1 files changed, 97 insertions, 0 deletions
diff --git a/mit-pthreads/net/res_query.c b/mit-pthreads/net/res_query.c
new file mode 100644
index 00000000000..1727e6d1179
--- /dev/null
+++ b/mit-pthreads/net/res_query.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 1985 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *	  notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *	  notice, this list of conditions and the following disclaimer in the
+ *	  documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *	  must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *	  may be used to endorse or promote products derived from this software
+ *	  without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.	IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+			* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+			* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+			* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+			* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+			* SUCH DAMAGE.
+			*/
+
+#if defined(LIBC_SCCS) && !defined(lint)
+/*static char *sccsid = "from: @(#)res_query.c	6.22 (Berkeley) 3/19/91";*/
+static char *rcsid = "$Id$";
+#endif /* LIBC_SCCS and not lint */
+
+#include <pthread.h>
+#include <resolv.h>
+#include <netdb.h>
+#include "res_internal.h"
+
+#if PACKETSZ > 1024
+#define MAXPACKET	PACKETSZ
+#else
+#define MAXPACKET	1024
+#endif
+
+int res_query(char *name, int class, int type, unsigned char *answer,
+			  int anslen)
+{
+	struct res_data *data;
+	char buf[MAXPACKET];
+	int result;
+	HEADER *hp;
+
+	data = _res_init();
+	if (!data)
+		return -1;
+
+	/* Make the query. */
+	result = res_mkquery(QUERY, name, class, type, NULL, 0, NULL, buf,
+						 sizeof(buf));
+	if (result <= 0) {
+		data->errval = NO_RECOVERY;
+		return result;
+	}
+
+	result = res_send(buf, result, (char *) answer, anslen);
+	if (result < 0) {
+		data->errval = TRY_AGAIN;
+		return result;
+	}
+
+	hp = (HEADER *) answer;
+	if (hp->rcode == NOERROR && ntohs(hp->ancount) != 0)
+	    return result;
+
+	/* Translate the error code and return. */
+	switch(hp->rcode) {
+	  case NOERROR:
+		data->errval = NO_DATA;
+		break;
+	  case SERVFAIL:
+		data->errval = TRY_AGAIN;
+		break;
+	  case NXDOMAIN:
+		data->errval = HOST_NOT_FOUND;
+		break;
+	  default:
+		data->errval = NO_RECOVERY;
+		break;
+	}
+	return -1;
+}
+