Commit Graph

39 Commits

Author SHA1 Message Date
wrstuden 9866514df5 Introduce layer library in genfs. This set of files abstracts most of
the functionality of nullfs. The latter is now just a mount & unmount
routine, and a few tables. umapfs borrow most of this infrastructure.

Both fs's are now nfs-exportable.

All layered fs's share a common format to private mount & private
vnode structs (which a particular fs can extend).

Also add genfs_noerr_rele(), a vnode op which will vrele/vput
operand vnodes appropriately.
1999-07-08 01:18:59 +00:00
wrstuden 636995172d Make message about not loking a vnode in nullfs_create a little quieter -
now only enabled if NULLFS_DIAGNOSTIC and no longer if DEBUG or DIAGNOSTIC.
1999-04-09 17:27:38 +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 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 c7fc6c74ca Oops. That extra "*" doesn't need to be there. 1999-01-15 22:04:44 +00:00
wrstuden 872d72e705 In nullfs_mount, we need to check if error before VOP_UNLOCK(vp,0) as
vp is initialized iff error==0 in null_node_create.
1999-01-13 01:51:37 +00:00
jonathan fcf7a78c02 Workaropund fix for PR #5239 from <minoura@kw.netlaputa.ne.jp>:
stop  null_node_create() from locking the nullfs mountpoint  multiple
  times. Avoids a guaranteed, repeatably "locking against myself" panic
  during mount of a nullfs filesystem.  nullfs filesystems are still as
  buggy as ever (e.g., see PR# 4907) but this you at least mount them.
1998-09-30 06:50:10 +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
fvdl f75b1046d4 Fix flags mess-up in vget. LK_EXCLUSIVE -> 0 (even indicated in the
comment, d'oh!)
1998-03-11 15:52:02 +00:00
fvdl e5bc90f40c Merge with Lite2 + local changes 1998-03-01 02:20:01 +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
chs f64abc7b4c add flags arg to hashinit(), to pass to malloc(). 1998-02-07 02:44:44 +00:00
thorpej c9efd0562e Make the vfs ops and vnodeop_opv symbols match the name of the
file-system option used to configure the file system into the kernel.
1997-10-06 09:32:31 +00:00
christos 4fb8bf7262 PR/4098: Alan Barrett: Fix diagnostic printf formatting. 1997-09-10 13:44:20 +00:00
pk 80bb266e0e NULL => 0 (Arne Juul; PR#3629) 1997-05-17 20:31:15 +00:00
cgd 89a4d9a733 don't try to use __builtin_return_address() on the Alpha. (It's never
worked as far as I can tell, and apparently crashes the kernel when
invoked here.)  From Ross Harvey, PR#3471.
1997-04-10 05:35:08 +00:00
mikel 812eb1fae4 this is nullfs, not lofs 1997-03-11 03:54:29 +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
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
gwr 316f45753f Allow the DIAGNOSTIC to compile with old versions of gcc. 1996-05-17 20:53:11 +00:00
jtk c9c8daaf7c Add locking code to avoid deadlocks on vnode reclaim, which means the
addition of null_lookup, null_lock, null_unlock, null_islocked.
1996-05-10 22:50:45 +00:00
cgd 7e4d04910d fix screw-up in the prototyping changes: print pointers with %p, NOT
by casting them to (unsigned int) then printing with %x.
1996-04-13 01:34:06 +00:00
christos 631ccba638 miscfs prototype changes 1996-02-09 22:39:56 +00:00
cgd 8f62c773e8 don't assume the f_fsnamelen is nul-truncated or longer than MFSNAMELEN 1995-06-18 14:45:14 +00:00
briggs 6efcd1b6d4 KERNEL -> _KERNEL 1995-03-29 21:57:43 +00:00
mycroft 2f805fa51b copy*str() should use size_t. 1995-03-09 12:05:21 +00:00
cgd aac6b08302 use u_long for copyin* 1995-03-08 01:33:20 +00:00
cgd 800be68af6 return EOPNOTSUPP from fhtovp and vptofh functions; doing otherwise
correctly is not possible.
1995-01-25 14:50:48 +00:00
mycroft e9017fd132 Clean up the code to frob mnt_stat a (tiny) bit. 1995-01-18 09:34:24 +00:00
mycroft 814ba0fc30 Call foo_statfs() from a common place when mounting. 1994-12-15 20:00:14 +00:00
cgd a3e9e8091b fix device aliasing and lost vnode problems. 1994-09-20 06:43:00 +00:00
mycroft cab4d25c24 stat the file system at mount time, for `df -n', et al. 1994-09-15 03:42:37 +00:00
mycroft 537ac5465f Convert hash tables. 1994-08-19 11:25:29 +00:00
mycroft 6436952bbc Fix a null pointer dereference during rename(2). 1994-07-20 07:37:25 +00:00
cgd cf92afd66e New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD' 1994-06-29 06:29:24 +00:00
mycroft cde1d47595 Update to 4.4-Lite fs code, with local changes. 1994-06-08 11:33:09 +00:00