[src/trunk]: src/sbin/ifconfig Modernise the output for the address to addres...

[roy <roy%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7c4b59a0ecf8
branches:  trunk
changeset: 818174:7c4b59a0ecf8
user:      roy <roy%NetBSD.org@localhost>
date:      Sat Oct 01 15:10:58 2016 +0000

description:
Modernise the output for the address to address/prefix instead
of differring outputs for INET and INET6.
The hex string of the INET netmask was particulary hard to read.

diffstat:

 sbin/ifconfig/af_inet.c  |  24 ++++++++++++++++++------
 sbin/ifconfig/af_inet6.c |  11 +++++------
 2 files changed, 23 insertions(+), 12 deletions(-)

diffs (108 lines):

diff -r 77d006734003 -r 7c4b59a0ecf8 sbin/ifconfig/af_inet.c
--- a/sbin/ifconfig/af_inet.c   Sat Oct 01 13:57:44 2016 +0000
+++ b/sbin/ifconfig/af_inet.c   Sat Oct 01 15:10:58 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: af_inet.c,v 1.22 2016/09/30 16:52:17 roy Exp $ */
+/*     $NetBSD: af_inet.c,v 1.23 2016/10/01 15:10:58 roy Exp $ */
 
 /*
  * Copyright (c) 1983, 1993
@@ -31,7 +31,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: af_inet.c,v 1.22 2016/09/30 16:52:17 roy Exp $");
+__RCSID("$NetBSD: af_inet.c,v 1.23 2016/10/01 15:10:58 roy Exp $");
 #endif /* not lint */
 
 #include <sys/param.h> 
@@ -64,6 +64,7 @@
 static void in_commit_address(prop_dictionary_t, prop_dictionary_t);
 static bool in_addr_tentative(struct ifaddrs *);
 static bool in_addr_tentative_or_detached(struct ifaddrs *);
+static int  in_prefixlen(struct sockaddr *);
 static void in_alias(struct ifaddrs *, prop_dictionary_t, prop_dictionary_t);
 
 static struct afswtch af = {
@@ -73,10 +74,23 @@
        .af_addr_tentative_or_detached = in_addr_tentative_or_detached
 };
 
+static int
+in_prefixlen(struct sockaddr *sa)
+{
+       struct sockaddr_in sin;
+       in_addr_t mask;
+       int cidr;
+
+       memset(&sin, 0, sizeof(sin));
+       memcpy(&sin, sa, sa->sa_len);
+       mask = ntohl(sin.sin_addr.s_addr);
+       cidr = 33 - ffs(mask);
+       return cidr;
+}
+
 static void
 in_alias(struct ifaddrs *ifa, prop_dictionary_t env, prop_dictionary_t oenv)
 {
-       struct sockaddr_in sin;
        char hbuf[NI_MAXHOST];
        const int niflag = Nflag ? 0 : NI_NUMERICHOST;
        char fbuf[1024];
@@ -88,6 +102,7 @@
                        hbuf, sizeof(hbuf), NULL, 0, niflag))
                strlcpy(hbuf, "", sizeof(hbuf));        /* some message? */
        printf("\tinet %s", hbuf);
+       printf("/%d", in_prefixlen(ifa->ifa_netmask));
 
        if (ifa->ifa_flags & IFF_POINTOPOINT) {
                if (getnameinfo(ifa->ifa_dstaddr, ifa->ifa_dstaddr->sa_len,
@@ -96,9 +111,6 @@
                printf(" -> %s", hbuf);
        }
 
-       memcpy(&sin, ifa->ifa_netmask, ifa->ifa_netmask->sa_len);
-       printf(" netmask 0x%x", ntohl(sin.sin_addr.s_addr));
-
        if (ifa->ifa_flags & IFF_BROADCAST) {
                if (getnameinfo(ifa->ifa_broadaddr, ifa->ifa_broadaddr->sa_len,
                                hbuf, sizeof(hbuf), NULL, 0, niflag))
diff -r 77d006734003 -r 7c4b59a0ecf8 sbin/ifconfig/af_inet6.c
--- a/sbin/ifconfig/af_inet6.c  Sat Oct 01 13:57:44 2016 +0000
+++ b/sbin/ifconfig/af_inet6.c  Sat Oct 01 15:10:58 2016 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: af_inet6.c,v 1.37 2016/09/30 16:47:56 roy Exp $        */
+/*     $NetBSD: af_inet6.c,v 1.38 2016/10/01 15:10:58 roy Exp $        */
 
 /*
  * Copyright (c) 1983, 1993
@@ -31,7 +31,7 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__RCSID("$NetBSD: af_inet6.c,v 1.37 2016/09/30 16:47:56 roy Exp $");
+__RCSID("$NetBSD: af_inet6.c,v 1.38 2016/10/01 15:10:58 roy Exp $");
 #endif /* not lint */
 
 #include <sys/param.h> 
@@ -277,6 +277,9 @@
        printf("\tinet6 %s", hbuf);
        inet6_putscopeid(sin6, INET6_IS_ADDR_LINKLOCAL);
 
+       sin6 = (struct sockaddr_in6 *)ifa->ifa_netmask;
+       printf("/%d", prefix(&sin6->sin6_addr, sizeof(struct in6_addr)));
+
        if (ifa->ifa_flags & IFF_POINTOPOINT) {
                sin6 = (struct sockaddr_in6 *)ifa->ifa_dstaddr;
                inet6_getscopeid(sin6, INET6_IS_ADDR_LINKLOCAL);
@@ -287,10 +290,6 @@
                printf(" -> %s", hbuf);
        }
 
-       sin6 = (struct sockaddr_in6 *)ifa->ifa_netmask;
-       printf(" prefixlen %d", prefix(&sin6->sin6_addr,
-           sizeof(struct in6_addr)));
-
        (void)snprintb(fbuf, sizeof(fbuf), IN6_IFFBITS, ifa->ifa_addrflags);
        printf(" flags %s", fbuf);