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45 lines
1.8 KiB
C++
45 lines
1.8 KiB
C++
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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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/accept4.cpp
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Accepts a connection from a listening socket.
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*******************************************************************************/
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#include <sys/socket.h>
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#include <sys/syscall.h>
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#include <stddef.h>
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DEFN_SYSCALL4(int, sys_accept4, SYSCALL_ACCEPT4, int, void*, size_t*, int);
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extern "C" int accept4(int fd, struct sockaddr* restrict addr,
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socklen_t* restrict addrlen, int flags)
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{
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// Deal with that the kernel doesn't need to understand socklen_t. Since
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// that type is designed to be size_t-sized anyway, the compiler should be
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// able to optimize all this type safety away, but this function will work
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// should the assumption sizeof(size_t) == sizeof(socklen_t) change.
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size_t addrlen_size_t;
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size_t* addrlen_size_t_ptr = addrlen ? &addrlen_size_t : NULL;
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int retfd = sys_accept4(fd, addr, addrlen_size_t_ptr, flags);
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if ( addrlen ) *addrlen = addrlen_size_t;
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return retfd;
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}
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