blob: b6f2d79e590b78a0e08e6e766c2d0eba5bde6bf1 (
plain)
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
|
/* sigset.c - signal set manipulation functions */
/* Copyright 2002, Red Hat Inc. */
/* Note: these are currently grouped together in one file so that
it will override the default version in the libc/unix
directory which has grouped all functions in one file. */
/* sigaddset function */
#include <signal.h>
#include <bits/sigset.h>
#include <errno.h>
#include <string.h>
#include <machine/weakalias.h>
int
sigaddset (sigset_t *set, const int signo)
{
int index, mask;
__sigset_t *st = (__sigset_t *)set;
if (signo > NSIG)
{
errno = EINVAL;
return -1;
}
index = (signo - 1) / (8 * sizeof(long));
mask = 1 << ((signo - 1) % (8 * sizeof(long)));
st->__val[index] |= mask;
return 0;
}
/* sigdelset function */
int
sigdelset (sigset_t *set, const int signo)
{
int index, mask;
__sigset_t *st = (__sigset_t *)set;
if (signo > NSIG)
{
errno = EINVAL;
return -1;
}
index = (signo - 1) / (8 * sizeof(long));
mask = 1 << ((signo - 1) % (8 * sizeof(long)));
st->__val[index] &= ~mask;
return 0;
}
/* sigemptyset function */
int
sigemptyset (sigset_t *set)
{
int size = NSIG / 8;
__sigset_t *st = (__sigset_t *)set;
memset (st->__val, 0, size);
return 0;
}
/* sigfillset function */
int
sigfillset (sigset_t *set)
{
int size = NSIG / 8;
__sigset_t *st = (__sigset_t *)set;
memset (st->__val, 0xff, size);
return 0;
}
/* sigismember function */
int
sigismember (const sigset_t *set, int signo)
{
int index, mask;
__sigset_t *st = (__sigset_t *)set;
if (signo > NSIG)
{
errno = EINVAL;
return -1;
}
index = (signo - 1) / (8 * sizeof(long));
mask = 1 << ((signo - 1) % (8 * sizeof(long)));
return (st->__val[index] & mask) != 0;
}
|
