--- /dev/null
+/*
+ * NFS internal definitions
+ */
+
+#include <linux/mount.h>
+
+#define NFS_PAGE_WRITING 0
+#define NFS_PAGE_CACHED 1
+
+#define PageNfsBit(bit, page) test_bit(bit, &(page)->private)
+
+#define SetPageNfsBit(bit, page) \
+do { \
+ SetPagePrivate((page)); \
+ set_bit(bit, &(page)->private); \
+} while(0)
+
+#define ClearPageNfsBit(bit, page) \
+do { \
+ clear_bit(bit, &(page)->private); \
+} while(0)
+
+#define PageNfsWriting(page) PageNfsBit(NFS_PAGE_WRITING, (page))
+#define SetPageNfsWriting(page) SetPageNfsBit(NFS_PAGE_WRITING, (page))
+#define ClearPageNfsWriting(page) ClearPageNfsBit(NFS_PAGE_WRITING, (page))
+
+#define PageNfsCached(page) PageNfsBit(NFS_PAGE_CACHED, (page))
+#define SetPageNfsCached(page) SetPageNfsBit(NFS_PAGE_CACHED, (page))
+#define ClearPageNfsCached(page) ClearPageNfsBit(NFS_PAGE_CACHED, (page))
+
+struct nfs_string;
+struct nfs_mount_data;
+struct nfs4_mount_data;
+
+/* Maximum number of readahead requests
+ * FIXME: this should really be a sysctl so that users may tune it to suit
+ * their needs. People that do NFS over a slow network, might for
+ * instance want to reduce it to something closer to 1 for improved
+ * interactive response.
+ */
+#define NFS_MAX_READAHEAD (RPC_DEF_SLOT_TABLE - 1)
+
+struct nfs_clone_mount {
+ const struct super_block *sb;
+ const struct dentry *dentry;
+ struct nfs_fh *fh;
+ struct nfs_fattr *fattr;
+ char *hostname;
+ char *mnt_path;
+ struct sockaddr_in *addr;
+ rpc_authflavor_t authflavor;
+};
+
+/*
+ * include filesystem caching stuff here
+ */
+#include "fscache.h"
+
+/* client.c */
+extern struct rpc_program nfs_program;
+
+extern void nfs_put_client(struct nfs_client *);
+extern struct nfs_client *nfs_find_client(const struct sockaddr_in *, int);
+extern struct nfs_server *nfs_create_server(const struct nfs_mount_data *,
+ struct nfs_fh *);
+extern struct nfs_server *nfs4_create_server(const struct nfs4_mount_data *,
+ const char *,
+ const struct sockaddr_in *,
+ const char *,
+ const char *,
+ rpc_authflavor_t,
+ struct nfs_fh *);
+extern struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *,
+ struct nfs_fh *);
+extern void nfs_free_server(struct nfs_server *server);
+extern struct nfs_server *nfs_clone_server(struct nfs_server *,
+ struct nfs_fh *,
+ struct nfs_fattr *);
+#ifdef CONFIG_PROC_FS
+extern int __init nfs_fs_proc_init(void);
+extern void nfs_fs_proc_exit(void);
+#else
+static inline int nfs_fs_proc_init(void)
+{
+ return 0;
+}
+static inline void nfs_fs_proc_exit(void)
+{
+}
+#endif
+
+/* nfs4namespace.c */
+#ifdef CONFIG_NFS_V4
+extern struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry);
+#else
+static inline
+struct vfsmount *nfs_do_refmount(const struct vfsmount *mnt_parent, struct dentry *dentry)
+{
+ return ERR_PTR(-ENOENT);
+}
+#endif
+
+/* callback_xdr.c */
+extern struct svc_version nfs4_callback_version1;
+
+/* pagelist.c */
+extern int __init nfs_init_nfspagecache(void);
+extern void nfs_destroy_nfspagecache(void);
+extern int __init nfs_init_readpagecache(void);
+extern void nfs_destroy_readpagecache(void);
+extern int __init nfs_init_writepagecache(void);
+extern void nfs_destroy_writepagecache(void);
+
+#ifdef CONFIG_NFS_DIRECTIO
+extern int __init nfs_init_directcache(void);
+extern void nfs_destroy_directcache(void);
+#else
+#define nfs_init_directcache() (0)
+#define nfs_destroy_directcache() do {} while(0)
+#endif
+
+/* nfs2xdr.c */
+extern int nfs_stat_to_errno(int);
+extern struct rpc_procinfo nfs_procedures[];
+extern u32 * nfs_decode_dirent(u32 *, struct nfs_entry *, int);
+
+/* nfs3xdr.c */
+extern struct rpc_procinfo nfs3_procedures[];
+extern u32 *nfs3_decode_dirent(u32 *, struct nfs_entry *, int);
+
+/* nfs4xdr.c */
+#ifdef CONFIG_NFS_V4
+extern u32 *nfs4_decode_dirent(u32 *p, struct nfs_entry *entry, int plus);
+#endif
+
+/* nfs4proc.c */
+#ifdef CONFIG_NFS_V4
+extern struct rpc_procinfo nfs4_procedures[];
+
+extern int nfs4_proc_fs_locations(struct inode *dir, struct dentry *dentry,
+ struct nfs4_fs_locations *fs_locations,
+ struct page *page);
+#endif
+
+/* inode.c */
+extern struct inode *nfs_alloc_inode(struct super_block *sb);
+extern void nfs_destroy_inode(struct inode *);
+extern int nfs_write_inode(struct inode *,int);
+extern void nfs_clear_inode(struct inode *);
+#ifdef CONFIG_NFS_V4
+extern void nfs4_clear_inode(struct inode *);
+#endif
+
+/* super.c */
+extern struct file_system_type nfs_xdev_fs_type;
+#ifdef CONFIG_NFS_V4
+extern struct file_system_type nfs4_xdev_fs_type;
+extern struct file_system_type nfs4_referral_fs_type;
+#endif
+
+extern struct rpc_stat nfs_rpcstat;
+
+extern int __init register_nfs_fs(void);
+extern void __exit unregister_nfs_fs(void);
+
+/* namespace.c */
+extern char *nfs_path(const char *base,
+ const struct dentry *droot,
+ const struct dentry *dentry,
+ char *buffer, ssize_t buflen);
+
+/* getroot.c */
+extern struct dentry *nfs_get_root(struct super_block *, struct nfs_fh *);
+#ifdef CONFIG_NFS_V4
+extern struct dentry *nfs4_get_root(struct super_block *, struct nfs_fh *);
+
+extern int nfs4_path_walk(struct nfs_server *server,
+ struct nfs_fh *mntfh,
+ const char *path);
+#endif
+
+/* read.c */
+extern int nfs_readpage_async(struct nfs_open_context *, struct inode *, struct page *);
+
+/*
+ * Determine the device name as a string
+ */
+static inline char *nfs_devname(const struct vfsmount *mnt_parent,
+ const struct dentry *dentry,
+ char *buffer, ssize_t buflen)
+{
+ return nfs_path(mnt_parent->mnt_devname, mnt_parent->mnt_root,
+ dentry, buffer, buflen);
+}
+
+/*
+ * Determine the actual block size (and log2 thereof)
+ */
+static inline
+unsigned long nfs_block_bits(unsigned long bsize, unsigned char *nrbitsp)
+{
+ /* make sure blocksize is a power of two */
+ if ((bsize & (bsize - 1)) || nrbitsp) {
+ unsigned char nrbits;
+
+ for (nrbits = 31; nrbits && !(bsize & (1 << nrbits)); nrbits--)
+ ;
+ bsize = 1 << nrbits;
+ if (nrbitsp)
+ *nrbitsp = nrbits;
+ }
+
+ return bsize;
+}
+
+/*
+ * Calculate the number of 512byte blocks used.
+ */
+static inline unsigned long nfs_calc_block_size(u64 tsize)
+{
+ loff_t used = (tsize + 511) >> 9;
+ return (used > ULONG_MAX) ? ULONG_MAX : used;
+}
+
+/*
+ * Compute and set NFS server blocksize
+ */
+static inline
+unsigned long nfs_block_size(unsigned long bsize, unsigned char *nrbitsp)
+{
+ if (bsize < NFS_MIN_FILE_IO_SIZE)
+ bsize = NFS_DEF_FILE_IO_SIZE;
+ else if (bsize >= NFS_MAX_FILE_IO_SIZE)
+ bsize = NFS_MAX_FILE_IO_SIZE;
+
+ return nfs_block_bits(bsize, nrbitsp);
+}
+
+/*
+ * Determine the maximum file size for a superblock
+ */
+static inline
+void nfs_super_set_maxbytes(struct super_block *sb, __u64 maxfilesize)
+{
+ sb->s_maxbytes = (loff_t)maxfilesize;
+ if (sb->s_maxbytes > MAX_LFS_FILESIZE || sb->s_maxbytes <= 0)
+ sb->s_maxbytes = MAX_LFS_FILESIZE;
+}
git://git.onelab.eu / linux-2.6.git / blobdiff