1/* Copyright (C) 2015-2023 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#include <sys/socket.h>
19#include <time.h>
20#include <sysdep.h>
21#include <socketcall.h>
22#include <socket-constants-time64.h>
23
24static int
25setsockopt_syscall (int fd, int level, int optname, const void *optval,
26 socklen_t len)
27{
28#ifdef __ASSUME_SETSOCKOPT_SYSCALL
29 return INLINE_SYSCALL_CALL (setsockopt, fd, level, optname, optval, len);
30#else
31 return SOCKETCALL (setsockopt, fd, level, optname, optval, len);
32#endif
33}
34
35#ifndef __ASSUME_TIME64_SYSCALLS
36static int
37setsockopt32 (int fd, int level, int optname, const void *optval,
38 socklen_t len)
39{
40 int r = -1;
41
42 if (level != SOL_SOCKET)
43 return r;
44
45 switch (optname)
46 {
47 case COMPAT_SO_RCVTIMEO_NEW:
48 case COMPAT_SO_SNDTIMEO_NEW:
49 {
50 if (len < sizeof (struct __timeval64))
51 {
52 __set_errno (EINVAL);
53 break;
54 }
55
56 struct __timeval64 *tv64 = (struct __timeval64 *) optval;
57 if (! in_int32_t_range (tv64->tv_sec))
58 {
59 __set_errno (EOVERFLOW);
60 break;
61 }
62
63 if (optname == COMPAT_SO_RCVTIMEO_NEW)
64 optname = COMPAT_SO_RCVTIMEO_OLD;
65 if (optname == COMPAT_SO_SNDTIMEO_NEW)
66 optname = COMPAT_SO_SNDTIMEO_OLD;
67
68 struct __timeval32 tv32 = valid_timeval64_to_timeval32 (*tv64);
69
70 r = setsockopt_syscall (fd, level, optname, &tv32, sizeof (tv32));
71 }
72 break;
73
74 case COMPAT_SO_TIMESTAMP_NEW:
75 case COMPAT_SO_TIMESTAMPNS_NEW:
76 {
77 if (optname == COMPAT_SO_TIMESTAMP_NEW)
78 optname = COMPAT_SO_TIMESTAMP_OLD;
79 if (optname == COMPAT_SO_TIMESTAMPNS_NEW)
80 optname = COMPAT_SO_TIMESTAMPNS_OLD;
81 /* The expected type for the option is an 'int' for both types of
82 timestamp formats, so there is no need to convert it. */
83 r = setsockopt_syscall (fd, level, optname, optval, len);
84 }
85 break;
86 }
87
88 return r;
89}
90#endif
91
92int
93__setsockopt (int fd, int level, int optname, const void *optval, socklen_t len)
94{
95 int r = setsockopt_syscall (fd, level, optname, optval, len);
96
97#ifndef __ASSUME_TIME64_SYSCALLS
98 if (r == -1 && errno == ENOPROTOOPT)
99 r = setsockopt32 (fd, level, optname, optval, len);
100#endif
101
102 return r;
103}
104libc_hidden_def (__setsockopt)
105weak_alias (__setsockopt, setsockopt)
106#if __TIMESIZE != 64
107weak_alias (__setsockopt, __setsockopt64)
108#endif
109