ab7017a3a0
This patch adds in the code to track multiple versions of the NFS protocol. I created default structures for v2, v3 and v4 so that each version can continue to work while I convert them into kernel modules. I also removed the const parameter from the rpc_version array so that I can change it at runtime. Signed-off-by: Bryan Schumaker <bjschuma@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
/*
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* Copyright (c) 2012 Netapp, Inc. All rights reserved.
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*
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* Function and structures exported by the NFS module
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* for use by NFS version-specific modules.
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*/
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#ifndef __LINUX_INTERNAL_NFS_H
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#define __LINUX_INTERNAL_NFS_H
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#include <linux/fs.h>
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#include <linux/sunrpc/sched.h>
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#include <linux/nfs_xdr.h>
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struct nfs_subversion {
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struct module *owner; /* THIS_MODULE pointer */
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struct file_system_type *nfs_fs; /* NFS filesystem type */
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const struct rpc_version *rpc_vers; /* NFS version information */
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const struct nfs_rpc_ops *rpc_ops; /* NFS operations */
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struct list_head list; /* List of NFS versions */
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};
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int nfs_register_versions(void);
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void nfs_unregister_versions(void);
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#ifdef CONFIG_NFS_V2
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int init_nfs_v2(void);
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void exit_nfs_v2(void);
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#else /* CONFIG_NFS_V2 */
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static inline int __init init_nfs_v2(void)
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{
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return 0;
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}
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static inline void exit_nfs_v2(void)
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{
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}
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#endif /* CONFIG_NFS_V2 */
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#ifdef CONFIG_NFS_V3
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int init_nfs_v3(void);
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void exit_nfs_v3(void);
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#else /* CONFIG_NFS_V3 */
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static inline int __init init_nfs_v3(void)
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{
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return 0;
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}
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static inline void exit_nfs_v3(void)
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{
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}
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#endif /* CONFIG_NFS_V3 */
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#ifdef CONFIG_NFS_V4
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int init_nfs_v4(void);
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void exit_nfs_v4(void);
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#else /* CONFIG_NFS_V4 */
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static inline int __init init_nfs_v4(void)
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{
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return 0;
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}
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static inline void exit_nfs_v4(void)
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{
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}
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#endif /* CONFIG_NFS_V4 */
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struct nfs_subversion *get_nfs_version(unsigned int);
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void put_nfs_version(struct nfs_subversion *);
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void register_nfs_version(struct nfs_subversion *);
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void unregister_nfs_version(struct nfs_subversion *);
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#endif /* __LINUX_INTERNAL_NFS_H */
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