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
|
/* ISC license. */
#include <skalibs/sysdeps.h>
#ifdef SKALIBS_HASSPLICE
#include <skalibs/nonposix.h>
#include <fcntl.h>
#include <errno.h>
#include <skalibs/iobuffer.h>
static int iobufferk_flush_0 (iobufferk *k)
{
while (k->n)
{
ssize_t r = splice(k->fd[0], 0, k->p[1], 0, k->n, 0) ;
if (r < 0) return 0 ;
else if (!r) break ;
k->n -= r ;
}
return 1 ;
}
static int fakeflush (iobufferk *k)
{
k->n = 0 ;
return 1 ;
}
static int iobufferk_flush_3 (iobufferk *k)
{
while (k->n)
{
ssize_t r = splice(k->p[0], 0, k->fd[1], 0, k->n, SPLICE_F_MORE | (k->nb & 2 ? SPLICE_F_NONBLOCK : 0)) ;
if (r < 0)
{
if (errno == EINVAL) errno = ENOSYS ;
return 0 ;
}
else if (!r) return (errno = EPIPE, 0) ;
k->n -= r ;
}
return 1 ;
}
iobufferk_output_func_t_ref const iobufferk_flush_f[4] =
{
&iobufferk_flush_0, &fakeflush, &fakeflush, &iobufferk_flush_3
} ;
#else
#include <errno.h>
#include <skalibs/iobuffer.h>
static int iobufferk_onosys (iobuffer_k *k)
{
(void)k ;
return (errno = ENOSYS, -1) ;
}
iobufferk_output_func_t_ref const iobufferk_flush_f[4] =
{
&iobufferk_onosys, &iobufferk_onosys, &iobufferk_onosys, &iobufferk_onosys
} ;
#endif
|
