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/* Linux recvmsg syscall wrapper.
Copyright (C) 2016-2023 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 <sys/socket.h>
#include <sysdep-cancel.h>
#include <socketcall.h>
static int
__recvmsg_syscall (int fd, struct msghdr *msg, int flags)
{
#ifdef __ASSUME_RECVMSG_SYSCALL
return SYSCALL_CANCEL (recvmsg, fd, msg, flags);
#else
return SOCKETCALL_CANCEL (recvmsg, fd, msg, flags);
#endif
}
ssize_t
__libc_recvmsg64 (int fd, struct msghdr *msg, int flags)
{
ssize_t r;
#if __TIMESIZE != 64
socklen_t orig_controllen = msg != NULL ? msg->msg_controllen : 0;
#endif
r = __recvmsg_syscall (fd, msg, flags);
#if __TIMESIZE != 64
if (r >= 0 && orig_controllen != 0)
__convert_scm_timestamps (msg, orig_controllen);
#endif
return r;
}
#if __TIMESIZE != 64
weak_alias (__libc_recvmsg64, __recvmsg64)
ssize_t
__libc_recvmsg (int fd, struct msghdr *msg, int flags)
{
return __recvmsg_syscall (fd, msg, flags);
}
#endif
weak_alias (__libc_recvmsg, recvmsg)
weak_alias (__libc_recvmsg, __recvmsg)
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