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55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013, 2014.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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sys/socket/recvfrom.cpp
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Receive a message from a socket.
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*******************************************************************************/
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#include <sys/socket.h>
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#include <string.h>
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extern "C"
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ssize_t recvfrom(int fd,
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void* restrict buffer,
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size_t buffer_size,
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int flags,
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struct sockaddr* restrict addr,
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socklen_t* restrict addrsize)
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{
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struct msghdr msghdr;
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memset(&msghdr, 0, sizeof(msghdr));
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struct iovec iovec;
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iovec.iov_base = buffer;
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iovec.iov_len = buffer_size;
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msghdr.msg_name = addr;
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msghdr.msg_namelen = addrsize ? *addrsize : 0;
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msghdr.msg_iov = &iovec;
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msghdr.msg_iovlen = 1;
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ssize_t result = recvmsg(fd, &msghdr, flags);
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if ( addrsize )
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*addrsize = msghdr.msg_namelen;
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return result;
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}
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