Commit Graph

2281 Commits

Author SHA1 Message Date
Rick Macklem
2fa32154e4 Fix nfscl_getcl() so that it doesn't crash when it is called to
do an NFSv4 Close operation with the cred argument NULL. Also,
clarify what NULL arguments mean in the function's comment.

Approved by:	kib (mentor)
2009-06-08 18:41:23 +00:00
Robert Watson
dde155e95a Use #ifdef APPLE_MAC instead of #ifdef MAC to conditionalize Apple-specific
behavior for unicode support in UDF so as not to conflict with the MAC
Framework.

Note that Apple's XNU kernel also uses #ifdef MAC for the MAC Framework.

Suggested by:	pjd
MFC after:	3 days
2009-06-06 07:13:57 +00:00
Dag-Erling Smørgrav
c097b30885 Drop Giant.
MFC after:	1 week
2009-06-06 00:44:13 +00:00
Robert Watson
bcf11e8d00 Move "options MAC" from opt_mac.h to opt_global.h, as it's now in GENERIC
and used in a large number of files, but also because an increasing number
of incorrect uses of MAC calls were sneaking in due to copy-and-paste of
MAC-aware code without the associated opt_mac.h include.

Discussed with:	pjd
2009-06-05 14:55:22 +00:00
Robert Watson
37ba986a5f Don't check MAC in the NFS server ACL set path, right now we aren't
enforcing MAC for NFS clients.
2009-06-05 14:15:00 +00:00
Robert Watson
927e0a56ce Re-add opt_mac.h include, which is required in order for MNT_MULTILABEL
to be set properly on devfs.  Otherwise, it isn't possible to set labels
on /dev nodes.

Reported by:	Sergio Rodriguez <sergiorr at yahoo.com>
MFC after:	3 days
2009-06-04 10:30:18 +00:00
Alan Cox
1f17689408 nfs_write() can use the recently introduced vfs_bio_set_valid() instead of
vfs_bio_set_validclean(), thereby avoiding the page queues lock.

Garbage collect vfs_bio_set_validclean().  Nothing uses it any longer.
2009-05-31 20:18:02 +00:00
Konstantin Belousov
b00098d164 Unlock the pseudofs vnode before calling fill method for pfs_readlink().
The fill code may need to lock another vnode, e.g. procfs file
implementation.

Reviewed by:	des
Tested by:	pho
MFC after:	2 weeks
2009-05-31 15:01:50 +00:00
Konstantin Belousov
b0f34bb643 Implement the bypass routine for VOP_VPTOCNP in nullfs.
Among other things, this makes procfs <pid>/file working for executables
started from nullfs mount.

Tested by:	pho
PR:	94269, 104938
2009-05-31 14:58:43 +00:00
Konstantin Belousov
b9131889d2 Do not drop vnode interlock in null_checkvp(). null_lock() verifies that
v_data is not-null before calling NULLVPTOLOWERVP(), and dropping the
interlock allows for reclaim to clean v_data and free the memory.

While there, remove unneeded semicolons and convert the infinite loops
to panics. I have a will to remove null_checkvp() altogether, or leave
it as a trivial stub, but not now.

Reported and tested by:	pho
2009-05-31 14:54:20 +00:00
Konstantin Belousov
cec9ed6d7f Lock the real null vnode lock before substitution of vp->v_vnlock.
This should not really matter for correctness, since vp->v_lock is
not locked before the call, and null_lock() holds the interlock,
but makes the control flow for reclaim more clear.

Tested by:	pho
2009-05-31 14:52:45 +00:00
Marko Zec
705fe7ce35 Unbreak options VIMAGE kernel builds.
Approved by:	julian (mentor)
2009-05-31 11:57:51 +00:00
Rick Macklem
d00a615a98 Add a check to v_type == VREG for the recently modified code that
does NFSv4 Closes in the experimental client's VOP_INACTIVE().
I also replaced a bunch of ap->a_vp with a local copy of vp,
because I thought that made it more readable.

Approved by:	kib (mentor)
2009-05-30 22:11:12 +00:00
Edward Tomasz Napierala
c97fcdba57 Add VOP_ACCESSX, which can be used to query for newly added V*
permissions, such as VWRITE_ACL.  For a filsystems that don't
implement it, there is a default implementation, which works
as a wrapper around VOP_ACCESS.

Reviewed by:	rwatson@
2009-05-30 13:59:05 +00:00
Jamie Gritton
76ca6f88da Place hostnames and similar information fully under the prison system.
The system hostname is now stored in prison0, and the global variable
"hostname" has been removed, as has the hostname_mtx mutex.  Jails may
have their own host information, or they may inherit it from the
parent/system.  The proper way to read the hostname is via
getcredhostname(), which will copy either the hostname associated with
the passed cred, or the system hostname if you pass NULL.  The system
hostname can still be accessed directly (and without locking) at
prison0.pr_host, but that should be avoided where possible.

The "similar information" referred to is domainname, hostid, and
hostuuid, which have also become prison parameters and had their
associated global variables removed.

Approved by:	bz (mentor)
2009-05-29 21:27:12 +00:00
Alan Cox
3933ec4d15 Make *getpages()s' assertion on the state of each page's dirty bits
stricter.
2009-05-28 18:11:09 +00:00
Dag-Erling Smørgrav
26088b9d4d Use a temporary variable to avoid a duplicate strlen().
Submitted by:	kib
MFC after:	1 week
2009-05-28 10:24:26 +00:00
Rick Macklem
fdd88deeba Fix handling of NFSv4 Close operations in ncl_inactive(). Only
do them for NFSv4 and flush writes to the server before doing
the Close(s), as required. Also, use the a_td argument instead of
curthread.

Approved by:	kib (mentor)
2009-05-27 19:41:29 +00:00
Alan Cox
e2d0be0172 Eliminate redundant setting of a page's valid bits and pointless clearing
of the same page's dirty bits.
2009-05-27 18:12:10 +00:00
Rick Macklem
ee1c1433e3 Add a function to the experimental nfs subsystem that tests to see
if a local file system supports NFSv4 ACLs. This allows the
NFSHASNFS4ACL() macro to be correctly implemented. The NFSv4 ACL
support should now work when the server exports a ZFS volume.

Approved by:	kib (mentor)
2009-05-27 15:16:56 +00:00
Jamie Gritton
0304c73163 Add hierarchical jails. A jail may further virtualize its environment
by creating a child jail, which is visible to that jail and to any
parent jails.  Child jails may be restricted more than their parents,
but never less.  Jail names reflect this hierarchy, being MIB-style
dot-separated strings.

Every thread now points to a jail, the default being prison0, which
contains information about the physical system.  Prison0's root
directory is the same as rootvnode; its hostname is the same as the
global hostname, and its securelevel replaces the global securelevel.
Note that the variable "securelevel" has actually gone away, which
should not cause any problems for code that properly uses
securelevel_gt() and securelevel_ge().

Some jail-related permissions that were kept in global variables and
set via sysctls are now per-jail settings.  The sysctls still exist for
backward compatibility, used only by the now-deprecated jail(2) system
call.

Approved by:	bz (mentor)
2009-05-27 14:11:23 +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
Edward Tomasz Napierala
ff392a1d87 Adapt to the new ACL #define names.
Reviewed by:	rmacklem@
2009-05-26 17:01:00 +00:00
Rick Macklem
10a5a16efa Add two sysctl variables to the experimental nfs server, so
that the range of versions of NFS handled by the server can
be limited. The nfsd daemon must be restarted after these
sysctl variables are changed, in order for the change to take
effect.

Approved by:	kib (mentor)
2009-05-26 01:47:37 +00:00
Rick Macklem
9183a2a33e Fix the handling of NFSv4 Illegal Operation number to conform
to RFC3530 (the operation number in the reply must be set to
the value for OP_ILLEGAL). Also cleaned up some indentation.

Approved by:	kib (mentor)
2009-05-26 01:16:09 +00:00
Rick Macklem
415670e4c2 Fix the experimental nfs server's interface to the new krpc so
that it handles the case of a non-exported NFSv4 root correctly.
Also, delete handling for the case where nd_repstat is already
set in nfs_proc(), since that no longer happens.

Approved by:	kib (mentor)
2009-05-26 01:09:33 +00:00
Rick Macklem
b1cfc0d961 Add NFSv4 root export checks to the DelegPurge, Renew and
ReleaseLockOwner operations analagous to what is already
in place for SetClientID and SetClientIDConfirm. These are
the five NFSv4 operations that do not use file handle(s),
so the checks are done using the NFSv4 root export entries
in /etc/exports.

Approved by:	kib (mentor)
2009-05-25 01:00:09 +00:00
Rick Macklem
6098ac23c1 Temporarily #undef NFS4_ACL_EXTATTR_NAME, so that the
experimental nfs subsystem will build while the NFSv4 ACL
support is going into the kernel.

Approved by:	kib (mentor)
2009-05-24 23:47:22 +00:00
Rick Macklem
05c965a221 Crib the realign function out of nfs_krpc.c and add a call
to it for the client side reply. Hopefully this fixes the
problem with using the new krpc for arm for the experimental
nfs client.

Approved by:	kib (mentor)
2009-05-24 19:46:12 +00:00
Rick Macklem
c1edc4480e Fix the experimental NFSv4 server so that it handles the case
where a client is not allowed NFSv4 access correctly. This
restriction is specified in the "V4: ..." line(s) in
/etc/exports.

Approved by:	kib (mentor)
2009-05-24 18:49:53 +00:00
Rick Macklem
63bde62e9a Fix the experimental nfsv4 client so that it works for the
case of a kerberized mount without a host based principal
name. This will only work for mounts being done by a user
other than root. Support for a host based principal name
will not work until proposed changes to the rpcsec_gss part
of the krpc are committed. It now builds for "options KGSSAPI".

Approved by:	kib (mentor)
2009-05-24 03:22:49 +00:00
Alan Cox
5662349ed5 Eliminate the unnecessary clearing of a page's dirty bits from
nwfs_getpages().
2009-05-23 18:25:11 +00:00
Rick Macklem
e2b84e0308 Fix the rpc_gss_secfind() call in nfs_commonkrpc.c so that
the code will build when "options KGSSAPI" is specified
without requiring the proposed changes that add host based
initiator principal support. It will not handle the case where
the client uses a host based initiator principal until those
changes are committed. The code that uses those changes is
#ifdef'd notyet until the krpc rpcsec_changes are committed.

Approved by:	kib (mentor)
2009-05-23 00:40:17 +00:00
Rick Macklem
b66124f314 Change the sysctl_base argument to svcpool_create() to NULL for
client side callbacks so that leaf names are not re-used,
since they are already being used by the server.

Approved by:	kib (mentor)
2009-05-22 23:22:56 +00:00
Rick Macklem
9dd7554f09 Fix the name of the module common to the client and server
in the experimental nfs subsystem to the correct one for
the MODULE_DEPEND() macro.

Approved by:	kib (mentor)
2009-05-22 20:55:29 +00:00
Rick Macklem
ed41a7ccee Change the printf of r192595 to identify the function,
as requested by Sam.

Approved by:	kib (mentor)
2009-05-22 19:05:48 +00:00
Rick Macklem
476174008c Modified the printf message of r192590 to remove the
possible DOS attack, as suggested by Sam.

Approved by:	kib (mentor)
2009-05-22 18:10:39 +00:00
Rick Macklem
8757104e6b Change the comment at the beginning of the function to reflect the
change from panic() to printf() done by r192588.
2009-05-22 16:46:01 +00:00
Rick Macklem
199685bca9 Change the reboot panic that would have occurred if clientid
numbers wrapped around to a printf() warning of a possible
DOS attack, in the experimental nfsv4 server.

Approved by:	kib (mentor)
2009-05-22 16:41:33 +00:00
Rick Macklem
682eec57c4 Modify the mount handling code in the experimental nfs client to
use the newer nmount() style arguments, as is used by mount_nfs.c.
This prepares the kernel code for the use of a mount_nfs.c with
changes for the experimental client integrated into it.

Approved by:	kib (mentor)
2009-05-22 15:08:12 +00:00
Rick Macklem
6ffb637d4a Change the code in the experimental nfs client to avoid flushing
writes upon close when a write delegation is held by the client.
This should be safe to do, now that nfsv4 Close operations are
delayed until ncl_inactive() is called for the vnode.

Approved by:	kib (mentor)
2009-05-22 15:01:47 +00:00
Rick Macklem
7951235502 Fix the comment in sys/fs/nfs/nfs.h to correctly reflect the
current use of the R_xxx flags. This changed when the
NFS_LEGACYRPC code was removed from the subsystem.

Approved by:	kib (mentor)
2009-05-22 14:53:26 +00:00
Robert Watson
86ce6a83d1 Remove the unmaintained University of Michigan NFSv4 client from 8.x
prior to 8.0-RELEASE.  Rick Macklem's new and more feature-rich NFSv234
client and server are replacing it.

Discussed with:	rmacklem
2009-05-22 12:35:12 +00:00
Rick Macklem
92f7f12bca Fix the experimental nfs server so that it depends on the nlm,
since it now calls nlm_acquire_next_sysid().

Approved by:	kib (mentor)
2009-05-22 01:15:07 +00:00
Rick Macklem
bac9ff3446 Fix the comment at line 3711 to be consistent with the change
applied for r192537.

Approved by:	kib (mentor)
2009-05-21 14:52:36 +00:00
Rick Macklem
b839e625b0 Modify sys/fs/nfsserver/nfs_nfsdport.c to use nlm_acquire_next_sysid()
to set the l_sysid for locks correctly.

Approved by:	kib (mentor)
2009-05-21 01:50:27 +00:00
Rick Macklem
29e890f126 Although it should never happen, all the nfsv4 server can do
when it runs out of clientids is reboot. I had replaced cpu_reboot()
with printf(), since cpu_reboot() doesn't exist for sparc64.
This change replaces the printf() with panic(), so the reboot
would occur for this highly unlikely occurrence.

Approved by:	kib (mentor)
2009-05-20 18:58:07 +00:00
Rick Macklem
47a598563d Change the experimental NFSv4 client so that it does not do
the NFSv4 Close operations until ncl_inactive(). This is
necessary so that the Open StateIDs are available for doing
I/O on mmap'd files after VOP_CLOSE(). I also changed some
indentation for the nfscl_getclose() function.

Approved by:	kib (mentor)
2009-05-18 21:22:03 +00:00
Rick Macklem
2c1b26b976 Fix the acquisition of local locks via VOP_ADVLOCK() by the
experimental nfsv4 server. It was setting the a_id argument
to a fixed value, but that wasn't sufficient for FreeBSD8.
Instead, set l_pid and l_sysid to 0 plus set the F_REMOTE
flag to indicate that these fields are used to check for
same lock owner. Since, for NFSv4, a lockowner is a ClientID plus
an up to 1024byte name, it can't be put in l_sysid easily.
I also renamed the p variable to td, since it's a thread ptr.

Approved by:	kib (mentor)
2009-05-17 19:33:48 +00:00
Rick Macklem
57d1e46484 Added a SYSCTL to sys/fs/nfsserver/nfs_nfsdport.c so that the value of
nfsrv_dolocallocks can be changed via sysctl. I also added some non-empty
descriptor strings and reformatted some overly long lines.

Approved by:	kib (mentor)
2009-05-17 17:54:01 +00:00