#!/bin/rc
#
# command: /bin/boddle /n/dump/1999/0103/sys/src/cmd/ip/arpd.c arpd.c
# srcdir: /n/dump/1999/0103/sys/src/cmd/ip
# version: 917090536
# date: Sat Jan 23 11:22:16 GMT 1999
#
myname=$0
doextract=no

fn usage{
	echo $myname: usage: $myname '[-X] [src-directory]' >[1=2]
	exit usage
}

fn sigint{
	rm -rf 917090536
	exit interrupt
}

while(~ $1 -*){
	switch($1){
	case -X
		doextract=yes
	case -*
		usage
	}
	shift
}

switch($#*){
case 0
	srcdir=/n/dump/1999/0103/sys/src/cmd/ip
case 1
	srcdir=$1
case *
	usage
}

if(! ~ $doextract yes){
	echo This shell file contains a bundle of diffs representing changes
	echo to original source files in the Plan 9 distribution. It will run
	echo against the files in
	echo ' ' $srcdir
	echo '(unless overridden by the optional source directory argument)'
	echo and create a directory 917090536 containing the updated files.
	echo It will NOT automatically update the original files.
	echo
	echo Invoke with argument -X to perform the actual extraction.
	exit 0
}

rm -rf 917090536
mkdir 917090536

target=917090536/arpd.c
echo -n '917090536/arpd.c: '
if(! test -f $srcdir/arpd.c || ! test -r $srcdir/arpd.c){
	echo $srcdir/arpd.c unreadable
	exit unreadable
}
sum=`{sum < $srcdir/arpd.c}
if(! ~ 9fa2e5675731  $sum(1)^$sum(2)){
	echo $srcdir/arpd.c is not the original distribution file
	exit original
}
cp $srcdir/arpd.c 917090536/arpd.c
ed 917090536/arpd.c >/dev/null >[2=1] <<'//GO.SYSIN DD VADIM arpd.c'
266a
}

Pend *
freepkt(Pend *p)
{
	Pend *n;

	n = p->next;
	free(p->data);
	free(p);
	return n;
.
263a
		else if(t >= f->expire)
			*l = freepkt(f);
.
261,262c
			*l = freepkt(f);
.
259d
254a
	t = time(0);
.
253a
	long t;
.
250c
ippending(uchar *ip)
.
244c
		ippending(entry.ipaddr);
.
161a
	p->expire = t + Lifetime;
	p->data = malloc(pktlen);
	if(p->data == 0) {
		free(p);
		return;
	}
.
159a
	if(p == 0)
		return;
.
158a
	t = time(0);
	for(l = &phead; (f = *l) != 0 && t >= f->expire;)
		*l = freepkt(f);
.
136a
	long t;
.
135c
	Pend *p, **l, *f;
.
37c
void	ippending(uchar*);
Pend	*freepkt(Pend*);
.
31a
enum {
	Lifetime = 10,	/* seconds before expiry */
};

.
29c
	char	*data;
.
27a
	long	expire;
.
wq
//GO.SYSIN DD VADIM arpd.c
sum=`{sum < 917090536/arpd.c}
if(~ 295c9a9c6121  $sum(1)^$sum(2))
	echo
if not{
	echo 917090536/arpd.c checksum error creating updated file
	exit checksum
}