From e75b4727c340fac7bad10fba868b98b756b4a4b6 Mon Sep 17 00:00:00 2001
From: deraadt <deraadt@openbsd.org>
Date: Fri, 10 May 1996 13:02:34 +0000
Subject: [PATCH] if_name/if_unit -> if_xname/if_softc network list is a TAILQ

---
 usr.bin/netstat/if.c      | 54 ++++++++++++++++++++++++---------------
 usr.bin/netstat/main.c    | 43 ++++++++++++-------------------
 usr.bin/netstat/mbuf.c    | 10 +++++---
 usr.bin/netstat/netstat.h |  5 ++--
 usr.bin/netstat/route.c   |  8 +++---
 5 files changed, 61 insertions(+), 59 deletions(-)

diff --git a/usr.bin/netstat/if.c b/usr.bin/netstat/if.c
index 2515973bc6e..11884bd1eb8 100644
--- a/usr.bin/netstat/if.c
+++ b/usr.bin/netstat/if.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: if.c,v 1.14 1995/10/17 07:17:04 jtc Exp $	*/
+/*	$NetBSD: if.c,v 1.16 1996/05/07 05:30:45 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1983, 1988, 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "from: @(#)if.c	8.2 (Berkeley) 2/21/94";
 #else
-static char *rcsid = "$NetBSD: if.c,v 1.14 1995/10/17 07:17:04 jtc Exp $";
+static char *rcsid = "$NetBSD: if.c,v 1.16 1996/05/07 05:30:45 thorpej Exp $";
 #endif
 #endif /* not lint */
 
@@ -70,6 +70,8 @@ static void catchalarm __P((int));
 
 /*
  * Print a description of the network interfaces.
+ * NOTE: ifnetaddr is the location of the kernel global "ifnet",
+ * which is a TAILQ_HEAD.
  */
 void
 intpr(interval, ifnetaddr)
@@ -85,7 +87,8 @@ intpr(interval, ifnetaddr)
 	} ifaddr;
 	u_long ifaddraddr;
 	struct sockaddr *sa;
-	char name[16];
+	struct ifnet_head ifhead;	/* TAILQ_HEAD */
+	char name[IFNAMSIZ];
 
 	if (ifnetaddr == 0) {
 		printf("ifnet: symbol not defined\n");
@@ -95,8 +98,16 @@ intpr(interval, ifnetaddr)
 		sidewaysintpr((unsigned)interval, ifnetaddr);
 		return;
 	}
-	if (kread(ifnetaddr, (char *)&ifnetaddr, sizeof ifnetaddr))
+
+	/*
+	 * Find the pointer to the first ifnet structure.  Replace
+	 * the pointer to the TAILQ_HEAD with the actual pointer
+	 * to the first list element.
+	 */
+	if (kread(ifnetaddr, (char *)&ifhead, sizeof ifhead))
 		return;
+	ifnetaddr = (u_long)ifhead.tqh_first;
+
 	printf("%-5.5s %-5.5s %-11.11s %-17.17s %8.8s %5.5s %8.8s %5.5s",
 		"Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs",
 		"Opkts", "Oerrs");
@@ -113,16 +124,14 @@ intpr(interval, ifnetaddr)
 		int n, m;
 
 		if (ifaddraddr == 0) {
-			if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) ||
-			    kread((u_long)ifnet.if_name, name, 16))
+			if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet))
 				return;
-			name[15] = '\0';
+			bcopy(ifnet.if_xname, name, IFNAMSIZ);
+			name[IFNAMSIZ - 1] = '\0';	/* sanity */
 			ifnetaddr = (u_long)ifnet.if_list.tqe_next;
-			if (interface != 0 && (strcmp(name, interface) != 0 ||
-			    unit != ifnet.if_unit))
+			if (interface != 0 && strcmp(name, interface) != 0)
 				continue;
 			cp = index(name, '\0');
-			cp += sprintf(cp, "%d", ifnet.if_unit);
 			if ((ifnet.if_flags & IFF_UP) == 0)
 				*cp++ = '*';
 			*cp = '\0';
@@ -232,7 +241,7 @@ intpr(interval, ifnetaddr)
 
 #define	MAXIF	10
 struct	iftot {
-	char	ift_name[16];		/* interface name */
+	char	ift_name[IFNAMSIZ];	/* interface name */
 	int	ift_ip;			/* input packets */
 	int	ift_ie;			/* input errors */
 	int	ift_op;			/* output packets */
@@ -259,28 +268,31 @@ sidewaysintpr(interval, off)
 	register struct iftot *ip, *total;
 	register int line;
 	struct iftot *lastif, *sum, *interesting;
+	struct ifnet_head ifhead;	/* TAILQ_HEAD */
 	int oldmask;
 
-	if (kread(off, (char *)&firstifnet, sizeof (u_long)))
+	/*
+	 * Find the pointer to the first ifnet structure.  Replace
+	 * the pointer to the TAILQ_HEAD with the actual pointer
+	 * to the first list element.
+	 */
+	if (kread(off, (char *)&ifhead, sizeof ifhead))
 		return;
+	firstifnet = (u_long)ifhead.tqh_first;
+
 	lastif = iftot;
 	sum = iftot + MAXIF - 1;
 	total = sum - 1;
 	interesting = iftot;
 	for (off = firstifnet, ip = iftot; off;) {
-		char *cp;
-
 		if (kread(off, (char *)&ifnet, sizeof ifnet))
 			break;
 		ip->ift_name[0] = '(';
-		if (kread((u_long)ifnet.if_name, ip->ift_name + 1, 15))
-			break;
-		if (interface && strcmp(ip->ift_name + 1, interface) == 0 &&
-		    unit == ifnet.if_unit)
+		bcopy(ifnet.if_xname, ip->ift_name + 1, IFNAMSIZ - 1);
+		if (interface &&
+		    strcmp(ip->ift_name + 1, interface) == 0)
 			interesting = ip;
-		ip->ift_name[15] = '\0';
-		cp = index(ip->ift_name, '\0');
-		sprintf(cp, "%d)", ifnet.if_unit);
+		ip->ift_name[IFNAMSIZ - 1] = '\0';
 		ip++;
 		if (ip >= iftot + MAXIF - 2)
 			break;
diff --git a/usr.bin/netstat/main.c b/usr.bin/netstat/main.c
index bb66217ca51..2798c932a94 100644
--- a/usr.bin/netstat/main.c
+++ b/usr.bin/netstat/main.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: main.c,v 1.8 1995/10/03 21:42:40 thorpej Exp $	*/
+/*	$NetBSD: main.c,v 1.9 1996/05/07 02:55:02 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1983, 1988, 1993
@@ -43,7 +43,7 @@ char copyright[] =
 #if 0
 static char sccsid[] = "from: @(#)main.c	8.4 (Berkeley) 3/1/94";
 #else
-static char *rcsid = "$NetBSD: main.c,v 1.8 1995/10/03 21:42:40 thorpej Exp $";
+static char *rcsid = "$NetBSD: main.c,v 1.9 1996/05/07 02:55:02 thorpej Exp $";
 #endif
 #endif /* not lint */
 
@@ -204,10 +204,6 @@ main(argc, argv)
 	char *nlistf = NULL, *memf = NULL;
 	char buf[_POSIX2_LINE_MAX];
 
-	if (cp = rindex(argv[0], '/'))
-		prog = cp + 1;
-	else
-		prog = argv[0];
 	af = AF_UNSPEC;
 
 	while ((ch = getopt(argc, argv, "Aadf:ghI:iM:mN:np:rstuw:")) != EOF)
@@ -233,23 +229,17 @@ main(argc, argv)
 			else {
 				(void)fprintf(stderr,
 				    "%s: %s: unknown address family\n",
-				    prog, optarg);
+				    __progname, optarg);
 				exit(1);
 			}
 			break;
 		case 'g':
 			gflag = 1;
 			break;
-		case 'I': {
-			char *cp;
-
+		case 'I':
 			iflag = 1;
-			for (cp = interface = optarg; isalpha(*cp); cp++)
-				continue;
-			unit = atoi(cp);
-			*cp = '\0';
+			interface = optarg;
 			break;
-		}
 		case 'i':
 			iflag = 1;
 			break;
@@ -269,7 +259,7 @@ main(argc, argv)
 			if ((tp = name2protox(optarg)) == NULL) {
 				(void)fprintf(stderr,
 				    "%s: %s: unknown or uninstrumented protocol\n",
-				    prog, optarg);
+				    __progname, optarg);
 				exit(1);
 			}
 			pflag = 1;
@@ -322,15 +312,17 @@ main(argc, argv)
 	if (nlistf != NULL || memf != NULL)
 		setgid(getgid());
 
-	if ((kvmd = kvm_open(nlistf, memf, NULL, O_RDONLY, prog)) == NULL) {
-		fprintf(stderr, "%s: kvm_open: %s\n", prog, buf);
+	if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
+	    buf)) == NULL) {
+		fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
 		exit(1);
 	}
 	if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
 		if (nlistf)
-			fprintf(stderr, "%s: %s: no namelist\n", prog, nlistf);
+			fprintf(stderr, "%s: %s: no namelist\n", __progname,
+			    nlistf);
 		else
-			fprintf(stderr, "%s: no namelist\n", prog);
+			fprintf(stderr, "%s: no namelist\n", __progname);
 		exit(1);
 	}
 	if (mflag) {
@@ -433,8 +425,7 @@ kread(addr, buf, size)
 {
 
 	if (kvm_read(kvmd, addr, buf, size) != size) {
-		/* XXX this duplicates kvm_read's error printout */
-		(void)fprintf(stderr, "%s: kvm_read %s\n", prog,
+		(void)fprintf(stderr, "%s: %s\n", __progname,
 		    kvm_geterr(kvmd));
 		return (-1);
 	}
@@ -506,12 +497,12 @@ static void
 usage()
 {
 	(void)fprintf(stderr,
-"usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", prog);
+"usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname);
 	(void)fprintf(stderr,
-"       %s [-ghimnrs] [-f address_family] [-M core] [-N system]\n", prog);
+"       %s [-ghimnrs] [-f address_family] [-M core] [-N system]\n", __progname);
 	(void)fprintf(stderr,
-"       %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", prog);
+"       %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", __progname);
 	(void)fprintf(stderr,
-"       %s [-M core] [-N system] [-p protocol]\n", prog);
+"       %s [-M core] [-N system] [-p protocol]\n", __progname);
 	exit(1);
 }
diff --git a/usr.bin/netstat/mbuf.c b/usr.bin/netstat/mbuf.c
index cd521471e91..0f0067031a9 100644
--- a/usr.bin/netstat/mbuf.c
+++ b/usr.bin/netstat/mbuf.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: mbuf.c,v 1.8 1995/10/03 21:42:41 thorpej Exp $	*/
+/*	$NetBSD: mbuf.c,v 1.9 1996/05/07 02:55:03 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1983, 1988, 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "from: @(#)mbuf.c	8.1 (Berkeley) 6/6/93";
 #else
-static char *rcsid = "$NetBSD: mbuf.c,v 1.8 1995/10/03 21:42:41 thorpej Exp $";
+static char *rcsid = "$NetBSD: mbuf.c,v 1.9 1996/05/07 02:55:03 thorpej Exp $";
 #endif
 #endif /* not lint */
 
@@ -84,11 +84,13 @@ mbpr(mbaddr)
 
 	if (nmbtypes != 256) {
 		fprintf(stderr,
-		    "%s: unexpected change to mbstat; check source\n", prog);
+		    "%s: unexpected change to mbstat; check source\n",
+		        __progname);
 		return;
 	}
 	if (mbaddr == 0) {
-		fprintf(stderr, "%s: mbstat: symbol not in namelist\n", prog);
+		fprintf(stderr, "%s: mbstat: symbol not in namelist\n",
+		    __progname);
 		return;
 	}
 	if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
diff --git a/usr.bin/netstat/netstat.h b/usr.bin/netstat/netstat.h
index aaaae7b225a..085203893da 100644
--- a/usr.bin/netstat/netstat.h
+++ b/usr.bin/netstat/netstat.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: netstat.h,v 1.5 1995/10/03 21:42:45 thorpej Exp $	*/
+/*	$NetBSD: netstat.h,v 1.6 1996/05/07 02:55:05 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1992, 1993
@@ -52,11 +52,10 @@ int	tflag;		/* show i/f watchdog timers */
 int	interval;	/* repeat interval for i/f stats */
 
 char	*interface;	/* desired i/f for stats, or NULL for all i/fs */
-int	unit;		/* unit number for above */
 
 int	af;		/* address family */
 
-char	*prog;		/* program name */
+extern	char *__progname; /* program name, from crt0.o */
 
 
 int	kread __P((u_long addr, char *buf, int size));
diff --git a/usr.bin/netstat/route.c b/usr.bin/netstat/route.c
index fe8555aa5d7..d7efc392f86 100644
--- a/usr.bin/netstat/route.c
+++ b/usr.bin/netstat/route.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: route.c,v 1.14 1995/10/03 21:42:47 thorpej Exp $	*/
+/*	$NetBSD: route.c,v 1.15 1996/05/07 02:55:06 thorpej Exp $	*/
 
 /*
  * Copyright (c) 1983, 1988, 1993
@@ -37,7 +37,7 @@
 #if 0
 static char sccsid[] = "from: @(#)route.c	8.3 (Berkeley) 3/9/94";
 #else
-static char *rcsid = "$NetBSD: route.c,v 1.14 1995/10/03 21:42:47 thorpej Exp $";
+static char *rcsid = "$NetBSD: route.c,v 1.15 1996/05/07 02:55:06 thorpej Exp $";
 #endif
 #endif /* not lint */
 
@@ -449,7 +449,6 @@ p_rtentry(rt)
 	register struct rtentry *rt;
 {
 	static struct ifnet ifnet, *lastif;
-	static char name[16];
 
 	p_sockaddr(kgetsa(rt_key(rt)), rt->rt_flags, WID_DST);
 	p_sockaddr(kgetsa(rt->rt_gateway), RTF_HOST, WID_GW);
@@ -462,10 +461,9 @@ p_rtentry(rt)
 	if (rt->rt_ifp) {
 		if (rt->rt_ifp != lastif) {
 			kget(rt->rt_ifp, ifnet);
-			kread((u_long)ifnet.if_name, name, 16);
 			lastif = rt->rt_ifp;
 		}
-		printf(" %.15s%d%s", name, ifnet.if_unit,
+		printf(" %.16s%s", ifnet.if_xname,
 			rt->rt_nodes[0].rn_dupedkey ? " =>" : "");
 	}
 	putchar('\n');
-- 
2.20.1