#ifndef _LINUX_NFS_FS_H
#define _LINUX_NFS_FS_H
-#include <linux/config.h>
+#include <linux/magic.h>
+
+/*
+ * Enable debugging support for nfs client.
+ * Requires RPC_DEBUG.
+ */
+#ifdef RPC_DEBUG
+# define NFS_DEBUG
+#endif
+
+/* Default timeout values */
+#define NFS_MAX_UDP_TIMEOUT (60*HZ)
+#define NFS_MAX_TCP_TIMEOUT (600*HZ)
+
+/*
+ * When flushing a cluster of dirty pages, there can be different
+ * strategies:
+ */
+#define FLUSH_SYNC 1 /* file being synced, or contention */
+#define FLUSH_STABLE 4 /* commit to stable storage */
+#define FLUSH_LOWPRI 8 /* low priority background flush */
+#define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */
+#define FLUSH_NOCOMMIT 32 /* Don't send the NFSv3/v4 COMMIT */
+#define FLUSH_INVALIDATE 64 /* Invalidate the page cache */
+#define FLUSH_NOWRITEPAGE 128 /* Don't call writepage() */
+
+#ifdef __KERNEL__
+
#include <linux/in.h>
#include <linux/mm.h>
#include <linux/pagemap.h>
+#include <linux/rbtree.h>
#include <linux/rwsem.h>
#include <linux/wait.h>
-#include <linux/uio.h>
-
-#include <linux/nfs_fs_sb.h>
#include <linux/sunrpc/debug.h>
#include <linux/sunrpc/auth.h>
#include <linux/nfs3.h>
#include <linux/nfs4.h>
#include <linux/nfs_xdr.h>
-#include <linux/workqueue.h>
-/*
- * Enable debugging support for nfs client.
- * Requires RPC_DEBUG.
- */
-#ifdef RPC_DEBUG
-# define NFS_DEBUG
-#endif
-
-#define NFS_MAX_FILE_IO_BUFFER_SIZE 32768
-#define NFS_DEF_FILE_IO_BUFFER_SIZE 4096
-
-/*
- * The upper limit on timeouts for the exponential backoff algorithm.
- */
-#define NFS_WRITEBACK_DELAY (5*HZ)
-#define NFS_WRITEBACK_LOCKDELAY (60*HZ)
-#define NFS_COMMIT_DELAY (5*HZ)
+#include <linux/nfs_fs_sb.h>
-/*
- * superblock magic number for NFS
- */
-#define NFS_SUPER_MAGIC 0x6969
+#include <linux/rwsem.h>
+#include <linux/mempool.h>
/*
* These are the default flags for swap requests
*/
#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS)
-#define NFS_RW_SYNC 0x0001 /* O_SYNC handling */
-#define NFS_RW_SWAP 0x0002 /* This is a swap request */
-
-/*
- * When flushing a cluster of dirty pages, there can be different
- * strategies:
- */
-#define FLUSH_AGING 0 /* only flush old buffers */
-#define FLUSH_SYNC 1 /* file being synced, or contention */
-#define FLUSH_WAIT 2 /* wait for completion */
-#define FLUSH_STABLE 4 /* commit to stable storage */
-#define FLUSH_LOWPRI 8 /* low priority background flush */
-#define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */
-
-#ifdef __KERNEL__
-
/*
- * NFSv3 Access mode cache
+ * NFSv3/v4 Access mode cache entry
*/
-struct nfs_access_cache {
+struct nfs_access_entry {
+ struct rb_node rb_node;
+ struct list_head lru;
unsigned long jiffies;
struct rpc_cred * cred;
int mask;
- int err;
+};
+
+struct nfs4_state;
+struct nfs_open_context {
+ atomic_t count;
+ struct vfsmount *vfsmnt;
+ struct dentry *dentry;
+ struct rpc_cred *cred;
+ struct nfs4_state *state;
+ fl_owner_t lockowner;
+ int mode;
+ int error;
+
+ struct list_head list;
+
+ __u64 dir_cookie;
};
+/*
+ * NFSv4 delegation
+ */
+struct nfs_delegation;
+
+struct posix_acl;
+
/*
* nfs fs inode data in memory
*/
/*
* Various flags
*/
- unsigned int flags;
+ unsigned long flags; /* atomic bit ops */
+ unsigned long cache_validity; /* bit mask */
/*
- * read_cache_jiffies is when we started read-caching this inode,
- * and read_cache_mtime is the mtime of the inode at that time.
+ * read_cache_jiffies is when we started read-caching this inode.
* attrtimeo is for how long the cached information is assumed
* to be valid. A successful attribute revalidation doubles
* attrtimeo (up to acregmax/acdirmax), a failure resets it to
* We need to revalidate the cached attrs for this inode if
*
* jiffies - read_cache_jiffies > attrtimeo
- *
- * and invalidate any cached data/flush out any dirty pages if
- * we find that
- *
- * mtime != read_cache_mtime
*/
- unsigned long readdir_timestamp;
unsigned long read_cache_jiffies;
unsigned long attrtimeo;
unsigned long attrtimeo_timestamp;
__u64 change_attr; /* v4 only */
+ unsigned long last_updated;
/* "Generation counter" for the attribute cache. This is
* bumped whenever we update the metadata on the
* server.
*/
atomic_t data_updates;
- struct nfs_access_cache cache_access;
+ struct rb_root access_cache;
+ struct list_head access_cache_entry_lru;
+ struct list_head access_cache_inode_lru;
+#ifdef CONFIG_NFS_V3_ACL
+ struct posix_acl *acl_access;
+ struct posix_acl *acl_default;
+#endif
/*
* This is the cookie verifier used for NFSv3 readdir
* operations
*/
- __u32 cookieverf[2];
+ __be32 cookieverf[2];
/*
* This is the list of dirty unwritten pages.
*/
+ spinlock_t req_lock;
struct list_head dirty;
struct list_head commit;
struct radix_tree_root nfs_page_tree;
ncommit,
npages;
- /* Credentials for shared mmap */
- struct rpc_cred *mm_cred;
-
- wait_queue_head_t nfs_i_wait;
+ /* Open contexts for shared mmap writes */
+ struct list_head open_files;
#ifdef CONFIG_NFS_V4
+ struct nfs4_cached_acl *nfs4_acl;
/* NFSv4 state */
struct list_head open_states;
+ struct nfs_delegation *delegation;
+ int delegation_state;
+ struct rw_semaphore rwsem;
#endif /* CONFIG_NFS_V4*/
-
struct inode vfs_inode;
};
/*
- * Legal inode flag values
+ * Cache validity bit flags
*/
-#define NFS_INO_STALE 0x0001 /* possible stale inode */
-#define NFS_INO_ADVISE_RDPLUS 0x0002 /* advise readdirplus */
-#define NFS_INO_REVALIDATING 0x0004 /* revalidating attrs */
-#define NFS_INO_INVALID_ATTR 0x0008 /* cached attrs are invalid */
-#define NFS_INO_INVALID_DATA 0x0010 /* cached data is invalid */
-#define NFS_INO_INVALID_ATIME 0x0020 /* cached atime is invalid */
+#define NFS_INO_INVALID_ATTR 0x0001 /* cached attrs are invalid */
+#define NFS_INO_INVALID_DATA 0x0002 /* cached data is invalid */
+#define NFS_INO_INVALID_ATIME 0x0004 /* cached atime is invalid */
+#define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */
+#define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */
+#define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */
+
+/*
+ * Bit offsets in flags field
+ */
+#define NFS_INO_REVALIDATING (0) /* revalidating attrs */
+#define NFS_INO_ADVISE_RDPLUS (1) /* advise readdirplus */
+#define NFS_INO_STALE (2) /* possible stale inode */
+#define NFS_INO_ACL_LRU_SET (3) /* Inode is on the LRU list */
static inline struct nfs_inode *NFS_I(struct inode *inode)
{
#define NFS_FH(inode) (&NFS_I(inode)->fh)
#define NFS_SERVER(inode) (NFS_SB(inode->i_sb))
#define NFS_CLIENT(inode) (NFS_SERVER(inode)->client)
-#define NFS_PROTO(inode) (NFS_SERVER(inode)->rpc_ops)
-#define NFS_ADDR(inode) (RPC_PEERADDR(NFS_CLIENT(inode)))
+#define NFS_PROTO(inode) (NFS_SERVER(inode)->nfs_client->rpc_ops)
#define NFS_COOKIEVERF(inode) (NFS_I(inode)->cookieverf)
#define NFS_READTIME(inode) (NFS_I(inode)->read_cache_jiffies)
#define NFS_CHANGE_ATTR(inode) (NFS_I(inode)->change_attr)
#define NFS_ATTRTIMEO_UPDATE(inode) (NFS_I(inode)->attrtimeo_timestamp)
#define NFS_FLAGS(inode) (NFS_I(inode)->flags)
-#define NFS_REVALIDATING(inode) (NFS_FLAGS(inode) & NFS_INO_REVALIDATING)
-#define NFS_STALE(inode) (NFS_FLAGS(inode) & NFS_INO_STALE)
+#define NFS_STALE(inode) (test_bit(NFS_INO_STALE, &NFS_FLAGS(inode)))
#define NFS_FILEID(inode) (NFS_I(inode)->fileid)
return atomic_read(&NFS_I(inode)->data_updates) != 0;
}
+static inline void nfs_mark_for_revalidate(struct inode *inode)
+{
+ struct nfs_inode *nfsi = NFS_I(inode);
+
+ spin_lock(&inode->i_lock);
+ nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS;
+ if (S_ISDIR(inode->i_mode))
+ nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA;
+ spin_unlock(&inode->i_lock);
+}
+
static inline void NFS_CACHEINV(struct inode *inode)
{
if (!nfs_caches_unstable(inode))
- NFS_FLAGS(inode) |= NFS_INO_INVALID_ATTR;
+ nfs_mark_for_revalidate(inode);
}
static inline int nfs_server_capable(struct inode *inode, int cap)
static inline int NFS_USE_READDIRPLUS(struct inode *inode)
{
- return NFS_FLAGS(inode) & NFS_INO_ADVISE_RDPLUS;
-}
-
-static inline
-loff_t page_offset(struct page *page)
-{
- return ((loff_t)page->index) << PAGE_CACHE_SHIFT;
+ return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
}
/**
static inline int nfs_verify_change_attribute(struct inode *inode, unsigned long chattr)
{
return !nfs_caches_unstable(inode)
- && chattr == NFS_I(inode)->cache_change_attribute;
+ && time_after_eq(chattr, NFS_I(inode)->cache_change_attribute);
}
/*
* linux/fs/nfs/inode.c
*/
+extern int nfs_sync_mapping(struct address_space *mapping);
+extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping);
extern void nfs_zap_caches(struct inode *);
extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *,
struct nfs_fattr *);
extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *);
+extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr);
extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
extern int nfs_permission(struct inode *, int, struct nameidata *);
-extern void nfs_set_mmcred(struct inode *, struct rpc_cred *);
+extern int nfs_access_get_cached(struct inode *, struct rpc_cred *, struct nfs_access_entry *);
+extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *);
+extern void nfs_access_zap_cache(struct inode *inode);
extern int nfs_open(struct inode *, struct file *);
extern int nfs_release(struct inode *, struct file *);
+extern int nfs_attribute_timeout(struct inode *inode);
+extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode);
extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *);
+extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping);
+extern int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping);
extern int nfs_setattr(struct dentry *, struct iattr *);
+extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr);
extern void nfs_begin_attr_update(struct inode *);
extern void nfs_end_attr_update(struct inode *);
extern void nfs_begin_data_update(struct inode *);
extern void nfs_end_data_update(struct inode *);
-extern void nfs_end_data_update_defer(struct inode *);
+extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx);
+extern void put_nfs_open_context(struct nfs_open_context *ctx);
+extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode);
/* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */
-extern u32 root_nfs_parse_addr(char *name); /*__init*/
+extern __be32 root_nfs_parse_addr(char *name); /*__init*/
+
+static inline void nfs_fattr_init(struct nfs_fattr *fattr)
+{
+ fattr->valid = 0;
+ fattr->time_start = jiffies;
+}
/*
* linux/fs/nfs/file.c
*/
extern struct inode_operations nfs_file_inode_operations;
-extern struct file_operations nfs_file_operations;
-extern struct address_space_operations nfs_file_aops;
+#ifdef CONFIG_NFS_V3
+extern struct inode_operations nfs3_file_inode_operations;
+#endif /* CONFIG_NFS_V3 */
+extern const struct file_operations nfs_file_operations;
+extern const struct address_space_operations nfs_file_aops;
-static __inline__ struct rpc_cred *
-nfs_file_cred(struct file *file)
+static inline struct rpc_cred *nfs_file_cred(struct file *file)
{
- struct rpc_cred *cred = NULL;
- if (file)
- cred = (struct rpc_cred *)file->private_data;
-#ifdef RPC_DEBUG
- BUG_ON(cred && cred->cr_magic != RPCAUTH_CRED_MAGIC);
-#endif
- return cred;
+ if (file != NULL) {
+ struct nfs_open_context *ctx;
+
+ ctx = (struct nfs_open_context*)file->private_data;
+ return ctx->cred;
+ }
+ return NULL;
}
+/*
+ * linux/fs/nfs/xattr.c
+ */
+#ifdef CONFIG_NFS_V3_ACL
+extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t);
+extern ssize_t nfs3_getxattr(struct dentry *, const char *, void *, size_t);
+extern int nfs3_setxattr(struct dentry *, const char *,
+ const void *, size_t, int);
+extern int nfs3_removexattr (struct dentry *, const char *name);
+#else
+# define nfs3_listxattr NULL
+# define nfs3_getxattr NULL
+# define nfs3_setxattr NULL
+# define nfs3_removexattr NULL
+#endif
+
/*
* linux/fs/nfs/direct.c
*/
extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t,
unsigned long);
-extern ssize_t nfs_file_direct_read(struct kiocb *iocb, char __user *buf,
- size_t count, loff_t pos);
-extern ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf,
- size_t count, loff_t pos);
+extern ssize_t nfs_file_direct_read(struct kiocb *iocb,
+ const struct iovec *iov, unsigned long nr_segs,
+ loff_t pos);
+extern ssize_t nfs_file_direct_write(struct kiocb *iocb,
+ const struct iovec *iov, unsigned long nr_segs,
+ loff_t pos);
/*
* linux/fs/nfs/dir.c
*/
extern struct inode_operations nfs_dir_inode_operations;
-extern struct file_operations nfs_dir_operations;
+#ifdef CONFIG_NFS_V3
+extern struct inode_operations nfs3_dir_inode_operations;
+#endif /* CONFIG_NFS_V3 */
+extern const struct file_operations nfs_dir_operations;
extern struct dentry_operations nfs_dentry_operations;
+extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr);
+
/*
* linux/fs/nfs/symlink.c
*/
extern struct inode_operations nfs_symlink_inode_operations;
/*
- * linux/fs/nfs/locks.c
+ * linux/fs/nfs/sysctl.c
+ */
+#ifdef CONFIG_SYSCTL
+extern int nfs_register_sysctl(void);
+extern void nfs_unregister_sysctl(void);
+#else
+#define nfs_register_sysctl() 0
+#define nfs_unregister_sysctl() do { } while(0)
+#endif
+
+/*
+ * linux/fs/nfs/namespace.c
*/
-extern int nfs_lock(struct file *, int, struct file_lock *);
+extern struct list_head nfs_automount_list;
+extern struct inode_operations nfs_mountpoint_inode_operations;
+extern struct inode_operations nfs_referral_inode_operations;
+extern int nfs_mountpoint_expiry_timeout;
+extern void nfs_release_automount_timer(void);
/*
* linux/fs/nfs/unlink.c
extern int nfs_writepages(struct address_space *, struct writeback_control *);
extern int nfs_flush_incompatible(struct file *file, struct page *page);
extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int);
-extern void nfs_writeback_done(struct rpc_task *task);
-
-#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
-extern void nfs_commit_done(struct rpc_task *);
-#endif
+extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *);
+extern void nfs_writedata_release(void *);
+extern int nfs_set_page_dirty(struct page *);
/*
* Try to write back everything synchronously (but check the
* return value!)
*/
-extern int nfs_sync_inode(struct inode *, unsigned long, unsigned int, int);
-extern int nfs_flush_inode(struct inode *, unsigned long, unsigned int, int);
-extern int nfs_flush_list(struct list_head *, int, int);
+extern long nfs_sync_mapping_wait(struct address_space *, struct writeback_control *, int);
+extern int nfs_sync_mapping_range(struct address_space *, loff_t, loff_t, int);
+extern int nfs_wb_all(struct inode *inode);
+extern int nfs_wb_page(struct inode *inode, struct page* page);
+extern int nfs_wb_page_priority(struct inode *inode, struct page* page, int how);
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
-extern int nfs_commit_inode(struct inode *, unsigned long, unsigned int, int);
-extern int nfs_commit_list(struct list_head *, int);
+extern int nfs_commit_inode(struct inode *, int);
+extern struct nfs_write_data *nfs_commit_alloc(void);
+extern void nfs_commit_free(struct nfs_write_data *wdata);
+extern void nfs_commit_release(void *wdata);
#else
static inline int
-nfs_commit_inode(struct inode *inode, unsigned long idx_start, unsigned int npages, int how)
+nfs_commit_inode(struct inode *inode, int how)
{
return 0;
}
return NFS_I(inode)->npages != 0;
}
-static inline int
-nfs_wb_all(struct inode *inode)
-{
- int error = nfs_sync_inode(inode, 0, 0, FLUSH_WAIT);
- return (error < 0) ? error : 0;
-}
-
/*
- * Write back all requests on one page - we do this before reading it.
+ * Allocate nfs_write_data structures
*/
-static inline int nfs_wb_page_priority(struct inode *inode, struct page* page, int how)
-{
- int error = nfs_sync_inode(inode, page->index, 1,
- how | FLUSH_WAIT | FLUSH_STABLE);
- return (error < 0) ? error : 0;
-}
-
-static inline int nfs_wb_page(struct inode *inode, struct page* page)
-{
- return nfs_wb_page_priority(inode, page, 0);
-}
-
-/* Hack for future NFS swap support */
-#ifndef IS_SWAPFILE
-# define IS_SWAPFILE(inode) (0)
-#endif
+extern struct nfs_write_data *nfs_writedata_alloc(size_t len);
/*
* linux/fs/nfs/read.c
extern int nfs_readpage(struct file *, struct page *);
extern int nfs_readpages(struct file *, struct address_space *,
struct list_head *, unsigned);
-extern int nfs_pagein_list(struct list_head *, int);
-extern void nfs_readpage_result(struct rpc_task *);
+extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *);
+extern void nfs_readdata_release(void *data);
/*
- * linux/fs/mount_clnt.c
- * (Used only by nfsroot module)
+ * Allocate nfs_read_data structures
*/
-extern int nfsroot_mount(struct sockaddr_in *, char *, struct nfs_fh *,
- int, int);
+extern struct nfs_read_data *nfs_readdata_alloc(size_t len);
/*
- * inline functions
+ * linux/fs/nfs3proc.c
*/
-
-static inline int nfs_attribute_timeout(struct inode *inode)
+#ifdef CONFIG_NFS_V3_ACL
+extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type);
+extern int nfs3_proc_setacl(struct inode *inode, int type,
+ struct posix_acl *acl);
+extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode,
+ mode_t mode);
+extern void nfs3_forget_cached_acls(struct inode *inode);
+#else
+static inline int nfs3_proc_set_default_acl(struct inode *dir,
+ struct inode *inode,
+ mode_t mode)
{
- struct nfs_inode *nfsi = NFS_I(inode);
-
- return time_after(jiffies, nfsi->read_cache_jiffies+nfsi->attrtimeo);
+ return 0;
}
-/**
- * nfs_revalidate_inode - Revalidate the inode attributes
- * @server - pointer to nfs_server struct
- * @inode - pointer to inode struct
- *
- * Updates inode attribute information by retrieving the data from the server.
- */
-static inline int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
+static inline void nfs3_forget_cached_acls(struct inode *inode)
{
- if (!(NFS_FLAGS(inode) & (NFS_INO_INVALID_ATTR|NFS_INO_INVALID_DATA))
- && !nfs_attribute_timeout(inode))
- return NFS_STALE(inode) ? -ESTALE : 0;
- return __nfs_revalidate_inode(server, inode);
}
+#endif /* CONFIG_NFS_V3_ACL */
+
+/*
+ * linux/fs/mount_clnt.c
+ * (Used only by nfsroot module)
+ */
+extern int nfsroot_mount(struct sockaddr_in *, char *, struct nfs_fh *,
+ int, int);
+
+/*
+ * inline functions
+ */
static inline loff_t
nfs_size_to_loff_t(__u64 size)
#define NFS_JUKEBOX_RETRY_TIME (5 * HZ)
-#ifdef CONFIG_NFS_V4
-
-struct idmap;
-
-/*
- * In a seqid-mutating op, this macro controls which error return
- * values trigger incrementation of the seqid.
- *
- * from rfc 3010:
- * The client MUST monotonically increment the sequence number for the
- * CLOSE, LOCK, LOCKU, OPEN, OPEN_CONFIRM, and OPEN_DOWNGRADE
- * operations. This is true even in the event that the previous
- * operation that used the sequence number received an error. The only
- * exception to this rule is if the previous operation received one of
- * the following errors: NFSERR_STALE_CLIENTID, NFSERR_STALE_STATEID,
- * NFSERR_BAD_STATEID, NFSERR_BAD_SEQID, NFSERR_BADXDR,
- * NFSERR_RESOURCE, NFSERR_NOFILEHANDLE.
- *
- */
-#define seqid_mutating_err(err) \
-(((err) != NFSERR_STALE_CLIENTID) && \
- ((err) != NFSERR_STALE_STATEID) && \
- ((err) != NFSERR_BAD_STATEID) && \
- ((err) != NFSERR_BAD_SEQID) && \
- ((err) != NFSERR_BAD_XDR) && \
- ((err) != NFSERR_RESOURCE) && \
- ((err) != NFSERR_NOFILEHANDLE))
-
-enum nfs4_client_state {
- NFS4CLNT_OK = 0,
- NFS4CLNT_NEW,
- NFS4CLNT_SETUP_STATE,
-};
-
-/*
- * The nfs4_client identifies our client state to the server.
- */
-struct nfs4_client {
- struct list_head cl_servers; /* Global list of servers */
- struct in_addr cl_addr; /* Server identifier */
- u64 cl_clientid; /* constant */
- nfs4_verifier cl_confirm;
- unsigned long cl_state;
- long cl_generation;
-
- u32 cl_lockowner_id;
-
- /*
- * The following rwsem ensures exclusive access to the server
- * while we recover the state following a lease expiration.
- */
- struct rw_semaphore cl_sem;
-
- struct list_head cl_state_owners;
- struct list_head cl_unused;
- int cl_nunused;
- spinlock_t cl_lock;
- atomic_t cl_count;
-
- struct rpc_clnt * cl_rpcclient;
- struct rpc_cred * cl_cred;
-
- struct list_head cl_superblocks; /* List of nfs_server structs */
-
- unsigned long cl_lease_time;
- unsigned long cl_last_renewal;
- struct work_struct cl_renewd;
- struct work_struct cl_recoverd;
-
- wait_queue_head_t cl_waitq;
- struct rpc_wait_queue cl_rpcwaitq;
-
- /* 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[16];
-};
-
-/*
- * NFS4 state_owners and lock_owners are simply labels for ordered
- * sequences of RPC calls. Their sole purpose is to provide once-only
- * semantics by allowing the server to identify replayed requests.
- *
- * The ->so_sema is held during all state_owner seqid-mutating operations:
- * OPEN, OPEN_DOWNGRADE, and CLOSE. Its purpose is to properly serialize
- * so_seqid.
- */
-struct nfs4_state_owner {
- struct list_head so_list; /* per-clientid list of state_owners */
- struct nfs4_client *so_client;
- u32 so_id; /* 32-bit identifier, unique */
- struct semaphore so_sema;
- u32 so_seqid; /* protected by so_sema */
- unsigned int so_flags; /* protected by so_sema */
- atomic_t so_count;
- long so_generation;
-
- struct rpc_cred *so_cred; /* Associated cred */
- struct list_head so_states;
-};
-
-/*
- * struct nfs4_state maintains the client-side state for a given
- * (state_owner,inode) tuple (OPEN) or state_owner (LOCK).
- *
- * OPEN:
- * In order to know when to OPEN_DOWNGRADE or CLOSE the state on the server,
- * we need to know how many files are open for reading or writing on a
- * given inode. This information too is stored here.
- *
- * LOCK: one nfs4_state (LOCK) to hold the lock stateid nfs4_state(OPEN)
- */
-
-struct nfs4_lock_state {
- struct list_head ls_locks; /* Other lock stateids */
- fl_owner_t ls_owner; /* POSIX lock owner */
- struct nfs4_state * ls_parent; /* Parent nfs4_state */
- u32 ls_seqid;
- u32 ls_id;
- nfs4_stateid ls_stateid;
- atomic_t ls_count;
-};
-
-/* bits for nfs4_state->flags */
-enum {
- LK_STATE_IN_USE,
-};
-
-struct nfs4_state {
- struct list_head open_states; /* List of states for the same state_owner */
- struct list_head inode_states; /* List of states for the same inode */
- struct list_head lock_states; /* List of subservient lock stateids */
-
- struct nfs4_state_owner *owner; /* Pointer to the open owner */
- struct inode *inode; /* Pointer to the inode */
-
- unsigned long flags; /* Do we hold any locks? */
- struct semaphore lock_sema; /* Serializes file locking operations */
- rwlock_t state_lock; /* Protects the lock_states list */
-
- nfs4_stateid stateid;
-
- unsigned int nreaders;
- unsigned int nwriters;
- int state; /* State on the server (R,W, or RW) */
- atomic_t count;
-};
-
-
-extern struct dentry_operations nfs4_dentry_operations;
-extern struct inode_operations nfs4_dir_inode_operations;
-
-/* nfs4proc.c */
-extern int nfs4_proc_setclientid(struct nfs4_client *, u32, unsigned short);
-extern int nfs4_proc_setclientid_confirm(struct nfs4_client *);
-extern int nfs4_open_reclaim(struct nfs4_state_owner *, struct nfs4_state *);
-extern int nfs4_proc_async_renew(struct nfs4_client *);
-extern int nfs4_proc_renew(struct nfs4_client *);
-extern int nfs4_do_close(struct inode *, struct nfs4_state *);
-int nfs4_do_downgrade(struct inode *inode, struct nfs4_state *state, mode_t mode);
-extern int nfs4_wait_clnt_recover(struct rpc_clnt *, struct nfs4_client *);
-extern struct inode *nfs4_atomic_open(struct inode *, struct dentry *, struct nameidata *);
-extern int nfs4_open_revalidate(struct inode *, struct dentry *, int);
-
-/* nfs4renewd.c */
-extern void nfs4_schedule_state_renewal(struct nfs4_client *);
-extern void nfs4_renewd_prepare_shutdown(struct nfs_server *);
-extern void nfs4_kill_renewd(struct nfs4_client *);
-
-/* nfs4state.c */
-extern void init_nfsv4_state(struct nfs_server *);
-extern void destroy_nfsv4_state(struct nfs_server *);
-extern struct nfs4_client *nfs4_get_client(struct in_addr *);
-extern void nfs4_put_client(struct nfs4_client *clp);
-extern u32 nfs4_alloc_lockowner_id(struct nfs4_client *);
-
-extern struct nfs4_state_owner * nfs4_get_state_owner(struct nfs_server *, struct rpc_cred *);
-extern void nfs4_put_state_owner(struct nfs4_state_owner *);
-extern struct nfs4_state * nfs4_get_open_state(struct inode *, struct nfs4_state_owner *);
-extern void nfs4_put_open_state(struct nfs4_state *);
-extern void nfs4_close_state(struct nfs4_state *, mode_t);
-extern struct nfs4_state *nfs4_find_state(struct inode *, struct rpc_cred *, mode_t mode);
-extern void nfs4_increment_seqid(int status, struct nfs4_state_owner *sp);
-extern int nfs4_handle_error(struct nfs_server *, int);
-extern void nfs4_schedule_state_recovery(struct nfs4_client *);
-extern struct nfs4_lock_state *nfs4_find_lock_state(struct nfs4_state *state, fl_owner_t);
-extern struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, fl_owner_t);
-extern void nfs4_put_lock_state(struct nfs4_lock_state *state);
-extern void nfs4_increment_lock_seqid(int status, struct nfs4_lock_state *ls);
-extern void nfs4_notify_setlk(struct inode *, struct file_lock *, struct nfs4_lock_state *);
-extern void nfs4_notify_unlck(struct inode *, struct file_lock *, struct nfs4_lock_state *);
-extern void nfs4_copy_stateid(nfs4_stateid *, struct nfs4_state *, fl_owner_t);
-
-
-
-struct nfs4_mount_data;
-#else
-#define init_nfsv4_state(server) do { } while (0)
-#define destroy_nfsv4_state(server) do { } while (0)
-#define nfs4_put_state_owner(inode, owner) do { } while (0)
-#define nfs4_put_open_state(state) do { } while (0)
-#define nfs4_renewd_prepare_shutdown(server) do { } while (0)
-#endif
-
#endif /* __KERNEL__ */
/*
#define NFSDBG_XDR 0x0020
#define NFSDBG_FILE 0x0040
#define NFSDBG_ROOT 0x0080
+#define NFSDBG_CALLBACK 0x0100
+#define NFSDBG_CLIENT 0x0200
#define NFSDBG_ALL 0xFFFF
#ifdef __KERNEL__
git://git.onelab.eu / linux-2.6.git / blobdiff