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
|
/* ISC license. */
#include <skalibs/sysdeps.h>
#include <skalibs/nonposix.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
#include <stdint.h>
#include <errno.h>
#include <skalibs/uint16.h>
#include <skalibs/djbunix.h>
#include <skalibs/ip46.h>
#include <skalibs/socket.h>
#ifdef SKALIBS_IPV6_ENABLED
int socket_accept6_internal (int s, char *ip6, uint16_t *port, unsigned int options)
{
struct sockaddr_in6 sa ;
socklen_t dummy = sizeof sa ;
int fd ;
do
#ifdef SKALIBS_HASACCEPT4
fd = accept4(s, (struct sockaddr *)&sa, &dummy, ((options & DJBUNIX_FLAG_NB) ? SOCK_NONBLOCK : 0) | ((options & DJBUNIX_FLAG_COE) ? SOCK_CLOEXEC : 0)) ;
#else
fd = accept(s, (struct sockaddr *)&sa, &dummy) ;
#endif
while ((fd < 0) && (errno == EINTR)) ;
if (fd < 0) return -1 ;
#ifndef SKALIBS_HASACCEPT4
if ((((options & DJBUNIX_FLAG_NB) ? ndelay_on(fd) : ndelay_off(fd)) < 0)
|| (((options & DJBUNIX_FLAG_COE) ? coe(fd) : uncoe(fd)) < 0))
{
int e = errno ;
fd_close(fd) ;
errno = e ;
return -1 ;
}
#endif
memcpy(ip6, sa.sin6_addr.s6_addr, 16) ;
uint16_unpack_big((char *)&sa.sin6_port, port) ;
return fd ;
}
#else
int socket_accept6_internal (int s, char *ip6, uint16_t *port, unsigned int options)
{
(void)s ;
(void)ip6 ;
(void)port ;
(void)options ;
return (errno = ENOSYS, -1) ;
}
#endif
|
