Commit Graph

15 Commits

Author SHA1 Message Date
Zack Kirsch
98f234f338 Simple find/replace of vn_lock -> NFSVOPLOCK. This is done so that NFSVOPLOCK can be modified later to add enhanced logging and assertions.
Reviewed by:    rmacklem
Approved by:    zml (mentor)
MFC after:      2 weeks
2011-07-16 08:05:31 +00:00
Zack Kirsch
51c099f522 Change loadattr and fillattr to ask the file system for the pathconf variable.
Small modification where VOP_PATHCONF was being called directly.

Reviewed by:    rmacklem
Approved by:    zml (mentor)
MFC after:      2 weeks
2011-07-16 08:05:21 +00:00
Zack Kirsch
b008a72c86 Small acl patch to return the aclerror that comes back from nfsrv_dissectacl(). This fixes a problem where ATTRNOTSUPP was being returned instead of BADOWNER.
Reviewed by:    rmacklem
Approved by:    zml (mentor)
MFC after:      2 weeks
2011-07-16 08:04:57 +00:00
Rick Macklem
ff29f3b241 Fix the new NFS client so that it handles NFSv4 state
correctly during a forced dismount. This required that
the exclusive and shared (refcnt) sleep lock functions check
for MNTK_UMOUNTF before sleeping, so that they won't block
while nfscl_umount() is getting rid of the state. As
such, a "struct mount *" argument was added to the locking
functions. I believe the only remaining case where a forced
dismount can get hung in the kernel is when a thread is
already attempting to do a TCP connect to a dead server
when the krpc client structure called nr_client is NULL.
This will only happen just after a "mount -u" with options
that force a new TCP connection is done, so it shouldn't
be a problem in practice.

MFC after:	2 weeks
2011-05-27 22:05:10 +00:00
Rick Macklem
a09001a82b Fix the experimental NFSv4 server so that it uses VOP_PATHCONF()
to determine if a file system supports NFSv4 ACLs. Since
VOP_PATHCONF() must be called with a locked vnode, the function
is called before nfsvno_fillattr() and the result is passed in
as an extra argument.

MFC after:	2 weeks
2011-04-14 23:46:15 +00:00
Rick Macklem
07c0c166e4 Modify the experimental NFSv4 server so that it handles
crossing of server mount points properly. The functions
nfsvno_fillattr() and nfsv4_fillattr() were modified to
take the extra arguments that are the mount point, a flag
to indicate that it is a file system root and the mounted
on fileno. The mount point argument needs to be busy when
nfsvno_fillattr() is called, since the vp argument is not
locked.

Reviewed by:	kib
MFC after:	2 weeks
2011-04-14 21:49:52 +00:00
Rick Macklem
8207db3ec3 Fix the experimental NFSv4 server so that it uses VOP_ACCESSX()
to check for VREAD_ACL instead of VOP_ACCESS().

MFC after:	3 days
2011-01-18 14:34:45 +00:00
Rick Macklem
5a12538bd7 Add support for shared vnode locks for the Read operation
in the experimental NFSv4 server.

Reviewed by:	kib
MFC after:	2 weeks
2011-01-01 18:50:49 +00:00
Rick Macklem
17891d0082 Modify the experimental NFS server so that it uses LK_SHARED
for RPC operations when it can. Since VFS_FHTOVP() currently
always gets an exclusively locked vnode and is usually called
at the beginning of each RPC, the RPCs for a given vnode will
still be serialized. As such, passing a lock type argument to
VFS_FHTOVP() would be preferable to doing the vn_lock() with
LK_DOWNGRADE after the VFS_FHTOVP() call.

Reviewed by:	kib
MFC after:	2 weeks
2010-12-25 21:56:25 +00:00
Rick Macklem
2ec3f92528 The timer routine in the experimental NFS server did not acquire
the correct mutex when checking nfsv4root_lock. Although this
could be fixed by adding mutex lock/unlock calls, zack.kirsch at
isilon.com suggested a better fix that uses a non-blocking
acquisition of a reference count on nfsv4root_lock. This fix
allows the weird NFSLOCKSTATE(); NFSUNLOCKSTATE(); synchronization
to be deleted. This patch applies this fix.

Tested by:	zack.kirsch at isilon.com
MFC after:	2 weeks
2010-08-28 21:41:18 +00:00
Rick Macklem
a43fcbe34d This patch should fix handling of byte range locks locally
on the server for the experimental nfs server. When enabled
by setting vfs.newnfs.locallocks_enable to non-zero, the
experimental nfs server will now acquire byte range locks
on the file on behalf of NFSv4 clients, such that lock
conflicts between the NFSv4 clients and processes running
locally on the server, will be recognized and handled correctly.

MFC after:	2 weeks
2010-03-30 23:11:50 +00:00
Edward Tomasz Napierala
74991298d9 Remove unneeded ifdefs.
Reviewed by:	rmacklem
2009-12-03 18:03:42 +00:00
Rick Macklem
c3e22f831f Fix the experimental nfs subsystem so that it builds with the
current NFSv4 ACLs, as defined in sys/acl.h. It still needs a
way to test a mount point for NFSv4 ACL support before it will
work. Until then, the NFSHASNFS4ACL() macro just always returns 0.

Approved by:	kib (mentor)
2009-05-26 22:21:53 +00:00
Attilio Rao
dfd233edd5 Remove the thread argument from the FSD (File-System Dependent) parts of
the VFS.  Now all the VFS_* functions and relating parts don't want the
context as long as it always refers to curthread.

In some points, in particular when dealing with VOPs and functions living
in the same namespace (eg. vflush) which still need to be converted,
pass curthread explicitly in order to retain the old behaviour.
Such loose ends will be fixed ASAP.

While here fix a bug: now, UFS_EXTATTR can be compiled alone without the
UFS_EXTATTR_AUTOSTART option.

VFS KPI is heavilly changed by this commit so thirdy parts modules needs
to be recompiled.  Bump __FreeBSD_version in order to signal such
situation.
2009-05-11 15:33:26 +00:00
Rick Macklem
9ec7b004d0 Add the experimental nfs subtree to the kernel, that includes
support for NFSv4 as well as NFSv2 and 3.
	It lives in 3 subdirs under sys/fs:
	nfs - functions that are common to the client and server
	nfsclient - a mutation of sys/nfsclient that call generic functions
	to do RPCs and handle state. As such, it retains the
	buffer cache handling characteristics and vnode semantics that
	are found in sys/nfsclient, for the most part.
	nfsserver - the server. It includes a DRC designed specifically for
	NFSv4, that is used instead of the generic DRC in sys/rpc.
	The build glue will be checked in later, so at this point, it
	consists of 3 new subdirs that should not affect kernel building.

Approved by:	kib (mentor)
2009-05-04 15:23:58 +00:00