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In soshutdown(), use SHUT_{RD,WR,RDWR} instead of FREAD and FWRITE.

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Also, return EINVAL if `how' is invalid, as required by POSIX spec.
This commit is contained in:
Ruslan Ermilov 2001-02-27 13:48:07 +00:00
parent 4c0440cb86
commit 8ac6dca795
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=73153
2 changed files with 35 additions and 26 deletions
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53
lib/libc/sys/shutdown.2
View file

@ -32,9 +32,9 @@
.\" @(#)shutdown.2 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd June 4, 1993
.Dd February 27, 2001
.Dt SHUTDOWN 2
.Os BSD 4.2
.Os
.Sh NAME
.Nm shutdown
.Nd shut down part of a full-duplex connection
@ -49,37 +49,42 @@
The
.Fn shutdown
call causes all or part of a full-duplex connection on
the socket associated with
the socket associated with the file descriptor
.Fa s
to be shut down.
If
The
.Fa how
is
.No Dv SHUT_RD Pq 0 ,
argument specifies the type of shutdown.
Possible values are:
.Bl -tag -width SHUT_RDWR
.It Dv SHUT_RD
further receives will be disallowed.
If
.Fa how
is
.No Dv SHUT_WR Pq 1 ,
.It Dv SHUT_WR
further sends will be disallowed.
If
.Fa how
is
.No Dv SHUT_RDWR Pq 2 ,
.It Dv SHUT_RDWR
further sends and receives will be disallowed.
.El
.Sh RETURN VALUES
A 0 is returned if the call succeeds, -1 if it fails.
.Rv -std shutdown .
.Sh ERRORS
The call succeeds unless:
The
.Fn shutdown
call fails if:
.Bl -tag -width Er
.It Bq Er EBADF
.Fa S
is not a valid descriptor.
.It Bq Er ENOTSOCK
.Fa S
is a file, not a socket.
The
.Fa s
argument is not a valid file descriptor.
.It Bq Er EINVAL
The
.Fa how
argument is invalid.
.It Bq Er ENOTCONN
The specified socket is not connected.
The socket is not connected.
.It Bq Er ENOTSOCK
The
.Fa s
argument does not refer to a socket.
.El
.Sh SEE ALSO
.Xr connect 2 ,
@ -96,6 +101,8 @@ The
function call appeared in
.Bx 4.2 .
The
.Dv SHUT_
.Dv SHUT_RD , SHUT_WR ,
and
.Dv SHUT_RDWR
constants appeared in
.St -p1003.1g .

8
sys/kern/uipc_socket.c
View file

@ -958,10 +958,12 @@ soshutdown(so, how)
{
register struct protosw *pr = so->so_proto;
how++;
if (how & FREAD)
if (!(how == SHUT_RD || how == SHUT_WR || how == SHUT_RDWR))
return (EINVAL);
if (how != SHUT_WR)
sorflush(so);
if (how & FWRITE)
if (how != SHUT_RD)
return ((*pr->pr_usrreqs->pru_shutdown)(so));
return (0);
}