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/* Copyright (C) 2010-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Andreas Schwab <schwab@redhat.com>, 2010.
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 <sys/socket.h>
#include <sysdep.h>
#include <socketcall.h>
static int
recvmmsg_syscall (int fd, struct mmsghdr *vmessages, unsigned int vlen,
int flags, struct __timespec64 *timeout)
{
#ifndef __NR_recvmmsg_time64
# define __NR_recvmmsg_time64 __NR_recvmmsg
#endif
int r = SYSCALL_CANCEL (recvmmsg_time64, fd, vmessages, vlen, flags,
timeout);
#ifndef __ASSUME_TIME64_SYSCALLS
if (r >= 0 || errno != ENOSYS)
return r;
struct timespec ts32, *pts32 = NULL;
if (timeout != NULL)
{
if (! in_time_t_range (timeout->tv_sec))
{
__set_errno (EINVAL);
return -1;
}
ts32 = valid_timespec64_to_timespec (*timeout);
pts32 = &ts32;
}
# ifdef __ASSUME_RECVMMSG_SYSCALL
r = SYSCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags, pts32);
# else
r = SOCKETCALL_CANCEL (recvmmsg, fd, vmessages, vlen, flags, pts32);
# endif
if (r >= 0)
{
if (timeout != NULL)
*timeout = valid_timespec_to_timespec64 (ts32);
}
#endif
return r;
}
int
__recvmmsg64 (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags,
struct __timespec64 *timeout)
{
#if __TIMESIZE != 64
socklen_t csize[IOV_MAX];
if (vlen > IOV_MAX)
vlen = IOV_MAX;
for (int i = 0; i < vlen; i++)
csize[i] = vmessages[i].msg_hdr.msg_controllen;
#endif
int r = recvmmsg_syscall (fd, vmessages, vlen, flags, timeout);
#if __TIMESIZE != 64
if (r > 0)
{
for (int i=0; i < r; i++)
__convert_scm_timestamps (&vmessages[i].msg_hdr, csize[i]);
}
#endif
return r;
}
#if __TIMESIZE != 64
libc_hidden_def (__recvmmsg64)
int
__recvmmsg (int fd, struct mmsghdr *vmessages, unsigned int vlen, int flags,
struct timespec *timeout)
{
struct __timespec64 ts64, *pts64 = NULL;
if (timeout != NULL)
{
ts64 = valid_timespec_to_timespec64 (*timeout);
pts64 = &ts64;
}
int r = recvmmsg_syscall (fd, vmessages, vlen, flags, pts64);
if (r >= 0 && timeout != NULL)
/* The remanining timeout will be always less the input TIMEOUT. */
*timeout = valid_timespec64_to_timespec (ts64);
return r;
}
#endif
weak_alias (__recvmmsg, recvmmsg)
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