Added a -D option to turn on TCP_NODELAY.
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=41445
@ -30,7 +30,7 @@
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)rshd.8 8.1 (Berkeley) 6/4/93
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.\" $Id: rshd.8,v 1.10 1997/12/02 12:29:56 charnier Exp $
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.\" $Id: rshd.8,v 1.11 1997/12/18 07:39:27 charnier Exp $
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.\"
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.Dd June 4, 1993
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.Dt RSHD 8
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@ -40,7 +40,7 @@
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.Nd remote shell server
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.Sh SYNOPSIS
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.Nm rshd
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.Op Fl alnL
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.Op Fl alnDL
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.Sh DESCRIPTION
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The
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.Nm
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@ -164,6 +164,11 @@ The use of keepalive messages allows sessions to be timed out
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if the client crashes or becomes unreachable.
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.Pp
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The
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.Fl D
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option sets the TCP_NODELAY socket option which improves performance of small back-to-back
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writes at the expense of additional network traffic.
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.Pp
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The
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.Fl L
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option causes all successful accesses to be logged to
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.Xr syslogd 8
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@ -42,7 +42,7 @@ static const char copyright[] =
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static const char sccsid[] = "@(#)rshd.c 8.2 (Berkeley) 4/6/94";
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#endif
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static const char rcsid[] =
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"$Id: rshd.c,v 1.20 1997/12/02 12:30:04 charnier Exp $";
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"$Id: rshd.c,v 1.21 1998/05/05 00:28:51 rnordier Exp $";
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#endif /* not lint */
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/*
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@ -61,6 +61,7 @@ static const char rcsid[] =
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#include <netinet/in_systm.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/tcp.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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@ -82,6 +83,7 @@ int keepalive = 1;
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int check_all;
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int log_success; /* If TRUE, log all successful accesses */
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int sent_null;
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int no_delay;
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void doit __P((struct sockaddr_in *));
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void error __P((const char *, ...));
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@ -95,13 +97,13 @@ void usage __P((void));
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#include <krb.h>
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#define VERSION_SIZE 9
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#define SECURE_MESSAGE "This rsh session is using DES encryption for all transmissions.\r\n"
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#define OPTIONS "alnkvxL"
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#define OPTIONS "alnkvxDL"
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char authbuf[sizeof(AUTH_DAT)];
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char tickbuf[sizeof(KTEXT_ST)];
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int doencrypt, use_kerberos, vacuous;
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Key_schedule schedule;
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#else
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#define OPTIONS "alnL"
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#define OPTIONS "alnDL"
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#endif
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int
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@ -143,6 +145,9 @@ main(argc, argv)
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break;
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#endif
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#endif
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case 'D':
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no_delay = 1;
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break;
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case 'L':
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log_success = 1;
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break;
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@ -182,6 +187,9 @@ main(argc, argv)
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if (setsockopt(0, SOL_SOCKET, SO_LINGER, (char *)&linger,
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sizeof (linger)) < 0)
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syslog(LOG_WARNING, "setsockopt (SO_LINGER): %m");
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if (no_delay &&
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setsockopt(0, IPPROTO_TCP, TCP_NODELAY, &on, sizeof(on)) < 0)
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syslog(LOG_WARNING, "setsockopt (TCP_NODELAY): %m");
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doit(&from);
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/* NOTREACHED */
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return(0);
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