[src/trunk]: src/lib/libc/net add and document AF_LOCAL (and the rest that we...

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

details:   https://anonhg.NetBSD.org/src/rev/f3e91ff20143
branches:  trunk
changeset: 781731:f3e91ff20143
user:      christos <christos%NetBSD.org@localhost>
date:      Wed Sep 26 23:13:00 2012 +0000

description:
add and document AF_LOCAL (and the rest that were not)

diffstat:

 lib/libc/net/getnameinfo.3 |  18 +++++++++++++-----
 lib/libc/net/getnameinfo.c |  33 +++++++++++++++++++++++++++++++--
 2 files changed, 44 insertions(+), 7 deletions(-)

diffs (114 lines):

diff -r e94f2677f899 -r f3e91ff20143 lib/libc/net/getnameinfo.3
--- a/lib/libc/net/getnameinfo.3        Wed Sep 26 23:01:04 2012 +0000
+++ b/lib/libc/net/getnameinfo.3        Wed Sep 26 23:13:00 2012 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: getnameinfo.3,v 1.38 2012/03/04 03:23:35 christos Exp $
+.\"    $NetBSD: getnameinfo.3,v 1.39 2012/09/26 23:13:00 christos Exp $
 .\"    $KAME: getnameinfo.3,v 1.37 2005/01/05 03:23:05 itojun Exp $
 .\"    $OpenBSD: getnameinfo.3,v 1.36 2004/12/21 09:48:20 jmc Exp $
 .\"
@@ -17,7 +17,7 @@
 .\" OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 .\" PERFORMANCE OF THIS SOFTWARE.
 .\"
-.Dd March 3, 2012
+.Dd September 26, 2012
 .Dt GETNAMEINFO 3
 .Os
 .Sh NAME
@@ -47,11 +47,19 @@
 .Li sockaddr
 structure
 .Fa sa
-should point to either a
+should point to a
 .Li sockaddr_in
+(for IPv4),
+.Li sockaddr_in6
+(for IPv6),
+.Li sockaddr_atalk
+(for AppleTalk),
+.Li sockaddr_link
+(for link layer),
 or
-.Li sockaddr_in6
-structure (for IPv4 or IPv6 respectively) that is
+.Li sockaddr_local
+(for local/unix)
+structures that are
 .Fa salen
 bytes long.
 .Pp
diff -r e94f2677f899 -r f3e91ff20143 lib/libc/net/getnameinfo.c
--- a/lib/libc/net/getnameinfo.c        Wed Sep 26 23:01:04 2012 +0000
+++ b/lib/libc/net/getnameinfo.c        Wed Sep 26 23:13:00 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: getnameinfo.c,v 1.52 2012/03/20 17:44:18 matt Exp $    */
+/*     $NetBSD: getnameinfo.c,v 1.53 2012/09/26 23:13:00 christos Exp $        */
 /*     $KAME: getnameinfo.c,v 1.45 2000/09/25 22:43:56 itojun Exp $    */
 
 /*
@@ -47,12 +47,13 @@
 
 #include <sys/cdefs.h>
 #if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: getnameinfo.c,v 1.52 2012/03/20 17:44:18 matt Exp $");
+__RCSID("$NetBSD: getnameinfo.c,v 1.53 2012/09/26 23:13:00 christos Exp $");
 #endif /* LIBC_SCCS and not lint */
 
 #include "namespace.h"
 #include <sys/types.h>
 #include <sys/socket.h>
+#include <sys/un.h>
 #include <net/if.h>
 #include <net/if_dl.h>
 #include <net/if_ieee1394.h>
@@ -104,6 +105,8 @@
 #endif
 static int getnameinfo_atalk(const struct sockaddr *, socklen_t, char *,
     socklen_t, char *, socklen_t, int);
+static int getnameinfo_local(const struct sockaddr *, socklen_t, char *,
+    socklen_t, char *, socklen_t, int);
 
 static int getnameinfo_link(const struct sockaddr *, socklen_t, char *,
     socklen_t, char *, socklen_t, int);
@@ -131,6 +134,9 @@
        case AF_LINK:
                return getnameinfo_link(sa, salen, host, hostlen,
                    serv, servlen, flags);
+       case AF_LOCAL:
+               return getnameinfo_local(sa, salen, host, hostlen,
+                   serv, servlen, flags);
        default:
                return EAI_FAMILY;
        }
@@ -197,6 +203,29 @@
 }
 
 /*
+ * getnameinfo_local():
+ * Format an local address into a printable format.
+ */
+/* ARGSUSED */
+static int
+getnameinfo_local(const struct sockaddr *sa, socklen_t salen,
+    char *host, socklen_t hostlen, char *serv, socklen_t servlen,
+    int flags)
+{
+       const struct sockaddr_un *sun =
+           (const struct sockaddr_un *)(const void *)sa;
+
+       if (serv != NULL && servlen > 0)
+               serv[0] = '\0';
+
+       if (host && hostlen > 0)
+               strlcpy(host, sun->sun_path,
+                   MIN(sizeof(sun->sun_path) + 1, hostlen));
+
+       return 0;
+}
+
+/*
  * getnameinfo_inet():
  * Format an IPv4 or IPv6 sockaddr into a printable string.
  */