Commit Graph

73 Commits

Author SHA1 Message Date
phk
43f0dbec3c Simplify initialization of va_null a little bit. 2004-09-15 21:42:03 +00:00
phk
2d868d02cf Put a version element in the VFS filesystem configuration structure
and refuse initializing filesystems with a wrong version.  This will
aid maintenance activites on the 5-stable branch.

s/vfs_mount/vfs_omount/

s/vfs_nmount/vfs_mount/

Name our filesystems mount function consistently.

Eliminate the namiedata argument to both vfs_mount and vfs_omount.
It was originally there to save stack space.  A few places abused
it to get hold of some credentials to pass around.  Effectively
it is unused.

Reorganize the root filesystem selection code.
2004-07-30 22:08:52 +00:00
phk
8c9258b82e Convert the vfsconf list to a TAILQ.
Introduce vfs_byname() function to find things on it.

Staticize vfs_nmount() function under the name vfs_donmount().

Various cleanups.
2004-07-27 22:32:01 +00:00
phk
5c95d686a1 Do a pass over all modules in the kernel and make them return EOPNOTSUPP
for unknown events.

A number of modules return EINVAL in this instance, and I have left
those alone for now and instead taught MOD_QUIESCE to accept this
as "didn't do anything".
2004-07-15 08:26:07 +00:00
alfred
edeee1cf4e do the vfsstd thing instead of messing up our VFS_SYSCTL macro. 2004-07-07 06:58:29 +00:00
imp
74cf37bd00 Remove advertising clause from University of California Regent's license,
per letter dated July 22, 1999.

Approved by: core
2004-04-05 21:03:37 +00:00
cperciva
d2e6533b8d Remove opv_desc_vector from vfs_add_vnodeops, since it is defined
and given a value, but never used.  This has no effect on the
resulting binaries, since gcc optimizes the variable away anyway.

PR:		kern/62684
Approved by:	rwatson (mentor)
2004-02-15 17:27:33 +00:00
silby
f0e686a675 Change all SYSCTLS which are readonly and have a related TUNABLE
from CTLFLAG_RD to CTLFLAG_RDTUN so that sysctl(8) can provide
more useful error messages.
2003-10-21 18:28:36 +00:00
phk
fd139fd7d0 Initialize struct vfsops C99-sparsely.
Submitted by:   hmp
Reviewed by:	phk
2003-06-12 20:48:38 +00:00
obrien
3b8fff9e4c Use __FBSDID(). 2003-06-11 00:56:59 +00:00
imp
cf874b345d Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
alfred
bf8e8a6e8f 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
mux
df8395282d 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
trhodes
28d42899b7 More s/file system/filesystem/g 2002-05-16 21:28:32 +00:00
dillon
8468513da0 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
obrien
1e153b6d04 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
318cbeeecf 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
05c20bbea2 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
grog
4b9d9cbaac Revert consequences of changes to mount.h, part 2.
Requested by:	bde
2001-04-29 02:45:39 +00:00
grog
1f5de30718 Correct #includes to work with fixed sys/mount.h. 2001-04-23 09:05:15 +00:00
phk
709379c1ae 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
dwmalone
dd75d1d73b 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
eb5dd3d06e 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
526b3ccc0d 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
88b35ea77b 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
msmith
fd0aded94f 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
3b842d34e8 $Id$ -> $FreeBSD$ 1999-08-28 01:08:13 +00:00
bde
e0dd4f4f32 Removed references to a nonexistent variable. This fixes building kernels
without -O.
1999-07-29 07:14:28 +00:00
dfr
e2549f2539 * 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
dfr
22ceb237f0 * 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
dillon
ca558df378 Fix warnings related to -Wall -Wcast-qual 1999-01-28 17:32:05 +00:00
dillon
975fba8a24 Fix warnings in preparation for adding -Wall -Wcast-qual to the
kernel compile
1999-01-28 00:57:57 +00:00
archie
60d13c7a9d 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
bde
5cb54abe05 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
e2cbb31311 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
0b2613691d General tidy up: remove more unused code, update comments, simplify some
routines a little.
1998-11-04 03:18:10 +00:00
phk
13c66194f4 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
bde
cccbefc35f Fixed sysctl attachment for statically configured vfs's.
Broken in:		previous commit
1998-10-25 10:52:34 +00:00
peter
464de37ce6 *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
obrien
18fd7ac357 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
bde
0f44756d5a 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
d7a6ab2803 Staticize. 1998-02-09 06:11:36 +00:00
phk
07d68f3e52 Simplify the lease_check stuff. 1997-10-26 20:26:33 +00:00
phk
d166441755 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
phk
36e7a51ea1 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
dyson
e64b1984f9 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
phk
a300d400e9 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
bde
9195bd1ec7 Removed unused #includes. 1997-08-02 14:33:27 +00:00
bde
6e31892943 Moved vfs sysctls to where Lite2 put them. No code changes yet. 1997-03-02 11:06:22 +00:00
peter
94b6d72794 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