632 lines
18 KiB
C
632 lines
18 KiB
C
/*
|
|
* linux/include/linux/nfs_fs.h
|
|
*
|
|
* Copyright (C) 1992 Rick Sladkey
|
|
*
|
|
* OS-specific nfs filesystem definitions and declarations
|
|
*/
|
|
#ifndef _LINUX_NFS_FS_H
|
|
#define _LINUX_NFS_FS_H
|
|
|
|
#include <uapi/linux/nfs_fs.h>
|
|
|
|
|
|
/*
|
|
* Enable dprintk() debugging support for nfs client.
|
|
*/
|
|
#ifdef CONFIG_NFS_DEBUG
|
|
# define NFS_DEBUG
|
|
#endif
|
|
|
|
#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/sunrpc/debug.h>
|
|
#include <linux/sunrpc/auth.h>
|
|
#include <linux/sunrpc/clnt.h>
|
|
|
|
#include <linux/nfs.h>
|
|
#include <linux/nfs2.h>
|
|
#include <linux/nfs3.h>
|
|
#include <linux/nfs4.h>
|
|
#include <linux/nfs_xdr.h>
|
|
#include <linux/nfs_fs_sb.h>
|
|
|
|
#include <linux/mempool.h>
|
|
|
|
/*
|
|
* These are the default flags for swap requests
|
|
*/
|
|
#define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS)
|
|
|
|
/*
|
|
* NFSv3/v4 Access mode cache entry
|
|
*/
|
|
struct nfs_access_entry {
|
|
struct rb_node rb_node;
|
|
struct list_head lru;
|
|
unsigned long jiffies;
|
|
struct rpc_cred * cred;
|
|
int mask;
|
|
};
|
|
|
|
struct nfs_lockowner {
|
|
fl_owner_t l_owner;
|
|
pid_t l_pid;
|
|
};
|
|
|
|
#define NFS_IO_INPROGRESS 0
|
|
struct nfs_io_counter {
|
|
unsigned long flags;
|
|
atomic_t io_count;
|
|
};
|
|
|
|
struct nfs_lock_context {
|
|
atomic_t count;
|
|
struct list_head list;
|
|
struct nfs_open_context *open_context;
|
|
struct nfs_lockowner lockowner;
|
|
struct nfs_io_counter io_count;
|
|
};
|
|
|
|
struct nfs4_state;
|
|
struct nfs_open_context {
|
|
struct nfs_lock_context lock_context;
|
|
struct dentry *dentry;
|
|
struct rpc_cred *cred;
|
|
struct nfs4_state *state;
|
|
fmode_t mode;
|
|
|
|
unsigned long flags;
|
|
#define NFS_CONTEXT_ERROR_WRITE (0)
|
|
#define NFS_CONTEXT_RESEND_WRITES (1)
|
|
#define NFS_CONTEXT_BAD (2)
|
|
int error;
|
|
|
|
struct list_head list;
|
|
struct nfs4_threshold *mdsthreshold;
|
|
};
|
|
|
|
struct nfs_open_dir_context {
|
|
struct rpc_cred *cred;
|
|
unsigned long attr_gencount;
|
|
__u64 dir_cookie;
|
|
__u64 dup_cookie;
|
|
signed char duped;
|
|
};
|
|
|
|
/*
|
|
* NFSv4 delegation
|
|
*/
|
|
struct nfs_delegation;
|
|
|
|
struct posix_acl;
|
|
|
|
/*
|
|
* nfs fs inode data in memory
|
|
*/
|
|
struct nfs_inode {
|
|
/*
|
|
* The 64bit 'inode number'
|
|
*/
|
|
__u64 fileid;
|
|
|
|
/*
|
|
* NFS file handle
|
|
*/
|
|
struct nfs_fh fh;
|
|
|
|
/*
|
|
* Various flags
|
|
*/
|
|
unsigned long flags; /* atomic bit ops */
|
|
unsigned long cache_validity; /* bit mask */
|
|
|
|
/*
|
|
* 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
|
|
* acregmin/acdirmin.
|
|
*
|
|
* We need to revalidate the cached attrs for this inode if
|
|
*
|
|
* jiffies - read_cache_jiffies >= attrtimeo
|
|
*
|
|
* Please note the comparison is greater than or equal
|
|
* so that zero timeout values can be specified.
|
|
*/
|
|
unsigned long read_cache_jiffies;
|
|
unsigned long attrtimeo;
|
|
unsigned long attrtimeo_timestamp;
|
|
|
|
unsigned long attr_gencount;
|
|
/* "Generation counter" for the attribute cache. This is
|
|
* bumped whenever we update the metadata on the
|
|
* server.
|
|
*/
|
|
unsigned long cache_change_attribute;
|
|
|
|
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
|
|
*/
|
|
__be32 cookieverf[2];
|
|
|
|
unsigned long npages;
|
|
struct nfs_mds_commit_info commit_info;
|
|
|
|
/* Open contexts for shared mmap writes */
|
|
struct list_head open_files;
|
|
|
|
/* Number of in-flight sillydelete RPC calls */
|
|
atomic_t silly_count;
|
|
/* List of deferred sillydelete requests */
|
|
struct hlist_head silly_list;
|
|
wait_queue_head_t waitqueue;
|
|
|
|
#if IS_ENABLED(CONFIG_NFS_V4)
|
|
struct nfs4_cached_acl *nfs4_acl;
|
|
/* NFSv4 state */
|
|
struct list_head open_states;
|
|
struct nfs_delegation __rcu *delegation;
|
|
fmode_t delegation_state;
|
|
struct rw_semaphore rwsem;
|
|
|
|
/* pNFS layout information */
|
|
struct pnfs_layout_hdr *layout;
|
|
#endif /* CONFIG_NFS_V4*/
|
|
/* how many bytes have been written/read and how many bytes queued up */
|
|
__u64 write_io;
|
|
__u64 read_io;
|
|
#ifdef CONFIG_NFS_FSCACHE
|
|
struct fscache_cookie *fscache;
|
|
#endif
|
|
struct inode vfs_inode;
|
|
};
|
|
|
|
/*
|
|
* Cache validity bit flags
|
|
*/
|
|
#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 */
|
|
#define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */
|
|
#define NFS_INO_INVALID_LABEL 0x0080 /* cached label is invalid */
|
|
|
|
/*
|
|
* Bit offsets in flags field
|
|
*/
|
|
#define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */
|
|
#define NFS_INO_STALE (1) /* possible stale inode */
|
|
#define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */
|
|
#define NFS_INO_FLUSHING (4) /* inode is flushing out data */
|
|
#define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */
|
|
#define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */
|
|
#define NFS_INO_COMMIT (7) /* inode is committing unstable writes */
|
|
#define NFS_INO_LAYOUTCOMMIT (9) /* layoutcommit required */
|
|
#define NFS_INO_LAYOUTCOMMITTING (10) /* layoutcommit inflight */
|
|
|
|
static inline struct nfs_inode *NFS_I(const struct inode *inode)
|
|
{
|
|
return container_of(inode, struct nfs_inode, vfs_inode);
|
|
}
|
|
|
|
static inline struct nfs_server *NFS_SB(const struct super_block *s)
|
|
{
|
|
return (struct nfs_server *)(s->s_fs_info);
|
|
}
|
|
|
|
static inline struct nfs_fh *NFS_FH(const struct inode *inode)
|
|
{
|
|
return &NFS_I(inode)->fh;
|
|
}
|
|
|
|
static inline struct nfs_server *NFS_SERVER(const struct inode *inode)
|
|
{
|
|
return NFS_SB(inode->i_sb);
|
|
}
|
|
|
|
static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode)
|
|
{
|
|
return NFS_SERVER(inode)->client;
|
|
}
|
|
|
|
static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode)
|
|
{
|
|
return NFS_SERVER(inode)->nfs_client->rpc_ops;
|
|
}
|
|
|
|
static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode)
|
|
{
|
|
struct nfs_server *nfss = NFS_SERVER(inode);
|
|
return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin;
|
|
}
|
|
|
|
static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode)
|
|
{
|
|
struct nfs_server *nfss = NFS_SERVER(inode);
|
|
return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax;
|
|
}
|
|
|
|
static inline int NFS_STALE(const struct inode *inode)
|
|
{
|
|
return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags);
|
|
}
|
|
|
|
static inline int NFS_FSCACHE(const struct inode *inode)
|
|
{
|
|
return test_bit(NFS_INO_FSCACHE, &NFS_I(inode)->flags);
|
|
}
|
|
|
|
static inline __u64 NFS_FILEID(const struct inode *inode)
|
|
{
|
|
return NFS_I(inode)->fileid;
|
|
}
|
|
|
|
static inline void set_nfs_fileid(struct inode *inode, __u64 fileid)
|
|
{
|
|
NFS_I(inode)->fileid = fileid;
|
|
}
|
|
|
|
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 int nfs_server_capable(struct inode *inode, int cap)
|
|
{
|
|
return NFS_SERVER(inode)->caps & cap;
|
|
}
|
|
|
|
static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf)
|
|
{
|
|
dentry->d_time = verf;
|
|
}
|
|
|
|
/**
|
|
* nfs_save_change_attribute - Returns the inode attribute change cookie
|
|
* @dir - pointer to parent directory inode
|
|
* The "change attribute" is updated every time we finish an operation
|
|
* that will result in a metadata change on the server.
|
|
*/
|
|
static inline unsigned long nfs_save_change_attribute(struct inode *dir)
|
|
{
|
|
return NFS_I(dir)->cache_change_attribute;
|
|
}
|
|
|
|
/**
|
|
* nfs_verify_change_attribute - Detects NFS remote directory changes
|
|
* @dir - pointer to parent directory inode
|
|
* @chattr - previously saved change attribute
|
|
* Return "false" if the verifiers doesn't match the change attribute.
|
|
* This would usually indicate that the directory contents have changed on
|
|
* the server, and that any dentries need revalidating.
|
|
*/
|
|
static inline int nfs_verify_change_attribute(struct inode *dir, unsigned long chattr)
|
|
{
|
|
return chattr == NFS_I(dir)->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 void nfs_invalidate_atime(struct inode *);
|
|
extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *,
|
|
struct nfs_fattr *, struct nfs4_label *);
|
|
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_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr);
|
|
extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *);
|
|
extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *);
|
|
extern void nfs_access_set_mask(struct nfs_access_entry *, u32);
|
|
extern int nfs_permission(struct inode *, int);
|
|
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_attribute_cache_expired(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_setattr(struct dentry *, struct iattr *);
|
|
extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr);
|
|
extern void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr,
|
|
struct nfs4_label *label);
|
|
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, fmode_t mode);
|
|
extern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f_mode);
|
|
extern void nfs_inode_attach_open_context(struct nfs_open_context *ctx);
|
|
extern void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx);
|
|
extern struct nfs_lock_context *nfs_get_lock_context(struct nfs_open_context *ctx);
|
|
extern void nfs_put_lock_context(struct nfs_lock_context *l_ctx);
|
|
extern u64 nfs_compat_user_ino64(u64 fileid);
|
|
extern void nfs_fattr_init(struct nfs_fattr *fattr);
|
|
extern unsigned long nfs_inc_attr_generation_counter(void);
|
|
|
|
extern struct nfs_fattr *nfs_alloc_fattr(void);
|
|
|
|
static inline void nfs_free_fattr(const struct nfs_fattr *fattr)
|
|
{
|
|
kfree(fattr);
|
|
}
|
|
|
|
extern struct nfs_fh *nfs_alloc_fhandle(void);
|
|
|
|
static inline void nfs_free_fhandle(const struct nfs_fh *fh)
|
|
{
|
|
kfree(fh);
|
|
}
|
|
|
|
#ifdef NFS_DEBUG
|
|
extern u32 _nfs_display_fhandle_hash(const struct nfs_fh *fh);
|
|
static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh)
|
|
{
|
|
return _nfs_display_fhandle_hash(fh);
|
|
}
|
|
extern void _nfs_display_fhandle(const struct nfs_fh *fh, const char *caption);
|
|
#define nfs_display_fhandle(fh, caption) \
|
|
do { \
|
|
if (unlikely(nfs_debug & NFSDBG_FACILITY)) \
|
|
_nfs_display_fhandle(fh, caption); \
|
|
} while (0)
|
|
#else
|
|
static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void nfs_display_fhandle(const struct nfs_fh *fh,
|
|
const char *caption)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* linux/fs/nfs/nfsroot.c
|
|
*/
|
|
extern int nfs_root_data(char **root_device, char **root_data); /*__init*/
|
|
/* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */
|
|
extern __be32 root_nfs_parse_addr(char *name); /*__init*/
|
|
|
|
/*
|
|
* linux/fs/nfs/file.c
|
|
*/
|
|
extern const struct file_operations nfs_file_operations;
|
|
#if IS_ENABLED(CONFIG_NFS_V4)
|
|
extern const struct file_operations nfs4_file_operations;
|
|
#endif /* CONFIG_NFS_V4 */
|
|
extern const struct address_space_operations nfs_file_aops;
|
|
extern const struct address_space_operations nfs_dir_aops;
|
|
|
|
static inline struct nfs_open_context *nfs_file_open_context(struct file *filp)
|
|
{
|
|
return filp->private_data;
|
|
}
|
|
|
|
static inline struct rpc_cred *nfs_file_cred(struct file *file)
|
|
{
|
|
if (file != NULL) {
|
|
struct nfs_open_context *ctx =
|
|
nfs_file_open_context(file);
|
|
if (ctx)
|
|
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,
|
|
const struct iovec *iov, unsigned long nr_segs,
|
|
loff_t pos, bool uio);
|
|
extern ssize_t nfs_file_direct_write(struct kiocb *iocb,
|
|
const struct iovec *iov, unsigned long nr_segs,
|
|
loff_t pos, bool uio);
|
|
|
|
/*
|
|
* linux/fs/nfs/dir.c
|
|
*/
|
|
extern const struct file_operations nfs_dir_operations;
|
|
extern const struct dentry_operations nfs_dentry_operations;
|
|
|
|
extern void nfs_force_lookup_revalidate(struct inode *dir);
|
|
extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh,
|
|
struct nfs_fattr *fattr, struct nfs4_label *label);
|
|
extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags);
|
|
extern void nfs_access_zap_cache(struct inode *inode);
|
|
|
|
/*
|
|
* linux/fs/nfs/symlink.c
|
|
*/
|
|
extern const struct inode_operations nfs_symlink_inode_operations;
|
|
|
|
/*
|
|
* 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 const struct inode_operations nfs_mountpoint_inode_operations;
|
|
extern const struct inode_operations nfs_referral_inode_operations;
|
|
extern int nfs_mountpoint_expiry_timeout;
|
|
extern void nfs_release_automount_timer(void);
|
|
|
|
/*
|
|
* linux/fs/nfs/nfs4proc.c
|
|
*/
|
|
#ifdef CONFIG_NFS_V4_SECURITY_LABEL
|
|
extern struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags);
|
|
static inline void nfs4_label_free(struct nfs4_label *label)
|
|
{
|
|
if (label) {
|
|
kfree(label->label);
|
|
kfree(label);
|
|
}
|
|
return;
|
|
}
|
|
#else
|
|
static inline struct nfs4_label *nfs4_label_alloc(struct nfs_server *server, gfp_t flags) { return NULL; }
|
|
static inline void nfs4_label_free(void *label) {}
|
|
#endif
|
|
|
|
/*
|
|
* linux/fs/nfs/unlink.c
|
|
*/
|
|
extern void nfs_complete_unlink(struct dentry *dentry, struct inode *);
|
|
extern void nfs_wait_on_sillyrename(struct dentry *dentry);
|
|
extern void nfs_block_sillyrename(struct dentry *dentry);
|
|
extern void nfs_unblock_sillyrename(struct dentry *dentry);
|
|
extern int nfs_sillyrename(struct inode *dir, struct dentry *dentry);
|
|
|
|
/*
|
|
* linux/fs/nfs/write.c
|
|
*/
|
|
extern int nfs_congestion_kb;
|
|
extern int nfs_writepage(struct page *page, struct writeback_control *wbc);
|
|
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 *, struct nfs_write_data *);
|
|
|
|
/*
|
|
* Try to write back everything synchronously (but check the
|
|
* return value!)
|
|
*/
|
|
extern int nfs_wb_all(struct inode *inode);
|
|
extern int nfs_wb_page(struct inode *inode, struct page* page);
|
|
extern int nfs_wb_page_cancel(struct inode *inode, struct page* page);
|
|
#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4)
|
|
extern int nfs_commit_inode(struct inode *, int);
|
|
extern struct nfs_commit_data *nfs_commitdata_alloc(void);
|
|
extern void nfs_commit_free(struct nfs_commit_data *data);
|
|
#else
|
|
static inline int
|
|
nfs_commit_inode(struct inode *inode, int how)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static inline int
|
|
nfs_have_writebacks(struct inode *inode)
|
|
{
|
|
return NFS_I(inode)->npages != 0;
|
|
}
|
|
|
|
/*
|
|
* 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_readpage_result(struct rpc_task *, struct nfs_read_data *);
|
|
extern int nfs_readpage_async(struct nfs_open_context *, struct inode *,
|
|
struct page *);
|
|
|
|
/*
|
|
* linux/fs/nfs3proc.c
|
|
*/
|
|
#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,
|
|
umode_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,
|
|
umode_t mode)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void nfs3_forget_cached_acls(struct inode *inode)
|
|
{
|
|
}
|
|
#endif /* CONFIG_NFS_V3_ACL */
|
|
|
|
/*
|
|
* inline functions
|
|
*/
|
|
|
|
static inline loff_t nfs_size_to_loff_t(__u64 size)
|
|
{
|
|
if (size > (__u64) OFFSET_MAX - 1)
|
|
return OFFSET_MAX - 1;
|
|
return (loff_t) size;
|
|
}
|
|
|
|
static inline ino_t
|
|
nfs_fileid_to_ino_t(u64 fileid)
|
|
{
|
|
ino_t ino = (ino_t) fileid;
|
|
if (sizeof(ino_t) < sizeof(u64))
|
|
ino ^= fileid >> (sizeof(u64)-sizeof(ino_t)) * 8;
|
|
return ino;
|
|
}
|
|
|
|
#define NFS_JUKEBOX_RETRY_TIME (5 * HZ)
|
|
|
|
|
|
# undef ifdebug
|
|
# ifdef NFS_DEBUG
|
|
# define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac))
|
|
# define NFS_IFDEBUG(x) x
|
|
# else
|
|
# define ifdebug(fac) if (0)
|
|
# define NFS_IFDEBUG(x)
|
|
# endif
|
|
#endif
|