1#include <sys/socket.h>
2#include <sys/time.h>
3#include <errno.h>
4#include "syscall.h"
5
6#define IS32BIT(x) !((x)+0x80000000ULL>>32)
7#define CLAMP(x) (int)(IS32BIT(x) ? (x) : 0x7fffffffU+((0ULL+(x))>>63))
8
9int setsockopt(int fd, int level, int optname, const void *optval, socklen_t optlen)
10{
11 const struct timeval *tv;
12 time_t s;
13 suseconds_t us;
14
15 int r = __socketcall(setsockopt, fd, level, optname, optval, optlen, 0);
16
17 if (r==-ENOPROTOOPT) switch (level) {
18 case SOL_SOCKET:
19 switch (optname) {
20 case SO_RCVTIMEO:
21 case SO_SNDTIMEO:
22 if (SO_RCVTIMEO == SO_RCVTIMEO_OLD) break;
23 if (optlen < sizeof *tv) return __syscall_ret(-EINVAL);
24 tv = optval;
25 s = tv->tv_sec;
26 us = tv->tv_usec;
27 if (!IS32BIT(s)) return __syscall_ret(-ENOTSUP);
28
29 if (optname==SO_RCVTIMEO) optname=SO_RCVTIMEO_OLD;
30 if (optname==SO_SNDTIMEO) optname=SO_SNDTIMEO_OLD;
31
32 r = __socketcall(setsockopt, fd, level, optname,
33 ((long[]){s, CLAMP(us)}), 2*sizeof(long), 0);
34 break;
35 case SO_TIMESTAMP:
36 case SO_TIMESTAMPNS:
37 if (SO_TIMESTAMP == SO_TIMESTAMP_OLD) break;
38 if (optname==SO_TIMESTAMP) optname=SO_TIMESTAMP_OLD;
39 if (optname==SO_TIMESTAMPNS) optname=SO_TIMESTAMPNS_OLD;
40 r = __socketcall(setsockopt, fd, level,
41 optname, optval, optlen, 0);
42 break;
43 }
44 }
45 return __syscall_ret(r);
46}