82 lines
2.0 KiB
C
82 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* include/linux/nfs_ssc.h
|
|
*
|
|
* Author: Dai Ngo <dai.ngo@oracle.com>
|
|
*
|
|
* Copyright (c) 2020, Oracle and/or its affiliates.
|
|
*/
|
|
|
|
#include <linux/nfs_fs.h>
|
|
#include <linux/sunrpc/svc.h>
|
|
|
|
extern struct nfs_ssc_client_ops_tbl nfs_ssc_client_tbl;
|
|
|
|
/*
|
|
* NFS_V4
|
|
*/
|
|
struct nfs4_ssc_client_ops {
|
|
struct file *(*sco_open)(struct vfsmount *ss_mnt,
|
|
struct nfs_fh *src_fh, nfs4_stateid *stateid);
|
|
void (*sco_close)(struct file *filep);
|
|
};
|
|
|
|
/*
|
|
* NFS_FS
|
|
*/
|
|
struct nfs_ssc_client_ops {
|
|
void (*sco_sb_deactive)(struct super_block *sb);
|
|
};
|
|
|
|
struct nfs_ssc_client_ops_tbl {
|
|
const struct nfs4_ssc_client_ops *ssc_nfs4_ops;
|
|
const struct nfs_ssc_client_ops *ssc_nfs_ops;
|
|
};
|
|
|
|
extern void nfs42_ssc_register_ops(void);
|
|
extern void nfs42_ssc_unregister_ops(void);
|
|
|
|
extern void nfs42_ssc_register(const struct nfs4_ssc_client_ops *ops);
|
|
extern void nfs42_ssc_unregister(const struct nfs4_ssc_client_ops *ops);
|
|
|
|
#ifdef CONFIG_NFSD_V4_2_INTER_SSC
|
|
static inline struct file *nfs42_ssc_open(struct vfsmount *ss_mnt,
|
|
struct nfs_fh *src_fh, nfs4_stateid *stateid)
|
|
{
|
|
if (nfs_ssc_client_tbl.ssc_nfs4_ops)
|
|
return (*nfs_ssc_client_tbl.ssc_nfs4_ops->sco_open)(ss_mnt, src_fh, stateid);
|
|
return ERR_PTR(-EIO);
|
|
}
|
|
|
|
static inline void nfs42_ssc_close(struct file *filep)
|
|
{
|
|
if (nfs_ssc_client_tbl.ssc_nfs4_ops)
|
|
(*nfs_ssc_client_tbl.ssc_nfs4_ops->sco_close)(filep);
|
|
}
|
|
#endif
|
|
|
|
struct nfsd4_ssc_umount_item {
|
|
struct list_head nsui_list;
|
|
bool nsui_busy;
|
|
/*
|
|
* nsui_refcnt inited to 2, 1 on list and 1 for consumer. Entry
|
|
* is removed when refcnt drops to 1 and nsui_expire expires.
|
|
*/
|
|
refcount_t nsui_refcnt;
|
|
unsigned long nsui_expire;
|
|
struct vfsmount *nsui_vfsmount;
|
|
char nsui_ipaddr[RPC_MAX_ADDRBUFLEN + 1];
|
|
};
|
|
|
|
/*
|
|
* NFS_FS
|
|
*/
|
|
extern void nfs_ssc_register(const struct nfs_ssc_client_ops *ops);
|
|
extern void nfs_ssc_unregister(const struct nfs_ssc_client_ops *ops);
|
|
|
|
static inline void nfs_do_sb_deactive(struct super_block *sb)
|
|
{
|
|
if (nfs_ssc_client_tbl.ssc_nfs_ops)
|
|
(*nfs_ssc_client_tbl.ssc_nfs_ops->sco_sb_deactive)(sb);
|
|
}
|