Using vfinddev() leads to vnode races as it returns an unreferenced vnode that may disappear before the caller has a chance to reference it. Reference the vnode while the specfs cache is locked. Welcome to 5.99.37. No objections on tech-kern.
1.142	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.
1.141	31-Mar-2010	pooka	If msgbuf is not enabled, do not report the node in readdir. That way ls -l won't report funny errors because getattr for a readdir result fails. XXX: lookup for msgbuf still succeeds even if not enabled
1.140	22-Jan-2010	njoly	branches: 1.140.2; 1.140.4; Remove unneeded strlen() call in KFShostname case.
1.139	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
1.138	03-Jul-2009	elad	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
1.137	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
1.136	14-Mar-2009	dsl	Change about 4500 of the K&R function definitions to ANSI ones. There are still about 1600 left, but they have ',' or /* ... */ in the actual variable definitions - which my awk script doesn't handle. There are also many that need () -> (void). (The script does handle misordered arguments.)
1.135	11-Jan-2009	christos	branches: 1.135.2; merge christos-time_t
1.134	02-Jan-2008	ad	branches: 1.134.6; 1.134.8; 1.134.12; 1.134.20; Merge vmlocking2 to head.
1.133	26-Nov-2007	pooka	branches: 1.133.2; 1.133.6; 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
1.132	28-Dec-2006	elad	branches: 1.132.6; 1.132.18; 1.132.20; 1.132.26; Revert bogus NULL check introduced in revision 1.96 that generated false Coverity "bugs".
1.131	28-Dec-2006	alc	revert previous, after inspection `kfs->kfs_kt' could really not be NULL here. reported/requested by elad@
1.130	26-Dec-2006	alc	CID-3855: check if 'kfs->kfs_kt != NULL' before dereferencing it
1.129	09-Dec-2006	chs	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().
1.128	16-Nov-2006	christos	branches: 1.128.2; __unused removal on arguments; approved by core.
1.127	04-Nov-2006	jmmv	Use size_t in a couple of places as it makes more sense WRT the places where the variables are later used. From PR kern/25277 by Jeff Ito.
1.126	12-Oct-2006	christos	- sprinkle __unused on function decls. - fix a couple of unused bugs - no more -Wno-unused for i386
1.125	23-Jun-2006	christos	branches: 1.125.4; 1.125.6; remove useless genop
1.124	23-Jun-2006	bouyer	For internal types call kernfs_default_xread() directly, as no entry in the splay tree has been added for these types. Fix kern/33797 by Geoff C. Wing. While here also fix writes the same way (probably broken for 2 years), and properly implement KERNFS_XREAD. The IPsec code could probably be moved out now, and use kernfs_alloctype().
1.123	23-Jun-2006	bouyer	Backout previous: of course the change "Allow optional /kern regular files to have custom read methods..." works, it's used by Xen.
1.122	23-Jun-2006	christos	PR/33797: Geoff C. Wing: kernfs files are not supplying information Roll back the change: 'Allow optional /kern regular files to have custom read methods...' which does not work.
1.121	07-Jun-2006	kardel	branches: 1.121.2; merge FreeBSD timecounters from branch simonb-timecounters - struct timeval time is gone time.tv_sec -> time_second - struct timeval mono_time is gone mono_time.tv_sec -> time_uptime - access to time via {get,}{micro,nano,bin}time() get* versions are fast but less precise - support NTP nanokernel implementation (NTP API 4) - further reading: Timecounter Paper: http://phk.freebsd.dk/pubs/timecounter.pdf NTP Nanokernel: http://www.eecis.udel.edu/~mills/ntp/html/kern.html
1.120	14-May-2006	elad	branches: 1.120.2; integrate kauth.
1.119	04-Apr-2006	christos	Coverity CID 1087: Clarify NULL test.
1.118	14-Mar-2006	bouyer	branches: 1.118.2; Allow optionnal /kern regular files to have custom read methods, the same way writes are handled: Add KERNFS_XREAD and KERNFS_FILEOP_WRITE files operations definitions to kfsfileop, a xread function pointer to kernfs_fileop, rename kernfs_read to kernfs_default_xread and add a kernfs_read calling kernfs_try_fileop(KERNFS_FILEOP_READ). Proposed on tech-kern on Feb 18 2006.
1.117	01-Mar-2006	yamt	branches: 1.117.2; 1.117.4; 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.
1.116	24-Dec-2005	perry	branches: 1.116.2; 1.116.4; 1.116.6; Remove leading __ from __(const\|inline\|signed\|volatile) -- it is obsolete.
1.115	11-Dec-2005	christos	merge ktrace-lwp.
1.114	23-Nov-2005	christos	Fix 64 bit truncation problem reported by http://www.securitylab.net
1.113	02-Nov-2005	yamt	branches: 1.113.2; merge yamt-vop branch. remove following VOPs. VOP_BLKATOFF VOP_VALLOC VOP_BALLOC VOP_REALLOCBLKS VOP_VFREE VOP_TRUNCATE VOP_UPDATE
1.112	01-Sep-2005	christos	branches: 1.112.2; Also protect the ipsec ioctls from negative offsets to prevent panics in m_copydata(). Pointed out by Karl Janmar. Move the negative offset check from kernfs_xread() to kernfs_read().
1.111	31-Aug-2005	christos	Don't allow negative offsets when reading the message buffer, because it can allow reading arbitrary kernel memory.
1.110	30-Aug-2005	xtraeme	Remove __P()
1.109	29-May-2005	christos	branches: 1.109.2; - sprinkle const - avoid shadowed variables.
1.108	20-May-2005	chs	kernfs does not support mmap(), remove code that pretends that it does.
1.107	26-Feb-2005	perry	branches: 1.107.2; nuke trailing whitespace
1.106	27-Oct-2004	skrll	branches: 1.106.4; 1.106.6; Backout previous.
1.105	27-Oct-2004	skrll	Don't pass &proc0 in the UIO_SYSSPACE case it is not needed.
1.104	13-May-2004	cl	Workaround for gcc 2.95.3 failing to initialize structures and/or unions inside structures using nested designators. Should be reverted when gcc >=3.3.3 is ready for vax.
1.103	12-May-2004	jrf	caddr_t -> void * and removal of some more casts.
1.102	07-May-2004	cl	Allow additional entries (files, subdirs) in kernfs. Also allow defining additional kfstypes and provide hooks to run arbitrary code for any vnodeop on the additional types.
1.101	07-May-2004	cl	Make lookup and readdir return the same inode number. kernfs_readdir now uses kernfs_allocvp to map from kernfs entry to inode number, kernfs_allocvp is now the only place where entries are mapped to inode numbers. Also make KERNFS_FILENO not return random results for entries not in kern_targets.
1.100	07-May-2004	cl	Find the right entry when doing lookup on dotdot in kern/ipsec subdirs. Also remove some duplicate code.
1.99	29-Apr-2004	jrf	Removed remaining caddr_t casts we do not need in miscfs. Recompiled kernel and ran for a day or so. There are still some caddr_t types in the arguments of some calls, I will do those separately (later) as they touch a lot more of the system. Approved by christos@NetBSD.org.
1.98	27-Sep-2003	darcy	branches: 1.98.2; Changes as discussed with itojun on tech-kern. I have modified the enums to have KFS or PFS differentiators. Further I have wrapped the enum in procfs in "#ifdef _KERNEL" as it is done in kernfs. To see the discussion go to http://mail-index.NetBSD.org/tech-kern/2003/09/ and look for "Mismatched enums in include files" in the list.
1.97	26-Sep-2003	atatat	Make kernfs peacefully co-exist with procfs.
1.96	10-Sep-2003	itojun	check before deref kfs_kt
1.95	10-Sep-2003	dan	Make /kern/. have linkcount 2 in non-IPSEC case, 4 in IPSEC case. Thanks to Valeriy E. Ushakov.
1.94	10-Sep-2003	itojun	check if rootdev/rrootdev actually exists.
1.93	10-Sep-2003	simonb	8 spaces is evil, convert to tab.
1.92	10-Sep-2003	dan	Make vnode times on /kern/boottime be the boot time, not "now". Handy because ls(1) helpfully converts the time to human-readable format when printing, and because shell tools like "test -nt" and "find -newer" can be used against it. "Inspired" by a discussion about removing lockfiles older than the last reboot, and Al Crooks' handy observation that a close approximation can be found with /var/run/dmesg.boot While here, notice that a lot of the kernfs structures and naming changed suddenly, and though it seems a clear improvement, there was no mention in commit logs.
1.91	08-Sep-2003	itojun	remove non-precise comment
1.90	08-Sep-2003	itojun	add /kern/ipsecsa and /kern/ipsecsp, which can be inspected by setkey(8). it allows easier access to ipsecsa/sp. it works around problem where setkey -D does not work with large number of ipsec SAs due to socket buffer size.
1.89	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.
1.88	29-Jun-2003	fvdl	branches: 1.88.2; Back out the lwp/ktrace changes. They contained a lot of colateral damage, and need to be examined and discussed more.
1.87	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.
1.86	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
1.85	10-Apr-2003	jdolecek	use former genfs_eopnotsupp_rele() as genfs_eopnotsupp(), so that vnodes are vput()/vrele()d as necessary - some filesystems did use the wrong one for some ops, and it's just safer to not take the chance based on suggestion by Bill Studenmund
1.84	12-Oct-2002	jdolecek	put back the while loop in kernfs_getattr() removed in rev 1.82; it's necessary to get the whole file length e.g. for msgbuf this fixes the '/kern/msgbuf & less' problem reported on port-i386 by Dave Tyson
1.83	03-Aug-2002	simonb	Just use the "time" variable in the *_getattr functions instead of a call to (the potentially expensive) microtime().
1.82	19-Jul-2002	jdolecek	Properly detect error in kernfs_xread(). Fixes kern/10278 by IWAMOTO Toshihiro, though implemented different way. While here, clean up some int vs. size_t confusion, make kernfs_x{read\|write}() static and g/c some #if 0 stuff.
1.81	05-Jul-2002	lukem	be consistent about how va_[acm]time is set to the current time (inspired by how procfs does it)
1.80	05-Jul-2002	lukem	set vap->va_ctime to vap->va_atime (the current time), rather than vap->va_ctime (which is a no-op).
1.79	06-Dec-2001	chs	branches: 1.79.8; 1.79.10; add a VOP_PUTPAGES method for all the filesystems that don't have pages, just unlock the interlock.
1.78	15-Nov-2001	lukem	don't need <sys/types.h> when including <sys/param.h>
1.77	10-Nov-2001	lukem	add RCSIDs
1.76	03-Jun-2001	chs	branches: 1.76.2; 1.76.6; let kernfs_mmap() use the default error method.
1.75	21-Feb-2001	jdolecek	branches: 1.75.2; make some more constant arrays 'const'
1.74	04-Feb-2001	mrg	clean up some KERNFS_DIAGNOSTIC calls.
1.73	27-Jan-2001	jdolecek	Back previous out, it was right the way it was. Seems like I should attend some basic arithmetic lessons to avoid such mistakes :-/
1.72	27-Jan-2001	jdolecek	fix 'physmem' - the actual value we want is ctob(physmem)
1.71	22-Jan-2001	jdolecek	make filesystem vnodeop, specop, fifoop and vnodeopv_* arrays const
1.70	03-Aug-2000	thorpej	MALLOC()/FREE() are not to be used for variable sized allocations.
1.69	14-Jul-2000	thorpej	Sprinkle some const.
1.68	28-Jun-2000	mrg	<vm/vm.h> -> <uvm/uvm_extern.h>
1.67	25-Aug-1999	sommerfeld	branches: 1.67.2; 1.67.8; 1.67.12; Change variable used for directory offset from "int" to "off_t". Overkill, but avoids a host of truncation problems.
1.66	24-Aug-1999	sommerfeld	Fix PR8270: Problem turned out to be due to improper handling of reads beyond EOF: they should just return without error with the uio unchanged, and the caller will recognize this as a zero-byte return (EOF). The previous fix to protect directory reads against bogus uio_offset values returned EINVAL, which broke mount -o union, which only union'ed in the lower directory if the upper directory cleanly returned EOF. While we're here, protect kernfs as well.
1.65	03-Aug-1999	wrstuden	Add support for fcntl(2) to generate VOP_FCNTL calls. Any fcntl call with F_FSCTL set and F_SETFL calls generate calls to a new fileop fo_fcntl. Add genfs_fcntl() and soo_fcntl() which return 0 for F_SETFL and EOPNOTSUPP otherwise. Have all leaf filesystems use genfs_fcntl(). Reviewed by: thorpej Tested by: wrstuden
1.64	08-Jul-1999	wrstuden	Bump osrelease to 1.4E. Add layerfs files, remove null_subr.c. Update coda to new struct lock in struct vnode. make fdescfs, kernfs, portalfs, and procfs actually lock their vnodes. It's not that hard. Make unionfs set v_vnlock = NULL so any overlayed fs will call its VOP_LOCK.
1.63	24-Mar-1999	mrg	branches: 1.63.2; 1.63.4; completely remove Mach VM support. all that is left is the all the header files as UVM still uses (most of) these.
1.62	13-Aug-1998	kleink	Per POSIX, fail with EINVAL if advisory locking is attempted on a file type that doesn't support it, rather than using a homegrown EBADF or EOPNOTSUPP.
1.61	10-Aug-1998	matthias	create miscfs/genfs/genfs_vnops.c:genfs_enoioctl and make all the other filesystems use it instead of a private version.
1.60	09-Aug-1998	perry	bzero->memset, bcopy->memcpy, bcmp->memcmp
1.59	03-Aug-1998	kleink	Recognize _PC_SYNC_IO.
1.58	08-Mar-1998	mrg	standardise options header includes.
1.57	01-Mar-1998	fvdl	Merge with Lite2 + local changes
1.56	12-Feb-1998	thorpej	Don't include option headers if building an LKM.
1.55	10-Feb-1998	mrg	- add defopt's for UVM, UVMHIST and PMAP_NEW. - remove unnecessary UVMHIST_DECL's.
1.54	05-Feb-1998	mrg	initial import of the new virtual memory system, UVM, into -current. UVM was written by chuck cranor <chuck@maria.wustl.edu>, with some minor portions derived from the old Mach code. i provided some help getting swap and paging working, and other bug fixes/ideas. chuck silvers <chuq@chuq.com> also provided some other fixes. this is the rest of the MI portion changes. this will be KNF'd shortly. :-)
1.53	10-Oct-1997	fvdl	Bump last argument to VOP_READDIR to off_t (from u_long).
1.52	19-Sep-1997	leo	Implement the kernel part of pr-1891. This allows for a more flexible sized msgbuf. Note that old 'dmesg' and 'syslogd' binaries will continue running, though old 'dmesg' binaries will output a few bytes of junk at the start of the buffer, and will miss a few bytes at the end of the buffer.
1.51	10-Sep-1997	christos	PR/4098: Alan Barrett: Fix diagnostic printf formatting.
1.50	10-May-1997	pk	branches: 1.50.4; Move `struct kern_target' definition into kernfs.h
1.49	08-May-1997	mycroft	Pass the vnode type to vaccess(), and use it when checking VEXEC. Make sure that the mode bits passed to vaccess() and returned by foo_getattr() contain only permission bits.
1.48	25-Oct-1996	cgd	define path name string variables that we should not (and, thankfully, do not) modify as 'const char ' rather 'char '.
1.47	13-Oct-1996	christos	backout previous kprintf changes
1.46	10-Oct-1996	christos	printf -> kprintf, sprintf -> ksprintf
1.45	07-Sep-1996	mycroft	Implement poll(2).
1.44	01-Sep-1996	mycroft	Add a set of generic file system operations that most file systems use. Also, fix some time stamp bogosities.
1.43	16-Mar-1996	christos	Fix printf format follies.
1.42	13-Feb-1996	mycroft	GC *_nullop(). Minor nits.
1.41	09-Feb-1996	christos	miscfs prototype changes
1.40	09-Feb-1996	mycroft	Fix vop_link, vop_symlink, and vop_remove semantics in several ways: * Change the argument names to vop_link so they actually make sense. * Implement vop_link and vop_symlink for all file systems, so they do proper cleanup. * Require the file system to decide whether or not linking and unlinking of directories is allowed, and disable it for all current file systems.
1.39	09-Oct-1995	mycroft	Fix the inode calculation in kernfs_getattr().
1.38	09-Oct-1995	mycroft	Use the index number as the cookie, rather than multiplying by UIO_MX.
1.37	09-Oct-1995	mycroft	Add support for cookies, mostly from Greg Hudson.
1.36	15-Apr-1995	cgd	fix timeval vs. timespec warnings
1.35	03-Feb-1995	mycroft	Return EROFS rather than ENOENT in many cases. Also some cosmetic cleanup.
1.34	27-Dec-1994	mycroft	Format police.
1.33	24-Dec-1994	ws	Implement and use a common access checking routine
1.32	14-Dec-1994	mycroft	Remove a_fp.
1.31	01-Dec-1994	mycroft	Make sure averunnable.fscale is filled before using it.
1.30	14-Nov-1994	christos	fixed struct comment
1.29	20-Oct-1994	cgd	update for new syscall args description mechanism
1.28	21-Jul-1994	mycroft	Implement /kern/msgbuf.
1.27	29-Jun-1994	cgd	branches: 1.27.2; New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD'
1.26	15-Jun-1994	mycroft	Minor update from JSP after merging my changes.
1.25	15-Jun-1994	mycroft	Deal with silly DIAGNOSTIC check.
1.24	15-Jun-1994	mycroft	Use vget() for devices.
1.23	08-Jun-1994	mycroft	Update to 4.4-Lite fs code, with local changes.
1.22	17-May-1994	mycroft	Really fix the file size problem.
1.21	17-May-1994	cgd	actually set va_size!
1.20	14-Feb-1994	ws	Add .. entry to /kern
1.19	11-Feb-1994	cgd	don't give bogus return code from read()
1.18	09-Feb-1994	cgd	don't panic if user does 'cat /kern', though result is dubious.
1.17	05-Jan-1994	cgd	update with latest kernfs file system from jsp@sequent.com
1.16	22-Dec-1993	cgd	fix return type of vnode print routine
1.15	20-Dec-1993	cgd	branches: 1.15.2; pull load average and misc changes down from magnum
1.14	18-Dec-1993	mycroft	Canonicalize all #includes.
1.13	20-Nov-1993	cgd	#ifdef out /kern/root at theo's request
1.12	07-Sep-1993	ws	branches: 1.12.2; Changes to VFS readdir semantics NFS changes for better cookie support ISOFS changes for better Rockridge support and support for generation numbers
1.11	02-Aug-1993	mycroft	Make kernfs_print have a return type of void.
1.10	07-Jun-1993	cgd	give various filesystems their own vnode types
1.9	28-May-1993	cgd	add some more functionality: a setattr which supports chmod+chown+chgrp, and the various support elsewhere to deal with it.
1.8	28-May-1993	cgd	add kernfs_access function, to kill kernfs security hole
1.7	20-May-1993	cgd	header cleanup
1.6	27-Apr-1993	cgd	fix several off-by-one errors in hostname setting/reading
1.5	27-Apr-1993	mycroft	Use EPERM when write permission is denied, not EBADF.
1.4	27-Mar-1993	cgd	added ".." and support for "rrootdev"
1.3	25-Mar-1993	cgd	fixed problem where you couldn't unmount after looking...
1.2	25-Mar-1993	cgd	changed copyright notice thanks to following statement: Return-Path: jsp@compnews.co.uk Received: from ben.uknet.ac.uk by postgres.Berkeley.EDU (5.61/1.29) id AA25983; Thu, 25 Mar 93 05:37:37 -0800 Received: from fennel.compnews.co.uk by ben.uknet.ac.uk via UKIP with SMTP (PP) id <g.05640-0@ben.uknet.ac.uk>; Thu, 25 Mar 1993 13:37:19 +0000 Received: from sage.compnews.co.uk by fennel.compnews.co.uk; Thu, 25 Mar 93 13:37:08 GMT Message-Id: <28109.9303251337@sage.compnews.co.uk> From: jsp@compnews.co.uk (Jan-Simon Pendry) Date: Thu, 25 Mar 1993 13:37:05 +0100 In-Reply-To: cgd@postgres.berkeley.edu's message as of Mar 25, 5:32am. Phone-Number-1: +44 430 432450 Phone-Number-2: +44 430 432480 x20 Fax-Number: +44 430 432022 X-Mailer: Mail User's Shell (7.2.5 10/14/92) To: cgd@postgres.berkeley.edu Subject: Re: fdesc/kernfs/etc code... You may put this copyright message on the source code: /* * Copyright (c) 1990, 1992 Jan-Simon Pendry * All rights reserved. * * This code is derived from software contributed to Berkeley by * Jan-Simon Pendry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */
1.1	23-Mar-1993	cgd	branches: 1.1.1; files which implement the kern filesystem. from Jan-Simon Pendry, pendry@vangogh.cs.berkeley.edu
1.1.1.2	01-Mar-1998	fvdl	Import 4.4BSD-Lite2
1.1.1.1	01-Mar-1998	fvdl	Import 4.4BSD-Lite for reference
1.12.2.4	29-Nov-1993	mycroft	Don't crash deferencing a null pointer if the raw root device was not found.
1.12.2.3	20-Nov-1993	cgd	update from trunk
1.12.2.2	14-Nov-1993	mycroft	Canonicalize all #includes.
1.12.2.1	24-Sep-1993	mycroft	kernfs_vnops: averunnable changes.
1.15.2.3	06-Jan-1994	pk	Re-instate EOPNOTSUPP
1.15.2.2	28-Dec-1993	pk	Use ENODEV rather then EOPNOTSUP for unsupported operations on non-socket devices
1.15.2.1	20-Dec-1993	pk	file kernfs_vnops.c was added on branch magnum on 1993-12-28 16:35:19 +0000
1.27.2.1	22-Jul-1994	cgd	from trunk.
1.50.4.3	14-Oct-1997	thorpej	Update marc-pcmcia branch from trunk.
1.50.4.2	22-Sep-1997	thorpej	Update marc-pcmcia branch from trunk.
1.50.4.1	16-Sep-1997	thorpej	Update marc-pcmcia branch from trunk.
1.63.4.1	02-Aug-1999	thorpej	Update from trunk.
1.63.2.1	28-Aug-1999	he	Pull up revisions 1.66-1.67: Protect {fdesc,kernfs,procfs}_readdir against directory seeks with bogus offsets. (sommerfeld)
1.67.12.1	14-Jul-2000	thorpej	Update from trunk: Sprinkle some const.
1.67.8.1	21-Dec-1999	wrstuden	Initial commit of recent changes to make DEV_BSIZE go away. Runs on i386, needs work on other arch's. Main kernel routines should be fine, but a number of the stand programs need help. cd, fd, ccd, wd, and sd have been updated. sd has been tested with non-512 byte block devices. vnd, raidframe, and lfs need work. Non 2**n block support is automatic for LKM's and conditional for kernels on "options NON_PO2_BLOCKS".
1.67.2.3	12-Mar-2001	bouyer	Sync with HEAD.
1.67.2.2	11-Feb-2001	bouyer	Sync with HEAD.
1.67.2.1	20-Nov-2000	bouyer	Update thorpej_scsipi to -current as of a month ago
1.75.2.6	18-Oct-2002	nathanw	Catch up to -current.
1.75.2.5	13-Aug-2002	nathanw	Catch up to -current.
1.75.2.4	01-Aug-2002	nathanw	Catch up to -current.
1.75.2.3	08-Jan-2002	nathanw	Catch up to -current.
1.75.2.2	14-Nov-2001	nathanw	Catch up to -current.
1.75.2.1	21-Jun-2001	nathanw	Catch up to -current.
1.76.6.1	12-Nov-2001	thorpej	Sync the thorpej-mips-cache branch with -current.
1.76.2.2	06-Sep-2002	jdolecek	sync kqueue branch with HEAD
1.76.2.1	10-Jan-2002	thorpej	Sync kqueue branch with -current.
1.79.10.3	29-Nov-2005	tron	Pull up following revision(s) (requested by christos in ticket #5952): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.114 via patch Fix 64 bit truncation problem reported by http://www.securitylab.net
1.79.10.2	14-Oct-2002	lukem	Pull up revision 1.84 (requested by jdolecek in ticket #911): put back the while loop in kernfs_getattr() removed in rev 1.82; it's necessary to get the whole file length e.g. for msgbuf this fixes the '/kern/msgbuf & less' problem reported on port-i386 by Dave Tyson
1.79.10.1	21-Jul-2002	lukem	Pull up revision 1.82 (requested by jdolocek in ticket #526): Properly detect error in kernfs_xread(). Fixes kern/10278 by IWAMOTO Toshihiro, though implemented different way. While here, clean up some int vs. size_t confusion, make kernfs_x{read\|write}() static and g/c some #if 0 stuff.
1.79.8.3	29-Aug-2002	gehenna	catch up with -current.
1.79.8.2	20-Jul-2002	gehenna	catch up with -current.
1.79.8.1	15-Jul-2002	gehenna	catch up with -current.
1.88.2.10	11-Dec-2005	christos	Sync with head.
1.88.2.9	10-Nov-2005	skrll	Sync with HEAD. Here we go again...
1.88.2.8	04-Mar-2005	skrll	Sync with HEAD. Hi Perry!
1.88.2.7	31-Oct-2004	skrll	Reduce diff to HEAD.
1.88.2.6	27-Oct-2004	skrll	Fix various comments that describe the argument structures
1.88.2.5	21-Sep-2004	skrll	Fix the sync with head I botched.
1.88.2.4	18-Sep-2004	skrll	Sync with HEAD.
1.88.2.3	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.
1.88.2.2	03-Aug-2004	skrll	Sync with HEAD
1.88.2.1	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.
1.98.2.7	29-Nov-2005	tron	Pull up following revision(s) (requested by christos in ticket #10155): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.114 via patch Fix 64 bit truncation problem reported by http://www.securitylab.net
1.98.2.6	01-Sep-2005	riz	Pull up following revision(s) (requested by christos in ticket #5637): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.112 Also protect the ipsec ioctls from negative offsets to prevent panics in m_copydata(). Pointed out by Karl Janmar. Move the negative offset check from kernfs_xread() to kernfs_read().
1.98.2.5	31-Aug-2005	tron	Pull up following revision(s) (requested by christos in ticket #5633): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.111 Don't allow negative offsets when reading the message buffer, because it can allow reading arbitrary kernel memory.
1.98.2.4	24-May-2005	riz	Pull up revision 1.108 (requested by chs in ticket #1540): kernfs does not support mmap(), remove code that pretends that it does.
1.98.2.3	15-May-2004	tron	branches: 1.98.2.3.2; Pull up revision 1.104 (requested by cl in ticket #326): Workaround for gcc 2.95.3 failing to initialize structures and/or unions inside structures using nested designators. Should be reverted when gcc >=3.3.3 is ready for vax.
1.98.2.2	15-May-2004	tron	Pull up revision 1.102 (requested by cl in ticket #336): Allow additional entries (files, subdirs) in kernfs. Also allow defining additional kfstypes and provide hooks to run arbitrary code for any vnodeop on the additional types.
1.98.2.1	14-May-2004	jdc	Pull up revision 1.100 and 1.101 (requested by cl in ticket #322). Find the right entry when doing lookup on dotdot in kern/ipsec subdirs. Also remove some duplicate code. Make lookup and readdir return the same inode number. kernfs_readdir now uses kernfs_allocvp to map from kernfs entry to inode number, kernfs_allocvp is now the only place where entries are mapped to inode numbers. Also make KERNFS_FILENO not return random results for entries not in kern_targets.
1.98.2.3.2.4	29-Nov-2005	tron	Pull up following revision(s) (requested by christos in ticket #10155): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.114 via patch Fix 64 bit truncation problem reported by http://www.securitylab.net
1.98.2.3.2.3	01-Sep-2005	riz	branches: 1.98.2.3.2.3.2; Pull up following revision(s) (requested by christos in ticket #5637): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.112 Also protect the ipsec ioctls from negative offsets to prevent panics in m_copydata(). Pointed out by Karl Janmar. Move the negative offset check from kernfs_xread() to kernfs_read().
1.98.2.3.2.2	31-Aug-2005	tron	Pull up following revision(s) (requested by christos in ticket #5633): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.111 Don't allow negative offsets when reading the message buffer, because it can allow reading arbitrary kernel memory.
1.98.2.3.2.1	24-May-2005	riz	Pull up revision 1.108 (requested by chs in ticket #1540): kernfs does not support mmap(), remove code that pretends that it does.
1.98.2.3.2.3.2.1	29-Nov-2005	tron	Pull up following revision(s) (requested by christos in ticket #10155): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.114 via patch Fix 64 bit truncation problem reported by http://www.securitylab.net
1.106.6.1	19-Mar-2005	yamt	sync with head. xen and whitespace. xen part is not finished.
1.106.4.1	29-Apr-2005	kent	sync with -current
1.107.2.4	24-Nov-2005	tron	Pull up following revision(s) (requested by christos in ticket #992): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.114 via patch Fix 64 bit truncation problem reported by http://www.securitylab.net
1.107.2.3	01-Sep-2005	tron	Pull up following revision(s) (requested by christos in ticket #728): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.112 Also protect the ipsec ioctls from negative offsets to prevent panics in m_copydata(). Pointed out by Karl Janmar. Move the negative offset check from kernfs_xread() to kernfs_read().
1.107.2.2	31-Aug-2005	tron	Pull up following revision(s) (requested by christos in ticket #727): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.111 Don't allow negative offsets when reading the message buffer, because it can allow reading arbitrary kernel memory.
1.107.2.1	28-May-2005	tron	Pull up revision 1.108 (requested by chs in ticket #329): kernfs does not support mmap(), remove code that pretends that it does.
1.109.2.4	21-Jan-2008	yamt	sync with head
1.109.2.3	07-Dec-2007	yamt	sync with head
1.109.2.2	30-Dec-2006	yamt	sync with head.
1.109.2.1	21-Jun-2006	yamt	sync with head.
1.112.2.1	20-Oct-2005	yamt	adapt kernfs.
1.113.2.1	29-Nov-2005	yamt	sync with head.
1.116.6.3	01-Jun-2006	kardel	Sync with head.
1.116.6.2	22-Apr-2006	simonb	Sync with head.
1.116.6.1	04-Feb-2006	simonb	Adapt for timecounters: mostly use get*time() and use "time_second" instead of "time.tv_sec".
1.116.4.1	09-Sep-2006	rpaulo	sync with head
1.116.2.1	05-Feb-2006	yamt	adapt kernfs.
1.117.4.2	19-Apr-2006	elad	sync with head.
1.117.4.1	08-Mar-2006	elad	Adapt to kernel authorization KPI.
1.117.2.4	26-Jun-2006	yamt	sync with head.
1.117.2.3	24-May-2006	yamt	sync with head.
1.117.2.2	11-Apr-2006	yamt	sync with head
1.117.2.1	01-Apr-2006	yamt	sync with head.
1.118.2.1	24-May-2006	tron	Merge 2006-05-24 NetBSD-current into the "peter-altq" branch.
1.120.2.1	19-Jun-2006	chap	Sync with head.
1.121.2.1	13-Jul-2006	gdamore	Merge from HEAD.
1.125.6.2	10-Dec-2006	yamt	sync with head.
1.125.6.1	22-Oct-2006	yamt	sync with head
1.125.4.2	12-Jan-2007	ad	Sync with head.
1.125.4.1	18-Nov-2006	ad	Sync with head.
1.128.2.1	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%.
1.132.26.2	18-Feb-2008	mjf	Sync with HEAD.
1.132.26.1	08-Dec-2007	mjf	Sync with HEAD.
1.132.20.1	09-Jan-2008	matt	sync with HEAD
1.132.18.1	27-Nov-2007	joerg	Sync with HEAD. amd64 Xen support needs testing.
1.132.6.1	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.
1.133.6.1	02-Jan-2008	bouyer	Sync with HEAD
1.133.2.1	04-Dec-2007	ad	Pull the vmlocking changes into a new branch.
1.134.20.2	28-Apr-2009	skrll	Sync with HEAD.
1.134.20.1	19-Jan-2009	skrll	Sync with HEAD.
1.134.12.4	11-Aug-2010	yamt	sync with head.
1.134.12.3	11-Mar-2010	yamt	sync with head
1.134.12.2	18-Jul-2009	yamt	sync with head.
1.134.12.1	04-May-2009	yamt	sync with head.
1.134.8.1	29-Mar-2008	christos	Welcome to the time_t=long long dev_t=uint64_t branch.
1.134.6.1	17-Jan-2009	mjf	Sync with HEAD.
1.135.2.2	23-Jul-2009	jym	Sync with HEAD.
1.135.2.1	13-May-2009	jym	Sync with HEAD. Commit is split, to avoid a "too many arguments" protocol error.
1.140.4.3	05-Mar-2011	rmind	sync with head
1.140.4.2	03-Jul-2010	rmind	sync with head
1.140.4.1	30-May-2010	rmind	sync with head
1.140.2.2	17-Aug-2010	uebayasi	Sync with HEAD.
1.140.2.1	30-Apr-2010	uebayasi	Sync with HEAD.
1.143.12.2	05-Apr-2012	mrg	sync to latest -current.
1.143.12.1	18-Feb-2012	mrg	merge to -current.
1.143.8.2	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")
1.143.8.1	17-Apr-2012	yamt	sync with head
1.144.2.2	03-Sep-2016	bouyer	Revert ticket 1367, it causes a kernel panic in test lib/libc/gen/t_getcwd as seen in e.g. http://www-soc.lip6.fr/~bouyer/NetBSD-tests/xen/netbsd-6/i386/201608291710Z_anita.txt lib/libc/gen/t_getcwd (206/500): 2 test cases getcwd_err: [0.006614s] Passed. getcwd_fts: uvm_fault(0xc0e221b0, 0, 1) -> 0xe fatal page fault in supervisor mode trap type 6 code 0 eip c023ba9f cs 9 eflags 10246 cr2 1c ilevel 0 panic: trap cpu1: Begin traceback... panic(c04616d0,cdcfb938,cdcfb938,c023ba9f,9,10246,1c,0,1c,0) at netbsd:panic+0x18 trap() at netbsd:trap+0xb51 --- trap (number 6) --- kernfs_readdir(cdcfbc0c,1,c11ce0b4,c0439f60,c11ce0b4,cdcfbc58,c0cc0cc0,cdcfbc7c,0,0) at netbsd:kernfs_readdir+0x98f VOP_READDIR(c11ce0b4,cdcfbc58,c0cc0cc0,cdcfbc7c,0,0,c19287e0,1,cdcfbc58,cdcfbc74) at netbsd:VOP_READDIR+0x68 vn_readdir(c14c3000,bb512000,0,1000,cdcfbcbc,c19287e0,0,0,c14c3000,0) at netbsd:vn_readdir+0xbd sys___getdents30(c19287e0,cdcfbd00,cdcfbd28,186,bb516000,0,cdcfbd00,c1199bf4,2,bb7a4fe7) at netbsd:sys___getdents30+0x8c syscall(cdcfbd48,bb6b00b3,ab,bf7f001f,bb6b001f,0,bb5010d0,bf7fe764,bb7c4be0,0) at netbsd:syscall+0xaa cpu1: End traceback...
1.144.2.1	27-Aug-2016	bouyer	Pull up following revision(s) (requested by is in ticket #1367): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.151 >From Ilya Zykov: Unbreak kernfs which was broken by this commit \|Make the spec_node table implementation private to spec_vnops.c. \|To retrieve a spec_node, two new lookup functions (by device or by mount) \|are implemented. Both return a referenced vnode, for an opened block device \|the opened vnode is returned so further diagnostic checks "vp == ... sd_bdevvp" \|will not fire. Otherwise any vnode matching the criteria gets returned. \|No objections on tech-kern. The effect was that ls /kernfs appeared empty in most cases.
1.146.2.3	03-Dec-2017	jdolecek	update from HEAD
1.146.2.2	20-Aug-2014	tls	Rebase to HEAD as of a few days ago.
1.146.2.1	23-Jun-2013	tls	resync from head
1.147.6.1	18-May-2014	rmind	sync with head
1.150.2.1	10-Aug-2014	tls	Rebase.
1.154.10.1	29-Aug-2019	martin	Pull up following revision(s) (requested by hannken in ticket #1703): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.161 sys/miscfs/procfs/procfs_vnops.c: revision 1.207 Add missing operation VOP_GETPAGES() returning EFAULT. Without this operation posix_fadvise(..., POSIX_FADV_WILLNEED) would leave the v_interlock held. Observed by maxv@
1.154.6.1	29-Aug-2019	martin	Pull up following revision(s) (requested by hannken in ticket #1703): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.161 sys/miscfs/procfs/procfs_vnops.c: revision 1.207 Add missing operation VOP_GETPAGES() returning EFAULT. Without this operation posix_fadvise(..., POSIX_FADV_WILLNEED) would leave the v_interlock held. Observed by maxv@
1.154.4.3	28-Aug-2017	skrll	Sync with HEAD
1.154.4.2	05-Oct-2016	skrll	Sync with HEAD
1.154.4.1	06-Jun-2015	skrll	Sync with HEAD
1.154.2.1	29-Aug-2019	martin	Pull up following revision(s) (requested by hannken in ticket #1703): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.161 sys/miscfs/procfs/procfs_vnops.c: revision 1.207 Add missing operation VOP_GETPAGES() returning EFAULT. Without this operation posix_fadvise(..., POSIX_FADV_WILLNEED) would leave the v_interlock held. Observed by maxv@
1.155.2.1	26-Apr-2017	pgoyette	Sync with HEAD
1.156.2.1	21-Apr-2017	bouyer	Sync with HEAD
1.158.8.2	06-Sep-2018	pgoyette	Sync with HEAD Resolve a couple of conflicts (result of the uimin/uimax changes)
1.158.8.1	07-Apr-2018	pgoyette	Sync with HEAD. 77 conflicts resolved - all of them $NetBSD$
1.158.2.1	29-Aug-2019	martin	Pull up following revision(s) (requested by hannken in ticket #1346): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.161 sys/miscfs/procfs/procfs_vnops.c: revision 1.207 Add missing operation VOP_GETPAGES() returning EFAULT. Without this operation posix_fadvise(..., POSIX_FADV_WILLNEED) would leave the v_interlock held. Observed by maxv@
1.159.2.2	13-Apr-2020	martin	Mostly merge changes from HEAD upto 20200411
1.159.2.1	10-Jun-2019	christos	Sync with HEAD
1.160.4.3	06-Jul-2021	martin	Pull up following revision(s) (requested by dholland in ticket #1318): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.169 sys/miscfs/kernfs/kernfs_vnops.c: revision 1.170 Add missing VOP_KQFILTER to kernfs. Not sure if lack of it can be used for local DoS or not, but best to fix. - Fix perms on /kern/{r,}rootdev.
1.160.4.2	12-Feb-2020	martin	Pull up following revision(s) (requested by riastradh in ticket #702): sys/miscfs/kernfs/kernfs_vfsops.c: revision 1.98 sys/miscfs/kernfs/kernfs_vnops.c: revision 1.163 sys/miscfs/kernfs/kernfs.h: revision 1.43 Use specfs vnops for specnodes in kernfs. While here, don't filter out rootdev and rrootdev merely because they're not cached. Fixes the elusive /kern/rootdev and /kern/rrootdev nodes, which only appeared sometimes when they felt like it, and fixes operations on /kern/rootdev and /kern/rrootdev always returning EOPNOTSUPP. We didn't seem to have a single PR for these issues but the following PRs are all relevant: PR bin/13564 PR kern/38265 PR kern/38778 PR kern/45974 XXX pullup-9, pullup-8, pullup-7, pullup-6, pullup-5, pullup-4, pullup-3, p= ullup-2, pullup-1.4T...
1.160.4.1	01-Sep-2019	martin	Pull up following revision(s) (requested by hannken in ticket #132): sys/miscfs/kernfs/kernfs_vnops.c: revision 1.161 sys/miscfs/procfs/procfs_vnops.c: revision 1.207 Add missing operation VOP_GETPAGES() returning EFAULT. Without this operation posix_fadvise(..., POSIX_FADV_WILLNEED) would leave the v_interlock held. Observed by maxv@
1.162.2.1	29-Feb-2020	ad	Sync with head.
1.166.6.1	01-Aug-2021	thorpej	Sync with HEAD.

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