Commit Graph

119 Commits

Author SHA1 Message Date
Suleiman Souhlal
679985d03a Allow EVFILT_VNODE events to work on every filesystem type, not just
UFS by:
- Making the pre and post hooks for the VOP functions work even when
DEBUG_VFS_LOCKS is not defined.
- Moving the KNOTE activations into the corresponding VOP hooks.
- Creating a MNTK_NOKNOTE flag for the mnt_kern_flag field of struct
mount that permits filesystems to disable the new behavior.
- Creating a default VOP_KQFILTER function: vfs_kqfilter()

My benchmarks have not revealed any performance degradation.

Reviewed by:	jeff, bde
Approved by:	rwatson, jmg (kqueue changes), grehan (mentor)
2005-06-09 20:20:31 +00:00
Jeff Roberson
680a1ec631 - Add the character "E" to the understood lock types. This means
the VOP requires an exclusive lock.

Sponsored by:	Isilon Systems, Inc.
2005-04-11 15:15:03 +00:00
Poul-Henning Kamp
119798b384 Add VOP_FOO_APV() which takes a pointer to the vop_vector.
This allows stacked or partitioned filesystems to say "Continue
the normal resolution from here", for instace from FFS to UFS.

Use VNASSERT() instead of KASSERT().
2005-02-08 12:54:32 +00:00
Poul-Henning Kamp
de8a6c067a Get rid of the VDESC() macro while the pot is boiling anyway, it is
only used from generate files now, so we might as well generate the
right stuff from the start.
2005-01-13 08:05:20 +00:00
Poul-Henning Kamp
63f89abf4a Change the generated VOP_ macro implementations to improve type checking
and KASSERT coverage.

After this check there is only one "nasty" cast in this code but there
is a KASSERT to protect against the wrong argument structure behind
that cast.

Un-inlining the meat of VOP_FOO() saves 35kB of text segment on a typical
kernel with no change in performance.

We also now run the checking and tracing on VOP's which have been layered
by nullfs, umapfs, deadfs or unionfs.

    Add new (non-inline) VOP_FOO_AP() functions which take a "struct
    foo_args" argument and does everything the VOP_FOO() macros
    used to do with checks and debugging code.

    Add KASSERT to VOP_FOO_AP() check for argument type being
    correct.

    Slim down VOP_FOO() inline functions to just stuff arguments
    into the struct foo_args and call VOP_FOO_AP().

    Put function pointer to VOP_FOO_AP() into vop_foo_desc structure
    and make VCALL() use it instead of the current offsetoff() hack.

    Retire vcall() which implemented the offsetoff()

    Make deadfs and unionfs use VOP_FOO_AP() calls instead of
    VCALL(), we know which specific call we want already.

    Remove unneeded arguments to VCALL() in nullfs and umapfs bypass
    functions.

    Remove unused vdesc_offset and VOFFSET().

    Generally improve style/readability of the generated code.
2005-01-13 07:53:01 +00:00
Warner Losh
60727d8b86 /* -> /*- for license, minor formatting changes 2005-01-07 02:29:27 +00:00
Warner Losh
3c20c603ca dheader and hheader were the same function, really, so rename one of
them to header, kill the other and use both with a different arg...
2004-12-31 21:12:17 +00:00
Warner Losh
70eefcc55b Use functions to make the program clearer. 2004-12-31 21:02:43 +00:00
Warner Losh
2fe2cbd59b Allow -d and -h as command line flags. These are used to generate
only the .h or _data.h files respectively.  Restructure code to allow
for this.
2004-12-30 23:18:34 +00:00
Warner Losh
57c75b8f1a Rather than casting through a (void *) to avoid the aliasing warning,
do things correctly from an aliasing perspective.  Put the
vop_generic_args element as the first element for all the vop_*_args
and adjust the code to take the address of that instead of the
structure.

OK'd based on a vague description by: phk
2004-12-13 07:23:34 +00:00
Warner Losh
98a67cd840 Cast from the specific vop_*_args to vop_generic_args via a (void *)
pointer to eliminate the hundreds of warnings that we have in tree at
the moment.

# Chances are good that all the struct vop_*_args should have, as its
# first element, the struct vop_generic_args, and when necessary to
# reference it, we just take its address rather than going through
# this double case.
2004-12-13 06:13:52 +00:00
Poul-Henning Kamp
aec0fb7b40 Back when VOP_* was introduced, we did not have new-style struct
initializations but we did have lofty goals and big ideals.

Adjust to more contemporary circumstances and gain type checking.

	Replace the entire vop_t frobbing thing with properly typed
	structures.  The only casualty is that we can not add a new
	VOP_ method with a loadable module.  History has not given
	us reason to belive this would ever be feasible in the the
	first place.

	Eliminate in toto VOCALL(), vop_t, VNODEOP_SET() etc.

	Give coda correct prototypes and function definitions for
	all vop_()s.

	Generate a bit more data from the vnode_if.src file:  a
	struct vop_vector and protype typedefs for all vop methods.

	Add a new vop_bypass() and make vop_default be a pointer
	to another struct vop_vector.

	Remove a lot of vfs_init since vop_vector is ready to use
	from the compiler.

	Cast various vop_mumble() to void * with uppercase name,
	for instance VOP_PANIC, VOP_NULL etc.

	Implement VCALL() by making vdesc_offset the offsetof() the
	relevant function pointer in vop_vector.  This is disgusting
	but since the code is generated by a script comparatively
	safe.  The alternative for nullfs etc. would be much worse.

	Fix up all vnode method vectors to remove casts so they
	become typesafe.  (The bulk of this is generated by scripts)
2004-12-01 23:16:38 +00:00
Poul-Henning Kamp
be392b4025 emit a "typedef vop_foo_t(struct vop_foo_args *);" which we can use
to prototype VOP functions with.
2004-12-01 11:51:20 +00:00
Doug Rabson
8ff7da8ce8 Pass doxygen doc comments through to the output. 2004-07-11 16:14:24 +00:00
Nate Lawson
bcc2d4d520 Complete quirk handling script by matching the in-kernel table format.
Use a union to properly assign values.  Collapse some unnecessary variables
in the revision rules.
2004-06-30 04:40:20 +00:00
Nate Lawson
94f529791f Add a script to parse acpi_quirks into a header file that we can compile
into ACPI.  Script written by Mark Santcroos with some edits from myself.

Submitted by:	marks
2004-06-24 06:28:05 +00:00
Warner Losh
c4e54758fe devlist2h.awk is too generic a name for what it does. It really
converts miidevs to a .h file, so rename to reflect that.

The usb and pccard versions have also been renamed and will be hooked
into the build system shortly (I've made the conversion in my p4
tree).
2004-05-26 00:19:39 +00:00
David E. O'Brien
e5b1e74d89 Correct $FreeBSD$ style. 2004-04-16 05:22:11 +00:00
Warner Losh
82c6e87991 Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core
2004-04-07 04:19:52 +00:00
Peter Wemm
0ec876a2f0 Attempt to clean up the emu10k1-alsa.h stuff so that config doesn't
delete it each time its run and have it regenerated each time by make.
I used a quick hackish script rather than putting it in the files file
and used the before-depend rule to avoid the depend/no-depend hacks.
2004-02-05 22:51:16 +00:00
Doug Rabson
6c021c7220 Changes for new SMP-safe kobj method dispatch algorithm. 2003-10-16 13:29:26 +00:00
Don Lewis
7144b1d4bd Don't check the state of the vnode interlock if the specification says
that the lock should not be checked.

Skip the lock assertion checks for *vpp or any other pointer to a vnode
pointer if vpp (or equivalent) is NULL.
2003-06-22 21:20:06 +00:00
Stefan Eßer
86ed89620e The assertions generated to test VFS locking never included checks
for vnodes reached through double indirection (i.e. **vpp). This
is worked-around by special-casing the identifier "vpp" (adding one
level of indirection).

The alternative fix mentioned in the PR had required substantial
changes to this script.

In case there are locking violations that had been hidden without
this patch, they may suddenly show up, now ...

This change does not affect code compiled without DEBUG_VFS_LOCKS.

PR:		kern/46652
2003-06-20 12:15:37 +00:00
Warner Losh
2983138955 MFp4:
Don't generate the data file.
Use 0xffffffff rather than -1 for sign safety as these fields are uint32_t.
2003-03-28 06:43:50 +00:00
David E. O'Brien
2d3ce7133a Remove miidevs.h and generate it from miidevs at compile time.
The devlist2h.awk tool to do this has been repocopied to sys/tools/.
2003-01-19 02:59:34 +00:00
Jeff Roberson
6423c9433c - Move ASSERT_VOP_*LOCK* functionality into functions in vfs_subr.c
- Make the VI asserts more orthogonal to the rest of the asserts by using a
   new, common vfs_badlock() function and adding a 'str' arg.
 - Adjust generated ASSERTS to match the new prototype.
 - Adjust explicit ASSERTS to match the new prototype.
2002-09-26 04:48:44 +00:00
Jeff Roberson
155974701d - Automatically generate and insert KTR points in all VOPs. 2002-09-23 05:50:07 +00:00
Jeff Roberson
71ea4ba57c - Add two new debugging macros: ASSERT_VI_LOCKED and ASSERT_VI_UNLOCKED
- Use the new VI asserts in place of the old mtx_assert checks.
 - Add the VI asserts to the automated lock checking in the VOP calls.  The
   interlock should not be held across vops with a few exceptions.
 - Add the vop_(un)lock_{pre,post} functions to assert that interlock is held
   when LK_INTERLOCK is set.
2002-08-21 06:19:29 +00:00
David E. O'Brien
1c8deadc52 Use mv -f. Otherwise if you accidently build as root, and then as a user,
it keeps asking you if you want to overwrite it or not.

Submitted by:	peter
2002-08-20 03:06:30 +00:00
Jeff Roberson
cf409a0a98 - Add automatic post vop debug checks. These work in both the success and
failure cases.
2002-07-30 08:52:00 +00:00
Jeff Roberson
5c08ffed5d - Use 'options DEBUG_VFS_LOCKS' instead of the DEBUG_ALL_VFS_LOCKS
environment variable to enable the lock verifiction code.
2002-07-07 06:39:36 +00:00
Jeff Roberson
d1376090b2 Add a new configuration directive that inserts calls to debugging functions
in the VOP inlines.  This is intended to replace the simple locking
specifications for calls that have more complicated behavior such as rename and
lookup.

The syntax of the new entries is:
#! name	pre/post	function

If the function is marked 'pre' it is executed prior to calling the VOP and
takes a pointer to a struct vop_{name}_args as it's only parameter.

If the function is marked 'post' it is executed after the VOP call and takes
a pointer to a struct vop_{name}_args as it's first parameter and the integer
return value from the vop as the second paramter.
2002-07-06 03:46:36 +00:00
Jeff Roberson
ef317162da include systm.h in vnode_if.c so that panic is defined when we're doing
DEBUG_ALL_VFS_LOCKS.
2002-05-04 02:35:13 +00:00
David E. O'Brien
dfbf15ee80 Awk version of makeobjops.PL.
Note the invocation ordering is slightly different:
	awk -f makeobjops.awk foo.m -ch

Submitted by:	Oliver Fromme <olli@fromme.com>
2002-05-01 03:19:19 +00:00
Josef Karthauser
a4c63369dd constify 2002-04-01 19:22:04 +00:00
David E. O'Brien
fda3199fb9 Return vnode_if back to its AWK roots.
It became a Perl script in rev 1.20.  This removes one more dependence
on perl for the kernel build.
2002-03-01 01:20:23 +00:00
Mike Silbersack
a262ae8267 Throw the $FreeBSD$s back in, properly escaping them. 2002-01-04 05:27:47 +00:00
Mike Silbersack
91ea78c52a Remove $FreeBSD$s from previous commit; perl thinks that they're
something to be interpreted.  Urk.
2002-01-04 01:40:50 +00:00
Mike Silbersack
cd6fdcb9ac Solve vnode_if.pl's identity crisis; make sure that it refers to itself
as vnode_if.pl instead of vnode_if.sh.

PR:		33509
MFC after:	3 weeks
2002-01-03 21:53:09 +00:00
Warner Losh
e2a83ea7f8 Move from using PCCARD_ symbols gereated from this file to using PCMCIA_
symbols so that driver lists are easier to share and keep in sync.
2001-11-11 20:15:06 +00:00
Julian Elischer
b40ce4165d KSE Milestone 2
Note ALL MODULES MUST BE RECOMPILED
make the kernel aware that there are smaller units of scheduling than the
process. (but only allow one thread per process at this time).
This is functionally equivalent to teh previousl -current except
that there is a thread associated with each process.

Sorry john! (your next MFC will be a doosie!)

Reviewed by: peter@freebsd.org, dillon@freebsd.org

X-MFC after:    ha ha ha ha
2001-09-12 08:38:13 +00:00
Alfred Perlstein
ec4dff5e50 replace calls to non-existant bail() subroutine with calls to
the die() builtin function.
2001-03-23 11:48:50 +00:00
Peter Wemm
7ca7bbb36b Simplify this a bit so that it doesn't have to generate silly redundant
__P() prototypes when an ansi-style static inline is a prototype already.
Since vnode_if.[ch] are generated on the fly, there are no CVS diffs to
mess up.
2000-12-06 06:59:38 +00:00
Alfred Perlstein
35b1da8080 remove crufty exec stuff, perl is in the base system
make it work with warnings on (there was some harmless use of uninitialized
variables)
make it work with 'use strict'

Approved by: peter
2000-06-27 19:09:55 +00:00
Peter Wemm
6f77b2defc Use a seperate -c and -h mode. The vnode_if.c file is compiled only into
the kernel while the vnode_if.h header is a bunch of inlines to call the
code that is in the kernel. Generating the .h file on the fly is kinda
bogus because it has to match the one compiled into the kernel.

IMHO we should have kern/vnode_if.c and sys/vnode_if.h committed in the
tree but that's another battle.
1999-12-12 16:43:05 +00:00
Nick Hibma
5630d3135e Add usbdevs and friends. 1999-11-18 18:02:44 +00:00
Warner Losh
c2380338f0 Moderately hacked pccard code from newconfig. It is somewhat in
incomplete and likely has problem.  The code was originally pcmcia,
but I renamed it to pccard and made it compile on FreeBSD -current.  I
converted SIMPLEQ to STAILQ as well as a few sc->dev.xname ->
device_printf changes.  This is a green port of fairly mature code.

I derived this work from the FreeBSD newconfig project
(http://www.jp.freebsd.org/newconfig).  Any problems with it are
likely introduced by me.

Obtained from: newconfig project
1999-10-26 06:52:31 +00:00
Eivind Eklund
3176a7fe12 Update this to be able to output ASSERT_VOP_(UN)LOCKED() based on the
lock specifications in kern/vnode_if.src.  At present, this do not
distinguish between exclusive and shared locks, and the kernel is so full
of bugs in this area that running with auto-generation of assertions
enabled makes DEBUG_VFS_LOCKS totally useless for anybody that has used it
for anything prior to outputting automated assertions.  Due to this, I made
vnode_if.sh only output locking assertions if you have the environment
variable DEBUG_ALL_VFS_LOCKS set to "YES".  In order to actually use the
assertions, you need to also add "options DEBUG_VFS_LOCKS" to your kernel
config file.

Urged to commit by:	phk
1999-09-26 18:31:51 +00:00
Peter Wemm
ee15718941 $Id$ -> $FreeBSD$ (some mangled and/or hidden ones) 1999-08-28 02:21:15 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Bill Paul
d00275330d This commit adds support for the NetBSD MII abstraction layer and
MII-compliant PHY drivers. Many 10/100 ethernet NICs available today
either use an MII transceiver or have built-in transceivers that can
be programmed using an MII interface. It makes sense then to separate
this support out into common code instead of duplicating it in all
of the NIC drivers. The mii code also handles all of the media
detection, selection and reporting via the ifmedia interface.

This is basically the same code from NetBSD's /sys/dev/mii, except
it's been adapted to FreeBSD's bus architecture. The advantage to this
is that it automatically allows everything to be turned into a
loadable module. There are some common functions for use in drivers
once an miibus has been attached (mii_mediachg(), mii_pollstat(),
mii_tick()) as well as individual PHY drivers. There is also a
generic driver for all PHYs that aren't handled by a specific driver.
It's possible to do this because all 10/100 PHYs implement the same
general register set in addition to their vendor-specific register
sets, so for the most part you can use one driver for pretty much
any PHY. There are a couple of oddball exceptions though, hence
the need to have specific drivers.

There are two layers: the generic "miibus" layer and the PHY driver
layer. The drivers are child devices of "miibus" and the "miibus" is
a child of a given NIC driver. The "miibus" code and the PHY drivers
can actually be compiled and kldoaded as completely separate modules
or compiled together into one module. For the moment I'm using the
latter approach since the code is relatively small.

Currently there are only three PHY drivers here: the generic driver,
the built-in 3Com XL driver and the NS DP83840 driver. I'll be adding
others later as I convert various NIC drivers to use this code.

I realize that I'm cvs adding this stuff instead of importing it
onto a separate vendor branch, but in my opinion the import approach
doesn't really offer any significant advantage: I'm going to be
maintaining this stuff and writing my own PHY drivers one way or
the other.
1999-08-21 17:40:53 +00:00
Kirk McKusick
f9c8cab591 Add a vnode argument to VOP_BWRITE to get rid of the last vnode
operator special case. Delete special case code from vnode_if.sh,
vnode_if.src, umap_vnops.c, and null_vnops.c.
1999-06-16 23:27:55 +00:00
Bruce Evans
4adbda97dc Declare static __inline functions as __inline in their forward
declaration.

Fixed some comments.

Fixed a staticization botch.
1999-02-28 11:30:00 +00:00
Peter Wemm
4e61198e8f Make the vnode opv vector construction fully dynamic. Previously we
leaked memory on each unload and were limited to items referenced in
the kernel copy of vnode_if.c.  Now a kernel module is free to create
it's own VOP_FOO() routines and the rest of the system will happily
deal with it, including passthrough layers like union/umap/etc.

Have VFS_SET() call a common vfs_modevent() handler rather than
inline duplicating the common code all over the place.

Have VNODEOP_SET() have the vnodeops removed at unload time (assuming a
module) so that the vop_t ** vector is reclaimed.

Slightly adjust the vop_t ** vectors so that calling slot 0 is a panic
rather than a page fault.  This could happen if VOP_something() was called
without *any* handlers being present anywhere (including in vfs_default.c).
slot 1 becomes the default vector for the vnodeop table.

TODO: reclaim zones on unload (eg: nfs code)
1998-11-10 09:04:09 +00:00
Julian Elischer
fd5d1124e2 VOP_STRATEGY grows an (struct vnode *) argument
as the value in b_vp is often not really what you want.
(and needs to be frobbed). more cleanups will follow this.
Reviewed by: Bruce Evans <bde@freebsd.org>
1998-07-04 20:45:42 +00:00
Bruce Evans
214279cec9 Use __inline instead of inline to prevent pedantic compiler warnings. 1997-12-19 23:25:16 +00:00
Bruce Evans
55b211e3af Removed unused #includes. 1997-10-28 15:59:26 +00:00
Poul-Henning Kamp
bf1d104a34 3 lines of code and updates to a number of comments.
Reviewed by:	phk
Submitted by:	 Terry Lambert <tlambert@primenet.com>
1997-09-10 20:11:02 +00:00
Peter Wemm
6875d25465 Back out part 1 of the MCFH that changed $Id$ to $FreeBSD$. We are not
ready for it yet.
1997-02-22 09:48:43 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
Poul-Henning Kamp
f708ef1b9e Another mega commit to staticize things. 1995-12-14 09:55:16 +00:00
Bruce Evans
40560c4471 Don't #include vm stuff in vnode_if.[ch]. Enough vm stuff (a
single typedef) is now declared in <sys/types.h>.

This is the first of 4 commits that will remove some excessive
includes of vm*.h and user.h.  The total speed improvement isn't
as large as I first thought.  `make depend; make' for LINT only
improved from 2180 seconds to 2108 seconds user time.
1995-12-06 23:33:39 +00:00
Poul-Henning Kamp
a98ca4699e Second batch of cleanup changes.
This time mostly making a lot of things static and some unused
variables here and there.
1995-10-29 15:33:36 +00:00
Bruce Evans
5e3e8d2b88 Generate prototypes for VOP functions. I decided to keep the old-style
definitions even though the functions are inline.  If vnode_if.h was
compiled by a non-ANSI compiler, then `inline' would be defined away,
so vnode_if.h might compile correctly.
1995-09-11 16:05:16 +00:00
John Dyson
c83ebe7781 Added VOP_GETPAGES/VOP_PUTPAGES and also the "backwards" block count
for VOP_BMAP.  Updated affected filesystems...
1995-09-04 00:21:16 +00:00
David Greenman
4777741358 Removed my special-case hack for VOP_LINK and fixed the problem with the
wrong vp's ops vector being used by changing the VOP_LINK's argument order.
The special-case hack doesn't go far enough and breaks the generic
bypass routine used in some non-leaf filesystems. Pointed out by Kirk
McKusick.
1995-08-01 18:51:02 +00:00
David Greenman
083c109df6 The generated VCALL always uses the first vp which in the case of /link/
might not be handled by the same FS as the directory (e.g. special device
files)...so it must be special-cased. This bug is seen when doing
"ln /dev/console /dev/foo" or equivilent and first appeared after I fixed
the argument order of VOP_LINK.  YUCK! There really needs to be a way of
specifying what vp to use in the VCALL; doing this could fix the strategy
and bwrite special-cases, too.
1995-07-07 13:41:28 +00:00
David Greenman
3c4dd3568f Added $Id$ 1994-08-02 07:55:43 +00:00
Rodney W. Grimes
df8bae1de4 BSD 4.4 Lite Kernel Sources 1994-05-24 10:09:53 +00:00