mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-30 07:34:12 +08:00
24c8dbbb5f
Generalise the nfs_client structure by:
(1) Moving nfs_client to a more general place (nfs_fs_sb.h).
(2) Renaming its maintenance routines to be non-NFS4 specific.
(3) Move those maintenance routines to a new non-NFS4 specific file (client.c)
and move the declarations to internal.h.
(4) Make nfs_find/get_client() take a full sockaddr_in to include the port
number (will be required for NFS2/3).
(5) Make nfs_find/get_client() take the NFS protocol version (again will be
required to differentiate NFS2, 3 & 4 client records).
Also:
(6) Make nfs_client construction proceed akin to inodes, marking them as under
construction and providing a function to indicate completion.
(7) Make nfs_get_client() wait interruptibly if it finds a client that it can
share, but that client is currently being constructed.
(8) Make nfs4_create_client() use (6) and (7) instead of locking cl_sem.
Signed-Off-By: David Howells <dhowells@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
/*
|
|
* linux/fs/nfs/callback_proc.c
|
|
*
|
|
* Copyright (C) 2004 Trond Myklebust
|
|
*
|
|
* NFSv4 callback procedures
|
|
*/
|
|
#include <linux/nfs4.h>
|
|
#include <linux/nfs_fs.h>
|
|
#include "nfs4_fs.h"
|
|
#include "callback.h"
|
|
#include "delegation.h"
|
|
#include "internal.h"
|
|
|
|
#define NFSDBG_FACILITY NFSDBG_CALLBACK
|
|
|
|
unsigned nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res)
|
|
{
|
|
struct nfs_client *clp;
|
|
struct nfs_delegation *delegation;
|
|
struct nfs_inode *nfsi;
|
|
struct inode *inode;
|
|
|
|
res->bitmap[0] = res->bitmap[1] = 0;
|
|
res->status = htonl(NFS4ERR_BADHANDLE);
|
|
clp = nfs_find_client(args->addr, 4);
|
|
if (clp == NULL)
|
|
goto out;
|
|
inode = nfs_delegation_find_inode(clp, &args->fh);
|
|
if (inode == NULL)
|
|
goto out_putclient;
|
|
nfsi = NFS_I(inode);
|
|
down_read(&nfsi->rwsem);
|
|
delegation = nfsi->delegation;
|
|
if (delegation == NULL || (delegation->type & FMODE_WRITE) == 0)
|
|
goto out_iput;
|
|
res->size = i_size_read(inode);
|
|
res->change_attr = delegation->change_attr;
|
|
if (nfsi->npages != 0)
|
|
res->change_attr++;
|
|
res->ctime = inode->i_ctime;
|
|
res->mtime = inode->i_mtime;
|
|
res->bitmap[0] = (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) &
|
|
args->bitmap[0];
|
|
res->bitmap[1] = (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) &
|
|
args->bitmap[1];
|
|
res->status = 0;
|
|
out_iput:
|
|
up_read(&nfsi->rwsem);
|
|
iput(inode);
|
|
out_putclient:
|
|
nfs_put_client(clp);
|
|
out:
|
|
dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res->status));
|
|
return res->status;
|
|
}
|
|
|
|
unsigned nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
|
|
{
|
|
struct nfs_client *clp;
|
|
struct inode *inode;
|
|
unsigned res;
|
|
|
|
res = htonl(NFS4ERR_BADHANDLE);
|
|
clp = nfs_find_client(args->addr, 4);
|
|
if (clp == NULL)
|
|
goto out;
|
|
inode = nfs_delegation_find_inode(clp, &args->fh);
|
|
if (inode == NULL)
|
|
goto out_putclient;
|
|
/* Set up a helper thread to actually return the delegation */
|
|
switch(nfs_async_inode_return_delegation(inode, &args->stateid)) {
|
|
case 0:
|
|
res = 0;
|
|
break;
|
|
case -ENOENT:
|
|
res = htonl(NFS4ERR_BAD_STATEID);
|
|
break;
|
|
default:
|
|
res = htonl(NFS4ERR_RESOURCE);
|
|
}
|
|
iput(inode);
|
|
out_putclient:
|
|
nfs_put_client(clp);
|
|
out:
|
|
dprintk("%s: exit with status = %d\n", __FUNCTION__, ntohl(res));
|
|
return res;
|
|
}
|