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
|
/* $Id: sigio.C,v 1.4 1999/11/08 22:46:39 dm Exp $ */
/*
*
* Copyright (C) 1998 David Mazieres (dm@uun.org)
*
* 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, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#include "amisc.h"
#ifdef HAVE_SYS_STROPTS_H
# define strbuf streams_strbuf
# include <sys/stropts.h>
# undef strbuf
#endif /* HAVE_SYS_STROPTS_H */
int
sigio_set (int fd)
{
int flag;
#if defined (O_ASYNC) && defined (F_SETOWN)
if (fcntl (fd, F_SETOWN, getpid ()) == -1) {
warn ("sigio_set: F_SETOWN: %m\n");
return -1;
}
flag = fcntl (fd, F_GETFL, 0);
if (flag == -1) {
warn ("sigio_set: F_GETFL: %m\n");
return -1;
}
flag |= O_ASYNC;
if (fcntl (fd, F_SETFL, flag) == -1) {
warn ("sigio_set: F_SETFL: %m\n");
return -1;
}
#elif defined (I_SETSIG)
flag = S_INPUT | S_OUTPUT;
if (ioctl (fd, I_SETSIG, flag) < 0) {
warn ("sigio_set: I_SETSIG: %m\n");
return -1;
}
#elif defined (SIOCSPGRP) && defined (FIOASYNC)
flag = getpgrp ();
if (ioctl (fd, SIOCSPGRP, &flag) < 0) {
warn ("sigio_set: SIOCSPGRG: %m\n");
return -1;
}
flag = 1;
if (ioctl (fd, FIOASYNC, &flag) < 0) {
warn ("sigio_set: FIOASYNC: %m\n");
return -1;
}
#else
# error "Don't know how to enable SIGIO on sockets"
#endif
return 0;
}
int
sigio_clear (int fd)
{
int flag;
#if defined (O_ASYNC) && defined (F_SETOWN)
flag = fcntl (fd, F_GETFL, 0);
if (flag == -1) {
warn ("sigio_clear: F_GETFL: %m\n");
return -1;
}
flag &= ~O_ASYNC;
if (fcntl (fd, F_SETFL, flag) == -1) {
warn ("sigio_clear: F_SETFL: %m\n");
return -1;
}
#elif defined (I_SETSIG)
flag = 0;
if (ioctl (fd, I_SETSIG, flag) < 0) {
warn ("sigio_clear: I_SETSIG: %m\n");
return -1;
}
#elif defined (SIOCSPGRP) && defined (FIOASYNC)
flag = 0;
if (ioctl (fd, FIOASYNC, &flag) < 0) {
warn ("sigio_clear: FIOASYNC: %m\n");
return -1;
}
#else
# error "Don't know how to enable SIGIO on sockets"
#endif
return 0;
}
|
