Added some protocol independent interfaces (supposedly IPv6 support APIs, but

ones that are useful for all protocols, not just IPv6).

1 files changed, 116 insertions, 0 deletions

diff --git a/src/lib/libc/net/gai_strerror.c b/src/lib/libc/net/gai_strerror.c
new file mode 100644
index 0000000000..a758b7449b
--- /dev/null
+++ b/src/lib/libc/net/gai_strerror.c
@@ -0,0 +1,116 @@
+/*
+ * %%% copyright-cmetz-97-bsd
+ * Copyright (c) 1997-1999, Craig Metz, 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 Craig Metz and
+ *      by other contributors.
+ * 4. Neither the name of the author nor the names of 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.
+ *
+ * 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 Craig Metz and
+ *      by other contributors.
+ * 4. Neither the name of the author nor the names of 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.
+ */
+
+/* gai_strerror() v1.38 */
+
+#include <sys/types.h>
+#include <netdb.h>
+#include <errno.h>
+
+#define THREAD_SAFE 0
+
+#if !THREAD_SAFE
+static char buffer[256];
+#endif /* !THREAD_SAFE */
+
+char *gai_strerror(int errnum)
+{
+  switch(errnum) {
+    case 0:
+      return "no error";
+    case EAI_BADFLAGS:
+      return "invalid value for ai_flags";
+    case EAI_NONAME:
+      return "name or service is not known";
+    case EAI_AGAIN:
+      return "temporary failure in name resolution";
+    case EAI_FAIL:
+      return "non-recoverable failure in name resolution";
+    case EAI_NODATA:
+      return "no address associated with name";
+    case EAI_FAMILY:
+      return "ai_family not supported";
+    case EAI_SOCKTYPE:
+      return "ai_socktype not supported";
+    case EAI_SERVICE:
+      return "service not supported for ai_socktype";
+    case EAI_ADDRFAMILY:
+      return "address family for name not supported";
+    case EAI_MEMORY:
+      return "memory allocation failure";
+    case EAI_SYSTEM:
+#if THREAD_SAFE
+      return "system error";
+#else /* THREAD_SAFE */
+      snprintf(buffer, sizeof(buffer)-1, "system error: %s(%d)", strerror(errno), errno);
+      buffer[sizeof(buffer)-1] = 0;
+      return buffer;
+#endif /* THREAD_SAFE */
+    default:
+#if THREAD_SAFE
+      return "unknown/invalid error";
+#else /* THREAD_SAFE */
+      snprintf(buffer, sizeof(buffer)-1, "unknown/invalid error %d", errnum);
+      buffer[sizeof(buffer)-1] = 0;
+      return buffer;
+#endif /* THREAD_SAFE */
+  };
+};