| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef LIB_ZXIO_INCLUDE_LIB_ZXIO_OPS_H_ |
| #define LIB_ZXIO_INCLUDE_LIB_ZXIO_OPS_H_ |
| |
| #include <lib/zxio/types.h> |
| #include <lib/zxio/zxio.h> |
| #include <zircon/compiler.h> |
| #include <zircon/types.h> |
| |
| __BEGIN_CDECLS |
| |
| // A table of operations for a zxio_t. |
| // |
| // Most of the functions that operate on a zxio_t call through this operations |
| // table to actually perform the operation. Use |zxio_init| to initialize a |
| // zxio_t with a custom operations table. |
| typedef struct zxio_ops { |
| // Releases all resources held by |io|. |
| // After |close| returns, any further ops must not be called relative to |io|. |
| zx_status_t (*close)(zxio_t* io); |
| |
| // After |release| returns, any further ops most not be called relative to |io|, |
| // except |close|. |
| zx_status_t (*release)(zxio_t* io, zx_handle_t* out_handle); |
| |
| zx_status_t (*borrow)(zxio_t* io, zx_handle_t* out_handle); |
| |
| // TODO(tamird/abarth): clarify the semantics of this operation. fdio currently relies on this to |
| // implement POSIX-style dup() which expects the seek pointer to be preserved, but zxio_vmo_clone |
| // does not currently produce those semantics. |
| zx_status_t (*reopen)(zxio_t* io, zxio_reopen_flags_t flags, zx_handle_t* out_handle); |
| void (*wait_begin)(zxio_t* io, zxio_signals_t zxio_signals, zx_handle_t* out_handle, |
| zx_signals_t* out_zx_signals); |
| void (*wait_end)(zxio_t* io, zx_signals_t zx_signals, zxio_signals_t* out_zxio_signals); |
| zx_status_t (*sync)(zxio_t* io); |
| zx_status_t (*attr_get)(zxio_t* io, zxio_node_attributes_t* out_attr); |
| zx_status_t (*attr_set)(zxio_t* io, const zxio_node_attributes_t* attr); |
| zx_status_t (*readv)(zxio_t* io, const zx_iovec_t* vector, size_t vector_count, |
| zxio_flags_t flags, size_t* out_actual); |
| zx_status_t (*readv_at)(zxio_t* io, zx_off_t offset, const zx_iovec_t* vector, |
| size_t vector_count, zxio_flags_t flags, size_t* out_actual); |
| zx_status_t (*writev)(zxio_t* io, const zx_iovec_t* vector, size_t vector_count, |
| zxio_flags_t flags, size_t* out_actual); |
| zx_status_t (*writev_at)(zxio_t* io, zx_off_t offset, const zx_iovec_t* vector, |
| size_t vector_count, zxio_flags_t flags, size_t* out_actual); |
| zx_status_t (*seek)(zxio_t* io, zxio_seek_origin_t start, int64_t offset, size_t* out_offset); |
| zx_status_t (*truncate)(zxio_t* io, uint64_t length); |
| zx_status_t (*flags_get)(zxio_t* io, uint32_t* out_flags); |
| zx_status_t (*flags_set)(zxio_t* io, uint32_t flags); |
| zx_status_t (*vmo_get)(zxio_t* io, zxio_vmo_flags_t flags, zx_handle_t* out_vmo, |
| size_t* out_size); |
| zx_status_t (*get_read_buffer_available)(zxio_t* io, size_t* out_available); |
| zx_status_t (*shutdown)(zxio_t* io, zxio_shutdown_options_t options); |
| zx_status_t (*open)(zxio_t* io, uint32_t flags, uint32_t mode, const char* path, size_t path_len, |
| zxio_storage_t* storage); |
| zx_status_t (*open_async)(zxio_t* io, uint32_t flags, uint32_t mode, const char* path, |
| size_t path_len, zx_handle_t request); |
| zx_status_t (*add_inotify_filter)(zxio_t* io, const char* path, size_t path_len, uint32_t mask, |
| uint32_t watch_descriptor, zx_handle_t socket); |
| zx_status_t (*unlink)(zxio_t* io, const char* name, size_t name_len, int flags); |
| zx_status_t (*token_get)(zxio_t* io, zx_handle_t* out_token); |
| zx_status_t (*rename)(zxio_t* io, const char* old_path, size_t old_path_len, |
| zx_handle_t dst_token, const char* new_path, size_t new_path_len); |
| zx_status_t (*link)(zxio_t* io, const char* src_path, size_t src_path_len, zx_handle_t dst_token, |
| const char* dst_path, size_t dst_path_len); |
| zx_status_t (*dirent_iterator_init)(zxio_t* io, zxio_dirent_iterator_t* iterator); |
| zx_status_t (*dirent_iterator_next)(zxio_t* io, zxio_dirent_iterator_t* iterator, |
| zxio_dirent_t* inout_entry); |
| void (*dirent_iterator_destroy)(zxio_t* io, zxio_dirent_iterator_t* iterator); |
| zx_status_t (*isatty)(zxio_t* io, bool* tty); |
| zx_status_t (*get_window_size)(zxio_t* io, uint32_t* width, uint32_t* height); |
| zx_status_t (*set_window_size)(zxio_t* io, uint32_t width, uint32_t height); |
| zx_status_t (*advisory_lock)(zxio_t* io, struct advisory_lock_req* req); |
| zx_status_t (*watch_directory)(zxio_t* io, zxio_watch_directory_cb cb, zx_time_t deadline, |
| void* context); |
| } zxio_ops_t; |
| |
| // Initialize a |zxio_t| object with the given |ops| table. |
| void zxio_init(zxio_t* io, const zxio_ops_t* ops); |
| |
| // Get the ops table used by the given |zxio_t| object. |
| const zxio_ops_t* zxio_get_ops(zxio_t* io); |
| |
| __END_CDECLS |
| |
| #endif // LIB_ZXIO_INCLUDE_LIB_ZXIO_OPS_H_ |