1 files changed, 105 insertions, 0 deletions
diff --git a/usr/src/lib/libresolv2_joy/common/irs/gai_strerror.c b/usr/src/lib/libresolv2_joy/common/irs/gai_strerror.c
new file mode 100644
index 0000000000..9ca1c4bfe1
--- /dev/null
+++ b/usr/src/lib/libresolv2_joy/common/irs/gai_strerror.c
@@ -0,0 +1,105 @@
+/*
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 2001 by Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <port_before.h>
+#include <netdb.h>
+#include <port_after.h>
+
+#ifdef DO_PTHREADS
+#include <pthread.h>
+#include <stdlib.h>
+#endif
+
+static const char *gai_errlist[] = {
+	"no error",
+	"address family not supported for name",/*%< EAI_ADDRFAMILY */
+	"temporary failure",			/*%< EAI_AGAIN */
+	"invalid flags",			/*%< EAI_BADFLAGS */
+	"permanent failure",			/*%< EAI_FAIL */
+	"address family not supported",		/*%< EAI_FAMILY */
+	"memory failure",			/*%< EAI_MEMORY */
+	"no address",				/*%< EAI_NODATA */
+	"unknown name or service",		/*%< EAI_NONAME */
+	"service not supported for socktype",	/*%< EAI_SERVICE */
+	"socktype not supported",		/*%< EAI_SOCKTYPE */
+	"system failure",			/*%< EAI_SYSTEM */
+	"bad hints",				/*%< EAI_BADHINTS */
+	"bad protocol",				/*%< EAI_PROTOCOL */
+	"unknown error"				/*%< Must be last. */
+};
+
+static const int gai_nerr = (sizeof(gai_errlist)/sizeof(*gai_errlist));
+
+#define EAI_BUFSIZE 128
+
+const char *
+gai_strerror(int ecode) {
+#ifndef DO_PTHREADS
+	static char buf[EAI_BUFSIZE];
+#else	/* DO_PTHREADS */
+#ifndef LIBBIND_MUTEX_INITIALIZER
+#define LIBBIND_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
+#endif
+	static pthread_mutex_t lock = LIBBIND_MUTEX_INITIALIZER;
+	static pthread_key_t key;
+	static int once = 0;
+	char *buf;
+#endif
+
+	if (ecode >= 0 && ecode < (gai_nerr - 1))
+		return (gai_errlist[ecode]);
+
+#ifdef DO_PTHREADS
+        if (!once) {
+                if (pthread_mutex_lock(&lock) != 0)
+			goto unknown;
+                if (!once) {
+                        if (pthread_key_create(&key, free) != 0) {
+				(void)pthread_mutex_unlock(&lock);
+				goto unknown;
+			}
+			once = 1;
+		}
+                if (pthread_mutex_unlock(&lock) != 0)
+			goto unknown;
+        }
+
+	buf = pthread_getspecific(key);
+        if (buf == NULL) {
+		buf = malloc(EAI_BUFSIZE);
+                if (buf == NULL)
+                        goto unknown;
+                if (pthread_setspecific(key, buf) != 0) {
+			free(buf);
+			goto unknown;
+		}
+        }
+#endif
+	/* 
+	 * XXX This really should be snprintf(buf, EAI_BUFSIZE, ...).
+	 * It is safe until message catalogs are used.
+	 */
+	sprintf(buf, "%s: %d", gai_errlist[gai_nerr - 1], ecode);
+	return (buf);
+
+#ifdef DO_PTHREADS
+ unknown:
+	return ("unknown error");
+#endif
+}
+
+/*! \file */