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#ifndef LINUX_EXPORTFS_H
#define LINUX_EXPORTFS_H 1
#include <linux/types.h>
struct dentry;
struct inode;
struct super_block;
struct vfsmount;
#define MAX_HANDLE_SZ 128
enum fid_type {
FILEID_ROOT = 0,
FILEID_INO32_GEN = 1,
FILEID_INO32_GEN_PARENT = 2,
FILEID_BTRFS_WITHOUT_PARENT = 0x4d,
FILEID_BTRFS_WITH_PARENT = 0x4e,
FILEID_BTRFS_WITH_PARENT_ROOT = 0x4f,
FILEID_UDF_WITHOUT_PARENT = 0x51,
FILEID_UDF_WITH_PARENT = 0x52,
FILEID_NILFS_WITHOUT_PARENT = 0x61,
FILEID_NILFS_WITH_PARENT = 0x62,
};
struct fid {
union {
struct {
u32 ino;
u32 gen;
u32 parent_ino;
u32 parent_gen;
} i32;
struct {
u32 block;
u16 partref;
u16 parent_partref;
u32 generation;
u32 parent_block;
u32 parent_generation;
} udf;
__u32 raw[0];
};
};
struct export_operations {
int (*encode_fh)(struct dentry *de, __u32 *fh, int *max_len,
int connectable);
struct dentry * (*fh_to_dentry)(struct super_block *sb, struct fid *fid,
int fh_len, int fh_type);
struct dentry * (*fh_to_parent)(struct super_block *sb, struct fid *fid,
int fh_len, int fh_type);
int (*get_name)(struct dentry *parent, char *name,
struct dentry *child);
struct dentry * (*get_parent)(struct dentry *child);
int (*commit_metadata)(struct inode *inode);
};
extern int exportfs_encode_fh(struct dentry *dentry, struct fid *fid,
int *max_len, int connectable);
extern struct dentry *exportfs_decode_fh(struct vfsmount *mnt, struct fid *fid,
int fh_len, int fileid_type, int (*acceptable)(void *, struct dentry *),
void *context);
extern struct dentry *generic_fh_to_dentry(struct super_block *sb,
struct fid *fid, int fh_len, int fh_type,
struct inode *(*get_inode) (struct super_block *sb, u64 ino, u32 gen));
extern struct dentry *generic_fh_to_parent(struct super_block *sb,
struct fid *fid, int fh_len, int fh_type,
struct inode *(*get_inode) (struct super_block *sb, u64 ino, u32 gen));
#endif
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