| 1 | /*
|
|---|
| 2 | * Copyright (c) 2011 Martin Decky
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | /** @addtogroup libc
|
|---|
| 30 | * @{
|
|---|
| 31 | */
|
|---|
| 32 | /** @file
|
|---|
| 33 | */
|
|---|
| 34 |
|
|---|
| 35 | #ifndef LIBC_PRIVATE_STDIO_H_
|
|---|
| 36 | #define LIBC_PRIVATE_STDIO_H_
|
|---|
| 37 |
|
|---|
| 38 | #include <adt/list.h>
|
|---|
| 39 | #include <stdio.h>
|
|---|
| 40 | #include <async.h>
|
|---|
| 41 |
|
|---|
| 42 | struct _IO_FILE {
|
|---|
| 43 | /** Linked list pointer. */
|
|---|
| 44 | link_t link;
|
|---|
| 45 |
|
|---|
| 46 | /** Underlying file descriptor. */
|
|---|
| 47 | int fd;
|
|---|
| 48 |
|
|---|
| 49 | /** Error indicator. */
|
|---|
| 50 | int error;
|
|---|
| 51 |
|
|---|
| 52 | /** End-of-file indicator. */
|
|---|
| 53 | int eof;
|
|---|
| 54 |
|
|---|
| 55 | /** KIO indicator */
|
|---|
| 56 | int kio;
|
|---|
| 57 |
|
|---|
| 58 | /** Session to the file provider */
|
|---|
| 59 | async_sess_t *sess;
|
|---|
| 60 |
|
|---|
| 61 | /**
|
|---|
| 62 | * Non-zero if the stream needs sync on fflush(). XXX change
|
|---|
| 63 | * console semantics so that sync is not needed.
|
|---|
| 64 | */
|
|---|
| 65 | int need_sync;
|
|---|
| 66 |
|
|---|
| 67 | /** Buffering type */
|
|---|
| 68 | enum _buffer_type btype;
|
|---|
| 69 |
|
|---|
| 70 | /** Buffer */
|
|---|
| 71 | uint8_t *buf;
|
|---|
| 72 |
|
|---|
| 73 | /** Buffer size */
|
|---|
| 74 | size_t buf_size;
|
|---|
| 75 |
|
|---|
| 76 | /** Buffer state */
|
|---|
| 77 | enum _buffer_state buf_state;
|
|---|
| 78 |
|
|---|
| 79 | /** Buffer I/O pointer */
|
|---|
| 80 | uint8_t *buf_head;
|
|---|
| 81 |
|
|---|
| 82 | /** Points to end of occupied space when in read mode. */
|
|---|
| 83 | uint8_t *buf_tail;
|
|---|
| 84 | };
|
|---|
| 85 |
|
|---|
| 86 | #endif
|
|---|
| 87 |
|
|---|
| 88 | /** @}
|
|---|
| 89 | */
|
|---|
