[linux-block.git] / include / linux / nfs_fs_sb.h

/* SPDX-License-Identifier: GPL-2.0 */
#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>
#include <linux/refcount.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 {
	refcount_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 */
#define NFS_CS_TSM_POSSIBLE	5		/* - Maybe state migration */
#define NFS_CS_NOPING		6		/* - don't ping on connect */
#define NFS_CS_DS		7		/* - Server is a DS */
#define NFS_CS_REUSEPORT	8		/* - reuse src port on reconnect */
	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 */
	unsigned int		cl_nconnect;	/* Number of connections */
	unsigned int		cl_max_connect; /* max number of xprts allowed */
	const char *		cl_principal;	/* used for machine cred */
	struct xprtsec_parms	cl_xprtsec;	/* xprt security policy */

#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 */
#define NFS_SP4_MACH_CRED_PNFS_CLEANUP  7 /* LAYOUTRETURN */
#if IS_ENABLED(CONFIG_NFS_V4_1)
	wait_queue_head_t	cl_lock_waitq;
#endif /* CONFIG_NFS_V4_1 */
#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];
	struct net		*cl_net;
	struct list_head	pending_cb_stateids;
};

/*
 * 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 */
	atomic_long_t		writeback;	/* number of writeback pages */
	unsigned int		write_congested;/* flag set when writeback gets too high */
	unsigned int		flags;		/* various flags */

/* The following are for internal use only. Also see uapi/linux/nfs_mount.h */
#define NFS_MOUNT_LOOKUP_CACHE_NONEG	0x10000
#define NFS_MOUNT_LOOKUP_CACHE_NONE	0x20000
#define NFS_MOUNT_NORESVPORT		0x40000
#define NFS_MOUNT_LEGACY_INTERFACE	0x80000
#define NFS_MOUNT_LOCAL_FLOCK		0x100000
#define NFS_MOUNT_LOCAL_FCNTL		0x200000
#define NFS_MOUNT_SOFTERR		0x400000
#define NFS_MOUNT_SOFTREVAL		0x800000
#define NFS_MOUNT_WRITE_EAGER		0x01000000
#define NFS_MOUNT_WRITE_WAIT		0x02000000
#define NFS_MOUNT_TRUNK_DISCOVERY	0x04000000
#define NFS_MOUNT_SHUTDOWN			0x08000000

	unsigned int		fattr_valid;	/* Valid attributes */
	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 */
#ifdef CONFIG_NFS_V4_2
	unsigned int		gxasize;	/* getxattr size */
	unsigned int		sxasize;	/* setxattr size */
	unsigned int		lxasize;	/* listxattr size */
#endif
	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 */
	unsigned int		clone_blksize;	/* granularity of a CLONE operation */
#define NFS_OPTION_FSCACHE	0x00000001	/* - local caching enabled */
#define NFS_OPTION_MIGRATION	0x00000002	/* - NFSv4 migration enabled */

	enum nfs4_change_attr_type
				change_attr_type;/* Description of change attribute */

	struct nfs_fsid		fsid;
	int			s_sysfs_id;	/* sysfs dentry index */
	__u64			maxfilesize;	/* maximum file size */
	struct timespec64	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 fscache_volume	*fscache;	/* superblock cookie */
	char			*fscache_uniq;	/* Uniquifier (or NULL) */
#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			exclcreat_bitmask[3];
						/* V4 bitmask representing the
						   set of attributes supported
						   on this filesystem for the
						   exclusive create. */
	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;
	struct list_head	ss_copies;

	unsigned long		mig_gen;
	unsigned long		mig_status;
#define NFS_MIG_IN_TRANSITION		(1)
#define NFS_MIG_FAILED			(2)
#define NFS_MIG_TSM_POSSIBLE		(3)

	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;
	struct rpc_wait_queue	uoc_rpcwaitq;

	/* XDR related information */
	unsigned int		read_hdrsize;

	/* User namespace info */
	const struct cred	*cred;
	bool			has_sec_mnt_opts;
	struct kobject		kobj;
};

/* 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_LGOPEN		(1U << 5)
#define NFS_CAP_CASE_INSENSITIVE	(1U << 6)
#define NFS_CAP_CASE_PRESERVING	(1U << 7)
#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)
#define NFS_CAP_LAYOUTSTATS	(1U << 22)
#define NFS_CAP_CLONE		(1U << 23)
#define NFS_CAP_COPY		(1U << 24)
#define NFS_CAP_OFFLOAD_CANCEL	(1U << 25)
#define NFS_CAP_LAYOUTERROR	(1U << 26)
#define NFS_CAP_COPY_NOTIFY	(1U << 27)
#define NFS_CAP_XATTR		(1U << 28)
#define NFS_CAP_READ_PLUS	(1U << 29)
#define NFS_CAP_FS_LOCATIONS	(1U << 30)
#define NFS_CAP_MOVEABLE	(1U << 31)
#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef _NFS_FS_SB
	3	#define _NFS_FS_SB
	4
	5	#include <linux/list.h>
	6	#include <linux/backing-dev.h>
9157c31d	7	#include <linux/idr.h>
ef818a28	8	#include <linux/wait.h>
557134a3 AA	9	#include <linux/nfs_xdr.h>
557134a3 AA	10	#include <linux/sunrpc/xprt.h>
ef818a28	11
60063497	12	#include <linux/atomic.h>
212bf41d	13	#include <linux/refcount.h>
1da177e4	14
557134a3	15	struct nfs4_session;
d9ef5a8c	16	struct nfs_iostats;
9289e7f9	17	struct nlm_host;
cccef3b9 AA	18	struct nfs4_sequence_args;
	19	struct nfs4_sequence_res;
	20	struct nfs_server;
97dc1359	21	struct nfs4_minor_version_ops;
79d4e1f0	22	struct nfs41_server_scope;
7d2ed9ac	23	struct nfs41_impl_id;
d9ef5a8c	24
24c8dbbb DH	25	/*
	26	* The nfs_client identifies our client state to the server.
	27	*/
	28	struct nfs_client {
212bf41d	29	refcount_t cl_count;
2a4c8994	30	atomic_t cl_mds_count;
24c8dbbb DH	31	int cl_cons_state; /* current construction state (-ve: init error) */
	32	#define NFS_CS_READY 0 /* ready to be used */
	33	#define NFS_CS_INITING 1 /* busy initialising */
76db6d95	34	#define NFS_CS_SESSION_INITING 2 /* busy initialising session */
24c8dbbb	35	unsigned long cl_res_state; /* NFS resources state */
24c8dbbb DH	36	#define NFS_CS_CALLBACK 1 /* - callback started */
24c8dbbb DH	37	#define NFS_CS_IDMAP 2 /* - idmap started */
5dd3177a	38	#define NFS_CS_RENEWD 3 /* - renewd started */
d3b4c9d7	39	#define NFS_CS_STOP_RENEW 4 /* no more state to renew */
d6fb79d4	40	#define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */
4bf590e0 CL	41	unsigned long cl_flags; /* behavior switches */
	42	#define NFS_CS_NORESVPORT 0 /* - use ephemeral src port */
	43	#define NFS_CS_DISCRTRY 1 /* - disconnect on RPC retry */
89652617	44	#define NFS_CS_MIGRATION 2 /* - transparent state migr */
98f98cf5	45	#define NFS_CS_INFINITE_SLOTS 3 /* - don't limit TCP slots */
99875249	46	#define NFS_CS_NO_RETRANS_TIMEOUT 4 /* - Disable retransmit timeouts */
8dcbec6d	47	#define NFS_CS_TSM_POSSIBLE 5 /* - Maybe state migration */
4b1b69ce	48	#define NFS_CS_NOPING 6 /* - don't ping on connect */
52f98f1a	49	#define NFS_CS_DS 7 /* - Server is a DS */
e6237b6f	50	#define NFS_CS_REUSEPORT 8 /* - reuse src port on reconnect */
6e4cffd7 CL	51	struct sockaddr_storage cl_addr; /* server identifier */
6e4cffd7 CL	52	size_t cl_addrlen;
24c8dbbb	53	char * cl_hostname; /* hostname of server */
f11b2a1c	54	char * cl_acceptor; /* GSSAPI acceptor name */
24c8dbbb DH	55	struct list_head cl_share_link; /* link in global client list */
	56	struct list_head cl_superblocks; /* List of nfs_server structs */
	57
	58	struct rpc_clnt * cl_rpcclient;
8fa5c000	59	const struct nfs_rpc_ops rpc_ops; / NFS protocol vector */
59dca3b2	60	int cl_proto; /* Network transport protocol */
ab7017a3	61	struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */
24c8dbbb	62
94a417f3	63	u32 cl_minorversion;/* NFSv4 minorversion */
6619079d	64	unsigned int cl_nconnect; /* Number of connections */
7e134205	65	unsigned int cl_max_connect; /* max number of xprts allowed */
6c0a8c5f CL	66	const char * cl_principal; /* used for machine cred */
6c0a8c5f CL	67	struct xprtsec_parms cl_xprtsec; /* xprt security policy */
7c67db3a	68
89d77c8f	69	#if IS_ENABLED(CONFIG_NFS_V4)
0e20162e	70	struct list_head cl_ds_clients; /* auth flavor data servers */
24c8dbbb	71	u64 cl_clientid; /* constant */
fd954ae1	72	nfs4_verifier cl_confirm; /* Clientid verifier */
24c8dbbb DH	73	unsigned long cl_state;
24c8dbbb DH	74
24c8dbbb DH	75	spinlock_t cl_lock;
	76
	77	unsigned long cl_lease_time;
	78	unsigned long cl_last_renewal;
52bad64d	79	struct delayed_work cl_renewd;
24c8dbbb DH	80
	81	struct rpc_wait_queue cl_rpcwaitq;
	82
24c8dbbb DH	83	/* idmapper */
	84	struct idmap * cl_idmap;
	85
ceb3a16c TM	86	/* Client owner identifier */
	87	const char * cl_owner_id;
	88
f4eecd5d	89	u32 cl_cb_ident; /* v4.0 callback identifier */
97dc1359	90	const struct nfs4_minor_version_ops *cl_mvops;
c9fdeb28	91	unsigned long cl_mig_gen;
14727281	92
abf79bb3 CL	93	/* NFSv4.0 transport blocking */
	94	struct nfs4_slot_table *cl_slot_tbl;
	95
99fe60d0 BH	96	/* The sequence id to use for the next CREATE_SESSION */
	97	u32 cl_seqid;
	98	/* The flags used for obtaining the clientid during EXCHANGE_ID */
	99	u32 cl_exchange_flags;
722baafc	100	struct nfs4_session cl_session; / shared session */
05f4c350	101	bool cl_preserve_clid;
acdeb69d	102	struct nfs41_server_owner *cl_serverowner;
79d4e1f0	103	struct nfs41_server_scope *cl_serverscope;
59155546	104	struct nfs41_impl_id *cl_implid;
2031cd1a WAA	105	/* nfs 4.1+ state protection modes: */
	106	unsigned long cl_sp4_flags;
	107	#define NFS_SP4_MACH_CRED_MINIMAL 1 /* Minimal sp4_mach_cred - state ops
	108	* must use machine cred */
fa940720	109	#define NFS_SP4_MACH_CRED_CLEANUP 2 /* CLOSE and LOCKU */
8b5bee2e	110	#define NFS_SP4_MACH_CRED_SECINFO 3 /* SECINFO and SECINFO_NO_NAME */
3787d506	111	#define NFS_SP4_MACH_CRED_STATEID 4 /* TEST_STATEID and FREE_STATEID */
8c21c62c WAA	112	#define NFS_SP4_MACH_CRED_WRITE 5 /* WRITE */
8c21c62c WAA	113	#define NFS_SP4_MACH_CRED_COMMIT 6 /* COMMIT */
99ade3c7	114	#define NFS_SP4_MACH_CRED_PNFS_CLEANUP 7 /* LAYOUTRETURN */
a1d617d8 JL	115	#if IS_ENABLED(CONFIG_NFS_V4_1)
	116	wait_queue_head_t cl_lock_waitq;
	117	#endif /* CONFIG_NFS_V4_1 */
0400a6b0	118	#endif /* CONFIG_NFS_V4 */
557134a3	119
1a04c6e1 PT	120	/* Our own IP address, as a null-terminated string.
	121	* This is used to generate the mv0 callback address.
	122	*/
	123	char cl_ipaddr[48];
73ea666c	124	struct net *cl_net;
bc0c9079	125	struct list_head pending_cb_stateids;
24c8dbbb DH	126	};
24c8dbbb DH	127
1da177e4 LT	128	/*
	129	* NFS client parameters stored in the superblock.
	130	*/
	131	struct nfs_server {
27951bd2	132	struct nfs_client * nfs_client; /* shared client and NFS4 state */
54ceac45 DH	133	struct list_head client_link; /* List of other nfs_server structs
	134	* that share the same client
	135	*/
	136	struct list_head master_link; /* link in master servers list */
1da177e4	137	struct rpc_clnt * client; /* RPC client handle */
b7fa0554	138	struct rpc_clnt * client_acl; /* ACL RPC client handle */
9289e7f9	139	struct nlm_host nlm_host; / NLM client handle */
003cb608	140	struct nfs_iostats __percpu io_stats; / I/O statistics */
277866a0	141	atomic_long_t writeback; /* number of writeback pages */
6df25e58	142	unsigned int write_congested;/* flag set when writeback gets too high */
75cfb200	143	unsigned int flags; /* various flags */
7b1355b6 TM	144
	145	/* The following are for internal use only. Also see uapi/linux/nfs_mount.h */
	146	#define NFS_MOUNT_LOOKUP_CACHE_NONEG 0x10000
	147	#define NFS_MOUNT_LOOKUP_CACHE_NONE 0x20000
	148	#define NFS_MOUNT_NORESVPORT 0x40000
	149	#define NFS_MOUNT_LEGACY_INTERFACE 0x80000
	150	#define NFS_MOUNT_LOCAL_FLOCK 0x100000
	151	#define NFS_MOUNT_LOCAL_FCNTL 0x200000
91a575e1	152	#define NFS_MOUNT_SOFTERR 0x400000
c74dfe97	153	#define NFS_MOUNT_SOFTREVAL 0x800000
ed7bcdb3 TM	154	#define NFS_MOUNT_WRITE_EAGER 0x01000000
ed7bcdb3 TM	155	#define NFS_MOUNT_WRITE_WAIT 0x02000000
a43bf604	156	#define NFS_MOUNT_TRUNK_DISCOVERY 0x04000000
d9615d16	157	#define NFS_MOUNT_SHUTDOWN 0x08000000
7b1355b6	158
d99f2487	159	unsigned int fattr_valid; /* Valid attributes */
1da177e4 LT	160	unsigned int caps; /* server capabilities */
	161	unsigned int rsize; /* read size */
	162	unsigned int rpages; /* read size (in pages) */
	163	unsigned int wsize; /* write size */
	164	unsigned int wpages; /* write size (in pages) */
	165	unsigned int wtmult; /* server disk block size */
	166	unsigned int dtsize; /* readdir size */
f22d6d79	167	unsigned short port; /* "port=" setting */
1da177e4	168	unsigned int bsize; /* server block size */
04a5da69 FL	169	#ifdef CONFIG_NFS_V4_2
	170	unsigned int gxasize; /* getxattr size */
	171	unsigned int sxasize; /* setxattr size */
	172	unsigned int lxasize; /* listxattr size */
	173	#endif
1da177e4 LT	174	unsigned int acregmin; /* attr cache timeouts */
	175	unsigned int acregmax;
	176	unsigned int acdirmin;
	177	unsigned int acdirmax;
	178	unsigned int namelen;
c6a6f19e	179	unsigned int options; /* extra options enabled by mount */
2a92ee92	180	unsigned int clone_blksize; /* granularity of a CLONE operation */
c6a6f19e	181	#define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */
89652617	182	#define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */
54ceac45	183
7f08a335 TM	184	enum nfs4_change_attr_type
	185	change_attr_type;/* Description of change attribute */
	186
8b4bdcf8	187	struct nfs_fsid fsid;
1c725118	188	int s_sysfs_id; /* sysfs dentry index */
54ceac45	189	__u64 maxfilesize; /* maximum file size */
e86d5a02	190	struct timespec64 time_delta; /* smallest time granularity */
67ec9f46	191	unsigned long mount_time; /* when this fs was mounted */
ce6cda18	192	struct super_block super; / VFS super block */
54ceac45	193	dev_t s_dev; /* superblock dev numbers */
0f5f49b8	194	struct nfs_auth_info auth_info; /* parsed auth flavors */
54ceac45	195
08734048	196	#ifdef CONFIG_NFS_FSCACHE
a6b5a28e DW	197	struct fscache_volume fscache; / superblock cookie */
a6b5a28e DW	198	char fscache_uniq; / Uniquifier (or NULL) */
08734048 DH	199	#endif
08734048 DH	200
a00ed25c	201	u32 pnfs_blksize; /* layout_blksize attr */
89d77c8f	202	#if IS_ENABLED(CONFIG_NFS_V4)
dae100c2	203	u32 attr_bitmask[3];/* V4 bitmask representing the set
1da177e4 LT	204	of attributes supported on this
1da177e4 LT	205	filesystem */
aa9c2669 DQ	206	u32 attr_bitmask_nl[3];
	207	/* V4 bitmask representing the
	208	set of attributes supported
	209	on this filesystem excluding
	210	the label support bit. */
8c61282f KM	211	u32 exclcreat_bitmask[3];
	212	/* V4 bitmask representing the
	213	set of attributes supported
	214	on this filesystem for the
	215	exclusive create. */
a09df2ca	216	u32 cache_consistency_bitmask[3];
a65318bf TM	217	/* V4 bitmask representing the subset
	218	of change attribute, size, ctime
	219	and mtime attributes supported by
	220	the server */
1da177e4 LT	221	u32 acl_bitmask; /* V4 bitmask representing the ACEs
	222	that are supported on this
	223	filesystem */
264e6351 CL	224	u32 fh_expire_type; /* V4 bitmask representing file
	225	handle volatility type for
	226	this filesystem */
85e174ba	227	struct pnfs_layoutdriver_type pnfs_curr_ld; / Active layout driver */
f7e8917a	228	struct rpc_wait_queue roc_rpcwaitq;
2f9fd182	229	void pnfs_ld_data; / per mount point data */
24d292b8 CL	230
	231	/* the following fields are protected by nfs_client->cl_lock */
	232	struct rb_root state_owners;
1da177e4	233	#endif
9157c31d	234	struct ida openowner_id;
d2d7ce28	235	struct ida lockowner_id;
0aaaf5c4	236	struct list_head state_owners_lru;
6382a441	237	struct list_head layouts;
d3978bb3	238	struct list_head delegations;
62164f31	239	struct list_head ss_copies;
c9fdeb28 CL	240
	241	unsigned long mig_gen;
	242	unsigned long mig_status;
	243	#define NFS_MIG_IN_TRANSITION (1)
	244	#define NFS_MIG_FAILED (2)
8dcbec6d	245	#define NFS_MIG_TSM_POSSIBLE (3)
c9fdeb28	246
54ceac45	247	void (destroy)(struct nfs_server );
ef818a28 SD	248
ef818a28 SD	249	atomic_t active; /* Keep trace of any activity to this server */
3f8400d1 CL	250
	251	/* mountd-related mount options */
	252	struct sockaddr_storage mountd_address;
	253	size_t mountd_addrlen;
	254	u32 mountd_version;
	255	unsigned short mountd_port;
	256	unsigned short mountd_protocol;
7d6ddf88	257	struct rpc_wait_queue uoc_rpcwaitq;
8d8928d8 TM	258
	259	/* XDR related information */
	260	unsigned int read_hdrsize;
1a58e8a0 TM	261
	262	/* User namespace info */
	263	const struct cred *cred;
ec1ade6a	264	bool has_sec_mnt_opts;
1c725118	265	struct kobject kobj;
1da177e4 LT	266	};
	267
	268	/* Server capabilities */
	269	#define NFS_CAP_READDIRPLUS (1U << 0)
	270	#define NFS_CAP_HARDLINKS (1U << 1)
	271	#define NFS_CAP_SYMLINKS (1U << 2)
	272	#define NFS_CAP_ACLS (1U << 3)
	273	#define NFS_CAP_ATOMIC_OPEN (1U << 4)
6e01260c	274	#define NFS_CAP_LGOPEN (1U << 5)
1ab5be4a TM	275	#define NFS_CAP_CASE_INSENSITIVE (1U << 6)
1ab5be4a TM	276	#define NFS_CAP_CASE_PRESERVING (1U << 7)
0df5dd4a	277	#define NFS_CAP_POSIX_LOCK (1U << 14)
b064eca2	278	#define NFS_CAP_UIDGID_NOMAP (1U << 15)
3b66486c	279	#define NFS_CAP_STATEID_NFSV41 (1U << 16)
49f9a0fa	280	#define NFS_CAP_ATOMIC_OPEN_V1 (1U << 17)
e64a4210	281	#define NFS_CAP_SECURITY_LABEL (1U << 18)
1c6dcbe5	282	#define NFS_CAP_SEEK (1U << 19)
f4ac1674	283	#define NFS_CAP_ALLOCATE (1U << 20)
624bd5b7	284	#define NFS_CAP_DEALLOCATE (1U << 21)
6c5a0d89	285	#define NFS_CAP_LAYOUTSTATS (1U << 22)
e5341f3a	286	#define NFS_CAP_CLONE (1U << 23)
2e72448b	287	#define NFS_CAP_COPY (1U << 24)
cb95deea	288	#define NFS_CAP_OFFLOAD_CANCEL (1U << 25)
3eb86093	289	#define NFS_CAP_LAYOUTERROR (1U << 26)
0491567b	290	#define NFS_CAP_COPY_NOTIFY (1U << 27)
b78ef845	291	#define NFS_CAP_XATTR (1U << 28)
c5675526	292	#define NFS_CAP_READ_PLUS (1U << 29)
8a59bb93	293	#define NFS_CAP_FS_LOCATIONS (1U << 30)
118f09ed	294	#define NFS_CAP_MOVEABLE (1U << 31)
1da177e4	295	#endif