net_addrcmp(); needs man page

1 files changed, 37 insertions, 0 deletions

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;
+        }
+}