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<html><!-- This HTML file has been created by texi2html 1.29
from syscalls.texi on 4 June 1994 -->
<TITLE>Syscall specifications of Linux - accept</TITLE>
<P>Go to the <A HREF="syscalls_40.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_40.html">previous</A>, <A HREF="syscalls_42.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_42.html">next</A> section.<P>
<H2><A NAME="SEC41" HREF="syscalls_toc.html#SEC41" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_toc.html#SEC41">accept</A></H2>
<P>
<H3>SYNOPSIS</H3>
<P>
<CODE>int accept(int <VAR>s</VAR>, struct sockaddr *<VAR>addr</VAR>, int
*<VAR>addrlen</VAR>);</CODE>
<P>
<H3>PARAMETERS</H3>
<P>
<VAR>s</VAR>: [in] the socket connections are accepted from.
<P>
<VAR>addr</VAR>: [out] contains the address of the the buffer that will be
filled with the address of connecting entity.
<P>
<VAR>addrlen</VAR>: [out] on input contains the maximum length of addr in
bytes, on output contains the length of addr in bytes.
<P>
<H3>DESCRIPTION</H3>
<P>
If connections are pending on the socket <VAR>s</VAR>, the first connection
in the queue is dequeued and opened and a new socket with the same
properties of <VAR>s</VAR> is returned. If no connection is pending and the
socket is blocking, then the call blocks until a connection is requested
on <VAR>s</VAR>. Otherwise the call returns an error code. The socket <VAR>s</VAR>
remains open for future connections. The address of the connecting
entity is returned in <VAR>addr</VAR>. The format of the address depends on
the type of network on through which the socket communicates.
<CODE>accept</CODE> does not send a confirmation at the connecting entity.
<P>
<H3>RETURN VALUE</H3>
<P>
On success, the call returns a positive value that is the file
descriptor of the new socket. On errror, the call returns -1 and sets
<CODE>errno</CODE> to one of the following error values:
<P>
<UL>
<LI><CODE>EOPNOTSUPP</CODE>: The referenced socket is not of type
<CODE>SOCK_STREAM</CODE>.
<LI><CODE>EWOULDBLOCK</CODE>: The socket is marked non-blocking and no
connection is pending.
<LI><CODE>EBADF</CODE>, <CODE>ENOTSOCK</CODE> or <CODE>EFAULT</CODE>
</UL>
<P>
<P>Go to the <A HREF="syscalls_40.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_40.html">previous</A>, <A HREF="syscalls_42.html" tppabs="http://www.infran.ru/TechInfo/syscalls/syscalls_42.html">next</A> section.<P>