Initial import

1 files changed, 241 insertions, 0 deletions

diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
new file mode 100644
index 000000000..5e1273d4d
--- /dev/null
+++ b/include/linux/nfs_fs_sb.h
@@ -0,0 +1,241 @@
+#ifndef _NFS_FS_SB
+#define _NFS_FS_SB
+
+#include <linux/list.h>
+#include <linux/backing-dev.h>
+#include <linux/idr.h>
+#include <linux/wait.h>
+#include <linux/nfs_xdr.h>
+#include <linux/sunrpc/xprt.h>
+
+#include <linux/atomic.h>
+
+struct nfs4_session;
+struct nfs_iostats;
+struct nlm_host;
+struct nfs4_sequence_args;
+struct nfs4_sequence_res;
+struct nfs_server;
+struct nfs4_minor_version_ops;
+struct nfs41_server_scope;
+struct nfs41_impl_id;
+
+/*
+ * The nfs_client identifies our client state to the server.
+ */
+struct nfs_client {
+	atomic_t		cl_count;
+	atomic_t		cl_mds_count;
+	int			cl_cons_state;	/* current construction state (-ve: init error) */
+#define NFS_CS_READY		0		/* ready to be used */
+#define NFS_CS_INITING		1		/* busy initialising */
+#define NFS_CS_SESSION_INITING	2		/* busy initialising  session */
+	unsigned long		cl_res_state;	/* NFS resources state */
+#define NFS_CS_CALLBACK		1		/* - callback started */
+#define NFS_CS_IDMAP		2		/* - idmap started */
+#define NFS_CS_RENEWD		3		/* - renewd started */
+#define NFS_CS_STOP_RENEW	4		/* no more state to renew */
+#define NFS_CS_CHECK_LEASE_TIME	5		/* need to check lease time */
+	unsigned long		cl_flags;	/* behavior switches */
+#define NFS_CS_NORESVPORT	0		/* - use ephemeral src port */
+#define NFS_CS_DISCRTRY		1		/* - disconnect on RPC retry */
+#define NFS_CS_MIGRATION	2		/* - transparent state migr */
+#define NFS_CS_INFINITE_SLOTS	3		/* - don't limit TCP slots */
+#define NFS_CS_NO_RETRANS_TIMEOUT	4	/* - Disable retransmit timeouts */
+	struct sockaddr_storage	cl_addr;	/* server identifier */
+	size_t			cl_addrlen;
+	char *			cl_hostname;	/* hostname of server */
+	char *			cl_acceptor;	/* GSSAPI acceptor name */
+	struct list_head	cl_share_link;	/* link in global client list */
+	struct list_head	cl_superblocks;	/* List of nfs_server structs */
+
+	struct rpc_clnt *	cl_rpcclient;
+	const struct nfs_rpc_ops *rpc_ops;	/* NFS protocol vector */
+	int			cl_proto;	/* Network transport protocol */
+	struct nfs_subversion *	cl_nfs_mod;	/* pointer to nfs version module */
+
+	u32			cl_minorversion;/* NFSv4 minorversion */
+	struct rpc_cred		*cl_machine_cred;
+
+#if IS_ENABLED(CONFIG_NFS_V4)
+	struct list_head	cl_ds_clients; /* auth flavor data servers */
+	u64			cl_clientid;	/* constant */
+	nfs4_verifier		cl_confirm;	/* Clientid verifier */
+	unsigned long		cl_state;
+
+	spinlock_t		cl_lock;
+
+	unsigned long		cl_lease_time;
+	unsigned long		cl_last_renewal;
+	struct delayed_work	cl_renewd;
+
+	struct rpc_wait_queue	cl_rpcwaitq;
+
+	/* idmapper */
+	struct idmap *		cl_idmap;
+
+	/* Client owner identifier */
+	const char *		cl_owner_id;
+
+	u32			cl_cb_ident;	/* v4.0 callback identifier */
+	const struct nfs4_minor_version_ops *cl_mvops;
+	unsigned long		cl_mig_gen;
+
+	/* NFSv4.0 transport blocking */
+	struct nfs4_slot_table	*cl_slot_tbl;
+
+	/* The sequence id to use for the next CREATE_SESSION */
+	u32			cl_seqid;
+	/* The flags used for obtaining the clientid during EXCHANGE_ID */
+	u32			cl_exchange_flags;
+	struct nfs4_session	*cl_session;	/* shared session */
+	bool			cl_preserve_clid;
+	struct nfs41_server_owner *cl_serverowner;
+	struct nfs41_server_scope *cl_serverscope;
+	struct nfs41_impl_id	*cl_implid;
+	/* nfs 4.1+ state protection modes: */
+	unsigned long		cl_sp4_flags;
+#define NFS_SP4_MACH_CRED_MINIMAL  1	/* Minimal sp4_mach_cred - state ops
+					 * must use machine cred */
+#define NFS_SP4_MACH_CRED_CLEANUP  2	/* CLOSE and LOCKU */
+#define NFS_SP4_MACH_CRED_SECINFO  3	/* SECINFO and SECINFO_NO_NAME */
+#define NFS_SP4_MACH_CRED_STATEID  4	/* TEST_STATEID and FREE_STATEID */
+#define NFS_SP4_MACH_CRED_WRITE    5	/* WRITE */
+#define NFS_SP4_MACH_CRED_COMMIT   6	/* COMMIT */
+#endif /* CONFIG_NFS_V4 */
+
+	/* Our own IP address, as a null-terminated string.
+	 * This is used to generate the mv0 callback address.
+	 */
+	char			cl_ipaddr[48];
+
+#ifdef CONFIG_NFS_FSCACHE
+	struct fscache_cookie	*fscache;	/* client index cache cookie */
+#endif
+
+	struct net		*cl_net;
+};
+
+/*
+ * NFS client parameters stored in the superblock.
+ */
+struct nfs_server {
+	struct nfs_client *	nfs_client;	/* shared client and NFS4 state */
+	struct list_head	client_link;	/* List of other nfs_server structs
+						 * that share the same client
+						 */
+	struct list_head	master_link;	/* link in master servers list */
+	struct rpc_clnt *	client;		/* RPC client handle */
+	struct rpc_clnt *	client_acl;	/* ACL RPC client handle */
+	struct nlm_host		*nlm_host;	/* NLM client handle */
+	struct nfs_iostats __percpu *io_stats;	/* I/O statistics */
+	struct backing_dev_info	backing_dev_info;
+	atomic_long_t		writeback;	/* number of writeback pages */
+	int			flags;		/* various flags */
+	unsigned int		caps;		/* server capabilities */
+	unsigned int		rsize;		/* read size */
+	unsigned int		rpages;		/* read size (in pages) */
+	unsigned int		wsize;		/* write size */
+	unsigned int		wpages;		/* write size (in pages) */
+	unsigned int		wtmult;		/* server disk block size */
+	unsigned int		dtsize;		/* readdir size */
+	unsigned short		port;		/* "port=" setting */
+	unsigned int		bsize;		/* server block size */
+	unsigned int		acregmin;	/* attr cache timeouts */
+	unsigned int		acregmax;
+	unsigned int		acdirmin;
+	unsigned int		acdirmax;
+	unsigned int		namelen;
+	unsigned int		options;	/* extra options enabled by mount */
+#define NFS_OPTION_FSCACHE	0x00000001	/* - local caching enabled */
+#define NFS_OPTION_MIGRATION	0x00000002	/* - NFSv4 migration enabled */
+
+	struct nfs_fsid		fsid;
+	__u64			maxfilesize;	/* maximum file size */
+	struct timespec		time_delta;	/* smallest time granularity */
+	unsigned long		mount_time;	/* when this fs was mounted */
+	struct super_block	*super;		/* VFS super block */
+	dev_t			s_dev;		/* superblock dev numbers */
+	struct nfs_auth_info	auth_info;	/* parsed auth flavors */
+
+#ifdef CONFIG_NFS_FSCACHE
+	struct nfs_fscache_key	*fscache_key;	/* unique key for superblock */
+	struct fscache_cookie	*fscache;	/* superblock cookie */
+#endif
+
+	u32			pnfs_blksize;	/* layout_blksize attr */
+#if IS_ENABLED(CONFIG_NFS_V4)
+	u32			attr_bitmask[3];/* V4 bitmask representing the set
+						   of attributes supported on this
+						   filesystem */
+	u32			attr_bitmask_nl[3];
+						/* V4 bitmask representing the
+						   set of attributes supported
+						   on this filesystem excluding
+						   the label support bit. */
+	u32			cache_consistency_bitmask[3];
+						/* V4 bitmask representing the subset
+						   of change attribute, size, ctime
+						   and mtime attributes supported by
+						   the server */
+	u32			acl_bitmask;	/* V4 bitmask representing the ACEs
+						   that are supported on this
+						   filesystem */
+	u32			fh_expire_type;	/* V4 bitmask representing file
+						   handle volatility type for
+						   this filesystem */
+	struct pnfs_layoutdriver_type  *pnfs_curr_ld; /* Active layout driver */
+	struct rpc_wait_queue	roc_rpcwaitq;
+	void			*pnfs_ld_data;	/* per mount point data */
+
+	/* the following fields are protected by nfs_client->cl_lock */
+	struct rb_root		state_owners;
+#endif
+	struct ida		openowner_id;
+	struct ida		lockowner_id;
+	struct list_head	state_owners_lru;
+	struct list_head	layouts;
+	struct list_head	delegations;
+
+	unsigned long		mig_gen;
+	unsigned long		mig_status;
+#define NFS_MIG_IN_TRANSITION		(1)
+#define NFS_MIG_FAILED			(2)
+
+	void (*destroy)(struct nfs_server *);
+
+	atomic_t active; /* Keep trace of any activity to this server */
+
+	/* mountd-related mount options */
+	struct sockaddr_storage	mountd_address;
+	size_t			mountd_addrlen;
+	u32			mountd_version;
+	unsigned short		mountd_port;
+	unsigned short		mountd_protocol;
+};
+
+/* Server capabilities */
+#define NFS_CAP_READDIRPLUS	(1U << 0)
+#define NFS_CAP_HARDLINKS	(1U << 1)
+#define NFS_CAP_SYMLINKS	(1U << 2)
+#define NFS_CAP_ACLS		(1U << 3)
+#define NFS_CAP_ATOMIC_OPEN	(1U << 4)
+#define NFS_CAP_CHANGE_ATTR	(1U << 5)
+#define NFS_CAP_FILEID		(1U << 6)
+#define NFS_CAP_MODE		(1U << 7)
+#define NFS_CAP_NLINK		(1U << 8)
+#define NFS_CAP_OWNER		(1U << 9)
+#define NFS_CAP_OWNER_GROUP	(1U << 10)
+#define NFS_CAP_ATIME		(1U << 11)
+#define NFS_CAP_CTIME		(1U << 12)
+#define NFS_CAP_MTIME		(1U << 13)
+#define NFS_CAP_POSIX_LOCK	(1U << 14)
+#define NFS_CAP_UIDGID_NOMAP	(1U << 15)
+#define NFS_CAP_STATEID_NFSV41	(1U << 16)
+#define NFS_CAP_ATOMIC_OPEN_V1	(1U << 17)
+#define NFS_CAP_SECURITY_LABEL	(1U << 18)
+#define NFS_CAP_SEEK		(1U << 19)
+#define NFS_CAP_ALLOCATE	(1U << 20)
+#define NFS_CAP_DEALLOCATE	(1U << 21)
+
+#endif