+
+/** @brief Get the available speed of cpu associated to a host */
+XBT_PUBLIC(double) surf_host_get_available_speed(sg_host_t host);
+
+/** @brief Create a sleep action on the given host */
+XBT_PUBLIC(surf_action_t) surf_host_sleep(sg_host_t host, double duration);
+
+/** @brief Create a file opening action on the given host */
+XBT_PUBLIC(surf_action_t) surf_host_open(sg_host_t host, const char* fullpath);
+
+/** @brief Create a file closing action on the given host */
+XBT_PUBLIC(surf_action_t) surf_host_close(sg_host_t host, surf_file_t fd);
+
+/** @brief Create a file reading action on the given host */
+XBT_PUBLIC(surf_action_t) surf_host_read(sg_host_t host, surf_file_t fd, sg_size_t size);
+
+/** @brief Create a file writing action on the given host */
+XBT_PUBLIC(surf_action_t) surf_host_write(sg_host_t host, surf_file_t fd, sg_size_t size);
+
+/**
+ * @brief Get the informations of a file descriptor
+ * @details The returned xbt_dynar_t contains:
+ * - the size of the file,
+ * - the mount point,
+ * - the storage name,
+ * - the storage typeId,
+ * - the storage content type
+ *
+ * @param host The surf host
+ * @param fd The file descriptor
+ * @return An xbt_dynar_t with the file informations
+ */
+XBT_PUBLIC(xbt_dynar_t) surf_host_get_info(sg_host_t host, surf_file_t fd);
+
+/**
+ * @brief Get the available space of the storage at the mount point
+ *
+ * @param resource The surf host
+ * @param name The mount point
+ * @return The amount of available space in bytes
+ */
+XBT_PUBLIC(sg_size_t) surf_host_get_free_size(sg_host_t resource, const char* name);
+
+/**
+ * @brief Get the used space of the storage at the mount point
+ *
+ * @param resource The surf host
+ * @param name The mount point
+ * @return The amount of used space in bytes
+ */
+XBT_PUBLIC(sg_size_t) surf_host_get_used_size(sg_host_t resource, const char* name);
+
+/** @brief Get the list of VMs hosted on the host */
+XBT_PUBLIC(xbt_dynar_t) surf_host_get_vms(sg_host_t resource);
+
+/** @brief Retrieve the params of that VM
+ * @details You can use fields ramsize and overcommit on a PM, too.
+ */
+XBT_PUBLIC(void) surf_host_get_params(sg_host_t resource, vm_params_t params);
+
+/** @brief Sets the params of that VM/PM
+ * @details You can use fields ramsize and overcommit on a PM, too.
+ */
+XBT_PUBLIC(void) surf_host_set_params(sg_host_t resource, vm_params_t params);
+
+/**
+ * @brief Destroy a VM
+ *
+ * @param resource The surf vm
+ */
+XBT_PUBLIC(void) surf_vm_destroy(sg_host_t resource);
+
+/** @brief Suspend a VM */
+XBT_PUBLIC(void) surf_vm_suspend(sg_host_t resource);
+
+/** @brief Resume a VM */
+XBT_PUBLIC(void) surf_vm_resume(sg_host_t resource);
+
+/**
+ * @brief Save the VM (Not yet implemented)
+ *
+ * @param resource The surf vm
+ */
+XBT_PUBLIC(void) surf_vm_save(sg_host_t resource);
+
+/**
+ * @brief Restore the VM (Not yet implemented)
+ *
+ * @param resource The surf vm
+ */
+XBT_PUBLIC(void) surf_vm_restore(sg_host_t resource);
+
+/**
+ * @brief Migrate the VM to the destination host
+ *
+ * @param resource The surf vm
+ * @param ind_vm_ws_dest The destination host
+ */
+XBT_PUBLIC(void) surf_vm_migrate(sg_host_t resource, sg_host_t ind_vm_ws_dest);
+
+/**
+ * @brief Get the physical machine hosting the VM
+ *
+ * @param resource The surf vm
+ * @return The physical machine hosting the VM
+ */
+XBT_PUBLIC(sg_host_t) surf_vm_get_pm(sg_host_t resource);
+
+/**
+ * @brief [brief description]
+ * @details [long description]
+ *
+ * @param resource [description]
+ * @param bound [description]
+ */
+XBT_PUBLIC(void) surf_vm_set_bound(sg_host_t resource, double bound);
+
+/**
+ * @brief [brief description]
+ * @details [long description]
+ *
+ * @param resource [description]
+ * @param cpu [description]
+ * @param mask [description]
+ */
+XBT_PUBLIC(void) surf_vm_set_affinity(sg_host_t resource, sg_host_t cpu, unsigned long mask);
+
+/**
+ * @brief Get the list of storages attached to an host
+ *
+ * @param host The surf host
+ * @return Dictionary of storage
+ */
+XBT_PUBLIC(xbt_dynar_t) surf_host_get_attached_storage_list(sg_host_t host);
+
+/**
+ * @brief Unlink a file descriptor
+ *
+ * @param host The surf host
+ * @param fd The file descriptor
+ *
+ * @return 0 if failed to unlink, 1 otherwise
+ */
+XBT_PUBLIC(int) surf_host_unlink(sg_host_t host, surf_file_t fd);
+
+/**
+ * @brief Get the size of a file on a host
+ *
+ * @param host The surf host
+ * @param fd The file descriptor
+ *
+ * @return The size in bytes of the file
+ */
+XBT_PUBLIC(size_t) surf_host_get_size(sg_host_t host, surf_file_t fd);
+
+/**
+ * @brief Get the current position of the file descriptor
+ *
+ * @param host The surf host
+ * @param fd The file descriptor
+ * @return The current position of the file descriptor
+ */
+XBT_PUBLIC(size_t) surf_host_file_tell(sg_host_t host, surf_file_t fd);
+
+/**
+ * @brief Move a file to another location on the *same mount point*.
+ * @details [long description]
+ *
+ * @param host The surf host
+ * @param fd The file descriptor
+ * @param fullpath The new full path
+ *
+ * @return MSG_OK if successful, otherwise MSG_TASK_CANCELED
+ */
+XBT_PUBLIC(int) surf_host_file_move(sg_host_t host, surf_file_t fd, const char* fullpath);
+
+/**
+ * @brief Set the position indictator assiociated with the file descriptor to a new position
+ * @details [long description]
+ *
+ * @param host The surf host
+ * @param fd The file descriptor
+ * @param offset The offset from the origin
+ * @param origin Position used as a reference for the offset
+ * - SEEK_SET: beginning of the file
+ * - SEEK_CUR: current position indicator
+ * - SEEK_END: end of the file
+ * @return MSG_OK if successful, otherwise MSG_TASK_CANCELED
+ */
+XBT_PUBLIC(int) surf_host_file_seek(sg_host_t host,
+ surf_file_t fd, sg_offset_t offset,
+ int origin);
+
+/**
+ * @brief Get the content of a storage
+ *
+ * @param resource The surf storage
+ * @return A xbt_dict_t with path as keys and size in bytes as values
+ */
+XBT_PUBLIC(xbt_dict_t) surf_storage_get_content(surf_resource_t resource);
+
+/**
+ * @brief Get the size in bytes of a storage
+ *
+ * @param resource The surf storage
+ * @return The size in bytes of the storage
+ */
+XBT_PUBLIC(sg_size_t) surf_storage_get_size(surf_resource_t resource);
+
+/**
+ * @brief Get the available size in bytes of a storage
+ *
+ * @param resource The surf storage
+ * @return The available size in bytes of the storage
+ */
+XBT_PUBLIC(sg_size_t) surf_storage_get_free_size(surf_resource_t resource);
+
+/**
+ * @brief Get the size in bytes of a storage
+ *
+ * @param resource The surf storage
+ * @return The used size in bytes of the storage
+ */
+XBT_PUBLIC(sg_size_t) surf_storage_get_used_size(surf_resource_t resource);
+
+/** @brief return the properties set associated to that storage */
+XBT_PUBLIC(xbt_dict_t) surf_storage_get_properties(surf_resource_t resource);
+
+/**
+ * @brief Get the data associated to the action
+ *
+ * @param action The surf action
+ * @return The data associated to the action
+ */
+XBT_PUBLIC(void*) surf_action_get_data(surf_action_t action);
+
+/**
+ * @brief Set the data associated to the action
+ * @details [long description]
+ *
+ * @param action The surf action
+ * @param data The new data associated to the action
+ */
+XBT_PUBLIC(void) surf_action_set_data(surf_action_t action, void *data);
+
+/**
+ * @brief Get the start time of an action
+ *
+ * @param action The surf action
+ * @return The start time in seconds from the beginning of the simulation
+ */
+XBT_PUBLIC(double) surf_action_get_start_time(surf_action_t action);
+
+/**
+ * @brief Get the finish time of an action
+ *
+ * @param action The surf action
+ * @return The finish time in seconds from the beginning of the simulation
+ */
+XBT_PUBLIC(double) surf_action_get_finish_time(surf_action_t action);
+
+/**
+ * @brief Get the remains amount of work to do of an action
+ *
+ * @param action The surf action
+ * @return The remains amount of work to do
+ */
+XBT_PUBLIC(double) surf_action_get_remains(surf_action_t action);
+
+/**
+ * @brief Suspend an action
+ *
+ * @param action The surf action
+ */
+XBT_PUBLIC(void) surf_action_suspend(surf_action_t action);
+
+/**
+ * @brief Resume an action
+ *
+ * @param action The surf action
+ */
+XBT_PUBLIC(void) surf_action_resume(surf_action_t action);
+
+/**
+ * @brief Cancel an action
+ *
+ * @param action The surf action
+ */
+XBT_PUBLIC(void) surf_action_cancel(surf_action_t action);
+
+/**
+ * @brief Set the priority of an action
+ * @details [long description]
+ *
+ * @param action The surf action
+ * @param priority The new priority [TODO]
+ */
+XBT_PUBLIC(void) surf_action_set_priority(surf_action_t action, double priority);
+
+/**
+ * @brief Set the category of an action
+ * @details [long description]
+ *
+ * @param action The surf action
+ * @param category The new category of the action
+ */
+XBT_PUBLIC(void) surf_action_set_category(surf_action_t action, const char *category);
+
+/**
+ * @brief Get the state of an action
+ *
+ * @param action The surf action
+ * @return The state of the action
+ */
+XBT_PUBLIC(e_surf_action_state_t) surf_action_get_state(surf_action_t action);
+
+/**
+ * @brief Get the cost of an action
+ *
+ * @param action The surf action
+ * @return The cost of the action
+ */
+XBT_PUBLIC(double) surf_action_get_cost(surf_action_t action);
+
+/**
+ * @brief [brief desrciption]
+ * @details [long description]
+ *
+ * @param action The surf cpu action
+ * @param cpu [description]
+ * @param mask [description]
+ */
+XBT_PUBLIC(void) surf_cpu_action_set_affinity(surf_action_t action, sg_host_t cpu, unsigned long mask);
+
+/**
+ * @brief [brief description]
+ * @details [long description]
+ *
+ * @param action The surf cpu action
+ * @param bound [description]
+ */
+XBT_PUBLIC(void) surf_cpu_action_set_bound(surf_action_t action, double bound);
+
+/**
+ * @brief [brief description]
+ * @details [long description]
+ *
+ * @param action The surf network action
+ */
+XBT_PUBLIC(double) surf_network_action_get_latency_limited(surf_action_t action);
+
+/**
+ * @brief Get the file associated to a storage action
+ *
+ * @param action The surf storage action
+ * @return The file associated to a storage action
+ */
+XBT_PUBLIC(surf_file_t) surf_storage_action_get_file(surf_action_t action);
+
+/**
+ * @brief Get the result dictionary of an ls action
+ *
+ * @param action The surf storage action
+ * @return The dictionry listing a path
+ */
+XBT_PUBLIC(xbt_dict_t) surf_storage_action_get_ls_dict(surf_action_t action);
+
+
+/**
+ * @brief Get the host the storage is attached to
+ *
+ * @param resource The surf storage
+ * @return The host name
+ * may not exist.
+ */
+XBT_PUBLIC(const char * ) surf_storage_get_host(surf_resource_t resource);
+
+/** @} */