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/*
* %%% 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 */
};
};
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