Commit Graph

622 Commits

Author SHA1 Message Date
Jeff Roberson
da1c9cb2b5 - Remove wantparent, it is no longer necessary. An assert in vfs_lookup.c
prevents any callers from doing a modifying op without
   LOCKPARENT or WANTPARENT.
2005-03-29 13:09:42 +00:00
Jeff Roberson
6a8e9ba4fc - ext2fs_lookup() is no longer responsible for unlocking the dvp, this is
handled in vfs_lookup.c.  This code was missing PDIRUNLOCK use prior
   to the removal of PDIRUNLOCK in rev 1.73 of vfs_lookup.c.

Sponsored by:	Isilon Systems, Inc.
2005-03-28 09:38:20 +00:00
Jeff Roberson
a176ceb322 - Update vfs_root implementations to match the new prototype. None of
these filesystems will support shared locks until they are explicitly
   modified to do so.  Careful review must be done to ensure that this
   is safe for each individual filesystem.

Sponsored by:   Isilon Systems, Inc.
2005-03-24 07:39:03 +00:00
Poul-Henning Kamp
51f5ce0c8c Add two arguments to the vfs_hash() KPI so that filesystems which do
not have unique hashes (NFS) can also use it.
2005-03-16 11:20:51 +00:00
Poul-Henning Kamp
fd475cc19d Remove inode fields previously used for private inode hash tables. 2005-03-16 08:09:52 +00:00
Poul-Henning Kamp
6992367999 Don't hold a reference to the disk vnode for each inode.
Don't store the disk cdev in all inodes, it's only used for debugging
printfs.
2005-03-16 07:13:09 +00:00
Poul-Henning Kamp
45c26fa2b6 Improve the vfs_hash() API: vput() the unneeded vnode centrally to
avoid replicating the vput in all the filesystems.
2005-03-15 20:00:03 +00:00
Poul-Henning Kamp
e82ef95c11 Simplify the vfs_hash calling convention. 2005-03-15 08:07:07 +00:00
Poul-Henning Kamp
57dafdf543 Forgot cvs rm in last file. 2005-03-14 13:30:45 +00:00
Poul-Henning Kamp
9236b51d40 Use vfs_hash() instead of home-rolled 2005-03-14 13:30:06 +00:00
Jeff Roberson
d10f4f44f8 - Catch up with ufs_inode 1.59, ffs_vfsops.c 1.280, and ufs_vnops.c 1.267.
Various changes to support new vgone() locking protocol.

Sponsored by:	Isilon Systems, Inc.
2005-03-13 12:13:55 +00:00
Poul-Henning Kamp
7ce296cf04 Remove debug printout of major/minor numbers, print name instead. 2005-02-27 21:16:26 +00:00
Sam Leffler
87ace10fd7 move ptr deref's to after null ptr checks
Noticed by:	Coverity Prevent analysis tool
2005-02-24 01:40:52 +00:00
Poul-Henning Kamp
5ece08f57a Make a SYSCTL_NODE static 2005-02-10 12:23:29 +00:00
Poul-Henning Kamp
a369f34d76 Make filesystems get rid of their own vnodes vnode_pager object in
VOP_RECLAIM().
2005-01-28 14:42:17 +00:00
Poul-Henning Kamp
d4eb29ba71 Remove unused argument to vrecycle() 2005-01-28 13:08:21 +00:00
Poul-Henning Kamp
84a6975215 Introduce and use g_vfs_close(). 2005-01-25 15:52:04 +00:00
Poul-Henning Kamp
625d4bc03a Create a vp->v_object in VFS_FHTOVP() if we want to be exportable
with NFS.

We are moving responsibility for creating the vnode_pager object into
the filesystems which own the vnode, and this is one of the places
we have to cover.

We call vnode_create_vobject() directly because we own the vnode.

If we can get the size easily, pass it as an argument to save the
call to VOP_GETATTR() in vnode_create_vobject()
2005-01-24 21:51:19 +00:00
Poul-Henning Kamp
94cd47b1ac Remove unused cred argument to ext2_reload() 2005-01-24 13:31:22 +00:00
Poul-Henning Kamp
7c0745eeae Eliminate unused and unnecessary "cred" argument from vinvalbuf() 2005-01-14 07:33:51 +00:00
Poul-Henning Kamp
0391e5a151 Wrap the bufobj operations in macros: BO_STRATEGY() and BO_WRITE() 2005-01-11 09:10:46 +00:00
Poul-Henning Kamp
8df6bac4c7 Remove the unused credential argument from VOP_FSYNC() and VFS_SYNC().
I'm not sure why a credential was added to these in the first place, it is
not used anywhere and it doesn't make much sense:

	The credentials for syncing a file (ability to write to the
	file) should be checked at the system call level.

	Credentials for syncing one or more filesystems ("none")
	should be checked at the system call level as well.

	If the filesystem implementation needs a particular credential
	to carry out the syncing it would logically have to the
	cached mount credential, or a credential cached along with
	any delayed write data.

Discussed with:	rwatson
2005-01-11 07:36:22 +00:00
Warner Losh
fa521b0366 /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 18:27:30 +00:00
Warner Losh
aab95e5580 Add dol FreeBSD dol and /*+ize license 2005-01-06 18:27:09 +00:00
Poul-Henning Kamp
59d42685ad Implement simpler panics for VOP_{read,write} on fifos. 2004-12-14 21:30:45 +00:00
Marcel Moolenaar
237445c866 Revert previous commit. The null-pointer function call (a dereference
on ia64) was not the result of a change in the vector operations. It
was caused by the NFS locking code using a FIFO and those bypassing
the vnode. This indirectly caused the panic. The NFS locking code has
been changed.

Requested by: phk
2004-12-11 21:33:35 +00:00
Poul-Henning Kamp
05af0310f2 Convert to nmount. Add omount compat code. 2004-12-06 20:34:32 +00:00
Poul-Henning Kamp
743312367a VFS_STATFS(mp, ...) is mostly called with &mp->mnt_stat, but a few cases
doesn't.  Most of the implementations have grown weeds for this so they
copy some fields from mnt_stat if the passed argument isn't that.

Fix this the cleaner way:  Always call the implementation on mnt_stat
and copy that in toto to the VFS_STATFS argument if different.
2004-12-05 22:41:02 +00:00
Marcel Moolenaar
061f5ec825 Fix null-pointer indirect function calls introduced in the previous
commit. In the new world order, the transitive closure on the vector
operations is not precomputed. As such, it's unsafe to actually use
any of the function pointers in an indirect function call. They can
be null, and we need to use the default vector in that case.
This is mostly a quick fix for the four function pointers that are
ed explicitly. A more generic or scalable solution is likely to see
the light of day.

No pathos on: current@
2004-12-05 22:30:28 +00:00
Poul-Henning Kamp
b686377eee Remove #if 0'ed rootfs mounting code. 2004-12-04 09:58:20 +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
6fde64c778 Mechanically change prototypes for vnode operations to use the new typedefs. 2004-12-01 12:24:41 +00:00
Poul-Henning Kamp
9c83534dd8 Make VOP_BMAP return a struct bufobj for the underlying storage device
instead of a vnode for it.

The vnode_pager does not and should not have any interest in what
the filesystem uses for backend.

(vfs_cluster doesn't use the backing store argument.)
2004-11-15 09:18:27 +00:00
Poul-Henning Kamp
d4cfa2b5e3 Get even closer to not crashing ext2fs 2004-11-06 18:24:33 +00:00
Poul-Henning Kamp
057b5a5e38 Get closer to unbreaking ext2fs 2004-11-06 18:18:58 +00:00
Poul-Henning Kamp
5349c79d75 Properly implement a default version of VOP_GETWRITEMOUNT.
Remove improper access to vop_stdgetwritemount() which should and
will instead rely on the VOP default path.
2004-11-06 11:41:22 +00:00
Poul-Henning Kamp
48b67bb7fd Move EXT2FS to GEOM backing instead of DEVFS.
For details, please see src/sys/ufs/ffs/ffs_vfsops.c 1.250.
2004-10-29 10:42:30 +00:00
Poul-Henning Kamp
f00f5d71c2 Reduce the locking activity by epsilon by checking VNON condition before
releasing the mountlock.
2004-10-28 08:22:11 +00:00
Poul-Henning Kamp
d83b7498a4 Eliminate unnecessary KASSERTs.
Don't use bp->b_vp in VOP_STRATEGY: the vnode is passed in as an argument.
2004-10-27 06:48:21 +00:00
Poul-Henning Kamp
156cb26583 Loose the v_dirty* and v_clean* alias macros.
Check the count field where we just want to know the full/empty state,
rather than using TAILQ_EMPTY() or TAILQ_FIRST().
2004-10-25 09:14:03 +00:00
Poul-Henning Kamp
b792bebeea Move the buffer method vector (buf->b_op) to the bufobj.
Extend it with a strategy method.

Add bufstrategy() which do the usual VOP_SPECSTRATEGY/VOP_STRATEGY
song and dance.

Rename ibwrite to bufwrite().

Move the two NFS buf_ops to more sensible places, add bufstrategy
to them.

Add inlines for bwrite() and bstrategy() which calls through
buf->b_bufobj->b_ops->b_{write,strategy}().

Replace almost all VOP_STRATEGY()/VOP_SPECSTRATEGY() calls with bstrategy().
2004-10-24 20:03:41 +00:00
Poul-Henning Kamp
494eb176e7 Add b_bufobj to struct buf which eventually will eliminate the need for b_vp.
Initialize b_bufobj for all buffers.

Make incore() and gbincore() take a bufobj instead of a vnode.

Make inmem() local to vfs_bio.c

Change a lot of VI_[UN]LOCK(bp->b_vp) to BO_[UN]LOCK(bp->b_bufobj)
also VI_MTX() to BO_MTX(),

Make buf_vlist_add() take a bufobj instead of a vnode.

Eliminate other uses of bp->b_vp where bp->b_bufobj will do.

Various minor polishing: remove "register", turn panic into KASSERT,
use new function declarations, TAILQ_FOREACH_SAFE() etc.
2004-10-22 08:47:20 +00:00
Poul-Henning Kamp
87d451b95e Desupport device nodes on EXT2 filesystems. 2004-09-27 20:38:46 +00:00
Poul-Henning Kamp
961da2716b Give cluster_write() an explicit vnode argument.
In the future a struct buf will not automatically point out a vnode for us.
2004-09-27 19:14:10 +00:00
Poul-Henning Kamp
1affa3adc8 Create simple function init_va_filerev() for initializing a va_filerev
field.

Replace three instances of longhaired initialization va_filerev fields.

Added XXX comment wondering why we don't use random bits instead of
uptime of the system for this purpose.
2004-09-07 09:17:05 +00:00
John-Mark Gurney
ad3b9257c2 Add locking to the kqueue subsystem. This also makes the kqueue subsystem
a more complete subsystem, and removes the knowlege of how things are
implemented from the drivers.  Include locking around filter ops, so a
module like aio will know when not to be unloaded if there are outstanding
knotes using it's filter ops.

Currently, it uses the MTX_DUPOK even though it is not always safe to
aquire duplicate locks.  Witness currently doesn't support the ability
to discover if a dup lock is ok (in some cases).

Reviewed by:	green, rwatson (both earlier versions)
2004-08-15 06:24:42 +00:00
Poul-Henning Kamp
5e8c582ac2 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
Poul-Henning Kamp
d634f69316 Remove global variable rootdevs and rootvp, they are unused as such.
Add local rootvp variables as needed.

Remove checks for miniroot's in the swappartition.  We never did that
and most of the filesystems could never be used for that, but it had
still been copy&pasted all over the place.
2004-07-28 20:21:04 +00:00
Colin Percival
56f21b9d74 Rename suser_cred()'s PRISON_ROOT flag to SUSER_ALLOWJAIL. This is
somewhat clearer, but more importantly allows for a consistent naming
scheme for suser_cred flags.

The old name is still defined, but will be removed in a few days (unless I
hear any complaints...)

Discussed with:	rwatson, scottl
Requested by:	jhb
2004-07-26 07:24:04 +00:00
Alfred Perlstein
f257b7a54b Make VFS_ROOT() and vflush() take a thread argument.
This is to allow filesystems to decide based on the passed thread
which vnode to return.
Several filesystems used curthread, they now use the passed thread.
2004-07-12 08:14:09 +00:00