1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/* Unix pipe-to-self. This is a utility module for tests, not a test.
*
* Copyright © 2008-2010 Red Hat, Inc.
* Copyright © 2011 Nokia Corporation
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Simon McVittie <simon.mcvittie@collabora.co.uk>
*/
#include <errno.h>
#include <unistd.h>
#include <gio/gio.h>
#include "test-io-stream.h"
#include "test-pipe-unix.h"
#ifdef G_OS_UNIX
# include <gio/gunixinputstream.h>
# include <gio/gunixoutputstream.h>
#else
# error This module only exists on Unix
#endif
/**
* test_pipe:
* @is: (out) (optional): used to return a #GInputStream
* @os: (out) (optional): used to return a #GOutputStream
* @error: used to raise an error
*
* Return a "pipe to self" connecting @is to @os. This can be used
* as a unidirectional pipe to or from a child process, for instance.
*
* See test_bidi_pipe() if you want to emulate a bidirectional pipe
* via a pair of unidirectional pipes.
*
* Returns: %TRUE on success
*/
gboolean
test_pipe (GInputStream **is,
GOutputStream **os,
GError **error)
{
int pipefd[2];
int ret;
ret = pipe (pipefd);
if (ret != 0)
{
int e = errno;
g_set_error (error, G_IO_ERROR, g_io_error_from_errno (e),
"%s", g_strerror (e));
return FALSE;
}
if (is != NULL)
*is = g_unix_input_stream_new (pipefd[0], TRUE);
else
close (pipefd[0]);
if (os != NULL)
*os = g_unix_output_stream_new (pipefd[1], TRUE);
else
close (pipefd[1]);
return TRUE;
}
/**
* test_bidi_pipe:
* @left: (out) (optional): used to return one #GIOStream
* @right: (out) (optional): used to return the other #GIOStream
* @error: used to raise an error
*
* Return two #GIOStreams connected to each other with pipes.
* The "left" input stream is connected by a unidirectional pipe
* to the "right" output stream, and vice versa. This can be used
* as a bidirectional pipe to a child process, for instance.
*
* See test_pipe() if you only need a one-way pipe.
*
* Returns: %TRUE on success
*/
gboolean
test_bidi_pipe (GIOStream **left,
GIOStream **right,
GError **error)
{
GInputStream *left_in = NULL;
GOutputStream *left_out = NULL;
GInputStream *right_in = NULL;
GOutputStream *right_out = NULL;
gboolean ret = FALSE;
if (!test_pipe (&left_in, &right_out, error))
goto out;
if (!test_pipe (&right_in, &left_out, error))
goto out;
if (left != NULL)
*left = test_io_stream_new (left_in, left_out);
if (right != NULL)
*right = test_io_stream_new (right_in, right_out);
ret = TRUE;
out:
g_clear_object (&left_in);
g_clear_object (&left_out);
g_clear_object (&right_in);
g_clear_object (&right_out);
return ret;
}
|
