xnu-3248.20.55.tar.gz

[apple/xnu.git] / bsd / man / man2 / accept.2

diff --git a/bsd/man/man2/accept.2 b/bsd/man/man2/accept.2
index 3b5ec370f0290d9a9082f9b948aa15944c34ca2c..63f1838128fa984e8f150be4bd55fe0ed29e05d3 100644 (file)
--- a/bsd/man/man2/accept.2
+++ b/bsd/man/man2/accept.2
@@ -33,33 +33,34 @@
 .\"
 .\"     @(#)accept.2   8.2 (Berkeley) 12/11/93
 .\"
 .\"
 .\"     @(#)accept.2   8.2 (Berkeley) 12/11/93
 .\"

-.Dd December 11, 1993
+.Dd March 18, 2015

 .Dt ACCEPT 2
 .Os BSD 4.2
 .Sh NAME
 .Nm accept
 .Nd accept a connection on a socket
 .Sh SYNOPSIS
 .Dt ACCEPT 2
 .Os BSD 4.2
 .Sh NAME
 .Nm accept
 .Nd accept a connection on a socket
 .Sh SYNOPSIS

-.Fd #include <sys/types.h>

 .Fd #include <sys/socket.h>
 .Ft int
 .Fd #include <sys/socket.h>
 .Ft int

-.Fn accept "int s" "struct sockaddr *addr" "socklen_t *addrlen"
+.Fo accept
+.Fa "int socket"
+.Fa "struct sockaddr *restrict address"
+.Fa "socklen_t *restrict address_len"
+.Fc

 .Sh DESCRIPTION
 The argument
 .Sh DESCRIPTION
 The argument

-.Fa s
+.Fa socket

 is a socket that has been created with
 .Xr socket 2 ,
 bound to an address with
 .Xr bind 2 ,
 and is listening for connections after a
 .Xr listen 2 .
 is a socket that has been created with
 .Xr socket 2 ,
 bound to an address with
 .Xr bind 2 ,
 and is listening for connections after a
 .Xr listen 2 .

-The

 .Fn accept
 .Fn accept

-argument

 extracts the first connection request
 on the queue of pending connections, creates
 a new socket with the same properties of 
 extracts the first connection request
 on the queue of pending connections, creates
 a new socket with the same properties of 

-.Fa s
+.Fa socket ,

 and allocates a new file descriptor
 for the socket.  If no pending connections are
 present on the queue, and the socket is not marked
 and allocates a new file descriptor
 for the socket.  If no pending connections are
 present on the queue, and the socket is not marked


@@ -73,23 +74,23 @@ returns an error as described below.
 The accepted socket
 may not be used
 to accept more connections.  The original socket
 The accepted socket
 may not be used
 to accept more connections.  The original socket

-.Fa s
+.Fa socket,

 remains open.
 .Pp
 The argument
 remains open.
 .Pp
 The argument

-.Fa addr
+.Fa address

 is a result parameter that is filled in with
 the address of the connecting entity,
 as known to the communications layer.
 The exact format of the
 is a result parameter that is filled in with
 the address of the connecting entity,
 as known to the communications layer.
 The exact format of the

-.Fa addr
+.Fa address

 parameter is determined by the domain in which the communication
 is occurring.
 The 
 parameter is determined by the domain in which the communication
 is occurring.
 The 

-.Fa addrlen
+.Fa address_len

 is a value-result parameter; it should initially contain the
 amount of space pointed to by
 is a value-result parameter; it should initially contain the
 amount of space pointed to by

-.Fa addr ;
+.Fa address ;

 on return it will contain the actual length (in bytes) of the
 address returned.
 This call
 on return it will contain the actual length (in bytes) of the
 address returned.
 This call


@@ -132,39 +133,79 @@ call with providing only the control information,
 or by calling
 .Xr setsockopt 2 .
 .Sh RETURN VALUES
 or by calling
 .Xr setsockopt 2 .
 .Sh RETURN VALUES

-The call returns \-1 on error.  If it succeeds, it returns a non-negative
-integer that is a descriptor for the accepted socket.
+The call returns \-1 on error and the global variable
+.Va errno
+is set to indicate the error.
+If it succeeds, it returns a non-negative integer
+that is a descriptor for the accepted socket.

 .Sh ERRORS
 The
 .Fn accept
 .Sh ERRORS
 The
 .Fn accept

-will fail if:
+system call will fail if:

 .Bl -tag -width Er
 .Bl -tag -width Er

+.\" ==========

 .It Bq Er EBADF
 .It Bq Er EBADF

-The descriptor is invalid.
-.It Bq Er ENOTSOCK
-The descriptor references a file, not a socket.
-.It Bq Er EOPNOTSUPP
-The referenced socket is not of type
-.Dv SOCK_STREAM . 
+.Fa socket
+is not a valid file descriptor.
+.\" ==========
+.It Bq Er ECONNABORTED
+The connection to
+.Fa socket
+has been aborted.
+.\" ==========

 .It Bq Er EFAULT
 The
 .It Bq Er EFAULT
 The

-.Fa addr
+.Fa address

 parameter is not in a writable part of the
 user address space.
 parameter is not in a writable part of the
 user address space.

-.It Bq Er EWOULDBLOCK
-The socket is marked non-blocking and no connections
-are present to be accepted.
+.\" ==========
+.It Bq Er EINTR
+The
+.Fn accept
+system call was terminated by a signal.
+.\" ==========
+.It Bq Er EINVAL
+.Fa socket
+is unwilling to accept connections.
+.\" ==========

 .It Bq Er EMFILE
 The per-process descriptor table is full.
 .It Bq Er EMFILE
 The per-process descriptor table is full.

+.\" ==========

 .It Bq Er ENFILE
 The system file table is full.
 .It Bq Er ENFILE
 The system file table is full.

+.\" ==========
+.It Bq Er ENOMEM
+Insufficient memory was available to complete the operation.
+.\" ==========
+.It Bq Er ENOTSOCK
+.Fa socket
+references a file type other than a socket.
+.\" ==========
+.It Bq Er EOPNOTSUPP
+.Fa socket
+is not of type
+.Dv SOCK_STREAM
+and thus does not accept connections. 
+.\" ==========
+.It Bq Er EWOULDBLOCK
+.Fa socket
+is marked as non-blocking and no connections are present to be accepted.

 .El
 .El

+.Sh LEGACY SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <sys/socket.h>
+.Pp
+The include file
+.In sys/types.h
+is necessary.

 .Sh SEE ALSO
 .Xr bind 2 ,
 .Xr connect 2 ,
 .Sh SEE ALSO
 .Xr bind 2 ,
 .Xr connect 2 ,

+.Xr connectx 2 ,

 .Xr listen 2 ,
 .Xr select 2 ,
 .Xr listen 2 ,
 .Xr select 2 ,

-.Xr socket 2
+.Xr socket 2 ,
+.Xr compat 5

 .Sh HISTORY
 The
 .Fn accept
 .Sh HISTORY
 The
 .Fn accept