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
|
/* socket.c: Socket-related compatibility routines
Copyright (c) 2011-2012 Philip Kendall
$Id: socket.c 4828 2012-12-30 19:43:37Z pak21 $
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Author contact information:
E-mail: philip-fuse@shadowmagic.org.uk
*/
#include <config.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include "compat.h"
#include "fuse.h"
#include "ui/ui.h"
const compat_socket_t compat_socket_invalid = -1;
const int compat_socket_EBADF = EBADF;
struct compat_socket_selfpipe_t {
int read_fd;
int write_fd;
};
void
compat_socket_networking_init( void )
{
/* No action necessary */
}
void
compat_socket_networking_end( void )
{
/* No action necessary */
}
int
compat_socket_close( compat_socket_t fd )
{
return close( fd );
}
int compat_socket_get_error( void )
{
return errno;
}
const char *
compat_socket_get_strerror( void )
{
return strerror( errno );
}
compat_socket_selfpipe_t* compat_socket_selfpipe_alloc( void )
{
int error;
int pipefd[2];
compat_socket_selfpipe_t *self = malloc( sizeof( *self ) );
if( !self ) {
ui_error( UI_ERROR_ERROR, "%s: %d: out of memory", __FILE__, __LINE__ );
fuse_abort();
}
error = pipe( pipefd );
if( error ) {
ui_error( UI_ERROR_ERROR, "%s: %d: error %d creating pipe", __FILE__, __LINE__, error );
fuse_abort();
}
self->read_fd = pipefd[0];
self->write_fd = pipefd[1];
return self;
}
void compat_socket_selfpipe_free( compat_socket_selfpipe_t *self )
{
close( self->read_fd );
close( self->write_fd );
free( self );
}
compat_socket_t compat_socket_selfpipe_get_read_fd( compat_socket_selfpipe_t *self )
{
return self->read_fd;
}
void compat_socket_selfpipe_wake( compat_socket_selfpipe_t *self )
{
const char dummy = 0;
write( self->write_fd, &dummy, 1 );
}
void compat_socket_selfpipe_discard_data( compat_socket_selfpipe_t *self )
{
char bitbucket;
ssize_t bytes_read;
do {
bytes_read = read( self->read_fd, &bitbucket, 1 );
if( bytes_read == -1 && errno != EINTR ) {
ui_error( UI_ERROR_ERROR,
"%s: %d: unexpected error %d (%s) reading from pipe", __FILE__,
__LINE__, errno, strerror(errno) );
}
} while( bytes_read < 0 );
}
|
