net_addrcmp(); needs man page

2 files changed, 41 insertions, 2 deletions

diff --git a/src/lib/libc/net/Makefile.inc b/src/lib/libc/net/Makefile.inc
index b4b94ad763..3727045c1d 100644
--- a/src/lib/libc/net/Makefile.inc
+++ b/src/lib/libc/net/Makefile.inc
@@ -1,4 +1,4 @@
-#       $OpenBSD: Makefile.inc,v 1.18 1999/06/23 21:55:28 cmetz Exp $
+#       $OpenBSD: Makefile.inc,v 1.19 1999/06/23 22:17:32 deraadt Exp $
 
 # net sources
 .PATH: ${LIBCSRCDIR}/arch/${MACHINE_ARCH}/net ${LIBCSRCDIR}/net
@@ -13,7 +13,9 @@ SRCS+=	__siocgifconf.c base64.c freeaddrinfo.c gai_strerror.c getaddrinfo.c \
         inet_lnaof.c inet_makeaddr.c inet_neta.c inet_netof.c inet_network.c \
         inet_net_ntop.c inet_net_pton.c inet_ntoa.c inet_ntop.c inet_pton.c \
         ipx_addr.c ipx_ntoa.c iso_addr.c linkaddr.c ns_addr.c ns_ntoa.c \
-        nsap_addr.c rcmd.c recv.c res_comp.c res_data.c res_debug.c \
+        nsap_addr.c \
+        net_addrcmp.c \
+        rcmd.c recv.c res_comp.c res_data.c res_debug.c \
         res_init.c res_mkquery.c res_query.c res_random.c res_send.c send.c \
         sethostent.c ethers.c rcmdsh.c
 
diff --git a/src/lib/libc/net/net_addrcmp.c b/src/lib/libc/net/net_addrcmp.c
new file mode 100644
index 0000000000..003b2567e9
--- /dev/null
+++ b/src/lib/libc/net/net_addrcmp.c
@@ -0,0 +1,37 @@
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/in.h>
+#include <netns/ns.h>
+#include <string.h>
+
+int
+net_addrcmp(sa1, sa2)
+        struct sockaddr *sa1;
+        struct sockaddr *sa2;
+{
+        if (sa1->sa_len != sa2->sa_len)
+                return (sa1->sa_len < sa2->sa_len) ? -1 : 1;
+        if (sa1->sa_family != sa2->sa_family)
+                return (sa1->sa_family < sa2->sa_family) ? -1 : 1;
+
+        switch(sa1->sa_family) {
+        case AF_INET:
+                return (memcmp(&((struct sockaddr_in *)sa1)->sin_addr,
+                    &((struct sockaddr_in *)sa2)->sin_addr,
+                    sizeof(struct in_addr)));
+        case AF_INET6:
+                return (memcmp(&((struct sockaddr_in6 *)sa1)->sin6_addr,
+                    &((struct sockaddr_in6 *)sa2)->sin6_addr,
+                    sizeof(struct in6_addr)));
+        case AF_NS:
+                return (memcmp(&((struct sockaddr_ns *)sa1)->sns_addr,
+                    &((struct sockaddr_ns *)sa2)->sns_addr,
+                    sizeof(struct ns_addr)));
+        case AF_UNIX:
+                return (strcmp(((struct sockaddr_un *)sa1)->sun_path,
+                    ((struct sockaddr_un *)sa1)->sun_path));
+        default:
+                return -1;
+        }
+}