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1 /*
2  * Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without modification,
5  * are permitted provided that the following conditions are met:
6  *
7  * 1. Redistributions of source code must retain the above copyright notice, this list of
8  *    conditions and the following disclaimer.
9  *
10  * 2. Redistributions in binary form must reproduce the above copyright notice, this list
11  *    of conditions and the following disclaimer in the documentation and/or other materials
12  *    provided with the distribution.
13  *
14  * 3. Neither the name of the copyright holder nor the names of its contributors may be used
15  *    to endorse or promote products derived from this software without specific prior written
16  *    permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
22  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
27  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
28  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30 
31 #ifndef _PIPE_IMPL_H
32 #define _PIPE_IMPL_H
33 
34 #include <stdio.h>
35 #include <unistd.h>
36 #include "los_config.h"
37 #include "poll_impl.h"
38 
39 #ifdef __cplusplus
40 #if __cplusplus
41 extern "C" {
42 #endif /* __cplusplus */
43 #endif /* __cplusplus */
44 
45 #define PIPE_DEV_PATH   "/dev/pipe"
46 
47 UINT32 OsPipeInit(VOID);
48 INT32 PipeOpen(const CHAR *path, INT32 openFlag, INT32 minFd);
49 INT32 PipeClose(INT32 fd);
50 INT32 PipeRead(INT32 fd, VOID *buf, size_t len);
51 INT32 PipeWrite(INT32 fd, const VOID *buf, size_t len);
52 INT32 PipeUnlink(const CHAR *path);
53 INT32 PipePoll(INT32 fd, struct PollTable *table);
54 
55 #ifdef __cplusplus
56 #if __cplusplus
57 }
58 #endif /* __cplusplus */
59 #endif /* __cplusplus */
60 
61 #endif /* _PIPE_IMPL_H */
62