LCOM1920-T02G10

#ifndef _MINIX_VTREEFS_H

#define _MINIX_VTREEFS_H

struct inode;

typedef int index_t;

typedef void *cbdata_t;

#define NO_INDEX        ((index_t) -1)

/* Maximum file name length, excluding terminating null character, for which

 * the name will be allocated statically. Longer names will be allocated

 * dynamically, and should not be used for system-critical file systems.

 */

#define PNAME_MAX        24

struct inode_stat {

        mode_t mode;                /* file mode (type and permissions) */

        uid_t uid;                /* user ID */

        gid_t gid;                /* group ID */

        off_t size;                /* file size */

        dev_t dev;                /* device number (for char/block type files) */

};

struct fs_hooks {

        void (*init_hook)(void);

        void (*cleanup_hook)(void);

        int (*lookup_hook)(struct inode *inode, char *name, cbdata_t cbdata);

        int (*getdents_hook)(struct inode *inode, cbdata_t cbdata);

        ssize_t (*read_hook)(struct inode *inode, char *ptr, size_t len,

            off_t off, cbdata_t cbdata);

        ssize_t (*write_hook)(struct inode *inode, char *ptr, size_t max,

            off_t off, cbdata_t cbdata);

        int (*trunc_hook)(struct inode *inode, off_t offset, cbdata_t cbdata);

        int (*mknod_hook)(struct inode *inode, char *name,

            struct inode_stat *stat, cbdata_t cbdata);

        int (*unlink_hook)(struct inode *inode, cbdata_t cbdata);

        int (*slink_hook)(struct inode *inode, char *name,

            struct inode_stat *stat, char *path, cbdata_t cbdata);

        int (*rdlink_hook)(struct inode *inode, char *ptr, size_t max,

            cbdata_t cbdata);

        int (*chstat_hook)(struct inode *inode, struct inode_stat *stat,

            cbdata_t cbdata);

        void (*message_hook)(message *m, int ipc_status);

};

extern struct inode *add_inode(struct inode *parent, const char *name,

        index_t index, const struct inode_stat *stat,

        index_t nr_indexed_slots, cbdata_t cbdata);

extern void delete_inode(struct inode *inode);

extern struct inode *get_inode_by_name(const struct inode *parent,

        const char *name);

extern struct inode *get_inode_by_index(const struct inode *parent,

        index_t index);

extern const char *get_inode_name(const struct inode *inode);

extern index_t get_inode_index(const struct inode *inode);

extern index_t get_inode_slots(const struct inode *inode);

extern cbdata_t get_inode_cbdata(const struct inode *inode);

extern void *get_inode_extra(const struct inode *inode);

extern struct inode *get_root_inode(void);

extern struct inode *get_parent_inode(const struct inode *inode);

extern struct inode *get_first_inode(const struct inode *parent);

extern struct inode *get_next_inode(const struct inode *previous);

extern void get_inode_stat(const struct inode *inode, struct inode_stat *stat);

extern void set_inode_stat(struct inode *inode, struct inode_stat *stat);

extern void run_vtreefs(struct fs_hooks *hooks, unsigned int nr_inodes,

        size_t inode_extra, struct inode_stat *stat, index_t nr_indexed_slots,

        size_t buf_size);

#endif /* _MINIX_VTREEFS_H */