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    atomic_t phone_futex;   /**< Phone serializing futex. */
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    atomic_t phone_futex;   /**< Phone serializing futex. */
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    ipcarg_t phone;
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    ipcarg_t phone;
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} fs_info_t;
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} fs_info_t;
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/**
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/**
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 * Instances of this type represent a file system node (e.g. directory, file).
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 * VFS_PAIR uniquely represents a file system instance.
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 */
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#define VFS_PAIR    \
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    int fs_handle;  \
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    int dev_handle;
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/**
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 * They are abstracted away from any file system implementation and contain just
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 * VFS_TRIPLET uniquely identifies a file system node (e.g. directory, file) but
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 * enough bits to uniquely identify the object in its file system instance.
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 * doesn't contain any state. For a stateful structure, see vfs_node_t.
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 *
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 *
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 * @note    fs_handle, dev_handle and index are meant to be returned in one
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 * @note    fs_handle, dev_handle and index are meant to be returned in one
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 *      IPC reply.
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 *      IPC reply.
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 */
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 */
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#define VFS_TRIPLET \
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    VFS_PAIR;   \
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    uint64_t index;
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typedef struct {
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    VFS_PAIR;
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} vfs_pair_t;
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typedef struct {
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    VFS_TRIPLET;
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} vfs_triplet_t;
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/**
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 * Instances of this type represent an active, in-memory VFS node and any state
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 * which may be associated with it.
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 */
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typedef struct {
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typedef struct {
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    int fs_handle;      /**< Global file system ID. */
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    VFS_TRIPLET;        /**< Identity of the node. */
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    int dev_handle;     /**< Global mount device devno. */
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    atomic_t refcnt;    /**< Usage counter. */
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    uint64_t index;     /**< Index of the node on its file system. */
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} vfs_node_t;
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} vfs_node_t;
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/**
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/**
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 * Instances of this type represent an open file. If the file is opened by more
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 * Instances of this type represent an open file. If the file is opened by more
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 * than one task, there will be a separate structure allocated for each task.
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 * than one task, there will be a separate structure allocated for each task.
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    off_t pos;
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    off_t pos;
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} vfs_file_t;
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} vfs_file_t;
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extern link_t fs_head;      /**< List of registered file systems. */
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extern link_t fs_head;      /**< List of registered file systems. */
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extern vfs_node_t rootfs;   /**< Root node of the root file system. */
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extern vfs_triplet_t rootfs;    /**< Root node of the root file system. */
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#define MAX_PATH_LEN        (64 * 1024)
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#define MAX_PATH_LEN        (64 * 1024)
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#define PLB_SIZE        (2 * MAX_PATH_LEN)
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#define PLB_SIZE        (2 * MAX_PATH_LEN)
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extern int vfs_grab_phone(int);
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extern int vfs_grab_phone(int);
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extern void vfs_release_phone(int);
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extern void vfs_release_phone(int);
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extern int fs_name_to_handle(char *, bool);
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extern int fs_name_to_handle(char *, bool);
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extern int vfs_lookup_internal(char *, size_t, vfs_node_t *, vfs_node_t *);
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extern int vfs_lookup_internal(char *, size_t, vfs_triplet_t *, vfs_pair_t *);
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#define MAX_OPEN_FILES  128
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#define MAX_OPEN_FILES  128
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extern bool vfs_conn_open_files_init(void);
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extern bool vfs_conn_open_files_init(void);
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