2005-04-16 22:20:36 +00:00
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|
|
/*
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* linux/fs/nfs/nfs3proc.c
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*
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* Client-side NFSv3 procedures stubs.
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*
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* Copyright (C) 1997, Olaf Kirch
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*/
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#include <linux/mm.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/sunrpc/clnt.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
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#include <linux/slab.h>
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2005-04-16 22:20:36 +00:00
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#include <linux/nfs.h>
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#include <linux/nfs3.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfs_page.h>
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#include <linux/lockd/bind.h>
|
2005-06-22 17:16:27 +00:00
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#include <linux/nfs_mount.h>
|
2011-12-01 21:44:39 +00:00
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#include <linux/freezer.h>
|
2014-02-03 19:31:07 +00:00
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#include <linux/xattr.h>
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2005-04-16 22:20:36 +00:00
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|
2006-03-20 18:44:14 +00:00
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#include "iostat.h"
|
NFS: Split fs/nfs/inode.c
As fs/nfs/inode.c is rather large, heterogenous and unwieldy, the attached
patch splits it up into a number of files:
(*) fs/nfs/inode.c
Strictly inode specific functions.
(*) fs/nfs/super.c
Superblock management functions for NFS and NFS4, normal access, clones
and referrals. The NFS4 superblock functions _could_ move out into a
separate conditionally compiled file, but it's probably not worth it as
there're so many common bits.
(*) fs/nfs/namespace.c
Some namespace-specific functions have been moved here.
(*) fs/nfs/nfs4namespace.c
NFS4-specific namespace functions (this could be merged into the previous
file). This file is conditionally compiled.
(*) fs/nfs/internal.h
Inter-file declarations, plus a few simple utility functions moved from
fs/nfs/inode.c.
Additionally, all the in-.c-file externs have been moved here, and those
files they were moved from now includes this file.
For the most part, the functions have not been changed, only some multiplexor
functions have changed significantly.
I've also:
(*) Added some extra banner comments above some functions.
(*) Rearranged the function order within the files to be more logical and
better grouped (IMO), though someone may prefer a different order.
(*) Reduced the number of #ifdefs in .c files.
(*) Added missing __init and __exit directives.
Signed-Off-By: David Howells <dhowells@redhat.com>
2006-06-09 13:34:33 +00:00
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#include "internal.h"
|
2006-03-20 18:44:14 +00:00
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|
2005-04-16 22:20:36 +00:00
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|
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#define NFSDBG_FACILITY NFSDBG_PROC
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|
2012-11-27 15:34:19 +00:00
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/* A wrapper to handle the EJUKEBOX error messages */
|
2005-04-16 22:20:36 +00:00
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static int
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nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
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|
|
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{
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int res;
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do {
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res = rpc_call_sync(clnt, msg, flags);
|
2012-11-27 15:34:19 +00:00
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|
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if (res != -EJUKEBOX)
|
2005-04-16 22:20:36 +00:00
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break;
|
2013-05-06 23:50:06 +00:00
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freezable_schedule_timeout_killable_unsafe(NFS_JUKEBOX_RETRY_TIME);
|
2005-04-16 22:20:36 +00:00
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res = -ERESTARTSYS;
|
2007-12-06 21:24:39 +00:00
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|
|
} while (!fatal_signal_pending(current));
|
2005-04-16 22:20:36 +00:00
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return res;
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}
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|
2006-03-20 18:44:23 +00:00
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|
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#define rpc_call_sync(clnt, msg, flags) nfs3_rpc_wrapper(clnt, msg, flags)
|
2005-04-16 22:20:36 +00:00
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static int
|
2006-03-20 18:44:14 +00:00
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nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
|
2005-04-16 22:20:36 +00:00
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|
|
{
|
2012-11-27 15:34:19 +00:00
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|
|
if (task->tk_status != -EJUKEBOX)
|
2005-04-16 22:20:36 +00:00
|
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|
return 0;
|
2010-01-07 14:42:04 +00:00
|
|
|
if (task->tk_status == -EJUKEBOX)
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|
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nfs_inc_stats(inode, NFSIOS_DELAY);
|
2005-04-16 22:20:36 +00:00
|
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|
task->tk_status = 0;
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|
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rpc_restart_call(task);
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|
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rpc_delay(task, NFS_JUKEBOX_RETRY_TIME);
|
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return 1;
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|
|
|
}
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|
static int
|
2006-01-03 08:55:48 +00:00
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do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
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|
|
struct nfs_fsinfo *info)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-03-20 18:44:23 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
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.rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
|
|
|
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.rpc_argp = fhandle,
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|
|
|
.rpc_resp = info,
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|
|
};
|
2005-04-16 22:20:36 +00:00
|
|
|
int status;
|
|
|
|
|
2008-05-02 20:42:44 +00:00
|
|
|
dprintk("%s: call fsinfo\n", __func__);
|
2005-10-28 02:12:38 +00:00
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|
nfs_fattr_init(info->fattr);
|
2006-03-20 18:44:23 +00:00
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status = rpc_call_sync(client, &msg, 0);
|
2008-05-02 20:42:44 +00:00
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|
|
dprintk("%s: reply fsinfo: %d\n", __func__, status);
|
2012-08-20 16:42:15 +00:00
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|
|
if (status == 0 && !(info->fattr->valid & NFS_ATTR_FATTR)) {
|
2006-03-20 18:44:23 +00:00
|
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|
msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
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msg.rpc_resp = info->fattr;
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status = rpc_call_sync(client, &msg, 0);
|
2008-05-02 20:42:44 +00:00
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dprintk("%s: reply getattr: %d\n", __func__, status);
|
2005-04-16 22:20:36 +00:00
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|
|
}
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return status;
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|
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}
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|
2006-01-03 08:55:48 +00:00
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/*
|
NFS: Share NFS superblocks per-protocol per-server per-FSID
The attached patch makes NFS share superblocks between mounts from the same
server and FSID over the same protocol.
It does this by creating each superblock with a false root and returning the
real root dentry in the vfsmount presented by get_sb(). The root dentry set
starts off as an anonymous dentry if we don't already have the dentry for its
inode, otherwise it simply returns the dentry we already have.
We may thus end up with several trees of dentries in the superblock, and if at
some later point one of anonymous tree roots is discovered by normal filesystem
activity to be located in another tree within the superblock, the anonymous
root is named and materialises attached to the second tree at the appropriate
point.
Why do it this way? Why not pass an extra argument to the mount() syscall to
indicate the subpath and then pathwalk from the server root to the desired
directory? You can't guarantee this will work for two reasons:
(1) The root and intervening nodes may not be accessible to the client.
With NFS2 and NFS3, for instance, mountd is called on the server to get
the filehandle for the tip of a path. mountd won't give us handles for
anything we don't have permission to access, and so we can't set up NFS
inodes for such nodes, and so can't easily set up dentries (we'd have to
have ghost inodes or something).
With this patch we don't actually create dentries until we get handles
from the server that we can use to set up their inodes, and we don't
actually bind them into the tree until we know for sure where they go.
(2) Inaccessible symbolic links.
If we're asked to mount two exports from the server, eg:
mount warthog:/warthog/aaa/xxx /mmm
mount warthog:/warthog/bbb/yyy /nnn
We may not be able to access anything nearer the root than xxx and yyy,
but we may find out later that /mmm/www/yyy, say, is actually the same
directory as the one mounted on /nnn. What we might then find out, for
example, is that /warthog/bbb was actually a symbolic link to
/warthog/aaa/xxx/www, but we can't actually determine that by talking to
the server until /warthog is made available by NFS.
This would lead to having constructed an errneous dentry tree which we
can't easily fix. We can end up with a dentry marked as a directory when
it should actually be a symlink, or we could end up with an apparently
hardlinked directory.
With this patch we need not make assumptions about the type of a dentry
for which we can't retrieve information, nor need we assume we know its
place in the grand scheme of things until we actually see that place.
This patch reduces the possibility of aliasing in the inode and page caches for
inodes that may be accessed by more than one NFS export. It also reduces the
number of superblocks required for NFS where there are many NFS exports being
used from a server (home directory server + autofs for example).
This in turn makes it simpler to do local caching of network filesystems, as it
can then be guaranteed that there won't be links from multiple inodes in
separate superblocks to the same cache file.
Obviously, cache aliasing between different levels of NFS protocol could still
be a problem, but at least that gives us another key to use when indexing the
cache.
This patch makes the following changes:
(1) The server record construction/destruction has been abstracted out into
its own set of functions to make things easier to get right. These have
been moved into fs/nfs/client.c.
All the code in fs/nfs/client.c has to do with the management of
connections to servers, and doesn't touch superblocks in any way; the
remaining code in fs/nfs/super.c has to do with VFS superblock management.
(2) The sequence of events undertaken by NFS mount is now reordered:
(a) A volume representation (struct nfs_server) is allocated.
(b) A server representation (struct nfs_client) is acquired. This may be
allocated or shared, and is keyed on server address, port and NFS
version.
(c) If allocated, the client representation is initialised. The state
member variable of nfs_client is used to prevent a race during
initialisation from two mounts.
(d) For NFS4 a simple pathwalk is performed, walking from FH to FH to find
the root filehandle for the mount (fs/nfs/getroot.c). For NFS2/3 we
are given the root FH in advance.
(e) The volume FSID is probed for on the root FH.
(f) The volume representation is initialised from the FSINFO record
retrieved on the root FH.
(g) sget() is called to acquire a superblock. This may be allocated or
shared, keyed on client pointer and FSID.
(h) If allocated, the superblock is initialised.
(i) If the superblock is shared, then the new nfs_server record is
discarded.
(j) The root dentry for this mount is looked up from the root FH.
(k) The root dentry for this mount is assigned to the vfsmount.
(3) nfs_readdir_lookup() creates dentries for each of the entries readdir()
returns; this function now attaches disconnected trees from alternate
roots that happen to be discovered attached to a directory being read (in
the same way nfs_lookup() is made to do for lookup ops).
The new d_materialise_unique() function is now used to do this, thus
permitting the whole thing to be done under one set of locks, and thus
avoiding any race between mount and lookup operations on the same
directory.
(4) The client management code uses a new debug facility: NFSDBG_CLIENT which
is set by echoing 1024 to /proc/net/sunrpc/nfs_debug.
(5) Clone mounts are now called xdev mounts.
(6) Use the dentry passed to the statfs() op as the handle for retrieving fs
statistics rather than the root dentry of the superblock (which is now a
dummy).
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2006-08-23 00:06:13 +00:00
|
|
|
* Bare-bones access to getattr: this is for nfs_get_root/nfs_get_sb
|
2006-01-03 08:55:48 +00:00
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs3_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
|
|
struct nfs_fsinfo *info)
|
|
|
|
{
|
|
|
|
int status;
|
|
|
|
|
|
|
|
status = do_proc_get_root(server->client, fhandle, info);
|
2006-08-23 00:06:12 +00:00
|
|
|
if (status && server->nfs_client->cl_rpcclient != server->client)
|
|
|
|
status = do_proc_get_root(server->nfs_client->cl_rpcclient, fhandle, info);
|
2006-01-03 08:55:48 +00:00
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* One function for each procedure in the NFS protocol.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
|
2013-05-22 16:50:42 +00:00
|
|
|
struct nfs_fattr *fattr, struct nfs4_label *label)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-03-20 18:44:23 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR],
|
|
|
|
.rpc_argp = fhandle,
|
|
|
|
.rpc_resp = fattr,
|
|
|
|
};
|
2005-04-16 22:20:36 +00:00
|
|
|
int status;
|
|
|
|
|
|
|
|
dprintk("NFS call getattr\n");
|
2005-10-28 02:12:38 +00:00
|
|
|
nfs_fattr_init(fattr);
|
2006-03-20 18:44:23 +00:00
|
|
|
status = rpc_call_sync(server->client, &msg, 0);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply getattr: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
|
|
|
|
struct iattr *sattr)
|
|
|
|
{
|
|
|
|
struct inode *inode = dentry->d_inode;
|
|
|
|
struct nfs3_sattrargs arg = {
|
|
|
|
.fh = NFS_FH(inode),
|
|
|
|
.sattr = sattr,
|
|
|
|
};
|
2006-03-20 18:44:23 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_SETATTR],
|
|
|
|
.rpc_argp = &arg,
|
|
|
|
.rpc_resp = fattr,
|
|
|
|
};
|
2005-04-16 22:20:36 +00:00
|
|
|
int status;
|
|
|
|
|
|
|
|
dprintk("NFS call setattr\n");
|
2008-06-10 23:39:41 +00:00
|
|
|
if (sattr->ia_valid & ATTR_FILE)
|
|
|
|
msg.rpc_cred = nfs_file_cred(sattr->ia_file);
|
2005-10-28 02:12:38 +00:00
|
|
|
nfs_fattr_init(fattr);
|
2006-03-20 18:44:23 +00:00
|
|
|
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
|
2005-08-16 15:49:44 +00:00
|
|
|
if (status == 0)
|
|
|
|
nfs_setattr_update_inode(inode, sattr);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply setattr: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2012-04-27 17:27:46 +00:00
|
|
|
nfs3_proc_lookup(struct inode *dir, struct qstr *name,
|
2013-05-22 16:50:42 +00:00
|
|
|
struct nfs_fh *fhandle, struct nfs_fattr *fattr,
|
|
|
|
struct nfs4_label *label)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct nfs3_diropargs arg = {
|
|
|
|
.fh = NFS_FH(dir),
|
|
|
|
.name = name->name,
|
|
|
|
.len = name->len
|
|
|
|
};
|
|
|
|
struct nfs3_diropres res = {
|
|
|
|
.fh = fhandle,
|
|
|
|
.fattr = fattr
|
|
|
|
};
|
2006-03-20 18:44:23 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_LOOKUP],
|
|
|
|
.rpc_argp = &arg,
|
|
|
|
.rpc_resp = &res,
|
|
|
|
};
|
2005-04-16 22:20:36 +00:00
|
|
|
int status;
|
|
|
|
|
|
|
|
dprintk("NFS call lookup %s\n", name->name);
|
2010-04-16 20:22:47 +00:00
|
|
|
res.dir_attr = nfs_alloc_fattr();
|
|
|
|
if (res.dir_attr == NULL)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2005-10-28 02:12:38 +00:00
|
|
|
nfs_fattr_init(fattr);
|
2006-03-20 18:44:23 +00:00
|
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
2010-04-16 20:22:47 +00:00
|
|
|
nfs_refresh_inode(dir, res.dir_attr);
|
2006-03-20 18:44:23 +00:00
|
|
|
if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
|
|
|
|
msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
|
|
|
|
msg.rpc_argp = fhandle;
|
|
|
|
msg.rpc_resp = fattr;
|
|
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
|
|
|
}
|
2010-04-16 20:22:47 +00:00
|
|
|
nfs_free_fattr(res.dir_attr);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply lookup: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
|
|
|
|
{
|
|
|
|
struct nfs3_accessargs arg = {
|
|
|
|
.fh = NFS_FH(inode),
|
|
|
|
};
|
2010-04-16 20:22:48 +00:00
|
|
|
struct nfs3_accessres res;
|
2005-04-16 22:20:36 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_ACCESS],
|
|
|
|
.rpc_argp = &arg,
|
|
|
|
.rpc_resp = &res,
|
2006-03-20 18:44:23 +00:00
|
|
|
.rpc_cred = entry->cred,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
int mode = entry->mask;
|
2010-04-16 20:22:48 +00:00
|
|
|
int status = -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
dprintk("NFS call access\n");
|
|
|
|
|
|
|
|
if (mode & MAY_READ)
|
|
|
|
arg.access |= NFS3_ACCESS_READ;
|
|
|
|
if (S_ISDIR(inode->i_mode)) {
|
|
|
|
if (mode & MAY_WRITE)
|
|
|
|
arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE;
|
|
|
|
if (mode & MAY_EXEC)
|
|
|
|
arg.access |= NFS3_ACCESS_LOOKUP;
|
|
|
|
} else {
|
|
|
|
if (mode & MAY_WRITE)
|
|
|
|
arg.access |= NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND;
|
|
|
|
if (mode & MAY_EXEC)
|
|
|
|
arg.access |= NFS3_ACCESS_EXECUTE;
|
|
|
|
}
|
2010-04-16 20:22:48 +00:00
|
|
|
|
|
|
|
res.fattr = nfs_alloc_fattr();
|
|
|
|
if (res.fattr == NULL)
|
|
|
|
goto out;
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
|
2010-04-16 20:22:48 +00:00
|
|
|
nfs_refresh_inode(inode, res.fattr);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (status == 0) {
|
|
|
|
entry->mask = 0;
|
|
|
|
if (res.access & NFS3_ACCESS_READ)
|
|
|
|
entry->mask |= MAY_READ;
|
|
|
|
if (res.access & (NFS3_ACCESS_MODIFY | NFS3_ACCESS_EXTEND | NFS3_ACCESS_DELETE))
|
|
|
|
entry->mask |= MAY_WRITE;
|
|
|
|
if (res.access & (NFS3_ACCESS_LOOKUP|NFS3_ACCESS_EXECUTE))
|
|
|
|
entry->mask |= MAY_EXEC;
|
|
|
|
}
|
2010-04-16 20:22:48 +00:00
|
|
|
nfs_free_fattr(res.fattr);
|
|
|
|
out:
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply access: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int nfs3_proc_readlink(struct inode *inode, struct page *page,
|
|
|
|
unsigned int pgbase, unsigned int pglen)
|
|
|
|
{
|
2010-04-16 20:22:50 +00:00
|
|
|
struct nfs_fattr *fattr;
|
2005-04-16 22:20:36 +00:00
|
|
|
struct nfs3_readlinkargs args = {
|
|
|
|
.fh = NFS_FH(inode),
|
|
|
|
.pgbase = pgbase,
|
|
|
|
.pglen = pglen,
|
|
|
|
.pages = &page
|
|
|
|
};
|
2006-03-20 18:44:23 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_READLINK],
|
|
|
|
.rpc_argp = &args,
|
|
|
|
};
|
2010-04-16 20:22:50 +00:00
|
|
|
int status = -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
dprintk("NFS call readlink\n");
|
2010-04-16 20:22:50 +00:00
|
|
|
fattr = nfs_alloc_fattr();
|
|
|
|
if (fattr == NULL)
|
|
|
|
goto out;
|
|
|
|
msg.rpc_resp = fattr;
|
|
|
|
|
2006-03-20 18:44:23 +00:00
|
|
|
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
|
2010-04-16 20:22:50 +00:00
|
|
|
nfs_refresh_inode(inode, fattr);
|
|
|
|
nfs_free_fattr(fattr);
|
|
|
|
out:
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply readlink: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2008-06-20 21:00:23 +00:00
|
|
|
struct nfs3_createdata {
|
|
|
|
struct rpc_message msg;
|
|
|
|
union {
|
|
|
|
struct nfs3_createargs create;
|
|
|
|
struct nfs3_mkdirargs mkdir;
|
|
|
|
struct nfs3_symlinkargs symlink;
|
|
|
|
struct nfs3_mknodargs mknod;
|
|
|
|
} arg;
|
|
|
|
struct nfs3_diropres res;
|
|
|
|
struct nfs_fh fh;
|
|
|
|
struct nfs_fattr fattr;
|
|
|
|
struct nfs_fattr dir_attr;
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct nfs3_createdata *nfs3_alloc_createdata(void)
|
|
|
|
{
|
|
|
|
struct nfs3_createdata *data;
|
|
|
|
|
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
|
|
|
if (data != NULL) {
|
|
|
|
data->msg.rpc_argp = &data->arg;
|
|
|
|
data->msg.rpc_resp = &data->res;
|
|
|
|
data->res.fh = &data->fh;
|
|
|
|
data->res.fattr = &data->fattr;
|
|
|
|
data->res.dir_attr = &data->dir_attr;
|
|
|
|
nfs_fattr_init(data->res.fattr);
|
|
|
|
nfs_fattr_init(data->res.dir_attr);
|
|
|
|
}
|
|
|
|
return data;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int nfs3_do_create(struct inode *dir, struct dentry *dentry, struct nfs3_createdata *data)
|
|
|
|
{
|
|
|
|
int status;
|
|
|
|
|
|
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &data->msg, 0);
|
|
|
|
nfs_post_op_update_inode(dir, data->res.dir_attr);
|
|
|
|
if (status == 0)
|
2013-05-22 16:50:42 +00:00
|
|
|
status = nfs_instantiate(dentry, data->res.fh, data->res.fattr, NULL);
|
2008-06-20 21:00:23 +00:00
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void nfs3_free_createdata(struct nfs3_createdata *data)
|
|
|
|
{
|
|
|
|
kfree(data);
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* Create a regular file.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
|
2012-06-05 13:10:19 +00:00
|
|
|
int flags)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2013-12-20 13:16:53 +00:00
|
|
|
struct posix_acl *default_acl, *acl;
|
2008-06-20 21:00:23 +00:00
|
|
|
struct nfs3_createdata *data;
|
|
|
|
int status = -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2013-09-16 14:53:17 +00:00
|
|
|
dprintk("NFS call create %pd\n", dentry);
|
2008-06-20 21:00:23 +00:00
|
|
|
|
|
|
|
data = nfs3_alloc_createdata();
|
|
|
|
if (data == NULL)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_CREATE];
|
|
|
|
data->arg.create.fh = NFS_FH(dir);
|
|
|
|
data->arg.create.name = dentry->d_name.name;
|
|
|
|
data->arg.create.len = dentry->d_name.len;
|
|
|
|
data->arg.create.sattr = sattr;
|
|
|
|
|
|
|
|
data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
|
2005-04-16 22:20:36 +00:00
|
|
|
if (flags & O_EXCL) {
|
2008-06-20 21:00:23 +00:00
|
|
|
data->arg.create.createmode = NFS3_CREATE_EXCLUSIVE;
|
2013-08-21 01:04:11 +00:00
|
|
|
data->arg.create.verifier[0] = cpu_to_be32(jiffies);
|
|
|
|
data->arg.create.verifier[1] = cpu_to_be32(current->pid);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2013-12-20 13:16:53 +00:00
|
|
|
status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
|
|
|
|
if (status)
|
|
|
|
goto out;
|
2005-06-22 17:16:27 +00:00
|
|
|
|
2008-06-20 21:00:23 +00:00
|
|
|
for (;;) {
|
|
|
|
status = nfs3_do_create(dir, dentry, data);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-06-20 21:00:23 +00:00
|
|
|
if (status != -ENOTSUPP)
|
|
|
|
break;
|
|
|
|
/* If the server doesn't support the exclusive creation
|
|
|
|
* semantics, try again with simple 'guarded' mode. */
|
|
|
|
switch (data->arg.create.createmode) {
|
2005-04-16 22:20:36 +00:00
|
|
|
case NFS3_CREATE_EXCLUSIVE:
|
2008-06-20 21:00:23 +00:00
|
|
|
data->arg.create.createmode = NFS3_CREATE_GUARDED;
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case NFS3_CREATE_GUARDED:
|
2008-06-20 21:00:23 +00:00
|
|
|
data->arg.create.createmode = NFS3_CREATE_UNCHECKED;
|
2005-04-16 22:20:36 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case NFS3_CREATE_UNCHECKED:
|
|
|
|
goto out;
|
|
|
|
}
|
2008-06-20 21:00:23 +00:00
|
|
|
nfs_fattr_init(data->res.dir_attr);
|
|
|
|
nfs_fattr_init(data->res.fattr);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (status != 0)
|
2013-12-20 13:16:53 +00:00
|
|
|
goto out_release_acls;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* When we created the file with exclusive semantics, make
|
|
|
|
* sure we set the attributes afterwards. */
|
2008-06-20 21:00:23 +00:00
|
|
|
if (data->arg.create.createmode == NFS3_CREATE_EXCLUSIVE) {
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS call setattr (post-create)\n");
|
|
|
|
|
|
|
|
if (!(sattr->ia_valid & ATTR_ATIME_SET))
|
|
|
|
sattr->ia_valid |= ATTR_ATIME;
|
|
|
|
if (!(sattr->ia_valid & ATTR_MTIME_SET))
|
|
|
|
sattr->ia_valid |= ATTR_MTIME;
|
|
|
|
|
|
|
|
/* Note: we could use a guarded setattr here, but I'm
|
|
|
|
* not sure this buys us anything (and I'd have
|
|
|
|
* to revamp the NFSv3 XDR code) */
|
2008-06-20 21:00:23 +00:00
|
|
|
status = nfs3_proc_setattr(dentry, data->res.fattr, sattr);
|
|
|
|
nfs_post_op_update_inode(dentry->d_inode, data->res.fattr);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply setattr (post-create): %d\n", status);
|
2008-06-20 21:00:23 +00:00
|
|
|
if (status != 0)
|
2013-12-20 13:16:53 +00:00
|
|
|
goto out_release_acls;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2013-12-20 13:16:53 +00:00
|
|
|
|
|
|
|
status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
|
|
|
|
|
|
|
|
out_release_acls:
|
|
|
|
posix_acl_release(acl);
|
|
|
|
posix_acl_release(default_acl);
|
2005-04-16 22:20:36 +00:00
|
|
|
out:
|
2008-06-20 21:00:23 +00:00
|
|
|
nfs3_free_createdata(data);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply create: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs3_proc_remove(struct inode *dir, struct qstr *name)
|
|
|
|
{
|
2007-07-14 19:39:57 +00:00
|
|
|
struct nfs_removeargs arg = {
|
|
|
|
.fh = NFS_FH(dir),
|
2012-05-10 20:14:12 +00:00
|
|
|
.name = *name,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
2007-07-14 19:39:57 +00:00
|
|
|
struct nfs_removeres res;
|
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE],
|
|
|
|
.rpc_argp = &arg,
|
|
|
|
.rpc_resp = &res,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
2010-04-16 20:22:50 +00:00
|
|
|
int status = -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
dprintk("NFS call remove %s\n", name->name);
|
2010-04-16 20:22:50 +00:00
|
|
|
res.dir_attr = nfs_alloc_fattr();
|
|
|
|
if (res.dir_attr == NULL)
|
|
|
|
goto out;
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
2010-04-16 20:22:50 +00:00
|
|
|
nfs_post_op_update_inode(dir, res.dir_attr);
|
|
|
|
nfs_free_fattr(res.dir_attr);
|
|
|
|
out:
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply remove: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2007-07-14 19:39:58 +00:00
|
|
|
static void
|
|
|
|
nfs3_proc_unlink_setup(struct rpc_message *msg, struct inode *dir)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_REMOVE];
|
|
|
|
}
|
|
|
|
|
2012-03-19 18:54:41 +00:00
|
|
|
static void nfs3_proc_unlink_rpc_prepare(struct rpc_task *task, struct nfs_unlinkdata *data)
|
|
|
|
{
|
|
|
|
rpc_call_start(task);
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
static int
|
2007-07-14 19:39:58 +00:00
|
|
|
nfs3_proc_unlink_done(struct rpc_task *task, struct inode *dir)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2007-07-14 19:39:58 +00:00
|
|
|
struct nfs_removeres *res;
|
|
|
|
if (nfs3_async_handle_jukebox(task, dir))
|
|
|
|
return 0;
|
|
|
|
res = task->tk_msg.rpc_resp;
|
2010-04-16 20:22:50 +00:00
|
|
|
nfs_post_op_update_inode(dir, res->dir_attr);
|
2007-07-14 19:39:58 +00:00
|
|
|
return 1;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2010-09-17 21:31:57 +00:00
|
|
|
static void
|
|
|
|
nfs3_proc_rename_setup(struct rpc_message *msg, struct inode *dir)
|
|
|
|
{
|
|
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_RENAME];
|
|
|
|
}
|
|
|
|
|
2012-03-19 18:54:42 +00:00
|
|
|
static void nfs3_proc_rename_rpc_prepare(struct rpc_task *task, struct nfs_renamedata *data)
|
|
|
|
{
|
|
|
|
rpc_call_start(task);
|
|
|
|
}
|
|
|
|
|
2010-09-17 21:31:57 +00:00
|
|
|
static int
|
|
|
|
nfs3_proc_rename_done(struct rpc_task *task, struct inode *old_dir,
|
|
|
|
struct inode *new_dir)
|
|
|
|
{
|
|
|
|
struct nfs_renameres *res;
|
|
|
|
|
|
|
|
if (nfs3_async_handle_jukebox(task, old_dir))
|
|
|
|
return 0;
|
|
|
|
res = task->tk_msg.rpc_resp;
|
|
|
|
|
|
|
|
nfs_post_op_update_inode(old_dir, res->old_fattr);
|
|
|
|
nfs_post_op_update_inode(new_dir, res->new_fattr);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
static int
|
|
|
|
nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
|
|
|
|
{
|
|
|
|
struct nfs3_linkargs arg = {
|
|
|
|
.fromfh = NFS_FH(inode),
|
|
|
|
.tofh = NFS_FH(dir),
|
|
|
|
.toname = name->name,
|
|
|
|
.tolen = name->len
|
|
|
|
};
|
2010-04-16 20:22:49 +00:00
|
|
|
struct nfs3_linkres res;
|
2006-03-20 18:44:23 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_LINK],
|
|
|
|
.rpc_argp = &arg,
|
|
|
|
.rpc_resp = &res,
|
|
|
|
};
|
2010-04-16 20:22:49 +00:00
|
|
|
int status = -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
dprintk("NFS call link %s\n", name->name);
|
2010-04-16 20:22:49 +00:00
|
|
|
res.fattr = nfs_alloc_fattr();
|
|
|
|
res.dir_attr = nfs_alloc_fattr();
|
|
|
|
if (res.fattr == NULL || res.dir_attr == NULL)
|
|
|
|
goto out;
|
|
|
|
|
2006-03-20 18:44:23 +00:00
|
|
|
status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
|
2010-04-16 20:22:49 +00:00
|
|
|
nfs_post_op_update_inode(dir, res.dir_attr);
|
|
|
|
nfs_post_op_update_inode(inode, res.fattr);
|
|
|
|
out:
|
|
|
|
nfs_free_fattr(res.dir_attr);
|
|
|
|
nfs_free_fattr(res.fattr);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply link: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2006-08-23 00:06:23 +00:00
|
|
|
nfs3_proc_symlink(struct inode *dir, struct dentry *dentry, struct page *page,
|
|
|
|
unsigned int len, struct iattr *sattr)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2008-06-20 21:00:23 +00:00
|
|
|
struct nfs3_createdata *data;
|
|
|
|
int status = -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-08-23 00:06:23 +00:00
|
|
|
if (len > NFS3_MAXPATHLEN)
|
2005-04-16 22:20:36 +00:00
|
|
|
return -ENAMETOOLONG;
|
2006-08-23 00:06:22 +00:00
|
|
|
|
2013-09-16 14:53:17 +00:00
|
|
|
dprintk("NFS call symlink %pd\n", dentry);
|
2006-08-23 00:06:23 +00:00
|
|
|
|
2008-06-20 21:00:23 +00:00
|
|
|
data = nfs3_alloc_createdata();
|
|
|
|
if (data == NULL)
|
2006-08-23 00:06:22 +00:00
|
|
|
goto out;
|
2008-06-20 21:00:23 +00:00
|
|
|
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_SYMLINK];
|
|
|
|
data->arg.symlink.fromfh = NFS_FH(dir);
|
|
|
|
data->arg.symlink.fromname = dentry->d_name.name;
|
|
|
|
data->arg.symlink.fromlen = dentry->d_name.len;
|
|
|
|
data->arg.symlink.pages = &page;
|
|
|
|
data->arg.symlink.pathlen = len;
|
|
|
|
data->arg.symlink.sattr = sattr;
|
|
|
|
|
|
|
|
status = nfs3_do_create(dir, dentry, data);
|
|
|
|
|
|
|
|
nfs3_free_createdata(data);
|
2006-08-23 00:06:22 +00:00
|
|
|
out:
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply symlink: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
|
|
|
|
{
|
2013-12-20 13:16:53 +00:00
|
|
|
struct posix_acl *default_acl, *acl;
|
2008-06-20 21:00:23 +00:00
|
|
|
struct nfs3_createdata *data;
|
|
|
|
int status = -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2013-09-16 14:53:17 +00:00
|
|
|
dprintk("NFS call mkdir %pd\n", dentry);
|
2005-06-22 17:16:27 +00:00
|
|
|
|
2008-06-20 21:00:23 +00:00
|
|
|
data = nfs3_alloc_createdata();
|
|
|
|
if (data == NULL)
|
2005-06-22 17:16:27 +00:00
|
|
|
goto out;
|
2008-06-20 21:00:23 +00:00
|
|
|
|
2013-12-20 13:16:53 +00:00
|
|
|
status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
|
|
|
|
if (status)
|
|
|
|
goto out;
|
|
|
|
|
2008-06-20 21:00:23 +00:00
|
|
|
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKDIR];
|
|
|
|
data->arg.mkdir.fh = NFS_FH(dir);
|
|
|
|
data->arg.mkdir.name = dentry->d_name.name;
|
|
|
|
data->arg.mkdir.len = dentry->d_name.len;
|
|
|
|
data->arg.mkdir.sattr = sattr;
|
|
|
|
|
|
|
|
status = nfs3_do_create(dir, dentry, data);
|
2005-06-22 17:16:27 +00:00
|
|
|
if (status != 0)
|
2013-12-20 13:16:53 +00:00
|
|
|
goto out_release_acls;
|
2008-06-20 21:00:23 +00:00
|
|
|
|
2013-12-20 13:16:53 +00:00
|
|
|
status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
|
|
|
|
|
|
|
|
out_release_acls:
|
|
|
|
posix_acl_release(acl);
|
|
|
|
posix_acl_release(default_acl);
|
2005-06-22 17:16:27 +00:00
|
|
|
out:
|
2008-06-20 21:00:23 +00:00
|
|
|
nfs3_free_createdata(data);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply mkdir: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
|
|
|
|
{
|
2010-04-16 20:22:50 +00:00
|
|
|
struct nfs_fattr *dir_attr;
|
2005-04-16 22:20:36 +00:00
|
|
|
struct nfs3_diropargs arg = {
|
|
|
|
.fh = NFS_FH(dir),
|
|
|
|
.name = name->name,
|
|
|
|
.len = name->len
|
|
|
|
};
|
2006-03-20 18:44:23 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_RMDIR],
|
|
|
|
.rpc_argp = &arg,
|
|
|
|
};
|
2010-04-16 20:22:50 +00:00
|
|
|
int status = -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
dprintk("NFS call rmdir %s\n", name->name);
|
2010-04-16 20:22:50 +00:00
|
|
|
dir_attr = nfs_alloc_fattr();
|
|
|
|
if (dir_attr == NULL)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
msg.rpc_resp = dir_attr;
|
2006-03-20 18:44:23 +00:00
|
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
2010-04-16 20:22:50 +00:00
|
|
|
nfs_post_op_update_inode(dir, dir_attr);
|
|
|
|
nfs_free_fattr(dir_attr);
|
|
|
|
out:
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply rmdir: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* The READDIR implementation is somewhat hackish - we pass the user buffer
|
|
|
|
* to the encode function, which installs it in the receive iovec.
|
|
|
|
* The decode function itself doesn't perform any decoding, it just makes
|
|
|
|
* sure the reply is syntactically correct.
|
|
|
|
*
|
|
|
|
* Also note that this implementation handles both plain readdir and
|
|
|
|
* readdirplus.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs3_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
|
2010-10-20 19:44:37 +00:00
|
|
|
u64 cookie, struct page **pages, unsigned int count, int plus)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct inode *dir = dentry->d_inode;
|
2012-09-03 18:56:02 +00:00
|
|
|
__be32 *verf = NFS_I(dir)->cookieverf;
|
2005-04-16 22:20:36 +00:00
|
|
|
struct nfs3_readdirargs arg = {
|
|
|
|
.fh = NFS_FH(dir),
|
|
|
|
.cookie = cookie,
|
|
|
|
.verf = {verf[0], verf[1]},
|
|
|
|
.plus = plus,
|
|
|
|
.count = count,
|
2010-10-20 19:44:37 +00:00
|
|
|
.pages = pages
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
struct nfs3_readdirres res = {
|
|
|
|
.verf = verf,
|
|
|
|
.plus = plus
|
|
|
|
};
|
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_READDIR],
|
|
|
|
.rpc_argp = &arg,
|
|
|
|
.rpc_resp = &res,
|
|
|
|
.rpc_cred = cred
|
|
|
|
};
|
2010-04-16 20:22:49 +00:00
|
|
|
int status = -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
if (plus)
|
|
|
|
msg.rpc_proc = &nfs3_procedures[NFS3PROC_READDIRPLUS];
|
|
|
|
|
|
|
|
dprintk("NFS call readdir%s %d\n",
|
|
|
|
plus? "plus" : "", (unsigned int) cookie);
|
|
|
|
|
2010-04-16 20:22:49 +00:00
|
|
|
res.dir_attr = nfs_alloc_fattr();
|
|
|
|
if (res.dir_attr == NULL)
|
|
|
|
goto out;
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
|
2007-09-28 21:11:45 +00:00
|
|
|
|
|
|
|
nfs_invalidate_atime(dir);
|
2010-04-16 20:22:49 +00:00
|
|
|
nfs_refresh_inode(dir, res.dir_attr);
|
2007-09-28 21:11:45 +00:00
|
|
|
|
2010-04-16 20:22:49 +00:00
|
|
|
nfs_free_fattr(res.dir_attr);
|
|
|
|
out:
|
2010-09-21 20:55:47 +00:00
|
|
|
dprintk("NFS reply readdir%s: %d\n",
|
|
|
|
plus? "plus" : "", status);
|
2005-04-16 22:20:36 +00:00
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
|
|
|
|
dev_t rdev)
|
|
|
|
{
|
2013-12-20 13:16:53 +00:00
|
|
|
struct posix_acl *default_acl, *acl;
|
2008-06-20 21:00:23 +00:00
|
|
|
struct nfs3_createdata *data;
|
|
|
|
int status = -ENOMEM;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2013-09-16 14:53:17 +00:00
|
|
|
dprintk("NFS call mknod %pd %u:%u\n", dentry,
|
2005-04-16 22:20:36 +00:00
|
|
|
MAJOR(rdev), MINOR(rdev));
|
2005-06-22 17:16:27 +00:00
|
|
|
|
2008-06-20 21:00:23 +00:00
|
|
|
data = nfs3_alloc_createdata();
|
|
|
|
if (data == NULL)
|
2005-06-22 17:16:27 +00:00
|
|
|
goto out;
|
2008-06-20 21:00:23 +00:00
|
|
|
|
2013-12-20 13:16:53 +00:00
|
|
|
status = posix_acl_create(dir, &sattr->ia_mode, &default_acl, &acl);
|
|
|
|
if (status)
|
|
|
|
goto out;
|
|
|
|
|
2008-06-20 21:00:23 +00:00
|
|
|
data->msg.rpc_proc = &nfs3_procedures[NFS3PROC_MKNOD];
|
|
|
|
data->arg.mknod.fh = NFS_FH(dir);
|
|
|
|
data->arg.mknod.name = dentry->d_name.name;
|
|
|
|
data->arg.mknod.len = dentry->d_name.len;
|
|
|
|
data->arg.mknod.sattr = sattr;
|
|
|
|
data->arg.mknod.rdev = rdev;
|
|
|
|
|
|
|
|
switch (sattr->ia_mode & S_IFMT) {
|
|
|
|
case S_IFBLK:
|
|
|
|
data->arg.mknod.type = NF3BLK;
|
|
|
|
break;
|
|
|
|
case S_IFCHR:
|
|
|
|
data->arg.mknod.type = NF3CHR;
|
|
|
|
break;
|
|
|
|
case S_IFIFO:
|
|
|
|
data->arg.mknod.type = NF3FIFO;
|
|
|
|
break;
|
|
|
|
case S_IFSOCK:
|
|
|
|
data->arg.mknod.type = NF3SOCK;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
status = -EINVAL;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
status = nfs3_do_create(dir, dentry, data);
|
2005-06-22 17:16:27 +00:00
|
|
|
if (status != 0)
|
2013-12-20 13:16:53 +00:00
|
|
|
goto out_release_acls;
|
|
|
|
|
|
|
|
status = nfs3_proc_setacls(dentry->d_inode, acl, default_acl);
|
|
|
|
|
|
|
|
out_release_acls:
|
|
|
|
posix_acl_release(acl);
|
|
|
|
posix_acl_release(default_acl);
|
2005-06-22 17:16:27 +00:00
|
|
|
out:
|
2008-06-20 21:00:23 +00:00
|
|
|
nfs3_free_createdata(data);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply mknod: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
|
|
struct nfs_fsstat *stat)
|
|
|
|
{
|
2006-03-20 18:44:23 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_FSSTAT],
|
|
|
|
.rpc_argp = fhandle,
|
|
|
|
.rpc_resp = stat,
|
|
|
|
};
|
2005-04-16 22:20:36 +00:00
|
|
|
int status;
|
|
|
|
|
|
|
|
dprintk("NFS call fsstat\n");
|
2005-10-28 02:12:38 +00:00
|
|
|
nfs_fattr_init(stat->fattr);
|
2006-03-20 18:44:23 +00:00
|
|
|
status = rpc_call_sync(server->client, &msg, 0);
|
2010-09-21 20:55:47 +00:00
|
|
|
dprintk("NFS reply fsstat: %d\n", status);
|
2005-04-16 22:20:36 +00:00
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2008-08-19 20:34:36 +00:00
|
|
|
do_proc_fsinfo(struct rpc_clnt *client, struct nfs_fh *fhandle,
|
2005-04-16 22:20:36 +00:00
|
|
|
struct nfs_fsinfo *info)
|
|
|
|
{
|
2006-03-20 18:44:23 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_FSINFO],
|
|
|
|
.rpc_argp = fhandle,
|
|
|
|
.rpc_resp = info,
|
|
|
|
};
|
2005-04-16 22:20:36 +00:00
|
|
|
int status;
|
|
|
|
|
|
|
|
dprintk("NFS call fsinfo\n");
|
2005-10-28 02:12:38 +00:00
|
|
|
nfs_fattr_init(info->fattr);
|
2008-08-19 20:34:36 +00:00
|
|
|
status = rpc_call_sync(client, &msg, 0);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply fsinfo: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2008-08-19 20:34:36 +00:00
|
|
|
/*
|
|
|
|
* Bare-bones access to fsinfo: this is for nfs_get_root/nfs_get_sb via
|
|
|
|
* nfs_create_server
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
|
|
struct nfs_fsinfo *info)
|
|
|
|
{
|
|
|
|
int status;
|
|
|
|
|
|
|
|
status = do_proc_fsinfo(server->client, fhandle, info);
|
|
|
|
if (status && server->nfs_client->cl_rpcclient != server->client)
|
|
|
|
status = do_proc_fsinfo(server->nfs_client->cl_rpcclient, fhandle, info);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
static int
|
|
|
|
nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
|
|
|
|
struct nfs_pathconf *info)
|
|
|
|
{
|
2006-03-20 18:44:23 +00:00
|
|
|
struct rpc_message msg = {
|
|
|
|
.rpc_proc = &nfs3_procedures[NFS3PROC_PATHCONF],
|
|
|
|
.rpc_argp = fhandle,
|
|
|
|
.rpc_resp = info,
|
|
|
|
};
|
2005-04-16 22:20:36 +00:00
|
|
|
int status;
|
|
|
|
|
|
|
|
dprintk("NFS call pathconf\n");
|
2005-10-28 02:12:38 +00:00
|
|
|
nfs_fattr_init(info->fattr);
|
2006-03-20 18:44:23 +00:00
|
|
|
status = rpc_call_sync(server->client, &msg, 0);
|
2005-04-16 22:20:36 +00:00
|
|
|
dprintk("NFS reply pathconf: %d\n", status);
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
|
2014-05-06 13:12:26 +00:00
|
|
|
static int nfs3_read_done(struct rpc_task *task, struct nfs_pgio_data *data)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2012-04-20 18:47:44 +00:00
|
|
|
struct inode *inode = data->header->inode;
|
|
|
|
|
|
|
|
if (nfs3_async_handle_jukebox(task, inode))
|
2006-03-20 18:44:27 +00:00
|
|
|
return -EAGAIN;
|
2007-09-28 21:20:07 +00:00
|
|
|
|
2012-04-20 18:47:44 +00:00
|
|
|
nfs_invalidate_atime(inode);
|
|
|
|
nfs_refresh_inode(inode, &data->fattr);
|
2006-03-20 18:44:27 +00:00
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2014-05-06 13:12:26 +00:00
|
|
|
static void nfs3_proc_read_setup(struct nfs_pgio_data *data, struct rpc_message *msg)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2007-07-14 19:40:00 +00:00
|
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_READ];
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2014-05-06 13:12:31 +00:00
|
|
|
static int nfs3_proc_pgio_rpc_prepare(struct rpc_task *task, struct nfs_pgio_data *data)
|
2012-03-19 18:54:40 +00:00
|
|
|
{
|
|
|
|
rpc_call_start(task);
|
2013-09-04 07:04:49 +00:00
|
|
|
return 0;
|
2012-03-19 18:54:40 +00:00
|
|
|
}
|
|
|
|
|
2014-05-06 13:12:26 +00:00
|
|
|
static int nfs3_write_done(struct rpc_task *task, struct nfs_pgio_data *data)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2012-04-20 18:47:44 +00:00
|
|
|
struct inode *inode = data->header->inode;
|
|
|
|
|
|
|
|
if (nfs3_async_handle_jukebox(task, inode))
|
2006-03-20 18:44:27 +00:00
|
|
|
return -EAGAIN;
|
2005-04-16 22:20:36 +00:00
|
|
|
if (task->tk_status >= 0)
|
2012-04-20 18:47:44 +00:00
|
|
|
nfs_post_op_update_inode_force_wcc(inode, data->res.fattr);
|
2006-03-20 18:44:27 +00:00
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2014-05-06 13:12:26 +00:00
|
|
|
static void nfs3_proc_write_setup(struct nfs_pgio_data *data, struct rpc_message *msg)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2007-07-14 19:40:00 +00:00
|
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_WRITE];
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2012-04-20 18:47:39 +00:00
|
|
|
static void nfs3_proc_commit_rpc_prepare(struct rpc_task *task, struct nfs_commit_data *data)
|
|
|
|
{
|
|
|
|
rpc_call_start(task);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int nfs3_commit_done(struct rpc_task *task, struct nfs_commit_data *data)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-03-20 18:44:14 +00:00
|
|
|
if (nfs3_async_handle_jukebox(task, data->inode))
|
2006-03-20 18:44:27 +00:00
|
|
|
return -EAGAIN;
|
2007-10-08 18:10:31 +00:00
|
|
|
nfs_refresh_inode(data->inode, data->res.fattr);
|
2006-03-20 18:44:27 +00:00
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2012-04-20 18:47:39 +00:00
|
|
|
static void nfs3_proc_commit_setup(struct nfs_commit_data *data, struct rpc_message *msg)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2007-07-14 19:40:00 +00:00
|
|
|
msg->rpc_proc = &nfs3_procedures[NFS3PROC_COMMIT];
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nfs3_proc_lock(struct file *filp, int cmd, struct file_lock *fl)
|
|
|
|
{
|
2013-01-23 22:07:38 +00:00
|
|
|
struct inode *inode = file_inode(filp);
|
2008-01-11 22:09:59 +00:00
|
|
|
|
|
|
|
return nlmclnt_proc(NFS_SERVER(inode)->nlm_host, cmd, fl);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2012-06-20 19:53:43 +00:00
|
|
|
static int nfs3_have_delegation(struct inode *inode, fmode_t flags)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-06-20 19:53:44 +00:00
|
|
|
static int nfs3_return_delegation(struct inode *inode)
|
|
|
|
{
|
|
|
|
nfs_wb_all(inode);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-07-16 20:39:11 +00:00
|
|
|
static const struct inode_operations nfs3_dir_inode_operations = {
|
|
|
|
.create = nfs_create,
|
|
|
|
.lookup = nfs_lookup,
|
|
|
|
.link = nfs_link,
|
|
|
|
.unlink = nfs_unlink,
|
|
|
|
.symlink = nfs_symlink,
|
|
|
|
.mkdir = nfs_mkdir,
|
|
|
|
.rmdir = nfs_rmdir,
|
|
|
|
.mknod = nfs_mknod,
|
|
|
|
.rename = nfs_rename,
|
|
|
|
.permission = nfs_permission,
|
|
|
|
.getattr = nfs_getattr,
|
|
|
|
.setattr = nfs_setattr,
|
2014-01-30 14:01:52 +00:00
|
|
|
#ifdef CONFIG_NFS_V3_ACL
|
2014-06-18 09:07:03 +00:00
|
|
|
.listxattr = nfs3_listxattr,
|
2013-12-20 13:16:53 +00:00
|
|
|
.getxattr = generic_getxattr,
|
|
|
|
.setxattr = generic_setxattr,
|
|
|
|
.removexattr = generic_removexattr,
|
|
|
|
.get_acl = nfs3_get_acl,
|
|
|
|
.set_acl = nfs3_set_acl,
|
|
|
|
#endif
|
2012-07-16 20:39:11 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
static const struct inode_operations nfs3_file_inode_operations = {
|
|
|
|
.permission = nfs_permission,
|
|
|
|
.getattr = nfs_getattr,
|
|
|
|
.setattr = nfs_setattr,
|
2014-01-30 14:01:52 +00:00
|
|
|
#ifdef CONFIG_NFS_V3_ACL
|
2014-06-18 09:07:03 +00:00
|
|
|
.listxattr = nfs3_listxattr,
|
2013-12-20 13:16:53 +00:00
|
|
|
.getxattr = generic_getxattr,
|
|
|
|
.setxattr = generic_setxattr,
|
|
|
|
.removexattr = generic_removexattr,
|
|
|
|
.get_acl = nfs3_get_acl,
|
|
|
|
.set_acl = nfs3_set_acl,
|
|
|
|
#endif
|
2012-07-16 20:39:11 +00:00
|
|
|
};
|
|
|
|
|
2006-08-23 00:06:11 +00:00
|
|
|
const struct nfs_rpc_ops nfs_v3_clientops = {
|
2005-04-16 22:20:36 +00:00
|
|
|
.version = 3, /* protocol version */
|
|
|
|
.dentry_ops = &nfs_dentry_operations,
|
2005-06-22 17:16:27 +00:00
|
|
|
.dir_inode_ops = &nfs3_dir_inode_operations,
|
|
|
|
.file_inode_ops = &nfs3_file_inode_operations,
|
nfs: when attempting to open a directory, fall back on normal lookup (try #5)
commit d953126 changed how nfs_atomic_lookup handles an -EISDIR return
from an OPEN call. Prior to that patch, that caused the client to fall
back to doing a normal lookup. When that patch went in, the code began
returning that error to userspace. The d_revalidate codepath however
never had the corresponding change, so it was still possible to end up
with a NULL ctx->state pointer after that.
That patch caused a regression. When we attempt to open a directory that
does not have a cached dentry, that open now errors out with EISDIR. If
you attempt the same open with a cached dentry, it will succeed.
Fix this by reverting the change in nfs_atomic_lookup and allowing
attempts to open directories to fall back to a normal lookup
Also, add a NFSv4-specific f_ops->open routine that just returns
-ENOTDIR. This should never be called if things are working properly,
but if it ever is, then the dprintk may help in debugging.
To facilitate this, a new file_operations field is also added to the
nfs_rpc_ops struct.
Cc: stable@kernel.org
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
2011-11-04 17:31:21 +00:00
|
|
|
.file_ops = &nfs_file_operations,
|
2005-04-16 22:20:36 +00:00
|
|
|
.getroot = nfs3_proc_get_root,
|
2012-04-27 17:27:45 +00:00
|
|
|
.submount = nfs_submount,
|
2012-07-30 20:05:18 +00:00
|
|
|
.try_mount = nfs_try_mount,
|
2005-04-16 22:20:36 +00:00
|
|
|
.getattr = nfs3_proc_getattr,
|
|
|
|
.setattr = nfs3_proc_setattr,
|
|
|
|
.lookup = nfs3_proc_lookup,
|
|
|
|
.access = nfs3_proc_access,
|
|
|
|
.readlink = nfs3_proc_readlink,
|
|
|
|
.create = nfs3_proc_create,
|
|
|
|
.remove = nfs3_proc_remove,
|
|
|
|
.unlink_setup = nfs3_proc_unlink_setup,
|
2012-03-19 18:54:41 +00:00
|
|
|
.unlink_rpc_prepare = nfs3_proc_unlink_rpc_prepare,
|
2005-04-16 22:20:36 +00:00
|
|
|
.unlink_done = nfs3_proc_unlink_done,
|
2010-09-17 21:31:57 +00:00
|
|
|
.rename_setup = nfs3_proc_rename_setup,
|
2012-03-19 18:54:42 +00:00
|
|
|
.rename_rpc_prepare = nfs3_proc_rename_rpc_prepare,
|
2010-09-17 21:31:57 +00:00
|
|
|
.rename_done = nfs3_proc_rename_done,
|
2005-04-16 22:20:36 +00:00
|
|
|
.link = nfs3_proc_link,
|
|
|
|
.symlink = nfs3_proc_symlink,
|
|
|
|
.mkdir = nfs3_proc_mkdir,
|
|
|
|
.rmdir = nfs3_proc_rmdir,
|
|
|
|
.readdir = nfs3_proc_readdir,
|
|
|
|
.mknod = nfs3_proc_mknod,
|
|
|
|
.statfs = nfs3_proc_statfs,
|
|
|
|
.fsinfo = nfs3_proc_fsinfo,
|
|
|
|
.pathconf = nfs3_proc_pathconf,
|
|
|
|
.decode_dirent = nfs3_decode_dirent,
|
2014-05-06 13:12:31 +00:00
|
|
|
.pgio_rpc_prepare = nfs3_proc_pgio_rpc_prepare,
|
2005-04-16 22:20:36 +00:00
|
|
|
.read_setup = nfs3_proc_read_setup,
|
2006-03-20 18:44:27 +00:00
|
|
|
.read_done = nfs3_read_done,
|
2005-04-16 22:20:36 +00:00
|
|
|
.write_setup = nfs3_proc_write_setup,
|
2006-03-20 18:44:27 +00:00
|
|
|
.write_done = nfs3_write_done,
|
2005-04-16 22:20:36 +00:00
|
|
|
.commit_setup = nfs3_proc_commit_setup,
|
2012-04-20 18:47:39 +00:00
|
|
|
.commit_rpc_prepare = nfs3_proc_commit_rpc_prepare,
|
2006-03-20 18:44:27 +00:00
|
|
|
.commit_done = nfs3_commit_done,
|
2005-04-16 22:20:36 +00:00
|
|
|
.lock = nfs3_proc_lock,
|
2013-12-20 13:16:53 +00:00
|
|
|
.clear_acl_cache = forget_all_cached_acls,
|
2009-03-19 19:35:50 +00:00
|
|
|
.close_context = nfs_close_context,
|
2012-06-20 19:53:43 +00:00
|
|
|
.have_delegation = nfs3_have_delegation,
|
2012-06-20 19:53:44 +00:00
|
|
|
.return_delegation = nfs3_return_delegation,
|
2012-06-20 19:53:46 +00:00
|
|
|
.alloc_client = nfs_alloc_client,
|
2011-03-01 01:34:08 +00:00
|
|
|
.init_client = nfs_init_client,
|
2012-06-20 19:53:45 +00:00
|
|
|
.free_client = nfs_free_client,
|
2012-07-30 20:05:19 +00:00
|
|
|
.create_server = nfs3_create_server,
|
|
|
|
.clone_server = nfs3_clone_server,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|