1#include <sys/socket.h>
 2#include <sys/time.h>
 3#include <errno.h>
 4#include "syscall.h"
 5
 6int getsockopt(int fd, int level, int optname, void *restrict optval, socklen_t *restrict optlen)
 7{
 8	long tv32[2];
 9	struct timeval *tv;
10
11	int r = __socketcall(getsockopt, fd, level, optname, optval, optlen, 0);
12
13	if (r==-ENOPROTOOPT) switch (level) {
14	case SOL_SOCKET:
15		switch (optname) {
16		case SO_RCVTIMEO:
17		case SO_SNDTIMEO:
18			if (SO_RCVTIMEO == SO_RCVTIMEO_OLD) break;
19			if (*optlen < sizeof *tv) return __syscall_ret(-EINVAL);
20			if (optname==SO_RCVTIMEO) optname=SO_RCVTIMEO_OLD;
21			if (optname==SO_SNDTIMEO) optname=SO_SNDTIMEO_OLD;
22			r = __socketcall(getsockopt, fd, level, optname,
23				tv32, (socklen_t[]){sizeof tv32}, 0);
24			if (r<0) break;
25			tv = optval;
26			tv->tv_sec = tv32[0];
27			tv->tv_usec = tv32[1];
28			*optlen = sizeof *tv;
29			break;
30		case SO_TIMESTAMP:
31		case SO_TIMESTAMPNS:
32			if (SO_TIMESTAMP == SO_TIMESTAMP_OLD) break;
33			if (optname==SO_TIMESTAMP) optname=SO_TIMESTAMP_OLD;
34			if (optname==SO_TIMESTAMPNS) optname=SO_TIMESTAMPNS_OLD;
35			r = __socketcall(getsockopt, fd, level,
36				optname, optval, optlen, 0);
37			break;
38		}
39	}
40	return __syscall_ret(r);
41}