mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-08 14:20:07 +00:00
49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/* Return whether socket supports 64-bit timestamps.
|
|
Copyright (C) 2022-2024 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
#include <sys/syscall.h>
|
|
#include <sys/socket.h>
|
|
#include <support/support.h>
|
|
#ifdef __linux__
|
|
# include <socket-constants-time64.h>
|
|
#endif
|
|
|
|
bool
|
|
support_socket_so_timestamp_time64 (int fd)
|
|
{
|
|
#ifdef __linux__
|
|
# if __LINUX_KERNEL_VERSION >= 0x050100 \
|
|
|| __WORDSIZE == 64 \
|
|
|| (defined __SYSCALL_WORDSIZE && __SYSCALL_WORDSIZE == 64)
|
|
return true;
|
|
# else
|
|
int level = SOL_SOCKET;
|
|
int optname = COMPAT_SO_TIMESTAMP_NEW;
|
|
int optval;
|
|
socklen_t len = sizeof (optval);
|
|
|
|
int r = syscall (__NR_getsockopt, fd, level, optname, &optval, &len);
|
|
return r != -1;
|
|
# endif
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|