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Fix markup.
Submitted by: ru MFC after: 2 days
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=167235
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@ -49,7 +49,7 @@ The
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.Fa how
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argument specifies the type of shutdown.
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Possible values are:
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.Bl -tag -width SHUT_RDWR
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.Bl -tag -width ".Dv SHUT_RDWR"
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.It Dv SHUT_RD
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Further receives will be disallowed.
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.It Dv SHUT_WR
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@ -60,7 +60,8 @@ to happen; see
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.Sx IMPLEMENTATION NOTES .
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.It Dv SHUT_RDWR
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Further sends and receives will be disallowed.
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Implies SHUT_WR.
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Implies
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.Dv SHUT_WR .
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.El
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.Pp
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If the file descriptor
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@ -70,42 +71,46 @@ is associated with a
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socket, all or part of the full-duplex connection will be shut down.
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.\"
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.Sh IMPLEMENTATION NOTES
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.Pp
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The following protocol specific actions apply to the use of
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.Dv SHUT_WR
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(and potentially also
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.Dv SHUT_RDWR ) ,
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based on the properties of the socket associated with the file descriptor
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.Fa s .
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.Bl -column ".Sy PF_INET6" ".Sy SOCK_STREAM" ".Sy IPPROTO_SCTP" \
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-width "xxxxxxxxxxxxxxxx"
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.It Li Sy Domain Ta Sy Type Ta Sy Protocol Ta Sy Return value and action
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.It Li PF_INET Ta SOCK_DGRAM Ta IPPROTO_SCTP Ta
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Return -1.
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.Bl -column ".Dv PF_INET6" ".Dv SOCK_STREAM" ".Dv IPPROTO_SCTP"
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.It Sy Domain Ta Sy Type Ta Sy Protocol Ta Sy Return value and action
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.It Dv PF_INET Ta Dv SOCK_DGRAM Ta Dv IPPROTO_SCTP Ta
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Return \-1.
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The global variable
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.Va errno
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will be set to
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.Er EOPNOTSUPP .
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.It Li PF_INET Ta SOCK_DGRAM Ta IPPROTO_UDP Ta
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.It Dv PF_INET Ta Dv SOCK_DGRAM Ta Dv IPPROTO_UDP Ta
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Return 0.
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ICMP messages will NOT be generated.
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.It Li PF_INET Ta SOCK_STREAM Ta IPPROTO_SCTP Ta
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ICMP messages will
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.Em not
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be generated.
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.It Dv PF_INET Ta Dv SOCK_STREAM Ta Dv IPPROTO_SCTP Ta
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Return 0.
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Send queued data and tear down association.
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.It Li PF_INET Ta SOCK_STREAM Ta IPPROTO_TCP Ta
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Return 0.
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.It Dv PF_INET Ta Dv SOCK_STREAM Ta Dv IPPROTO_TCP Ta
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Return 0. \
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Send queued data, wait for ACK, then send FIN.
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.It Li PF_INET6 Ta SOCK_DGRAM Ta IPPROTO_SCTP Ta
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Return -1.
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.It Dv PF_INET6 Ta Dv SOCK_DGRAM Ta Dv IPPROTO_SCTP Ta
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Return \-1.
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The global variable
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.Va errno
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will be set to
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.Er EOPNOTSUPP .
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.It Li PF_INET6 Ta SOCK_DGRAM Ta IPPROTO_UDP Ta
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.It Dv PF_INET6 Ta Dv SOCK_DGRAM Ta Dv IPPROTO_UDP Ta
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Return 0.
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ICMP messages will NOT be generated.
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.It Li PF_INET6 Ta SOCK_STREAM Ta IPPROTO_SCTP Ta
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ICMP messages will
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.Em not
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be generated.
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.It Dv PF_INET6 Ta Dv SOCK_STREAM Ta Dv IPPROTO_SCTP Ta
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Return 0.
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Send queued data and tear down association.
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.It Li PF_INET6 Ta SOCK_STREAM Ta IPPROTO_TCP Ta
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.It Dv PF_INET6 Ta Dv SOCK_STREAM Ta Dv IPPROTO_TCP Ta
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Return 0.
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Send queued data, wait for ACK, then send FIN.
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.El
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@ -131,7 +136,7 @@ The socket associated with the file descriptor
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does not support this operation.
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.It Bq Er ENOTCONN
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The
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.Da s
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.Fa s
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argument specifies a
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.Dv SOCK_STREAM
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socket which is not connected.
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@ -165,9 +170,18 @@ constants appeared in
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.Sh AUTHORS
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.An -nosplit
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This manual page was updated by
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.An Bruce M. Simpson Aq bms@FreeBSD.org .
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.An Bruce M. Simpson Aq bms@FreeBSD.org
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to reflect how
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.Fn shutdown
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behaves with
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.Dv PF_INET
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and
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.Dv PF_INET6
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sockets.
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.Sh BUGS
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The ICMP "port unreachable" message should be generated in response to
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The ICMP
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.Dq Li "port unreachable"
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message should be generated in response to
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datagrams received on a local port to which
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.Fa s
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is bound
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