Add a watchdog using the RTAS OS surveillance service. This is
provided as a simpler alternative to rtasd. The added value
is that it works with standard watchdog client programs and
can therefore also do user space monitoring.
On BPA, rtasd is not really useful because the hardware does
not have much to report with event-scan.
The driver should also work on other platforms that support
the OS surveillance rtas calls.
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The firmware provides the location and size of the nvram
in the device tree, so it does not really contain any
hardware specific bits and could be used on other
machines as well.
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The pSeries_progress function is called from some places in the rtas code,
which may also be used by non-pSeries platforms.
Though pSeries is currently the only platform type that implements
display-character, the code is actually generic enough to be part of
the rtas subsystem.
I hit a bug here because the generic rtas code tried calling ppc_md.progress,
which points to an __init function on most platforms.
We could also clear the ppc_md.progress pointer when freeing the init memory
to make it more explicit that ppc_md.progress must not be called after
bootup.
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
BPA is using rtas for PCI but should not be confused by
pSeries code. This also avoids some #ifdefs. Other
platforms that want to use rtas_pci.c could create
their own platform_pci.c with platform specific fixups.
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
The rtc rtas functions are not pSeries specific but can
also be used by BPA and other SLOF based platforms
Signed-off-by: Arnd Bergmann <arndb@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
pSeries and maple have almost the same code for calibrate_decr,
and BPA would need yet another copy. Instead, I'm moving the
code to arch/ppc64/kernel/time.c.
Some of the related declarations were missing from header
files, so I'm moving those as well.
It makes sense to merge this with the pmac function of the
same name, so we end up having just one implemetation for
iSeries and one for Open Firmware based machines.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Since meminfo.bank[] array contains page-aligned start/size, we
no longer need to explicitly round up/down the addresses when
converting to PFNs.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Adding support for MPC8548 w/o PCI support, broke building MPC8555 CDS
by trying to remove a loop variable that was used when PCI is enabled.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org)
Request RDATTR_ERROR as an attribute in readdir to distinguish between a
directory being within an absent filesystem or one (or more) of its entries.
Signed-off-by: Manoj Naik <manoj@almaden.ibm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
If the lock blocks, the server may send us a GRANTED message that
races with the reply to our LOCK request. Make sure that we catch
the GRANTED by queueing up our request on the nlm_blocked list
before we send off the first LOCK rpc call.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Basically copies the VFS's method for tracking writebacks and applies
it to the struct nfs_page.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Unless we're doing O_APPEND writes, we really don't care about revalidating
the file length. Just make sure that we catch any page cache invalidations.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Instead of looking at whether or not the file is open for writes before
we accept to update the length using the server value, we should rather
be looking at whether or not we are currently caching any writes.
Failure to do so means in particular that we're not updating the file
length correctly after obtaining a POSIX or BSD lock.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
If we do not hold a valid stateid that is open for writes, there is little
point in doing an extra open of the file, as the RFC does not appear to
mandate this...
Make setattr use the correct stateid if we're holding mandatory byte
range locks.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
NFSv3 currently returns the unsigned 64-bit cookie directly to
userspace. The following patch causes the kernel to generate
loff_t offsets for the benefit of userland.
The current server-generated READDIR cookie is cached in the
nfs_open_context instead of in filp->f_pos, so we still end up work
correctly under directory insertions/deletion.
Signed-off-by: Olivier Galibert <galibert@pobox.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Make the socket transport kick the event queue to start socket connects
immediately. This should improve responsiveness of applications that are
sensitive to slow mount operations (like automounters).
We are now also careful to cancel the connect worker before destroying
the xprt. This eliminates a race where xprt_destroy can finish before
the connect worker is even allowed to run.
Test-plan:
Destructive testing (unplugging the network temporarily). Connectathon
with UDP and TCP. Hard-code impossibly small connect timeout.
Version: Fri, 29 Apr 2005 15:32:01 -0400
Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
When the network layer reports a connection close, the RPC task
waiting to reconnect should be notified so it can retry immediately
instead of waiting for the normal connection establishment timeout.
This reverts a change made in 2.6.6 as part of adding client support
for RPC over TCP socket idle timeouts.
Test-plan:
Destructive testing with NFS over TCP mounts.
Version: Fri, 29 Apr 2005 15:31:46 -0400
Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cancel autodisconnect requests inside xprt_transmit() in order to avoid
races.
Use more efficient del_singleshot_timer_sync()
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
For internal purposes, the rpc_clnt_sigmask() call is replaced by
a call to rpc_task_sigmask(), which ensures that the current task
sigmask respects both the client cl_intr flag and the per-task NOINTR flag.
Problem noted by Jiaying Zhang.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
The changeset "trond.myklebust@fys.uio.no|ChangeSet|20050322152404|16979"
(RPC: Ensure XDR iovec length is initialized correctly in call_header)
causes the NFSv4 callback code to BUG() due to an incorrectly initialized
scratch buffer.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Older gcc's don't like this.
fs/nfs/nfs4proc.c:2194: field `data' has incomplete type
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
The Coverity checker noticed that such a simplification was possible.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Pointer arithmetic bug: p is in word units. This fixes a memory
corruption with big acls.
* Initialize pg_class to prevent a NULL pointer access.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Attach acls to inodes in the icache to avoid unnecessary GETACL RPC
round-trips. As long as the client doesn't retrieve any acls itself, only the
default acls of exiting directories and the default and access acls of new
directories will end up in the cache, which preserves some memory compared to
always caching the access and default acl of all files.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Olaf Kirch <okir@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
NFSv3 has no concept of a umask on the server side: The client applies
the umask locally, and sends the effective permissions to the server.
This behavior is wrong when files are created in a directory that has a
default ACL. In this case, the umask is supposed to be ignored, and
only the default ACL determines the file's effective permissions.
Usually its the server's task to conditionally apply the umask. But
since the server knows nothing about the umask, we have to do it on the
client side. This patch tries to fetch the parent directory's default
ACL before creating a new file, computes the appropriate create mode to
send to the server, and finally sets the new file's access and default
acl appropriately.
Many thanks to Buck Huppmann <buchk@pobox.com> for sending the initial
version of this patch, as well as for arguing why we need this change.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Olaf Kirch <okir@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This adds acl support fo nfs clients via the NFSACL protocol extension, by
implementing the getxattr, listxattr, setxattr, and removexattr iops for the
system.posix_acl_access and system.posix_acl_default attributes. This patch
implements a dumb version that uses no caching (and thus adds some overhead).
(Another patch in this patchset adds caching as well.)
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Olaf Kirch <okir@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This adds functions for encoding and decoding POSIX ACLs for the NFSACL
protocol extension, and the GETACL and SETACL RPCs. The implementation is
compatible with NFSACL in Solaris.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Acked-by: Olaf Kirch <okir@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
The NFS and NFSACL programs run on the same RPC transport. This patch adds
support for this by converting svc_program into a chained list of programs
(server-side).
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Olaf Kirch <okir@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Add the missing NFS3ERR_NOTSUPP error code (defined in NFSv3) to the
system-to-protocol-error table in nfsd. The nfsacl extension uses this error
code.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Olaf Kirch <okir@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
