forked from luck/tmp_suning_uos_patched
d49433e1e3
Currently, just free up any referring calls information.
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[nfs41: fix csr_{,target}highestslotid]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
132 lines
3.3 KiB
C
132 lines
3.3 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"
|
|
|
|
#ifdef NFS_DEBUG
|
|
#define NFSDBG_FACILITY NFSDBG_CALLBACK
|
|
#endif
|
|
|
|
__be32 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;
|
|
|
|
dprintk("NFS: GETATTR callback request from %s\n",
|
|
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
|
|
|
|
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", __func__, ntohl(res->status));
|
|
return res->status;
|
|
}
|
|
|
|
__be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy)
|
|
{
|
|
struct nfs_client *clp;
|
|
struct inode *inode;
|
|
__be32 res;
|
|
|
|
res = htonl(NFS4ERR_BADHANDLE);
|
|
clp = nfs_find_client(args->addr, 4);
|
|
if (clp == NULL)
|
|
goto out;
|
|
|
|
dprintk("NFS: RECALL callback request from %s\n",
|
|
rpc_peeraddr2str(clp->cl_rpcclient, RPC_DISPLAY_ADDR));
|
|
|
|
do {
|
|
struct nfs_client *prev = clp;
|
|
|
|
inode = nfs_delegation_find_inode(clp, &args->fh);
|
|
if (inode != NULL) {
|
|
/* 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:
|
|
if (res != 0)
|
|
res = htonl(NFS4ERR_BAD_STATEID);
|
|
break;
|
|
default:
|
|
res = htonl(NFS4ERR_RESOURCE);
|
|
}
|
|
iput(inode);
|
|
}
|
|
clp = nfs_find_client_next(prev);
|
|
nfs_put_client(prev);
|
|
} while (clp != NULL);
|
|
out:
|
|
dprintk("%s: exit with status = %d\n", __func__, ntohl(res));
|
|
return res;
|
|
}
|
|
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
|
|
/* FIXME: validate args->cbs_{sequence,slot}id */
|
|
/* FIXME: referring calls should be processed */
|
|
unsigned nfs4_callback_sequence(struct cb_sequenceargs *args,
|
|
struct cb_sequenceres *res)
|
|
{
|
|
int i;
|
|
unsigned status = 0;
|
|
|
|
for (i = 0; i < args->csa_nrclists; i++)
|
|
kfree(args->csa_rclists[i].rcl_refcalls);
|
|
kfree(args->csa_rclists);
|
|
|
|
memcpy(&res->csr_sessionid, &args->csa_sessionid,
|
|
sizeof(res->csr_sessionid));
|
|
res->csr_sequenceid = args->csa_sequenceid;
|
|
res->csr_slotid = args->csa_slotid;
|
|
res->csr_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
|
|
res->csr_target_highestslotid = NFS41_BC_MAX_CALLBACKS - 1;
|
|
|
|
dprintk("%s: exit with status = %d\n", __func__, ntohl(status));
|
|
res->csr_status = status;
|
|
return status;
|
|
}
|
|
|
|
#endif /* CONFIG_NFS_V4_1 */
|