1/* Copyright (C) 1998-2018 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#ifndef _STROPTS_H
19#define _STROPTS_H 1
20
21#include <features.h>
22#include <bits/types.h>
23#include <bits/xtitypes.h>
24
25#ifndef __gid_t_defined
26typedef __gid_t gid_t;
27# define __gid_t_defined
28#endif
29
30#ifndef __uid_t_defined
31typedef __uid_t uid_t;
32# define __uid_t_defined
33#endif
34
35typedef __t_scalar_t t_scalar_t;
36typedef __t_uscalar_t t_uscalar_t;
37
38/* Get system specific constants. */
39#include <bits/stropts.h>
40
41
42__BEGIN_DECLS
43
44/* Test whether FILDES is associated with a STREAM-based file. */
45extern int isastream (int __fildes) __THROW;
46
47/* Receive next message from a STREAMS file.
48
49 This function is a cancellation point and therefore not marked with
50 __THROW. */
51extern int getmsg (int __fildes, struct strbuf *__restrict __ctlptr,
52 struct strbuf *__restrict __dataptr,
53 int *__restrict __flagsp);
54
55/* Receive next message from a STREAMS file, with *FLAGSP allowing to
56 control which message.
57
58 This function is a cancellation point and therefore not marked with
59 __THROW. */
60extern int getpmsg (int __fildes, struct strbuf *__restrict __ctlptr,
61 struct strbuf *__restrict __dataptr,
62 int *__restrict __bandp, int *__restrict __flagsp);
63
64/* Perform the I/O control operation specified by REQUEST on FD.
65 One argument may follow; its presence and type depend on REQUEST.
66 Return value depends on REQUEST. Usually -1 indicates error. */
67extern int ioctl (int __fd, unsigned long int __request, ...) __THROW;
68
69/* Send a message on a STREAM.
70
71 This function is a cancellation point and therefore not marked with
72 __THROW. */
73extern int putmsg (int __fildes, const struct strbuf *__ctlptr,
74 const struct strbuf *__dataptr, int __flags);
75
76/* Send a message on a STREAM to the BAND.
77
78 This function is a cancellation point and therefore not marked with
79 __THROW. */
80extern int putpmsg (int __fildes, const struct strbuf *__ctlptr,
81 const struct strbuf *__dataptr, int __band, int __flags);
82
83/* Attach a STREAMS-based file descriptor FILDES to a file PATH in the
84 file system name space. */
85extern int fattach (int __fildes, const char *__path) __THROW;
86
87/* Detach a name PATH from a STREAMS-based file descriptor. */
88extern int fdetach (const char *__path) __THROW;
89
90__END_DECLS
91
92#endif /* stropts.h */
93