[src/trunk]: src/lib/libc/net set h_errno properly if internal string manipul...

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

details:   https://anonhg.NetBSD.org/src/rev/4320df43f20f
branches:  trunk
changeset: 535382:4320df43f20f
user:      itojun <itojun%NetBSD.org@localhost>
date:      Fri Aug 16 21:54:00 2002 +0000

description:
set h_errno properly if internal string manipulation fails.

diffstat:

 lib/libc/net/gethnamaddr.c |  16 +++++++++++-----
 1 files changed, 11 insertions(+), 5 deletions(-)

diffs (48 lines):

diff -r bc44e37846f0 -r 4320df43f20f lib/libc/net/gethnamaddr.c
--- a/lib/libc/net/gethnamaddr.c        Fri Aug 16 21:43:14 2002 +0000
+++ b/lib/libc/net/gethnamaddr.c        Fri Aug 16 21:54:00 2002 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: gethnamaddr.c,v 1.49 2002/08/16 11:30:28 itojun Exp $  */
+/*     $NetBSD: gethnamaddr.c,v 1.50 2002/08/16 21:54:00 itojun Exp $  */
 
 /*
  * ++Copyright++ 1985, 1988, 1993
@@ -61,7 +61,7 @@
 static char sccsid[] = "@(#)gethostnamadr.c    8.1 (Berkeley) 6/4/93";
 static char rcsid[] = "Id: gethnamaddr.c,v 8.21 1997/06/01 20:34:37 vixie Exp ";
 #else
-__RCSID("$NetBSD: gethnamaddr.c,v 1.49 2002/08/16 11:30:28 itojun Exp $");
+__RCSID("$NetBSD: gethnamaddr.c,v 1.50 2002/08/16 21:54:00 itojun Exp $");
 #endif
 #endif /* LIBC_SCCS and not lint */
 
@@ -1193,11 +1193,15 @@
                            ((unsigned int)uaddr[n] >> 4) & 0xf);
                        if (advance > 0 && qp + advance < ep)
                                qp += advance;
-                       else
+                       else {
+                               h_errno = NETDB_INTERNAL;
                                return NS_NOTFOUND;
+                       }
                }
-               if (strlcat(qbuf, "ip6.arpa", sizeof(qbuf)) >= sizeof(qbuf))
+               if (strlcat(qbuf, "ip6.arpa", sizeof(qbuf)) >= sizeof(qbuf)) {
+                       h_errno = NETDB_INTERNAL;
                        return NS_NOTFOUND;
+               }
                break;
        default:
                abort();
@@ -1206,8 +1210,10 @@
        n = res_query(qbuf, C_IN, T_PTR, (u_char *)(void *)&buf, sizeof(buf));
        if (n < 0 && af == AF_INET6) {
                *qp = '\0';
-               if (strlcat(qbuf, "ip6.int", sizeof(qbuf)) >= sizeof(qbuf))
+               if (strlcat(qbuf, "ip6.int", sizeof(qbuf)) >= sizeof(qbuf)) {
+                       h_errno = NETDB_INTERNAL;
                        return NS_NOTFOUND;
+               }
                n = res_query(qbuf, C_IN, T_PTR, (u_char *)(void *)&buf,
                    sizeof(buf));
        }