Add modified sources

MANIFEST

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+ File Name Archive # Description
+----------------------------------------------------------
+PACKNOTES 1
+README 1
+MANIFEST 1
+Makefile 4
+dialslip 1
+dialslip/Makefile 4
+dialslip/README.dialslip 4
+dialslip/dslipuser.c 4
+dialslip/mkslipuser.c 3
+dialslip/slip.c 3
+dialslip/slip.config 4
+dialslip/slip.h 3
+dialslip/slip.hosts 4
+driver 1
+driver/ID 1
+driver/ID/Master 2
+driver/ID/Node 4
+driver/ID/Space.c 2
+driver/ID/System 4
+driver/io 1
+driver/io/slip.c 1
+driver/io/slip.mk 4
+driver/sys 1
+driver/sys/slip.h 4
+driver/v2.ip.fix 1
+driver/v2.ip.fix/Driver.UU.01 2
+driver/v2.ip.fix/Driver.UU.02 1
+man 1
+man/man1 1
+man/man1/dslipuser.1 3
+man/man1/mkslipuser.1 3
+man/man1/slattach.1 3
+man/man1/sldetach.1 3
+man/man1/slhangupd.1 4
+man/man1/slip.1 3
+man/man7 1
+man/man7/slip.7 3
+utils 1
+utils/Makefile 4
+utils/slattach.c 3
+utils/sldetach 4
+utils/slhangupd.c 3

Makefile

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+#
+# Makefile file for SLIP
+#
+
+all:
+	cd driver/io; make -f slip.mk all install
+	cd utils; make all install
+	cd dialslip; make all install
+
+clean:
+	cd driver/io; make -f slip.mk clean
+	cd utils; make clean
+	cd dialslip; make clean

PACKNOTES

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+
+# "driver/v2.ip.fix//Driver.o.UU" was split into 2 parts; to create it, do
+ cat driver/v2.ip.fix//Driver.UU.0[1-9] >driver/v2.ip.fix//Driver.o.UU
+# Run uudecode to create "driver/v2.ip.fix//Driver.o":
+ uudecode driver/v2.ip.fix//Driver.o.UU

README

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+
+SLIP (Serial Link Internet Protocol)
+
+To build and install the slip driver, the slip utilities, and the slip login
+(dialslip) utilities, type the following command:
+
+ make
+
+
+SLIP DRIVER
+
+If you are using Unix System V Release 4.0.2 or below, you will need to copy
+v2.ip.fix/Driver.o to /etc/conf/pack.d/ip/Driver.o before you build the
+kernel. The ip driver of Unix System V R 4.0.2 has a bug for a point to point
+connection which panics the system. The v2.ip.fix/Driver.o fixes the problem.
+SLIP (Serial Link Internet Protocol)
+
+If you need to configure the second serial port, because your first serial
+port is used by other device, refer to Intel's Unix System V.4.0 Administra-
+tors Guide.
+
+Once the new ip driver and the slip have been installed, and your serial port
+has been set up, you can build the kernel using the idbuild command. Don't
+forget to reboot your system after the idbuild command completes succesfully
+for the new kernel to take into effect.
+
+
+SLIP UTILITIES
+
+slattach
+
+The slattach command links the slip streams driver to the serial port and links
+the ip driver to the slip driver.
+
+The syntax of slattach is as following:
+
+ slattach [-i] nodename interface_name
+OR slattach -d [-i] devname interface_name [ baudrate ]
+OR slattach - interface_name
+
+The first option uses the Basic Networking Utilities (Advanced System
+Administration Volume 1 Chapter 7-15). Once the administration files
+are set up, you can use the remote node name to attach slip directly
+or through your modem. Example:
+ slattach venus sl0
+
+The "-d" does not use BNU but directly open the next argument which is
+the serial device and link it to the slip driver. The baudrate sets up
+the line speed of the serial line; the default baudrate is 9600.
+
+To start the slip interface using the first serial port at 1200 baud
+execute the below command:
+
+ slattach -d /dev/tty00 sl0 1200
+
+If the slip hangup daemon (slhangupd) is run, slattach by default is set
+to receive hangup signal (SIGHUP) sent by the slip driver through slhangupd.
+The -i option ignores any hangup signal.
+
+
+ifconfig
+
+This utility is included in the standard base Unix System V Release 4.0
+product. Ifconfig is used to configure your system to the remote slip node.
+
+ ifconfig interface_name source destination up
+
+
+slhangupd
+
+Slhangup (slip hangup daemon) is a daemon used to receive messages sent by
+the slip driver. Whenever the slip driver receives a M_HANGUP message from
+a particular line, the driver sends sends the process id of the controlling
+slattach process to slhangupd. Slhangup then will send a SIGHUP (hangup
+signal) to the pid received from the slip driver.
+
+There is no restriction of the execution order of slattach and slhangupd.
+
+
+sldetach
+
+sldetach removes the serial line that is being used for slip connection.
+
+ sldetach interface_name
+
+
+DIALSLIP (slip login utilities)
+
+To install dialslip:
+
+1. Set up the /etc/slip.hosts file. This file maps login names to IP
+ addresses, which # comments, as usual.
+
+2. Set up the /etc/slip.config file. This file defines the IP address
+ of the local system on each interface. Set them all the same. There
+ can be as many simultaneous logins as lines in this file (not counting
+ comments).
+
+3. Run "mkslipuser". This builds a file similar in nature to utmp that
+ keeps track of who's logged in and what interface they're using.
+ This command should also be run at boot time to clean things up.
+
+4. Set up accounts for each system dialing in with "slip" as the shell
+ with its setuid bit set to root.
+

dialslip/Makefile

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+CC = cc
+CFLAGS = -O -DUSG -I/usr/ucbinclude
+LDFLAGS =
+LIBS = -L/usr/ucblib -lsocket -lnsl -lucb
+
+all: dslipuser mkslipuser slip
+
+dslipuser: dslipuser.o
+	$(CC) $(LDFLAGS) -o dslipuser dslipuser.o $(LIBS)
+
+mkslipuser: mkslipuser.o
+	$(CC) $(LDFLAGS) -o mkslipuser mkslipuser.o $(LIBS)
+
+slip: slip.o
+	$(CC) $(LDFLAGS) -o slip slip.o $(LIBS)
+
+clean:
+	rm -f *.o mkslipuser dslipuser slip
+
+install:
+	cp dslipuser mkslipuser slip /usr/sbin
+	chmod 4755 /usr/sbin/slip

dialslip/README.dialslip

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+
+src/new/slip.h
+ edit to customize path names and line discipline
+
+src/new/slip.config
+src/new/slip.hosts
+ move to location specified in slip.h
+
+src/new/dslipuser.c
+ cc -O -o dslipuser dslipuser.c
+
+src/new/mkslipuser.c
+ cc -O -o mkslipuser mkslipuser.c
+
+src/new/slip.c
+ cc -O -o slip slip.c
+
+Modifications:
+01/31/91 Alan Batie
+ - Ported slip.c dslipuser.c mkslipuser.c for Unix System V/386
+ Release V.4.
+
+02/08/91 Sudji Husodo
+ - modified to log slip activities to /var/slip/slip.log if the file exists.
+ - changed the call to "system" to fork and exec, so we don't have to setuid
+ slattach and ifconfig to root.
+

dialslip/dslipuser.c

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+/*
+ * dslipuser.c
+ *
+ * Displays information on all of the users currently attached to the network.
+ *
+ * Copyright 1987 by University of California, Davis
+ *
+ * Greg Whitehead 10-1-87
+ * Computing Services
+ * University of California, Davis
+ *
+ * Revised: Geoff Arnold
+ * Sun Microsystems Inc.
+ * 10-28-87
+ */
+
+#include <stdio.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <net/if.h>
+#include <netdb.h>
+#include <pwd.h>
+#include "slip.h"
+
+#ifdef USG
+# include <sys/fcntl.h>
+#endif
+
+main(argc,argv)
+int argc;
+char **argv;
+{
+ int ufd;
+ struct sl_urec urec;
+ int free;
+ struct passwd *upass;
+ struct hostent *hh;
+ int n = 0;
+ int f = 0;
+
+ /*
+ * Open USER_FL.
+ *
+ */
+ if ((ufd=open(USER_FL,O_RDONLY))<0) {
+ perror(USER_FL);
+ exit(1);
+ }
+
+
+ /*
+ * Display USER_FL.
+ *
+ */
+ while (read(ufd,&urec,sizeof(urec))==sizeof(urec)) {
+ if (urec.sl_uid >=0) {
+ n++;
+ upass=getpwuid(urec.sl_uid);
+ hh = gethostbyaddr(&urec.sl_haddr, 4, AF_INET);
+ printf("User %s connected as %s (%s) via %s%d\n",
+ upass->pw_name, hh->h_name, inet_ntoa(urec.sl_haddr),
+ IF_NAME,urec.sl_unit);
+ }
+ else
+ f++;
+ }
+
+ if (n == 0)
+ printf("No dialup SLIP users connected.\n");
+
+ printf("(%d free line%s)\n",f,(f==1)?"":"s");
+
+ close(ufd);
+}