Commit Graph

65 Commits

Author SHA1 Message Date
Poul-Henning Kamp
7652131bee Initialize struct vfsops C99-sparsely.
Submitted by:   hmp
Reviewed by:	phk
2003-06-12 20:48:38 +00:00
David E. O'Brien
677b542ea2 Use __FBSDID(). 2003-06-11 00:56:59 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Maxime Henrion
2853bfa0df We don't need to check the return value of malloc() against
NULL when the M_WAITOK flag is specified.
2002-06-22 21:44:11 +00:00
Tom Rhodes
d394511de3 More s/file system/filesystem/g 2002-05-16 21:28:32 +00:00
Matthew Dillon
e6728403d4 These are Alexander Kabaev's VFSops fixes (see the thread 'Found: module
loading breakage').  The patch fixes serious issues with the VFS
operations vector array which results in a crash when a filesystem module
adding a new VOP is loaded into the kernel.  Basically what was happening
before was that the old operations vector was being freed and a new one
allocated.  The original MALLOC code tended to reuse the same address
for the case and so the bug did not rear its ugly head until the new memory
subsystem was emplaced.

This patch replaces the temporary workaround Dave O'Brien comitted in 1.58.

The patch is clean enough that I intend to MFC it to stable at some point.

Submitted by:	Alexander Kabaev <ak03@gte.com>
MFC after:	1 week
2002-04-30 18:44:32 +00:00
David E. O'Brien
0beb3ecc6c Commit work-around for panics when mounting FS's that are auto-loaded as
modules (ie. procfs.ko).

When the kernel loads dynamic filesystem module, it looks for any of the
VOP operations specified by the new filesystem that have not been registered
already by the currently known filesystems.  If any of such operations exist,
vfs_add_vnops function calls vfs_opv_recalc function, which rebuilds vop_t
vectors for each filesystem and sets all global pointers like ufs_vnops_p,
devfs_specop_p, etc to the new values and then frees the old pointers.  This
behavior is bad because there might be already active vnodes whose v_op fields
will be left pointing to the random garbage, leading to inevitable crash soon.

Submitted by:	Alexander Kabaev <ak03@gte.com>
2002-03-25 21:30:50 +00:00
Jeff Roberson
c897b81311 Remove references to vm_zone.h and switch over to the new uma API.
Also, remove maxsockets.  If you look carefully you'll notice that the old
zone allocator never honored this anyway.
2002-03-20 04:09:59 +00:00
Eivind Eklund
eb8e6d5276 Document all functions, global and static variables, and sysctls.
Includes some minor whitespace changes, and re-ordering to be able to document
properly (e.g, grouping of variables and the SYSCTL macro calls for them, where
the documentation has been added.)

Reviewed by:	phk (but all errors are mine)
2002-03-05 15:38:49 +00:00
Greg Lehey
60fb0ce365 Revert consequences of changes to mount.h, part 2.
Requested by:	bde
2001-04-29 02:45:39 +00:00
Greg Lehey
d98dc34f52 Correct #includes to work with fixed sys/mount.h. 2001-04-23 09:05:15 +00:00
Poul-Henning Kamp
37d4006626 Another round of the <sys/queue.h> FOREACH transmogriffer.
Created with:   sed(1)
Reviewed by:    md5(1)
2001-02-04 16:08:18 +00:00
David Malone
7cc0979fd6 Convert more malloc+bzero to malloc+M_ZERO.
Submitted by:	josh@zipperup.org
Submitted by:	Robert Drehmel <robd@gmx.net>
2000-12-08 21:51:06 +00:00
Peter Wemm
138e514cb5 Untangle vfsinit() a bit. Use seperate sysinit functions rather than
having a super-function calling bits all over the place.
2000-12-06 07:09:08 +00:00
Peter Wemm
fc611b0634 Do not panic on an uninitialized VOP_xxx() call. This was meant as a
sanity check, but it is too easy to run into, eg: making an ACL syscall
when no filesystems have the ACL implementation enabled.

The original reason for the panic was that the VOP_ vector had not been
assigned and therefor could not be passed down the stack.. and there
was no point passing it down since nothing implemented it anyway.
vop_defaultop entries could not pass it on because it had a zero (unknown)
vector that was indistinguishable from another unknown VOP vector.

Anyway, we can do something reasonable in this case, we shouldn't need
to panic here as there is a reasonable recovery option (return EOPNOTSUPP
and dont pass it down the stack).

Requested by: rwatson
2000-09-06 17:51:54 +00:00
Peter Wemm
016fc47da3 The sysctl mod_xx hack is no longer required now that we have totally
dynamic sysctl registration.
1999-12-12 16:30:34 +00:00
Mike Smith
b676e48c98 Move a couple of globals here where they are initialised, rather than
orphaning them in vfs_conf.c
1999-11-01 23:54:07 +00:00
Peter Wemm
c3aac50f28 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
Bruce Evans
992fd07673 Removed references to a nonexistent variable. This fixes building kernels
without -O.
1999-07-29 07:14:28 +00:00
Doug Rabson
a199ed3cc3 * Register sysctl nodes before running sysinits when loading files and
unregister them after sysuninits when unloading.
* Add code to vfs_register() to set the oid number of vfs sysctls to
  the type number of the filesystem.

Reviewed by: bde
1999-03-07 16:06:41 +00:00
Doug Rabson
ce02431ffa * Change sysctl from using linker_set to construct its tree using SLISTs.
This makes it possible to change the sysctl tree at runtime.

* Change KLD to find and register any sysctl nodes contained in the loaded
  file and to unregister them when the file is unloaded.

Reviewed by: Archie Cobbs <archie@whistle.com>,
	Peter Wemm <peter@netplex.com.au> (well they looked at it anyway)
1999-02-16 10:49:55 +00:00
Matthew Dillon
697457a133 Fix warnings related to -Wall -Wcast-qual 1999-01-28 17:32:05 +00:00
Matthew Dillon
8aef171243 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-28 00:57:57 +00:00
Archie Cobbs
f1d19042b0 The "easy" fixes for compiling the kernel -Wunused: remove unreferenced static
and local variables, goto labels, and functions declared but not defined.
1998-12-07 21:58:50 +00:00
Bruce Evans
4ae860afde Fixed the type of vfs_modevent (a little late, to match the corresponding
change in sys/mount.h).
1998-11-15 15:18:30 +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
Peter Wemm
ee9d248c5f General tidy up: remove more unused code, update comments, simplify some
routines a little.
1998-11-04 03:18:10 +00:00
Poul-Henning Kamp
f5ef029e92 Nitpicking and dusting performed on a train. Removes trivial warnings
about unused variables, labels and other lint.
1998-10-25 17:44:59 +00:00
Bruce Evans
a6cda5b68f Fixed sysctl attachment for statically configured vfs's.
Broken in:		previous commit
1998-10-25 10:52:34 +00:00
Peter Wemm
aa855a598d *gulp*. Jordan specifically OK'ed this..
This is the bulk of the support for doing kld modules.  Two linker_sets
were replaced by SYSINIT()'s.  VFS's and exec handlers are self registered.
kld is now a superset of lkm.  I have converted most of them, they will
follow as a seperate commit as samples.
This all still works as a static a.out kernel using LKM's.
1998-10-16 03:55:01 +00:00
David E. O'Brien
efcddb8e39 Taking the GENERIC kernel and commenting out MSDOSFS, CD9660{,_ROOT}, PROCFS,
NFS_ROOT will produce kernel that cannot mount a UFS /.

Vfs type numbers must be distinct from VFS_GENERIC (and VFS_VFSCONF, but
that has the same value and should go away).

The problem happens because NFS is the first vfs (in sys/conf order) so it
gets type number 0 and conflicts harmfully with VFS_GENERIC which is also 0.
The conflict is apparently harmless in the usual case when another vfs
gets type number 0, because nfs is the only vfs that has sysctls.

Inital fix by:	Dima <dima@tejblum.dnttm.rssi.ru>
Reason why it worked by:	bde
1998-10-05 11:10:55 +00:00
Bruce Evans
e99ea9ec2b Ignore the statically configured vfs type numbers and assign vfs
type numbers in vfs attach order (modulo incomplete reuse of old
numbers after vfs LKMs are unloaded).  This requires reinitializing
the sysctl tree (or at least the vfs subtree) for vfs's that support
sysctls (currently only nfs).  sysctl_order() already handled
reinitialization reasonably except it checked for annulled self
references in the wrong place.

Fixed sysctls for vfs LKMs.
1998-09-05 17:13:28 +00:00
Eivind Eklund
303b270b0a Staticize. 1998-02-09 06:11:36 +00:00
Poul-Henning Kamp
1b09ae776d Simplify the lease_check stuff. 1997-10-26 20:26:33 +00:00
Poul-Henning Kamp
cec0f20ce7 VFS mega cleanup commit (x/N)
1.  Add new file "sys/kern/vfs_default.c" where default actions for
    VOPs go. Implement proper defaults for ABORTOP, BWRITE, LEASE,
    POLL, REVOKE and STRATEGY.  Various stuff spread over the entire
    tree belongs here.

2.  Change VOP_BLKATOFF to a normal function in cd9660.

3.  Kill VOP_BLKATOFF, VOP_TRUNCATE, VOP_VFREE, VOP_VALLOC.  These
    are private interface functions between UFS and the underlying
    storage manager layer (FFS/LFS/MFS/EXT2FS).  The functions now
    live in struct ufsmount instead.

4.  Remove a kludge of VOP_ functions in all filesystems, that did
    nothing but obscure the simplicity and break the expandability.
    If a filesystem doesn't implement VOP_FOO, it shouldn't have an
    entry for it in its vnops table.  The system will try to DTRT
    if it is not implemented.  There are still some cruft left, but
    the bulk of it is done.

5.  Fix another VCALL in vfs_cache.c (thanks Bruce!)
1997-10-16 10:50:27 +00:00
Poul-Henning Kamp
a1c995b626 Last major round (Unless Bruce thinks of somthing :-) of malloc changes.
Distribute all but the most fundamental malloc types.  This time I also
remembered the trick to making things static:  Put "static" in front of
them.

A couple of finer points by:	bde
1997-10-12 20:26:33 +00:00
John Dyson
99448ed11d Change the M_NAMEI allocations to use the zone allocator. This change
plus the previous changes to use the zone allocator decrease the useage
of malloc by half.  The Zone allocator will be upgradeable to be able
to use per CPU-pools, and has more intelligent usage of SPLs.  Additionally,
it has reasonable stats gathering capabilities, while making most calls
inline.
1997-09-21 04:24:27 +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
Bruce Evans
1fd0b0588f Removed unused #includes. 1997-08-02 14:33:27 +00:00
Bruce Evans
a896f0256c Moved vfs sysctls to where Lite2 put them. No code changes yet. 1997-03-02 11:06:22 +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
Bruce Evans
25ed2ac223 Changed #ifdef COMPAT_PRELITE2' to #ifndef NO_COMPAT_PRELITE2' so that
the old VFS_VFSCONF sysctl is enabled by default.

Initialize the vfc_vfsops field to non-NULL in sysctl_ovfs_conf()
so that the old VFS_VFSCONF sysctl actually works.  The old (still
current) getvfsent.c uses this "kernel-only" field to decide which
vfs's are configured (the old implementation returned null entries
for unconfigured vfs's).
1997-02-18 04:58:11 +00:00
John Dyson
996c772f58 This is the kernel Lite/2 commit. There are some requisite userland
changes, so don't expect to be able to run the kernel as-is (very well)
without the appropriate Lite/2 userland changes.

The system boots and can mount UFS filesystems.

Untested: ext2fs, msdosfs, NFS
Known problems: Incorrect Berkeley ID strings in some files.
		Mount_std mounts will not work until the getfsent
		library routine is changed.

Reviewed by:	various people
Submitted by:	Jeffery Hsu <hsu@freebsd.org>
1997-02-10 02:22:35 +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
Jeffrey Hsu
04d41bbeb7 From Lite2: rename fs to vfs.
Reviewed by:	davidg & bde
1996-03-11 02:18:23 +00:00
Poul-Henning Kamp
27a0b398a7 Staticize.
Unstaticize a function in scsi/scsi_base that was used, with an undocumented
option.
My last count on the LINT kernel shows:
Total symbols:  3647
unref symbols:   463
undef symbols:     4
1 ref symbols:  1751
2 ref symbols:   485
Approaching the pain threshold now.
1995-12-17 21:23:44 +00:00
Poul-Henning Kamp
946bb7a268 A major sweep over the sysctl stuff.
Move a lot of variables home to their own code (In good time before xmas :-)

Introduce the string descrition of format.

Add a couple more functions to poke into these marvels, while I try to
decide what the correct interface should look like.

Next is adding vars on the fly, and sysctl looking at them too.

Removed a tine bit of defunct and #ifdefed notused code in swapgeneric.
1995-12-04 16:48:58 +00:00
Bruce Evans
fb98064487 Oops, the last commit left a redundant declaration. 1995-12-03 18:00:35 +00:00
Bruce Evans
98d938220c Completed function declarations and/or added prototypes. 1995-12-02 18:58:56 +00:00