Commit Graph

94 Commits

Author SHA1 Message Date
thorpej 7cc27a88c0 Convert namei pathname buffer allocation to use the pool allocator. 2000-08-03 20:41:05 +00:00
mrg 20515f2854 <vm/vm.h> -> <uvm/uvm_extern.h> 2000-06-28 02:44:06 +00:00
assar 6c734cd283 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.
2000-06-10 18:27:01 +00:00
thorpej 21fc65e1a8 sleep() -> tsleep() 2000-05-27 04:52:27 +00:00
augustss bd842961d4 Register, begone! 2000-03-30 12:22:12 +00:00
jdolecek 89015c4648 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.
2000-03-16 18:08:17 +00:00
wrstuden e682a080e9 In spec_close(), if we're not doing a non-blocking close and VXLOCK is
not set, unlock the vnode before calling the device's close routine and
relock it after it returns. tty close routines will sleep waiting for
buffers to drain, which won't happen often times as the other side needs
to grab the vnode lock first.

Make all unmount routines lock the device vnode before calling VOP_CLOSE().
1999-10-16 23:53:26 +00:00
sommerfeld d96e35f23c Fix PR4439: directory link count in unions where only upper directory
exists is bogus.  The goal here is to produce a synthetic link count
which won't confuse fts and similar routines which "know" that
directories with a link count of 2 don't have subdirectories (and
thus, they can avoid having to stat every entry in the directory
looking for subdirectories which aren't there).

We know that non-UNIX filesystem implementations may return a link
count of `1' for directories with an indeterminate number of
subdirectories; if either the upper or lower layer returns a link
count of `1', return a link count of 1.  If both layers return a link
count of 2, return a link count of 2; otherwise, return the sum of the
link count of both layers.

Also, fix PR7430: unionfs ignores read-only mounts.  Check for
MNT_RDONLY in union_lookup (more-or-less as in layer_lookup) as well
as union_access() and union_setattr().

Note that a read-only union layer may still cause side effects on the
underlying filesystems...  Most notably, we'll still attempt to create
shadow directories in the upper layer.  Also, of course, we'll
side-effect atimes in the lower layer.
1999-08-01 23:16:34 +00:00
sommerfeld cb448a064d Fix PR5146: reboot with working directory in unionfs causes
"panic: lockmgr: using decommisioned lock"
(only if DIAGNOSTIC)

The problem turned out to be due to the way LK_DRAIN was (not) handled
in union_lock; it just got passed through to the lock on the upper
vnode (which got marked as decommissioned, instead of that happening
to the union vnode.  When the upper vnode was next locked (typically
when it was released), it went kaboom.
1999-08-01 00:00:57 +00:00
sommerfeld 29469abdbd On forced unmount, do a few passes of non-forced cleanups and then do
a single forced pass.  Along for the ride with PR5146 fix.
1999-07-31 23:56:15 +00:00
wrstuden a0f2937049 Define VLAYER and make layered fs's set this flag when creating their vnodes.
getnewvnode now checks this bit, and it if's set makes sure a vnode's not
locked before removing it from the free list.

Closes PR 7954 by Alan Barrett <apb@iafrica.com>.
1999-07-15 21:30:31 +00:00
wrstuden 9fc36d6807 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.
1999-07-08 01:26:21 +00:00
perseant c951c272b0 Fixes PR #1206, by setting va_mode and va_flags in the copied-up vnode's
attributes.
1999-06-25 19:05:49 +00:00
thorpej e9d133eb3b Adjust for cwdinfo changes. Pointed out by Bernd Ernesti. 1999-05-02 00:18:31 +00:00
bouyer e045fbf363 We must handle MNT_NODEV at open time, so add an open op for null and union,
and do proper checks in union_open(). Fix to nullfs from OpenBSD, extended
to umap and union by me.
1999-03-25 13:05:41 +00:00
sommerfe b6c36d0fe4 fix union node lock to sleep on something it'll be woken on.. 1999-03-24 05:53:59 +00:00
mrg d2397ac5f7 completely remove Mach VM support. all that is left is the all the
header files as UVM still uses (most of) these.
1999-03-24 05:50:49 +00:00
sommerfe 36dc99adac vinvalbuf, called from vclean, could cause a locking-against-self
deadlock in VOP_FSYNC() if the unreferenced vnode picked for
reclamation happened to be stacked on top of a vnode the process
already had locked.  This could happen if the same filesystem was
accessed both through a union mount and directly; it seemed to happen
most frequently when the direct access was through NFS.

Avoid this deadlock by changing vinvalbuf to pass a new FSYNC_RECLAIM
flag bit to VOP_FSYNC() to indicate that a reclaim is in progress and
only a `shallow' fsync is necessary.

Do nothing in *_fsync() in umapfs, nullfs, and unionfs when
FSYNC_RECLAIM is set; the underlying vnodes will shortly be released
in *_reclaim and may be reclaimed (and fsync'ed) later.
1999-03-22 17:24:19 +00:00
wrstuden 862a56e88b 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.
1999-02-26 23:44:43 +00:00
wrstuden 0078fc50dc Modify VOP_CLOSE vnode op to always take a locked vnode. Change vn_close
to pass down a locked node. Modify union_copyup() to call VOP_CLOSE
locked nodes.

Also fix a bug in union_copyup() where a lock on the lower vnode would
only be released if VOP_OPEN didn't fail.
1999-02-26 23:38:55 +00:00
perry 4522c799a1 bzero->memset, bcopy->memcpy, bcmp->memcmp 1998-08-09 20:51:08 +00:00
cgd 651b44e211 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.
1998-06-12 23:22:30 +00:00
kleink 382743ada3 Convert fsync vnode operator implementations and usage from the old `waitfor'
argument and MNT_WAIT/MNT_NOWAIT to `flags' and FSYNC_WAIT.
1998-06-05 19:53:00 +00:00
veego dd9d3a3015 Fix an error introduced in rev 1.39 where jason fixed kern/5271:
s/vp/ap->a_vp/ in line 715.
1998-04-11 08:51:12 +00:00
thorpej 13eebaf27e Fix two problems in union_link():
(1) Fix a typo that caused a NULL pointer deref.
(2) union_copyup() locks the vnode, so unlock it before calling relookup().
PR #5272, MINOURA, Makoto <minoura@kw.netlaputa.ne.jp>.
1998-04-10 01:43:54 +00:00
thorpej 181995d5f7 Fix possible stray pointer deref in union_access, per PR #5271,
submitted by MINOURA, Makoto <minoura@kw.netlaputa.ne.jp>.
1998-04-10 01:39:45 +00:00
marc efbd14c45d mounting a union causes VOP_WHITEOUT to be called on the upper root
vn, with a 0 component.  If the upper fs was a unionfs,
union_whiteout() would deref compnent to get a struct proc, and panic.
struct proc was only being passed to FIXUP, which never used it.  It
turns out this happened a lot.  I ripped most of the unneeded code
out, and left in the few places that really did need the proc handle.
1998-03-17 08:36:57 +00:00
fvdl 7ba6a2daac Remove extraneous files from Lite2 merge. 1998-03-01 13:45:28 +00:00
fvdl e5bc90f40c Merge with Lite2 + local changes 1998-03-01 02:20:01 +00:00
fvdl e8d05f0741 Import 4.4BSD-Lite2 1998-03-01 02:12:49 +00:00
thorpej b5bf2ed6d0 Place a pointer to an array of our vnodeopv_desc *'s in our vfsops
structure, for use by vfs_attach().
1998-02-18 07:05:47 +00:00
mrg d90485202c - add defopt's for UVM, UVMHIST and PMAP_NEW.
- remove unnecessary UVMHIST_DECL's.
1998-02-10 14:08:44 +00:00
mrg 1a8c7604f4 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.  :-)
1998-02-05 07:59:28 +00:00
fvdl ce56587f15 Bump last argument to VOP_READDIR to off_t (from u_long). 1997-10-10 02:01:05 +00:00
christos 4fb8bf7262 PR/4098: Alan Barrett: Fix diagnostic printf formatting. 1997-09-10 13:44:20 +00:00
drochner aa015962db Since there is a "%qx" printf format, don't truncate to long for
debug output.
1997-07-04 19:22:48 +00:00
mycroft 0f09f99ae1 Need stat.h. 1997-05-05 07:19:05 +00:00
mycroft 1e3c14a909 Eliminate bogus uses of V{READ,WRITE,EXEC}. Use S_I[RWX]{USR,GRP,OTH} where
appropriate.
1997-05-05 07:13:57 +00:00
cgd 90688fce27 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...
1996-12-22 10:10:12 +00:00
pk 3127b0c5e2 Fix short malloc & memory leak in union_relookup() (per Naofumi Honda; PR#3000). 1996-12-07 11:02:47 +00:00
cgd a67c0b16b8 define path name string variables that we should not (and, thankfully, do
not) modify as 'const char *' rather 'char *'.
1996-10-25 21:57:58 +00:00
christos 92a808f167 backout previous kprintf changes 1996-10-13 02:21:25 +00:00
christos 60d201973e printf -> kprintf, sprintf -> ksprintf 1996-10-10 22:46:11 +00:00
mycroft 2bc736661a Implement poll(2). 1996-09-07 12:40:22 +00:00
mycroft c52352c819 Add a set of generic file system operations that most file systems use.
Also, fix some time stamp bogosities.
1996-09-01 23:47:48 +00:00
cgd f7f3f4299d print pointers with %p, rather than by printing with %x and casting to
(unsigned int).
1996-05-23 23:34:14 +00:00
mrg d0f2ced7d2 use %p not %x for pointers 1996-05-13 07:13:23 +00:00
jtk 6ddae4d140 Implement proper `..' locking in lookup code to avoid many potential
deadlocks.

copy up properly when adding a link to lower-layer only file.
(I believe there are still more deadlocks remaining.)
1996-05-10 22:57:49 +00:00
mycroft 183aec8fa8 GC *_nullop(). Minor nits. 1996-02-13 13:12:48 +00:00
christos 631ccba638 miscfs prototype changes 1996-02-09 22:39:56 +00:00