223 строки
6.7 KiB
C
223 строки
6.7 KiB
C
#ifndef _NFS_FS_SB
|
|
#define _NFS_FS_SB
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/backing-dev.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/nfs_xdr.h>
|
|
#include <linux/sunrpc/xprt.h>
|
|
|
|
#include <asm/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;
|
|
|
|
/*
|
|
* The nfs_client identifies our client state to the server.
|
|
*/
|
|
struct nfs_client {
|
|
atomic_t cl_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 */
|
|
struct sockaddr_storage cl_addr; /* server identifier */
|
|
size_t cl_addrlen;
|
|
char * cl_hostname; /* hostname of server */
|
|
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 */
|
|
|
|
u32 cl_minorversion;/* NFSv4 minorversion */
|
|
struct rpc_cred *cl_machine_cred;
|
|
|
|
#ifdef CONFIG_NFS_V4
|
|
u64 cl_clientid; /* constant */
|
|
unsigned long cl_state;
|
|
|
|
struct rb_root cl_openowner_id;
|
|
struct rb_root cl_lockowner_id;
|
|
|
|
struct list_head cl_delegations;
|
|
struct rb_root cl_state_owners;
|
|
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;
|
|
|
|
/* used for the setclientid verifier */
|
|
struct timespec cl_boot_time;
|
|
|
|
/* idmapper */
|
|
struct idmap * cl_idmap;
|
|
|
|
/* Our own IP address, as a null-terminated string.
|
|
* This is used to generate the clientid, and the callback address.
|
|
*/
|
|
char cl_ipaddr[48];
|
|
unsigned char cl_id_uniquifier;
|
|
const struct nfs4_minor_version_ops *cl_mvops;
|
|
#endif /* CONFIG_NFS_V4 */
|
|
|
|
#ifdef CONFIG_NFS_V4_1
|
|
/* clientid returned from EXCHANGE_ID, used by session operations */
|
|
u64 cl_ex_clid;
|
|
/* 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; /* sharred session */
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
|
|
#ifdef CONFIG_NFS_FSCACHE
|
|
struct fscache_cookie *fscache; /* client index cache cookie */
|
|
#endif
|
|
};
|
|
|
|
/*
|
|
* 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 */
|
|
|
|
struct nfs_fsid fsid;
|
|
__u64 maxfilesize; /* maximum file size */
|
|
unsigned long mount_time; /* when this fs was mounted */
|
|
dev_t s_dev; /* superblock dev numbers */
|
|
|
|
#ifdef CONFIG_NFS_FSCACHE
|
|
struct nfs_fscache_key *fscache_key; /* unique key for superblock */
|
|
struct fscache_cookie *fscache; /* superblock cookie */
|
|
#endif
|
|
|
|
#ifdef CONFIG_NFS_V4
|
|
u32 attr_bitmask[2];/* V4 bitmask representing the set
|
|
of attributes supported on this
|
|
filesystem */
|
|
u32 cache_consistency_bitmask[2];
|
|
/* 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 */
|
|
#endif
|
|
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)
|
|
|
|
|
|
/* maximum number of slots to use */
|
|
#define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE
|
|
|
|
#if defined(CONFIG_NFS_V4_1)
|
|
|
|
/* Sessions */
|
|
#define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long)))
|
|
struct nfs4_slot_table {
|
|
struct nfs4_slot *slots; /* seqid per slot */
|
|
unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */
|
|
spinlock_t slot_tbl_lock;
|
|
struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */
|
|
int max_slots; /* # slots in table */
|
|
int highest_used_slotid; /* sent to server on each SEQ.
|
|
* op for dynamic resizing */
|
|
int target_max_slots; /* Set by CB_RECALL_SLOT as
|
|
* the new max_slots */
|
|
};
|
|
|
|
static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp)
|
|
{
|
|
return sp - tbl->slots;
|
|
}
|
|
|
|
/*
|
|
* Session related parameters
|
|
*/
|
|
struct nfs4_session {
|
|
struct nfs4_sessionid sess_id;
|
|
u32 flags;
|
|
unsigned long session_state;
|
|
u32 hash_alg;
|
|
u32 ssv_len;
|
|
struct completion complete;
|
|
|
|
/* The fore and back channel */
|
|
struct nfs4_channel_attrs fc_attrs;
|
|
struct nfs4_slot_table fc_slot_table;
|
|
struct nfs4_channel_attrs bc_attrs;
|
|
struct nfs4_slot_table bc_slot_table;
|
|
struct nfs_client *clp;
|
|
};
|
|
|
|
#endif /* CONFIG_NFS_V4_1 */
|
|
#endif
|